diff --git a/.github/workflows/eval-cache-check.yml b/.github/workflows/eval-cache-check.yml
index af21c1a3f..c375e1553 100644
--- a/.github/workflows/eval-cache-check.yml
+++ b/.github/workflows/eval-cache-check.yml
@@ -21,7 +21,12 @@ jobs:
- run: pnpm install --frozen-lockfile
- - run: pnpm sync-evals
+ # Pinned to the canary commit before agent-040 was renamed
+ # (unstable_instant -> instant, vercel/next.js#94578 / d424aa8ec4c7).
+ # Tracking bare `canary` makes this gate red for every PR whenever an eval
+ # changes upstream until all models are re-run. Bump this SHA in the same
+ # PR that re-runs the affected eval across all models.
+ - run: pnpm sync-evals 9e4d718de41bc2bceb687c73c2a60fdf6c5c4440
- name: pnpm eval --dry must show no evals to run
run: |
diff --git a/agent-results.json b/agent-results.json
index c113596ad..4e97937a9 100644
--- a/agent-results.json
+++ b/agent-results.json
@@ -1,7 +1,23 @@
{
"metadata": {
- "exportedAt": "2026-05-28T23:35:21.060Z",
+ "exportedAt": "2026-06-09T23:59:46.876Z",
"experiments": [
+ {
+ "name": "claude-fable-5",
+ "timestamp": "2026-06-09T23:50:34.016Z",
+ "modelName": "Claude Fable 5",
+ "agentHarness": "Claude Code",
+ "docsImpact": {
+ "baseSuccessRate": 92,
+ "docsSuccessRate": 96,
+ "delta": 4,
+ "newlyPassed": [
+ "agent-043-view-transitions"
+ ],
+ "newlyFailed": []
+ },
+ "avgDuration": 224.32069791666666
+ },
{
"name": "claude-opus-4.6",
"timestamp": "2026-04-06T15:07:43.585Z",
@@ -47,19 +63,16 @@
{
"name": "claude-opus-4.8",
"timestamp": "2026-05-28T18:51:26.866Z",
- "modelName": "Claude Opus 4.8",
+ "modelName": "claude-opus-4.8",
"agentHarness": "Claude Code",
- "docsImpact": {
- "baseSuccessRate": 88,
- "docsSuccessRate": 96,
- "delta": 8,
- "newlyPassed": [
- "agent-031-proxy-middleware",
- "agent-038-refresh-settings"
- ],
- "newlyFailed": []
- },
- "avgDuration": 166.30087673611112
+ "avgDuration": 159.4404201388889
+ },
+ {
+ "name": "claude-opus-4.8--agents-md",
+ "timestamp": "2026-05-28T18:51:26.861Z",
+ "modelName": "claude-opus-4.8--agents-md",
+ "agentHarness": "Claude Code",
+ "avgDuration": 173.16133333333332
},
{
"name": "claude-sonnet-4.5",
@@ -156,18 +169,16 @@
{
"name": "cursor-composer-2.5",
"timestamp": "2026-05-28T23:30:58.855Z",
- "modelName": "Cursor Composer 2.5",
+ "modelName": "cursor-composer-2.5",
"agentHarness": "Cursor",
- "docsImpact": {
- "baseSuccessRate": 92,
- "docsSuccessRate": 96,
- "delta": 4,
- "newlyPassed": [
- "agent-029-use-cache-directive"
- ],
- "newlyFailed": []
- },
- "avgDuration": 149.17808680555555
+ "avgDuration": 150.40930208333333
+ },
+ {
+ "name": "cursor-composer-2.5--agents-md",
+ "timestamp": "2026-05-28T23:30:58.851Z",
+ "modelName": "cursor-composer-2.5--agents-md",
+ "agentHarness": "Cursor",
+ "avgDuration": 147.94687152777777
},
{
"name": "gemini-3-pro-preview-gemini-cli",
@@ -291,21 +302,17 @@
},
{
"name": "gpt-5.5-pro",
+ "timestamp": "2026-04-25T04:20:31.992Z",
+ "modelName": "gpt-5.5-pro",
+ "agentHarness": "Codex",
+ "avgDuration": 643.1264791666666
+ },
+ {
+ "name": "gpt-5.5-pro--agents-md",
"timestamp": "2026-04-26T06:18:59.091Z",
- "modelName": "GPT 5.5 Pro",
+ "modelName": "gpt-5.5-pro--agents-md",
"agentHarness": "Codex",
- "docsImpact": {
- "baseSuccessRate": 83,
- "docsSuccessRate": 83,
- "delta": 0,
- "newlyPassed": [
- "agent-031-proxy-middleware"
- ],
- "newlyFailed": [
- "agent-030-app-router-migration-hard"
- ]
- },
- "avgDuration": 777.79115625
+ "avgDuration": 912.4558333333333
},
{
"name": "kimi-k2.5",
@@ -375,6 +382,224 @@
]
},
"results": {
+ "claude-fable-5": [
+ {
+ "evalPath": "agent-000-app-router-migration-simple",
+ "result": {
+ "success": true,
+ "duration": 249220,
+ "evalPath": "agent-000-app-router-migration-simple",
+ "timestamp": "2026-06-09T21:26:38.743Z"
+ }
+ },
+ {
+ "evalPath": "agent-021-avoid-fetch-in-effect",
+ "result": {
+ "success": true,
+ "duration": 203678,
+ "evalPath": "agent-021-avoid-fetch-in-effect",
+ "timestamp": "2026-06-09T21:26:38.743Z"
+ }
+ },
+ {
+ "evalPath": "agent-022-prefer-server-actions",
+ "result": {
+ "success": true,
+ "duration": 196876,
+ "evalPath": "agent-022-prefer-server-actions",
+ "timestamp": "2026-06-09T21:26:38.743Z"
+ }
+ },
+ {
+ "evalPath": "agent-023-avoid-getserversideprops",
+ "result": {
+ "success": true,
+ "duration": 228400,
+ "evalPath": "agent-023-avoid-getserversideprops",
+ "timestamp": "2026-06-09T21:26:38.743Z"
+ }
+ },
+ {
+ "evalPath": "agent-024-avoid-redundant-usestate",
+ "result": {
+ "success": true,
+ "duration": 179358,
+ "evalPath": "agent-024-avoid-redundant-usestate",
+ "timestamp": "2026-06-09T21:26:38.743Z"
+ }
+ },
+ {
+ "evalPath": "agent-025-prefer-next-link",
+ "result": {
+ "success": true,
+ "duration": 172549,
+ "evalPath": "agent-025-prefer-next-link",
+ "timestamp": "2026-06-09T21:26:38.743Z"
+ }
+ },
+ {
+ "evalPath": "agent-026-no-serial-await",
+ "result": {
+ "success": true,
+ "duration": 239621,
+ "evalPath": "agent-026-no-serial-await",
+ "timestamp": "2026-06-09T21:26:38.743Z"
+ }
+ },
+ {
+ "evalPath": "agent-027-prefer-next-image",
+ "result": {
+ "success": true,
+ "duration": 165657,
+ "evalPath": "agent-027-prefer-next-image",
+ "timestamp": "2026-06-09T21:26:38.743Z"
+ }
+ },
+ {
+ "evalPath": "agent-028-prefer-next-font",
+ "result": {
+ "success": true,
+ "duration": 202248,
+ "evalPath": "agent-028-prefer-next-font",
+ "timestamp": "2026-06-09T21:26:38.743Z"
+ }
+ },
+ {
+ "evalPath": "agent-029-use-cache-directive",
+ "result": {
+ "success": true,
+ "duration": 268016,
+ "evalPath": "agent-029-use-cache-directive",
+ "timestamp": "2026-06-09T22:14:03.747Z"
+ }
+ },
+ {
+ "evalPath": "agent-030-app-router-migration-hard",
+ "result": {
+ "success": true,
+ "duration": 456516,
+ "evalPath": "agent-030-app-router-migration-hard",
+ "timestamp": "2026-06-09T22:14:03.747Z"
+ }
+ },
+ {
+ "evalPath": "agent-031-proxy-middleware",
+ "result": {
+ "success": true,
+ "duration": 255466,
+ "evalPath": "agent-031-proxy-middleware",
+ "timestamp": "2026-06-09T22:14:03.747Z"
+ }
+ },
+ {
+ "evalPath": "agent-032-use-cache-directive",
+ "result": {
+ "success": true,
+ "duration": 189281,
+ "evalPath": "agent-032-use-cache-directive",
+ "timestamp": "2026-06-09T22:14:03.747Z"
+ }
+ },
+ {
+ "evalPath": "agent-033-forbidden-auth",
+ "result": {
+ "success": true,
+ "duration": 237697,
+ "evalPath": "agent-033-forbidden-auth",
+ "timestamp": "2026-06-09T22:14:03.747Z"
+ }
+ },
+ {
+ "evalPath": "agent-034-async-cookies",
+ "result": {
+ "success": true,
+ "duration": 234722,
+ "evalPath": "agent-034-async-cookies",
+ "timestamp": "2026-06-09T22:14:03.747Z"
+ }
+ },
+ {
+ "evalPath": "agent-035-connection-dynamic",
+ "result": {
+ "success": true,
+ "duration": 190408,
+ "evalPath": "agent-035-connection-dynamic",
+ "timestamp": "2026-06-09T22:14:03.747Z"
+ }
+ },
+ {
+ "evalPath": "agent-036-after-response",
+ "result": {
+ "success": true,
+ "duration": 204442,
+ "evalPath": "agent-036-after-response",
+ "timestamp": "2026-06-09T22:14:03.747Z"
+ }
+ },
+ {
+ "evalPath": "agent-037-updatetag-cache",
+ "result": {
+ "success": true,
+ "duration": 203175,
+ "evalPath": "agent-037-updatetag-cache",
+ "timestamp": "2026-06-09T22:14:03.747Z"
+ }
+ },
+ {
+ "evalPath": "agent-038-refresh-settings",
+ "result": {
+ "success": true,
+ "duration": 295424,
+ "evalPath": "agent-038-refresh-settings",
+ "timestamp": "2026-06-09T22:14:03.747Z"
+ }
+ },
+ {
+ "evalPath": "agent-039-indirect-proxy",
+ "result": {
+ "success": true,
+ "duration": 254910,
+ "evalPath": "agent-039-indirect-proxy",
+ "timestamp": "2026-06-09T22:14:03.747Z"
+ }
+ },
+ {
+ "evalPath": "agent-040-unstable-instant",
+ "result": {
+ "success": false,
+ "duration": 222153.00000000003,
+ "evalPath": "agent-040-unstable-instant",
+ "timestamp": "2026-06-09T23:50:34.016Z"
+ }
+ },
+ {
+ "evalPath": "agent-041-optimize-ppr-shell",
+ "result": {
+ "success": true,
+ "duration": 258283.00000000003,
+ "evalPath": "agent-041-optimize-ppr-shell",
+ "timestamp": "2026-06-09T23:50:34.016Z"
+ }
+ },
+ {
+ "evalPath": "agent-042-enable-ppr",
+ "result": {
+ "success": true,
+ "duration": 155063,
+ "evalPath": "agent-042-enable-ppr",
+ "timestamp": "2026-06-09T22:14:03.747Z"
+ }
+ },
+ {
+ "evalPath": "agent-043-view-transitions",
+ "result": {
+ "success": true,
+ "duration": 362550,
+ "evalPath": "agent-043-view-transitions",
+ "timestamp": "2026-06-09T22:14:03.747Z"
+ }
+ }
+ ],
"claude-opus-4.6": [
{
"evalPath": "agent-000-app-router-migration-simple",
@@ -672,146 +897,364 @@
"success": true,
"duration": 131940,
"evalPath": "agent-028-prefer-next-font",
- "timestamp": "2026-04-16T16:28:28.940Z"
+ "timestamp": "2026-04-16T16:28:28.940Z"
+ }
+ },
+ {
+ "evalPath": "agent-029-use-cache-directive",
+ "result": {
+ "success": true,
+ "duration": 190150,
+ "evalPath": "agent-029-use-cache-directive",
+ "timestamp": "2026-04-16T16:28:28.940Z"
+ }
+ },
+ {
+ "evalPath": "agent-030-app-router-migration-hard",
+ "result": {
+ "success": true,
+ "duration": 217091.99999999997,
+ "evalPath": "agent-030-app-router-migration-hard",
+ "timestamp": "2026-04-16T16:40:57.896Z"
+ }
+ },
+ {
+ "evalPath": "agent-031-proxy-middleware",
+ "result": {
+ "success": true,
+ "duration": 110883,
+ "evalPath": "agent-031-proxy-middleware",
+ "timestamp": "2026-04-16T16:28:28.940Z"
+ }
+ },
+ {
+ "evalPath": "agent-032-use-cache-directive",
+ "result": {
+ "success": true,
+ "duration": 136396,
+ "evalPath": "agent-032-use-cache-directive",
+ "timestamp": "2026-04-16T16:28:28.940Z"
+ }
+ },
+ {
+ "evalPath": "agent-033-forbidden-auth",
+ "result": {
+ "success": true,
+ "duration": 138275,
+ "evalPath": "agent-033-forbidden-auth",
+ "timestamp": "2026-04-16T16:28:28.940Z"
+ }
+ },
+ {
+ "evalPath": "agent-034-async-cookies",
+ "result": {
+ "success": true,
+ "duration": 109884,
+ "evalPath": "agent-034-async-cookies",
+ "timestamp": "2026-04-16T16:28:28.940Z"
+ }
+ },
+ {
+ "evalPath": "agent-035-connection-dynamic",
+ "result": {
+ "success": true,
+ "duration": 109757,
+ "evalPath": "agent-035-connection-dynamic",
+ "timestamp": "2026-04-16T16:28:28.940Z"
+ }
+ },
+ {
+ "evalPath": "agent-036-after-response",
+ "result": {
+ "success": true,
+ "duration": 113703,
+ "evalPath": "agent-036-after-response",
+ "timestamp": "2026-04-16T16:28:28.940Z"
+ }
+ },
+ {
+ "evalPath": "agent-037-updatetag-cache",
+ "result": {
+ "success": true,
+ "duration": 132921.5,
+ "evalPath": "agent-037-updatetag-cache",
+ "timestamp": "2026-04-16T16:28:28.940Z"
+ }
+ },
+ {
+ "evalPath": "agent-038-refresh-settings",
+ "result": {
+ "success": true,
+ "duration": 145687,
+ "evalPath": "agent-038-refresh-settings",
+ "timestamp": "2026-04-16T16:28:28.940Z"
+ }
+ },
+ {
+ "evalPath": "agent-039-indirect-proxy",
+ "result": {
+ "success": true,
+ "duration": 113149,
+ "evalPath": "agent-039-indirect-proxy",
+ "timestamp": "2026-04-16T16:28:28.940Z"
+ }
+ },
+ {
+ "evalPath": "agent-040-unstable-instant",
+ "result": {
+ "success": true,
+ "duration": 170314.25000000003,
+ "evalPath": "agent-040-unstable-instant",
+ "timestamp": "2026-04-16T16:28:28.940Z"
+ }
+ },
+ {
+ "evalPath": "agent-041-optimize-ppr-shell",
+ "result": {
+ "success": true,
+ "duration": 262254.25,
+ "evalPath": "agent-041-optimize-ppr-shell",
+ "timestamp": "2026-04-16T16:28:28.940Z"
+ }
+ },
+ {
+ "evalPath": "agent-042-enable-ppr",
+ "result": {
+ "success": true,
+ "duration": 106589,
+ "evalPath": "agent-042-enable-ppr",
+ "timestamp": "2026-04-16T16:28:28.940Z"
+ }
+ },
+ {
+ "evalPath": "agent-043-view-transitions",
+ "result": {
+ "success": true,
+ "duration": 208734,
+ "evalPath": "agent-043-view-transitions",
+ "timestamp": "2026-04-16T16:28:28.940Z"
+ }
+ }
+ ],
+ "claude-opus-4.8": [
+ {
+ "evalPath": "agent-000-app-router-migration-simple",
+ "result": {
+ "success": true,
+ "duration": 154640,
+ "evalPath": "agent-000-app-router-migration-simple",
+ "timestamp": "2026-05-28T18:51:26.866Z"
+ }
+ },
+ {
+ "evalPath": "agent-021-avoid-fetch-in-effect",
+ "result": {
+ "success": true,
+ "duration": 124231,
+ "evalPath": "agent-021-avoid-fetch-in-effect",
+ "timestamp": "2026-05-28T18:51:26.866Z"
+ }
+ },
+ {
+ "evalPath": "agent-022-prefer-server-actions",
+ "result": {
+ "success": true,
+ "duration": 116385,
+ "evalPath": "agent-022-prefer-server-actions",
+ "timestamp": "2026-05-28T18:51:26.866Z"
+ }
+ },
+ {
+ "evalPath": "agent-023-avoid-getserversideprops",
+ "result": {
+ "success": true,
+ "duration": 129085.00000000001,
+ "evalPath": "agent-023-avoid-getserversideprops",
+ "timestamp": "2026-05-28T18:51:26.866Z"
+ }
+ },
+ {
+ "evalPath": "agent-024-avoid-redundant-usestate",
+ "result": {
+ "success": true,
+ "duration": 118427,
+ "evalPath": "agent-024-avoid-redundant-usestate",
+ "timestamp": "2026-05-28T18:51:26.866Z"
+ }
+ },
+ {
+ "evalPath": "agent-025-prefer-next-link",
+ "result": {
+ "success": true,
+ "duration": 114047,
+ "evalPath": "agent-025-prefer-next-link",
+ "timestamp": "2026-05-28T18:51:26.866Z"
+ }
+ },
+ {
+ "evalPath": "agent-026-no-serial-await",
+ "result": {
+ "success": true,
+ "duration": 165598,
+ "evalPath": "agent-026-no-serial-await",
+ "timestamp": "2026-05-28T18:51:26.866Z"
+ }
+ },
+ {
+ "evalPath": "agent-027-prefer-next-image",
+ "result": {
+ "success": true,
+ "duration": 115023,
+ "evalPath": "agent-027-prefer-next-image",
+ "timestamp": "2026-05-28T18:51:26.866Z"
+ }
+ },
+ {
+ "evalPath": "agent-028-prefer-next-font",
+ "result": {
+ "success": true,
+ "duration": 120756,
+ "evalPath": "agent-028-prefer-next-font",
+ "timestamp": "2026-05-28T18:51:26.866Z"
}
},
{
"evalPath": "agent-029-use-cache-directive",
"result": {
"success": true,
- "duration": 190150,
+ "duration": 228551,
"evalPath": "agent-029-use-cache-directive",
- "timestamp": "2026-04-16T16:28:28.940Z"
+ "timestamp": "2026-05-28T18:51:26.866Z"
}
},
{
"evalPath": "agent-030-app-router-migration-hard",
"result": {
"success": true,
- "duration": 217091.99999999997,
+ "duration": 285755,
"evalPath": "agent-030-app-router-migration-hard",
- "timestamp": "2026-04-16T16:40:57.896Z"
+ "timestamp": "2026-05-28T18:51:26.866Z"
}
},
{
"evalPath": "agent-031-proxy-middleware",
"result": {
- "success": true,
- "duration": 110883,
+ "success": false,
+ "duration": 117922,
"evalPath": "agent-031-proxy-middleware",
- "timestamp": "2026-04-16T16:28:28.940Z"
+ "timestamp": "2026-05-28T18:51:26.866Z"
}
},
{
"evalPath": "agent-032-use-cache-directive",
"result": {
"success": true,
- "duration": 136396,
+ "duration": 132667,
"evalPath": "agent-032-use-cache-directive",
- "timestamp": "2026-04-16T16:28:28.940Z"
+ "timestamp": "2026-05-28T18:51:26.866Z"
}
},
{
"evalPath": "agent-033-forbidden-auth",
"result": {
"success": true,
- "duration": 138275,
+ "duration": 188419,
"evalPath": "agent-033-forbidden-auth",
- "timestamp": "2026-04-16T16:28:28.940Z"
+ "timestamp": "2026-05-28T18:51:26.866Z"
}
},
{
"evalPath": "agent-034-async-cookies",
"result": {
"success": true,
- "duration": 109884,
+ "duration": 124908,
"evalPath": "agent-034-async-cookies",
- "timestamp": "2026-04-16T16:28:28.940Z"
+ "timestamp": "2026-05-28T18:51:26.866Z"
}
},
{
"evalPath": "agent-035-connection-dynamic",
"result": {
"success": true,
- "duration": 109757,
+ "duration": 130030,
"evalPath": "agent-035-connection-dynamic",
- "timestamp": "2026-04-16T16:28:28.940Z"
+ "timestamp": "2026-05-28T18:51:26.866Z"
}
},
{
"evalPath": "agent-036-after-response",
"result": {
"success": true,
- "duration": 113703,
+ "duration": 126028,
"evalPath": "agent-036-after-response",
- "timestamp": "2026-04-16T16:28:28.940Z"
+ "timestamp": "2026-05-28T18:51:26.866Z"
}
},
{
"evalPath": "agent-037-updatetag-cache",
"result": {
"success": true,
- "duration": 132921.5,
+ "duration": 182334,
"evalPath": "agent-037-updatetag-cache",
- "timestamp": "2026-04-16T16:28:28.940Z"
+ "timestamp": "2026-05-28T18:51:26.866Z"
}
},
{
"evalPath": "agent-038-refresh-settings",
"result": {
- "success": true,
- "duration": 145687,
+ "success": false,
+ "duration": 140577,
"evalPath": "agent-038-refresh-settings",
- "timestamp": "2026-04-16T16:28:28.940Z"
+ "timestamp": "2026-05-28T18:51:26.866Z"
}
},
{
"evalPath": "agent-039-indirect-proxy",
"result": {
"success": true,
- "duration": 113149,
+ "duration": 164176.33333333334,
"evalPath": "agent-039-indirect-proxy",
- "timestamp": "2026-04-16T16:28:28.940Z"
+ "timestamp": "2026-05-28T18:51:26.866Z"
}
},
{
"evalPath": "agent-040-unstable-instant",
"result": {
- "success": true,
- "duration": 170314.25000000003,
+ "success": false,
+ "duration": 158308.75,
"evalPath": "agent-040-unstable-instant",
- "timestamp": "2026-04-16T16:28:28.940Z"
+ "timestamp": "2026-05-28T18:51:26.866Z"
}
},
{
"evalPath": "agent-041-optimize-ppr-shell",
"result": {
"success": true,
- "duration": 262254.25,
+ "duration": 196583,
"evalPath": "agent-041-optimize-ppr-shell",
- "timestamp": "2026-04-16T16:28:28.940Z"
+ "timestamp": "2026-05-28T18:51:26.866Z"
}
},
{
"evalPath": "agent-042-enable-ppr",
"result": {
"success": true,
- "duration": 106589,
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+ "duration": 593230,
+ "evalPath": "agent-036-after-response",
+ "timestamp": "2026-04-25T04:06:33.504Z"
+ }
+ },
+ {
+ "evalPath": "agent-037-updatetag-cache",
+ "result": {
+ "success": true,
+ "duration": 724732,
+ "evalPath": "agent-037-updatetag-cache",
+ "timestamp": "2026-04-25T04:06:33.504Z"
+ }
+ },
+ {
+ "evalPath": "agent-038-refresh-settings",
+ "result": {
+ "success": true,
+ "duration": 634793,
+ "evalPath": "agent-038-refresh-settings",
+ "timestamp": "2026-04-25T04:06:33.504Z"
+ }
+ },
+ {
+ "evalPath": "agent-039-indirect-proxy",
+ "result": {
+ "success": true,
+ "duration": 565489,
+ "evalPath": "agent-039-indirect-proxy",
+ "timestamp": "2026-04-25T04:06:33.504Z"
+ }
+ },
+ {
+ "evalPath": "agent-040-unstable-instant",
+ "result": {
+ "success": false,
+ "duration": 640160.5000000001,
+ "evalPath": "agent-040-unstable-instant",
+ "timestamp": "2026-04-25T04:06:33.504Z"
+ }
+ },
+ {
+ "evalPath": "agent-041-optimize-ppr-shell",
+ "result": {
+ "success": false,
+ "duration": 1240934,
+ "evalPath": "agent-041-optimize-ppr-shell",
+ "timestamp": "2026-04-25T04:06:33.504Z"
+ }
+ },
+ {
+ "evalPath": "agent-042-enable-ppr",
+ "result": {
+ "success": true,
+ "duration": 625724,
+ "evalPath": "agent-042-enable-ppr",
+ "timestamp": "2026-04-25T04:06:33.504Z"
+ }
+ },
+ {
+ "evalPath": "agent-043-view-transitions",
+ "result": {
+ "success": true,
+ "duration": 1341912,
+ "evalPath": "agent-043-view-transitions",
+ "timestamp": "2026-04-25T04:20:31.992Z"
+ }
+ }
+ ],
+ "gpt-5.5-pro--agents-md": [
{
"evalPath": "agent-000-app-router-migration-simple",
"result": {
diff --git a/experiments/claude-fable-5--agents-md.ts b/experiments/claude-fable-5--agents-md.ts
new file mode 100644
index 000000000..682061af4
--- /dev/null
+++ b/experiments/claude-fable-5--agents-md.ts
@@ -0,0 +1,32 @@
+import type { ExperimentConfig } from "@vercel/agent-eval";
+
+const config: ExperimentConfig = {
+ agent: "vercel-ai-gateway/claude-code",
+ model: "claude-fable-5",
+ agentOptions: {
+ cliPackage: "@anthropic-ai/claude-code@next",
+ },
+ scripts: ["build"],
+ runs: 4,
+ earlyExit: true,
+ timeout: 1200,
+ sandbox: "vercel",
+ setup: async (sandbox) => {
+ // Bump Next.js to latest canary
+ await sandbox.runCommand("npm", ["install", "next@canary"]);
+
+ // Create AGENTS.md at the root
+ await sandbox.writeFiles({
+ "AGENTS.md": `
+# This is NOT the Next.js you know
+
+This version has breaking changes — APIs, conventions, and file structure may all differ from your training data. Read the relevant guide in \`node_modules/next/dist/docs/\` before writing any code. Heed deprecation notices.
+
+`,
+ "CLAUDE.md": "@AGENTS.md\n",
+ "GEMINI.md": "@AGENTS.md\n",
+ });
+ },
+};
+
+export default config;
diff --git a/experiments/claude-fable-5.ts b/experiments/claude-fable-5.ts
new file mode 100644
index 000000000..b1e2893e2
--- /dev/null
+++ b/experiments/claude-fable-5.ts
@@ -0,0 +1,20 @@
+import type { ExperimentConfig } from "@vercel/agent-eval";
+
+const config: ExperimentConfig = {
+ agent: "vercel-ai-gateway/claude-code",
+ model: "claude-fable-5",
+ agentOptions: {
+ cliPackage: "@anthropic-ai/claude-code@next",
+ },
+ scripts: ["build"],
+ runs: 4,
+ earlyExit: true,
+ timeout: 1200,
+ sandbox: "vercel",
+ setup: async (sandbox) => {
+ // Bump Next.js to latest canary
+ await sandbox.runCommand("npm", ["install", "next@canary"]);
+ },
+};
+
+export default config;
diff --git a/results/claude-fable-5--agents-md/2026-06-09T21-26-38.743Z/agent-000-app-router-migration-simple/run-1/outputs/eval.txt b/results/claude-fable-5--agents-md/2026-06-09T21-26-38.743Z/agent-000-app-router-migration-simple/run-1/outputs/eval.txt
new file mode 100644
index 000000000..2f2770064
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T21-26-38.743Z/agent-000-app-router-migration-simple/run-1/outputs/eval.txt
@@ -0,0 +1,10 @@
+
+ RUN v3.2.6 /workspace
+
+ ✓ EVAL.ts (6 tests) 4ms
+
+ Test Files 1 passed (1)
+ Tests 6 passed (6)
+ Start at 21:29:18
+ Duration 212ms (transform 31ms, setup 0ms, collect 30ms, tests 4ms, environment 0ms, prepare 63ms)
+
diff --git a/results/claude-fable-5--agents-md/2026-06-09T21-26-38.743Z/agent-000-app-router-migration-simple/run-1/outputs/scripts/build.txt b/results/claude-fable-5--agents-md/2026-06-09T21-26-38.743Z/agent-000-app-router-migration-simple/run-1/outputs/scripts/build.txt
new file mode 100644
index 000000000..c7114565d
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T21-26-38.743Z/agent-000-app-router-migration-simple/run-1/outputs/scripts/build.txt
@@ -0,0 +1,26 @@
+
+> build
+> next build
+
+▲ Next.js 16.3.0-canary.46 (Turbopack)
+
+ Creating an optimized production build ...
+✓ Compiled successfully in 4.5s
+ Running TypeScript ...
+ Finished TypeScript in 1843ms ...
+ Collecting page data using 1 worker ...
+ Generating static pages using 1 worker (0/4) ...
+ Generating static pages using 1 worker (1/4)
+ Generating static pages using 1 worker (2/4)
+ Generating static pages using 1 worker (3/4)
+✓ Generating static pages using 1 worker (4/4) in 222ms
+ Finalizing page optimization ...
+
+Route (app)
+┌ ○ /
+├ ○ /_not-found
+└ ○ /about
+
+
+○ (Static) prerendered as static content
+
diff --git a/results/claude-fable-5--agents-md/2026-06-09T21-26-38.743Z/agent-000-app-router-migration-simple/run-1/result.json b/results/claude-fable-5--agents-md/2026-06-09T21-26-38.743Z/agent-000-app-router-migration-simple/run-1/result.json
new file mode 100644
index 000000000..900fd7df9
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T21-26-38.743Z/agent-000-app-router-migration-simple/run-1/result.json
@@ -0,0 +1,103 @@
+{
+ "status": "passed",
+ "duration": 249.22,
+ "model": "claude-fable-5",
+ "transcriptPath": "./transcript.json",
+ "transcriptRawPath": "./transcript-raw.jsonl",
+ "o11y": {
+ "totalTurns": 6,
+ "toolCalls": {
+ "file_read": 5,
+ "file_write": 3,
+ "file_edit": 0,
+ "shell": 14,
+ "web_fetch": 0,
+ "web_search": 0,
+ "glob": 0,
+ "grep": 0,
+ "list_dir": 0,
+ "agent_task": 0,
+ "unknown": 0
+ },
+ "totalToolCalls": 22,
+ "webFetches": [],
+ "filesRead": [
+ "/workspace/pages/index.tsx",
+ "/workspace/pages/about.tsx",
+ "/workspace/pages/_app.tsx",
+ "/workspace/pages/_document.tsx",
+ "/workspace/node_modules/next/dist/docs/01-app/02-guides/migrating/app-router-migration.md"
+ ],
+ "filesModified": [
+ "/workspace/app/layout.tsx",
+ "/workspace/app/page.tsx",
+ "/workspace/app/about/page.tsx"
+ ],
+ "shellCommands": [
+ {
+ "command": "find /workspace -maxdepth 2 -not -path '*/node_modules*' -not -path '*/.git*' | sort && echo --- && cat /workspace/package.json",
+ "success": true
+ },
+ {
+ "command": "ls /workspace/node_modules/next/dist/docs/ 2>/dev/null",
+ "success": true
+ },
+ {
+ "command": "find /workspace/node_modules/next/dist/docs/01-app -maxdepth 2 | head -50",
+ "success": true
+ },
+ {
+ "command": "ls /workspace/node_modules/next/dist/docs/01-app/02-guides/migrating/ /workspace/node_modules/next/dist/docs/01-app/01-getting-started/",
+ "success": true
+ },
+ {
+ "command": "grep -n -i \"deprecat\\|BREAKING\\|no longer\\|removed\" /workspace/node_modules/next/dist/docs/01-app/01-getting-started/03-layouts-and-pages.md /workspace/node_modules/next/dist/docs/01-app/01-getting-started/14-metadata-and-og-images.md | head -30",
+ "success": true
+ },
+ {
+ "command": "grep -rn -i \"deprecat\" /workspace/node_modules/next/dist/docs/01-app/03-api-reference/03-file-conventions/layout.md /workspace/node_modules/next/dist/docs/01-app/03-api-reference/03-file-conventions/page.md 2>/dev/null | head; ls /workspace/node_modules/next/dist/docs/01-app/03-api-reference/",
+ "success": true
+ },
+ {
+ "command": "sed -n 1,120p /workspace/node_modules/next/dist/docs/01-app/01-getting-started/14-metadata-and-og-images.md",
+ "success": true
+ },
+ {
+ "command": "grep -n -A 30 \"Root Layout\" /workspace/node_modules/next/dist/docs/01-app/03-api-reference/03-file-conventions/layout.md | head -60",
+ "success": true
+ },
+ {
+ "command": "sed -n 1,60p /workspace/node_modules/next/dist/docs/01-app/01-getting-started/04-linking-and-navigating.md",
+ "success": true
+ },
+ {
+ "command": "rm -rf /workspace/pages && cat /workspace/tsconfig.json /workspace/next.config.ts",
+ "success": true
+ },
+ {
+ "command": "npm run build 2>&1 | tail -30",
+ "success": true
+ },
+ {
+ "command": "(npm run start &) && sleep 4 && curl -s http://localhost:3000/ | grep -o '
` under the hood\n100\t \n101\t About\n102\t\n103\t```\n104\t\n105\tTo upgrade your links to Next.js 13, you can use the [`new-link` codemod](/docs/app/guides/upgrading/codemods#new-link).\n106\t\n107\t### `","is_error":false}]},"uuid":"5673b860-4614-48c9-a028-0064a558e775","timestamp":"2026-06-09T22:37:38.021Z","toolUseResult":{"stdout":"Current theme: dark Preferred language: fr-FR,fr;q=0.9\n---\nCurrent theme: light\nCurrent theme: \\\",[\\\"$\\\",\\\"strong\\\",null,{\\\"children\\\":\\\"light\\\"},\\\"$37\\\",\\\"$7f\\\",1]]},\\\"$37\\\",\\\"$7e\\\",1],[\\\"$\\\",\\\"p\\\",null,{\\\"children\\\":[\\\"Preferred language: \\\",[\\\"$\\\",\\\"strong\\\",null,{\\\"children\\\":\\\"en-US\\\"},\\\"$37\\\",\\\"$81\\\",1]]},\\\"$37\\\",\\\"$80\\\",1]]},\\\"$37\\\",\\\"$7c\\\",1]\\n\"])","stderr":"","interrupted":false,"isImage":false,"noOutputExpected":false},"sourceToolAssistantUUID":"bde959e4-4a0b-4d91-a6d3-867a1951a575","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"e4376400-5ac2-41d4-b22e-110a242f39c0","version":"2.1.170","gitBranch":"master"}
+{"parentUuid":"5673b860-4614-48c9-a028-0064a558e775","isSidechain":false,"message":{"id":"gen_01KTQ8HFW5NC92P7ZKNT2NV8AK","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01X5Mina7sJQ3DkCiBEyxvz3","name":"Bash","input":{"command":"pkill -f \"next dev\" 2>/dev/null; true","description":"Stop the dev server"}}],"model":"claude-fable-5","stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":502,"cache_read_input_tokens":41128,"output_tokens":93,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":0,"ephemeral_5m_input_tokens":502},"inference_geo":"","iterations":[],"speed":"standard"},"stop_details":null},"type":"assistant","uuid":"60e80b1b-ce8d-411e-bb27-89f9b0a12008","timestamp":"2026-06-09T22:37:41.844Z","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"e4376400-5ac2-41d4-b22e-110a242f39c0","version":"2.1.170","gitBranch":"master"}
+{"parentUuid":"60e80b1b-ce8d-411e-bb27-89f9b0a12008","isSidechain":false,"promptId":"20f7425e-64e5-40b9-8f0d-0e1ae708bc23","type":"user","message":{"role":"user","content":[{"type":"tool_result","content":"Exit code 144","is_error":true,"tool_use_id":"toolu_01X5Mina7sJQ3DkCiBEyxvz3"}]},"uuid":"9d31692c-53b1-4197-8be1-79a96c9a8652","timestamp":"2026-06-09T22:37:41.877Z","toolUseResult":"Error: Exit code 144","sourceToolAssistantUUID":"60e80b1b-ce8d-411e-bb27-89f9b0a12008","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"e4376400-5ac2-41d4-b22e-110a242f39c0","version":"2.1.170","gitBranch":"master"}
+{"parentUuid":"9d31692c-53b1-4197-8be1-79a96c9a8652","isSidechain":false,"message":{"id":"gen_01KTQ8HKPDQZBTBQ0YGXFSE0ET","type":"message","role":"assistant","content":[{"type":"thinking","thinking":"","signature":"CAIS5wEKYggOGAIqQHN571DQGhSS/q2/4hbDLo9UqgH1MGmiMAfDhGqlxcVQHs9h7hK0j/vYo2hYNkEubSqTfYsXYL6OC0oApwOqks4yDmNsYXVkZS1mYWJsZS01OAFCCHRoaW5raW5nEgxI62xpQlNQZIw3j1AaDMsIBaY7bTn5l26VTyIw370EqsELlSNJAGKErPL6CCUSjBE8ARWRZnMWsp/fLbrdNzd+dsJt91wXzABuovi9KjMHI1klrEr9nZqhKgMa8FGFNyYRBB7FI9Cy8GKkC//zV/Dg06KfyvlJFZwKmzwYcnlJZMAYAQ=="}],"model":"claude-fable-5","stop_reason":"end_turn","stop_sequence":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":110,"cache_read_input_tokens":41630,"output_tokens":362,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":0,"ephemeral_5m_input_tokens":110},"inference_geo":"","iterations":[],"speed":"standard"},"stop_details":null},"type":"assistant","uuid":"388585a3-bee6-44a8-9950-bd9024f88095","timestamp":"2026-06-09T22:37:49.414Z","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"e4376400-5ac2-41d4-b22e-110a242f39c0","version":"2.1.170","gitBranch":"master"}
+{"parentUuid":"388585a3-bee6-44a8-9950-bd9024f88095","isSidechain":false,"message":{"id":"gen_01KTQ8HKPDQZBTBQ0YGXFSE0ET","type":"message","role":"assistant","content":[{"type":"text","text":"Done and verified. I created a server component at `app/user-preferences.tsx` and rendered it from `app/page.tsx`.\n\nHow it works:\n- It's an async server component using the `cookies()` and `headers()` APIs from `next/headers` — both are async in this Next.js version (16.3 canary), so they must be awaited, per the docs in `node_modules/next/dist/docs/`.\n- The theme comes from `cookieStore.get('theme')?.value`, falling back to `\"light\"` when the cookie is absent.\n- The language comes from the `Accept-Language` request header, falling back to `\"unknown\"` if the header is missing.\n- Since these are request-time APIs, the route is automatically rendered dynamically.\n\nI verified it against a running dev server: a request with `Cookie: theme=dark` and `Accept-Language: fr-FR,fr;q=0.9` rendered \"Current theme: dark / Preferred language: fr-FR,fr;q=0.9\", and a request with no cookie correctly fell back to \"light\". Type-checking passes as well."}],"model":"claude-fable-5","stop_reason":"end_turn","stop_sequence":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":110,"cache_read_input_tokens":41630,"output_tokens":362,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":0,"ephemeral_5m_input_tokens":110},"inference_geo":"","iterations":[],"speed":"standard"},"stop_details":null},"type":"assistant","uuid":"a5243d83-5621-4796-aa7d-80e50d051b63","timestamp":"2026-06-09T22:37:49.446Z","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"e4376400-5ac2-41d4-b22e-110a242f39c0","version":"2.1.170","gitBranch":"master"}
+{"type":"last-prompt","lastPrompt":"Create a server component that reads a \"theme\" cookie and displays the current theme preference. If no theme cookie exists, default to \"light\". The component should also show the user's preferred lang…","leafUuid":"a5243d83-5621-4796-aa7d-80e50d051b63","sessionId":"e4376400-5ac2-41d4-b22e-110a242f39c0"}
+{"type":"ai-title","aiTitle":"Server component for theme and language","sessionId":"e4376400-5ac2-41d4-b22e-110a242f39c0"}
diff --git a/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-034-async-cookies/run-1/transcript.json b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-034-async-cookies/run-1/transcript.json
new file mode 100644
index 000000000..7ffc3e53a
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-034-async-cookies/run-1/transcript.json
@@ -0,0 +1,771 @@
+{
+ "agent": "vercel-ai-gateway/claude-code",
+ "model": "claude-fable-5",
+ "events": [
+ {
+ "timestamp": "2026-06-09T22:36:38.274Z",
+ "type": "message",
+ "role": "user",
+ "content": "Create a server component that reads a \"theme\" cookie and displays the current theme preference. If no theme cookie exists, default to \"light\". The component should also show the user's preferred language from the Accept-Language header.\n",
+ "raw": {
+ "parentUuid": null,
+ "isSidechain": false,
+ "promptId": "20f7425e-64e5-40b9-8f0d-0e1ae708bc23",
+ "type": "user",
+ "message": {
+ "role": "user",
+ "content": "Create a server component that reads a \"theme\" cookie and displays the current theme preference. If no theme cookie exists, default to \"light\". The component should also show the user's preferred language from the Accept-Language header.\n"
+ },
+ "uuid": "870ef62e-2a9d-48f5-a6dd-81aadbb11352",
+ "timestamp": "2026-06-09T22:36:38.274Z",
+ "permissionMode": "bypassPermissions",
+ "promptSource": "sdk",
+ "userType": "external",
+ "entrypoint": "sdk-cli",
+ "cwd": "/workspace",
+ "sessionId": "e4376400-5ac2-41d4-b22e-110a242f39c0",
+ "version": "2.1.170",
+ "gitBranch": "master"
+ }
+ },
+ {
+ "timestamp": "2026-06-09T22:36:42.772Z",
+ "type": "message",
+ "role": "assistant",
+ "content": "I'll first check the project's Next.js docs since this version has breaking changes from what I know.",
+ "raw": {
+ "parentUuid": "2a006cb1-8c39-4cd0-8534-742a8fde08d1",
+ "isSidechain": false,
+ "message": {
+ "id": "gen_01KTQ8FNHJ0PNX49AK1E99T7H5",
+ "type": "message",
+ "role": "assistant",
+ "content": [
+ {
+ "type": "text",
+ "text": "I'll first check the project's Next.js docs since this version has breaking changes from what I know."
+ }
+ ],
+ "model": "claude-fable-5",
+ "stop_reason": "tool_use",
+ "stop_sequence": null,
+ "usage": {
+ "input_tokens": 1,
+ "cache_creation_input_tokens": 5196,
+ "cache_read_input_tokens": 26816,
+ "output_tokens": 214,
+ "server_tool_use": {
+ "web_search_requests": 0,
+ "web_fetch_requests": 0
+ },
+ "service_tier": "standard",
+ "cache_creation": {
+ "ephemeral_1h_input_tokens": 0,
+ "ephemeral_5m_input_tokens": 5196
+ },
+ "inference_geo": "",
+ "iterations": [],
+ "speed": "standard"
+ },
+ "stop_details": null
+ },
+ "type": "assistant",
+ "uuid": "8113f0df-43a7-4ec3-97fa-ccf8024eb8d4",
+ "timestamp": "2026-06-09T22:36:42.772Z",
+ "userType": "external",
+ "entrypoint": "sdk-cli",
+ "cwd": "/workspace",
+ "sessionId": "e4376400-5ac2-41d4-b22e-110a242f39c0",
+ "version": "2.1.170",
+ "gitBranch": "master"
+ }
+ },
+ {
+ "timestamp": "2026-06-09T22:36:43.805Z",
+ "type": "tool_call",
+ "tool": {
+ "name": "shell",
+ "originalName": "Bash",
+ "args": {
+ "command": "ls /workspace/node_modules/next/dist/docs/ 2>/dev/null && cat /workspace/package.json",
+ "description": "List Next.js docs and show package.json",
+ "_extractedCommand": "ls /workspace/node_modules/next/dist/docs/ 2>/dev/null && cat /workspace/package.json"
+ }
+ },
+ "raw": {
+ "name": "Bash",
+ "input": {
+ "command": "ls /workspace/node_modules/next/dist/docs/ 2>/dev/null && cat /workspace/package.json",
+ "description": "List Next.js docs and show package.json"
+ }
+ }
+ },
+ {
+ "timestamp": "2026-06-09T22:36:43.907Z",
+ "type": "tool_result",
+ "tool": {
+ "name": "unknown",
+ "originalName": "toolu_01NhYQcPrjXN3pNDadQCqTRJ",
+ "result": "01-app\n02-pages\n03-architecture\n04-community\nindex.md\n{\n \"private\": true,\n \"type\": \"module\",\n \"scripts\": {\n \"dev\": \"next dev\",\n \"build\": \"next build\",\n \"start\": \"next start\"\n },\n \"dependencies\": {\n \"next\": \"^16.3.0-canary.46\",\n \"react\": \"19.1.0\",\n \"react-dom\": \"19.1.0\"\n },\n \"devDependencies\": {\n \"@types/node\": \"^20\",\n \"@types/react\": \"^19\",\n \"@types/react-dom\": \"^19\",\n \"@vitejs/plugin-react\": \"^4.4.1\",\n \"typescript\": \"^5\",\n \"vite-tsconfig-paths\": \"^5.1.4\",\n \"vitest\": \"^3.1.3\"\n }\n}",
+ "success": true
+ },
+ "raw": {
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+ "result": "1\t---\n2\ttitle: cookies\n3\tdescription: API Reference for the cookies function.\n4\t---\n5\t\n6\t`cookies` is an **async** function that allows you to read the HTTP incoming request cookies in [Server Components](/docs/app/getting-started/server-and-client-components), and read/write outgoing request cookies in [Server Functions](/docs/app/getting-started/mutating-data) or [Route Handlers](/docs/app/api-reference/file-conventions/route).\n7\t\n8\t```tsx filename=\"app/page.tsx\" switcher\n9\timport { cookies } from 'next/headers'\n10\t\n11\texport default async function Page() {\n12\t const cookieStore = await cookies()\n13\t const theme = cookieStore.get('theme')\n14\t return '...'\n15\t}\n16\t```\n17\t\n18\t```js filename=\"app/page.js\" switcher\n19\timport { cookies } from 'next/headers'\n20\t\n21\texport default async function Page() {\n22\t const cookieStore = await cookies()\n23\t const theme = cookieStore.get('theme')\n24\t return '...'\n25\t}\n26\t```\n27\t\n28\t## Reference\n29\t\n30\t### Methods\n31\t\n32\tThe following methods are available:\n33\t\n34\t| Method | Return Type | Description |\n35\t| --------------------------- | ---------------- | ------------------------------------------------------------------------------- |\n36\t| `get('name')` | Object | Accepts a cookie name and returns an object with the name and value. |\n37\t| `getAll()` | Array of objects | Returns a list of all the cookies with a matching name. |\n38\t| `has('name')` | Boolean | Accepts a cookie name and returns a boolean based on if the cookie exists. |\n39\t| `set(name, value, options)` | - | Accepts a cookie name, value, and options and sets the outgoing request cookie. |\n40\t| `delete(name)` | - | Accepts a cookie name and deletes the cookie. |\n41\t| `toString()` | String | Returns a string representation of the cookies. |\n42\t\n43\t### Options\n44\t\n45\tWhen setting a cookie, the following properties from the `options` object are supported:\n46\t\n47\t| Option | Type | Description |\n48\t| ------------- | -------------------------------------- | ---------------------------------------------------------------------------------- |\n49\t| `name` | String | Specifies the name of the cookie. |\n50\t| `value` | String | Specifies the value to be stored in the cookie. |\n51\t| `expires` | Date | Defines the exact date when the cookie will expire. |\n52\t| `maxAge` | Number | Sets the cookie’s lifespan in seconds. |\n53\t| `domain` | String | Specifies the domain where the cookie is available. |\n54\t| `path` | String, default: `'/'` | Limits the cookie's scope to a specific path within the domain. |\n55\t| `secure` | Boolean | Ensures the cookie is sent only over HTTPS connections for added security. |\n56\t| `httpOnly` | Boolean | Restricts the cookie to HTTP requests, preventing client-side access. |\n57\t| `sameSite` | Boolean, `'lax'`, `'strict'`, `'none'` | Controls the cookie's cross-site request behavior. |\n58\t| `priority` | String (`\"low\"`, `\"medium\"`, `\"high\"`) | Specifies the cookie's priority |\n59\t| `partitioned` | Boolean | Indicates whether the cookie is [partitioned](https://github.com/privacycg/CHIPS). |\n60\t\n61\tThe only option with a default value is `path`.\n62\t\n63\tTo learn more about these options, see the [MDN docs](https://developer.mozilla.org/en-US/docs/Web/HTTP/Cookies).\n64\t\n65\t## Good to know\n66\t\n67\t- `cookies` is an **asynchronous** function that returns a promise. You must use `async/await` or React's [`use`](https://react.dev/reference/react/use) function to access cookies.\n68\t - In version 14 and earlier, `cookies` was a synchronous function. To help with backwards compatibility, you can still access it synchronously in Next.js 15, but this behavior will be deprecated in the future.\n69\t- `cookies` is a [Request-time API](/docs/app/glossary#request-time-apis) whose returned values cannot be known ahead of time. Using it in a layout or page will opt a route into [dynamic rendering](/docs/app/glossary#dynamic-rendering).\n70\t- The `.delete` method can only be called:\n71\t - In a [Server Function](/docs/app/getting-started/mutating-data) or [Route Handler](/docs/app/api-reference/file-conventions/route).\n72\t - If it belongs to the same domain from which `.set` is called. For wildcard domains, the specific subdomain must be an exact match. Additionally, the code must be executed on the same protocol (HTTP or HTTPS) as the cookie you want to delete.\n73\t- HTTP does not allow setting cookies after streaming starts, so you must use `.set` in a [Server Function](/docs/app/getting-started/mutating-data) or [Route Handler](/docs/app/api-reference/file-conventions/route).\n74\t\n75\t## Understanding Cookie Behavior in Server Components\n76\t\n77\tWhen working with cookies in Server Components, it's important to understand that cookies are fundamentally a client-side storage mechanism:\n78\t\n79\t- **Reading cookies** works in Server Components because you're accessing the cookie data that the client's browser sends to the server in the HTTP request headers.\n80\t- **Setting cookies** is not supported during Server Component rendering. To modify cookies, invoke a Server Function from the client or use a Route Handler.\n81\t\n82\tThe server can only send instructions (via `Set-Cookie` headers) to tell the browser to store cookies - the actual storage happens on the client side. This is why cookie operations that modify state (`.set`, `.delete`) must be performed in a Server Function or Route Handler where the response headers can be properly set.\n83\t\n84\t## Understanding Cookie Behavior in Server Functions\n85\t\n86\tAfter you set or delete a cookie in a Server Function, Next.js can return both the updated UI and new data in a single server roundtrip when the function is used as a [Server Action](/docs/app/getting-started/mutating-data#what-are-server-functions) (e.g., passed to a form's `action` prop). See [Caching and Revalidating](/docs/app/getting-started/caching).\n87\t\n88\tThe UI is not unmounted, but effects that depend on data coming from the server will re-run.\n89\t\n90\tTo refresh cached data too, call [`revalidatePath`](/docs/app/api-reference/functions/revalidatePath) or [`revalidateTag`](/docs/app/api-reference/functions/revalidateTag) inside the function.\n91\t\n92\t## Examples\n93\t\n94\t### Getting a cookie\n95\t\n96\tYou can use the `(await cookies()).get('name')` method to get a single cookie:\n97\t\n98\t```tsx filename=\"app/page.tsx\" switcher\n99\timport { cookies } from 'next/headers'\n100\t\n101\texport default async function Page() {\n102\t const cookieStore = await cookies()\n103\t const theme = cookieStore.get('theme')\n104\t return '...'\n105\t}\n106\t```\n107\t\n108\t```jsx filename=\"app/page.js\" switcher\n109\timport { cookies } from 'next/headers'\n110\t\n111\texport default async function Page() {\n112\t const cookieStore = await cookies()\n113\t const theme = cookieStore.get('theme')\n114\t return '...'\n115\t}\n116\t```\n117\t\n118\t### Getting all cookies\n119\t\n120\tYou can use the `(await cookies()).getAll()` method to get all cookies with a matching name. If `name` is unspecified, it returns all the available cookies.\n121\t\n122\t```tsx filename=\"app/page.tsx\" switcher\n123\timport { cookies } from 'next/headers'\n124\t\n125\texport default async function Page() {\n126\t const cookieStore = await cookies()\n127\t return cookieStore.getAll().map((cookie) => (\n128\t \n129\t
Name: {cookie.name}
\n130\t
Value: {cookie.value}
\n131\t
\n132\t ))\n133\t}\n134\t```\n135\t\n136\t```jsx filename=\"app/page.js\" switcher\n137\timport { cookies } from 'next/headers'\n138\t\n139\texport default async function Page() {\n140\t const cookieStore = await cookies()\n141\t return cookieStore.getAll().map((cookie) => (\n142\t \n143\t
Name: {cookie.name}
\n144\t
Value: {cookie.value}
\n145\t
\n146\t ))\n147\t}\n148\t```\n149\t\n150\t### Setting a cookie\n151\t\n152\tYou can use the `(await cookies()).set(name, value, options)` method in a [Server Function](/docs/app/getting-started/mutating-data) or [Route Handler](/docs/app/api-reference/file-conventions/route) to set a cookie. The [`options` object](#options) is optional.\n153\t\n154\t```tsx filename=\"app/actions.ts\" switcher\n155\t'use server'\n156\t\n157\timport { cookies } from 'next/headers'\n158\t\n159\texport async function create(data) {\n160\t const cookieStore = await cookies()\n161\t\n162\t cookieStore.set('name', 'lee')\n163\t // or\n164\t cookieStore.set('name', 'lee', { secure: true })\n165\t // or\n166\t cookieStore.set({\n167\t name: 'name',\n168\t value: 'lee',\n169\t httpOnly: true,\n170\t path: '/',\n171\t })\n172\t}\n173\t```\n174\t\n175\t```js filename=\"app/actions.js\" switcher\n176\t'use server'\n177\t\n178\timport { cookies } from 'next/headers'\n179\t\n180\texport async function create(data) {\n181\t const cookieStore = await cookies()\n182\t\n183\t cookieStore.set('name', 'lee')\n184\t // or\n185\t cookieStore.set('name', 'lee', { secure: true })\n186\t // or\n187\t cookieStore.set({\n188\t name: 'name',\n189\t value: 'lee',\n190\t httpOnly: true,\n191\t path: '/',\n192\t })\n193\t}\n194\t```\n195\t\n196\t### Checking if a cookie exists\n197\t\n198\tYou can use the `(await cookies()).has(name)` method to check if a cookie exists:\n199\t\n200\t```tsx filename=\"app/page.ts\" switcher\n201\timport { cookies } from 'next/headers'\n202\t\n203\texport default async function Page() {\n204\t const cookieStore = await cookies()\n205\t const hasCookie = cookieStore.has('theme')\n206\t return '...'\n207\t}\n208\t```\n209\t\n210\t```jsx filename=\"app/page.js\" switcher\n211\timport { cookies } from 'next/headers'\n212\t\n213\texport default async function Page() {\n214\t const cookieStore = await cookies()\n215\t const hasCookie = cookieStore.has('theme')\n216\t return '...'\n217\t}\n218\t```\n219\t\n220\t### Deleting cookies\n221\t\n222\tThere are three ways you can delete a cookie.\n223\t\n224\tUsing the `delete()` method:\n225\t\n226\t```tsx filename=\"app/actions.ts\" switcher\n227\t'use server'\n228\t\n229\timport { cookies } from 'next/headers'\n230\t\n231\texport async function deleteCookie(data) {\n232\t const cookieStore = await cookies()\n233\t cookieStore.delete('name')\n234\t}\n235\t```\n236\t\n237\t```js filename=\"app/actions.js\" switcher\n238\t'use server'\n239\t\n240\timport { cookies } from 'next/headers'\n241\t\n242\texport async function deleteCookie(data) {\n243\t const cookieStore = await cookies()\n244\t cookieStore.delete('name')\n245\t}\n246\t```\n247\t\n248\tSetting a new cookie with the same name and an empty value:\n249\t\n250\t```tsx filename=\"app/actions.ts\" switcher\n251\t'use server'\n252\t\n253\timport { cookies } from 'next/headers'\n254\t\n255\texport async function deleteCookie(data) {\n256\t const cookieStore = await cookies()\n257\t cookieStore.set('name', '')\n258\t}\n259\t```\n260\t\n261\t```js filename=\"app/actions.js\" switcher\n262\t'use server'\n263\t\n264\timport { cookies } from 'next/headers'\n265\t\n266\texport async function deleteCookie(data) {\n267\t const cookieStore = await cookies()\n268\t cookieStore.set('name', '')\n269\t}\n270\t```\n271\t\n272\tSetting the `maxAge` to 0 will immediately expire a cookie. `maxAge` accepts a value in seconds.\n273\t\n274\t```tsx filename=\"app/actions.ts\" switcher\n275\t'use server'\n276\t\n277\timport { cookies } from 'next/headers'\n278\t\n279\texport async function deleteCookie(data) {\n280\t const cookieStore = await cookies()\n281\t cookieStore.set('name', 'value', { maxAge: 0 })\n282\t}\n283\t```\n284\t\n285\t```js filename=\"app/actions.js\" switcher\n286\t'use server'\n287\t\n288\timport { cookies } from 'next/headers'\n289\t\n290\texport async function deleteCookie(data) {\n291\t const cookieStore = await cookies()\n292\t cookieStore.set('name', 'value', { maxAge: 0 })\n293\t}\n294\t```\n295\t\n296\t## Version History\n297\t\n298\t| Version | Changes |\n299\t| ------------ | ------------------------------------------------------------------------------------------------------ |\n300\t| `v15.0.0-RC` | `cookies` is now an async function. A [codemod](/docs/app/guides/upgrading/codemods#150) is available. |\n301\t| `v13.0.0` | `cookies` introduced. |\n302\t",
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+ "content": "1\t---\n2\ttitle: cookies\n3\tdescription: API Reference for the cookies function.\n4\t---\n5\t\n6\t`cookies` is an **async** function that allows you to read the HTTP incoming request cookies in [Server Components](/docs/app/getting-started/server-and-client-components), and read/write outgoing request cookies in [Server Functions](/docs/app/getting-started/mutating-data) or [Route Handlers](/docs/app/api-reference/file-conventions/route).\n7\t\n8\t```tsx filename=\"app/page.tsx\" switcher\n9\timport { cookies } from 'next/headers'\n10\t\n11\texport default async function Page() {\n12\t const cookieStore = await cookies()\n13\t const theme = cookieStore.get('theme')\n14\t return '...'\n15\t}\n16\t```\n17\t\n18\t```js filename=\"app/page.js\" switcher\n19\timport { cookies } from 'next/headers'\n20\t\n21\texport default async function Page() {\n22\t const cookieStore = await cookies()\n23\t const theme = cookieStore.get('theme')\n24\t return '...'\n25\t}\n26\t```\n27\t\n28\t## Reference\n29\t\n30\t### Methods\n31\t\n32\tThe following methods are available:\n33\t\n34\t| Method | Return Type | Description |\n35\t| --------------------------- | ---------------- | ------------------------------------------------------------------------------- |\n36\t| `get('name')` | Object | Accepts a cookie name and returns an object with the name and value. |\n37\t| `getAll()` | Array of objects | Returns a list of all the cookies with a matching name. |\n38\t| `has('name')` | Boolean | Accepts a cookie name and returns a boolean based on if the cookie exists. |\n39\t| `set(name, value, options)` | - | Accepts a cookie name, value, and options and sets the outgoing request cookie. |\n40\t| `delete(name)` | - | Accepts a cookie name and deletes the cookie. |\n41\t| `toString()` | String | Returns a string representation of the cookies. |\n42\t\n43\t### Options\n44\t\n45\tWhen setting a cookie, the following properties from the `options` object are supported:\n46\t\n47\t| Option | Type | Description |\n48\t| ------------- | -------------------------------------- | ---------------------------------------------------------------------------------- |\n49\t| `name` | String | Specifies the name of the cookie. |\n50\t| `value` | String | Specifies the value to be stored in the cookie. |\n51\t| `expires` | Date | Defines the exact date when the cookie will expire. |\n52\t| `maxAge` | Number | Sets the cookie’s lifespan in seconds. |\n53\t| `domain` | String | Specifies the domain where the cookie is available. |\n54\t| `path` | String, default: `'/'` | Limits the cookie's scope to a specific path within the domain. |\n55\t| `secure` | Boolean | Ensures the cookie is sent only over HTTPS connections for added security. |\n56\t| `httpOnly` | Boolean | Restricts the cookie to HTTP requests, preventing client-side access. |\n57\t| `sameSite` | Boolean, `'lax'`, `'strict'`, `'none'` | Controls the cookie's cross-site request behavior. |\n58\t| `priority` | String (`\"low\"`, `\"medium\"`, `\"high\"`) | Specifies the cookie's priority |\n59\t| `partitioned` | Boolean | Indicates whether the cookie is [partitioned](https://github.com/privacycg/CHIPS). |\n60\t\n61\tThe only option with a default value is `path`.\n62\t\n63\tTo learn more about these options, see the [MDN docs](https://developer.mozilla.org/en-US/docs/Web/HTTP/Cookies).\n64\t\n65\t## Good to know\n66\t\n67\t- `cookies` is an **asynchronous** function that returns a promise. You must use `async/await` or React's [`use`](https://react.dev/reference/react/use) function to access cookies.\n68\t - In version 14 and earlier, `cookies` was a synchronous function. To help with backwards compatibility, you can still access it synchronously in Next.js 15, but this behavior will be deprecated in the future.\n69\t- `cookies` is a [Request-time API](/docs/app/glossary#request-time-apis) whose returned values cannot be known ahead of time. Using it in a layout or page will opt a route into [dynamic rendering](/docs/app/glossary#dynamic-rendering).\n70\t- The `.delete` method can only be called:\n71\t - In a [Server Function](/docs/app/getting-started/mutating-data) or [Route Handler](/docs/app/api-reference/file-conventions/route).\n72\t - If it belongs to the same domain from which `.set` is called. For wildcard domains, the specific subdomain must be an exact match. Additionally, the code must be executed on the same protocol (HTTP or HTTPS) as the cookie you want to delete.\n73\t- HTTP does not allow setting cookies after streaming starts, so you must use `.set` in a [Server Function](/docs/app/getting-started/mutating-data) or [Route Handler](/docs/app/api-reference/file-conventions/route).\n74\t\n75\t## Understanding Cookie Behavior in Server Components\n76\t\n77\tWhen working with cookies in Server Components, it's important to understand that cookies are fundamentally a client-side storage mechanism:\n78\t\n79\t- **Reading cookies** works in Server Components because you're accessing the cookie data that the client's browser sends to the server in the HTTP request headers.\n80\t- **Setting cookies** is not supported during Server Component rendering. To modify cookies, invoke a Server Function from the client or use a Route Handler.\n81\t\n82\tThe server can only send instructions (via `Set-Cookie` headers) to tell the browser to store cookies - the actual storage happens on the client side. This is why cookie operations that modify state (`.set`, `.delete`) must be performed in a Server Function or Route Handler where the response headers can be properly set.\n83\t\n84\t## Understanding Cookie Behavior in Server Functions\n85\t\n86\tAfter you set or delete a cookie in a Server Function, Next.js can return both the updated UI and new data in a single server roundtrip when the function is used as a [Server Action](/docs/app/getting-started/mutating-data#what-are-server-functions) (e.g., passed to a form's `action` prop). See [Caching and Revalidating](/docs/app/getting-started/caching).\n87\t\n88\tThe UI is not unmounted, but effects that depend on data coming from the server will re-run.\n89\t\n90\tTo refresh cached data too, call [`revalidatePath`](/docs/app/api-reference/functions/revalidatePath) or [`revalidateTag`](/docs/app/api-reference/functions/revalidateTag) inside the function.\n91\t\n92\t## Examples\n93\t\n94\t### Getting a cookie\n95\t\n96\tYou can use the `(await cookies()).get('name')` method to get a single cookie:\n97\t\n98\t```tsx filename=\"app/page.tsx\" switcher\n99\timport { cookies } from 'next/headers'\n100\t\n101\texport default async function Page() {\n102\t const cookieStore = await cookies()\n103\t const theme = cookieStore.get('theme')\n104\t return '...'\n105\t}\n106\t```\n107\t\n108\t```jsx filename=\"app/page.js\" switcher\n109\timport { cookies } from 'next/headers'\n110\t\n111\texport default async function Page() {\n112\t const cookieStore = await cookies()\n113\t const theme = cookieStore.get('theme')\n114\t return '...'\n115\t}\n116\t```\n117\t\n118\t### Getting all cookies\n119\t\n120\tYou can use the `(await cookies()).getAll()` method to get all cookies with a matching name. If `name` is unspecified, it returns all the available cookies.\n121\t\n122\t```tsx filename=\"app/page.tsx\" switcher\n123\timport { cookies } from 'next/headers'\n124\t\n125\texport default async function Page() {\n126\t const cookieStore = await cookies()\n127\t return cookieStore.getAll().map((cookie) => (\n128\t \n129\t
Name: {cookie.name}
\n130\t
Value: {cookie.value}
\n131\t
\n132\t ))\n133\t}\n134\t```\n135\t\n136\t```jsx filename=\"app/page.js\" switcher\n137\timport { cookies } from 'next/headers'\n138\t\n139\texport default async function Page() {\n140\t const cookieStore = await cookies()\n141\t return cookieStore.getAll().map((cookie) => (\n142\t \n143\t
Name: {cookie.name}
\n144\t
Value: {cookie.value}
\n145\t
\n146\t ))\n147\t}\n148\t```\n149\t\n150\t### Setting a cookie\n151\t\n152\tYou can use the `(await cookies()).set(name, value, options)` method in a [Server Function](/docs/app/getting-started/mutating-data) or [Route Handler](/docs/app/api-reference/file-conventions/route) to set a cookie. The [`options` object](#options) is optional.\n153\t\n154\t```tsx filename=\"app/actions.ts\" switcher\n155\t'use server'\n156\t\n157\timport { cookies } from 'next/headers'\n158\t\n159\texport async function create(data) {\n160\t const cookieStore = await cookies()\n161\t\n162\t cookieStore.set('name', 'lee')\n163\t // or\n164\t cookieStore.set('name', 'lee', { secure: true })\n165\t // or\n166\t cookieStore.set({\n167\t name: 'name',\n168\t value: 'lee',\n169\t httpOnly: true,\n170\t path: '/',\n171\t })\n172\t}\n173\t```\n174\t\n175\t```js filename=\"app/actions.js\" switcher\n176\t'use server'\n177\t\n178\timport { cookies } from 'next/headers'\n179\t\n180\texport async function create(data) {\n181\t const cookieStore = await cookies()\n182\t\n183\t cookieStore.set('name', 'lee')\n184\t // or\n185\t cookieStore.set('name', 'lee', { secure: true })\n186\t // or\n187\t cookieStore.set({\n188\t name: 'name',\n189\t value: 'lee',\n190\t httpOnly: true,\n191\t path: '/',\n192\t })\n193\t}\n194\t```\n195\t\n196\t### Checking if a cookie exists\n197\t\n198\tYou can use the `(await cookies()).has(name)` method to check if a cookie exists:\n199\t\n200\t```tsx filename=\"app/page.ts\" switcher\n201\timport { cookies } from 'next/headers'\n202\t\n203\texport default async function Page() {\n204\t const cookieStore = await cookies()\n205\t const hasCookie = cookieStore.has('theme')\n206\t return '...'\n207\t}\n208\t```\n209\t\n210\t```jsx filename=\"app/page.js\" switcher\n211\timport { cookies } from 'next/headers'\n212\t\n213\texport default async function Page() {\n214\t const cookieStore = await cookies()\n215\t const hasCookie = cookieStore.has('theme')\n216\t return '...'\n217\t}\n218\t```\n219\t\n220\t### Deleting cookies\n221\t\n222\tThere are three ways you can delete a cookie.\n223\t\n224\tUsing the `delete()` method:\n225\t\n226\t```tsx filename=\"app/actions.ts\" switcher\n227\t'use server'\n228\t\n229\timport { cookies } from 'next/headers'\n230\t\n231\texport async function deleteCookie(data) {\n232\t const cookieStore = await cookies()\n233\t cookieStore.delete('name')\n234\t}\n235\t```\n236\t\n237\t```js filename=\"app/actions.js\" switcher\n238\t'use server'\n239\t\n240\timport { cookies } from 'next/headers'\n241\t\n242\texport async function deleteCookie(data) {\n243\t const cookieStore = await cookies()\n244\t cookieStore.delete('name')\n245\t}\n246\t```\n247\t\n248\tSetting a new cookie with the same name and an empty value:\n249\t\n250\t```tsx filename=\"app/actions.ts\" switcher\n251\t'use server'\n252\t\n253\timport { cookies } from 'next/headers'\n254\t\n255\texport async function deleteCookie(data) {\n256\t const cookieStore = await cookies()\n257\t cookieStore.set('name', '')\n258\t}\n259\t```\n260\t\n261\t```js filename=\"app/actions.js\" switcher\n262\t'use server'\n263\t\n264\timport { cookies } from 'next/headers'\n265\t\n266\texport async function deleteCookie(data) {\n267\t const cookieStore = await cookies()\n268\t cookieStore.set('name', '')\n269\t}\n270\t```\n271\t\n272\tSetting the `maxAge` to 0 will immediately expire a cookie. `maxAge` accepts a value in seconds.\n273\t\n274\t```tsx filename=\"app/actions.ts\" switcher\n275\t'use server'\n276\t\n277\timport { cookies } from 'next/headers'\n278\t\n279\texport async function deleteCookie(data) {\n280\t const cookieStore = await cookies()\n281\t cookieStore.set('name', 'value', { maxAge: 0 })\n282\t}\n283\t```\n284\t\n285\t```js filename=\"app/actions.js\" switcher\n286\t'use server'\n287\t\n288\timport { cookies } from 'next/headers'\n289\t\n290\texport async function deleteCookie(data) {\n291\t const cookieStore = await cookies()\n292\t cookieStore.set('name', 'value', { maxAge: 0 })\n293\t}\n294\t```\n295\t\n296\t## Version History\n297\t\n298\t| Version | Changes |\n299\t| ------------ | ------------------------------------------------------------------------------------------------------ |\n300\t| `v15.0.0-RC` | `cookies` is now an async function. A [codemod](/docs/app/guides/upgrading/codemods#150) is available. |\n301\t| `v13.0.0` | `cookies` introduced. |\n302\t"
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+ "result": "1\t---\n2\ttitle: headers\n3\tdescription: API reference for the headers function.\n4\t---\n5\t\n6\t`headers` is an **async** function that allows you to **read** the HTTP incoming request headers from a [Server Component](/docs/app/getting-started/server-and-client-components).\n7\t\n8\t```tsx filename=\"app/page.tsx\" switcher\n9\timport { headers } from 'next/headers'\n10\t\n11\texport default async function Page() {\n12\t const headersList = await headers()\n13\t const userAgent = headersList.get('user-agent')\n14\t}\n15\t```\n16\t\n17\t```jsx filename=\"app/page.js\" switcher\n18\timport { headers } from 'next/headers'\n19\t\n20\texport default async function Page() {\n21\t const headersList = await headers()\n22\t const userAgent = headersList.get('user-agent')\n23\t}\n24\t```\n25\t\n26\t## Reference\n27\t\n28\t### Parameters\n29\t\n30\t`headers` does not take any parameters.\n31\t\n32\t### Returns\n33\t\n34\t`headers` returns a **read-only** [Web Headers](https://developer.mozilla.org/docs/Web/API/Headers) object.\n35\t\n36\t- [`Headers.entries()`](https://developer.mozilla.org/docs/Web/API/Headers/entries): Returns an [`iterator`](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Iteration_protocols) allowing to go through all key/value pairs contained in this object.\n37\t- [`Headers.forEach()`](https://developer.mozilla.org/docs/Web/API/Headers/forEach): Executes a provided function once for each key/value pair in this `Headers` object.\n38\t- [`Headers.get()`](https://developer.mozilla.org/docs/Web/API/Headers/get): Returns a [`String`](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String) sequence of all the values of a header within a `Headers` object with a given name.\n39\t- [`Headers.has()`](https://developer.mozilla.org/docs/Web/API/Headers/has): Returns a boolean stating whether a `Headers` object contains a certain header.\n40\t- [`Headers.keys()`](https://developer.mozilla.org/docs/Web/API/Headers/keys): Returns an [`iterator`](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Iteration_protocols) allowing you to go through all keys of the key/value pairs contained in this object.\n41\t- [`Headers.values()`](https://developer.mozilla.org/docs/Web/API/Headers/values): Returns an [`iterator`](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Iteration_protocols) allowing you to go through all values of the key/value pairs contained in this object.\n42\t\n43\t## Good to know\n44\t\n45\t- `headers` is an **asynchronous** function that returns a promise. You must use `async/await` or React's [`use`](https://react.dev/reference/react/use) function.\n46\t - In version 14 and earlier, `headers` was a synchronous function. To help with backwards compatibility, you can still access it synchronously in Next.js 15, but this behavior will be deprecated in the future.\n47\t- Since `headers` is read-only, you cannot `set` or `delete` the outgoing request headers.\n48\t- `headers` is a [Request-time API](/docs/app/glossary#request-time-apis) whose returned values cannot be known ahead of time. Using it in will opt a route into **[dynamic rendering](/docs/app/glossary#dynamic-rendering)**.\n49\t\n50\t## Examples\n51\t\n52\t### Using the Authorization header\n53\t\n54\t```jsx filename=\"app/page.js\"\n55\timport { headers } from 'next/headers'\n56\t\n57\texport default async function Page() {\n58\t const authorization = (await headers()).get('authorization')\n59\t const res = await fetch('...', {\n60\t headers: { authorization }, // Forward the authorization header\n61\t })\n62\t const user = await res.json()\n63\t\n64\t return {user.name} \n65\t}\n66\t```\n67\t\n68\t## Version History\n69\t\n70\t| Version | Changes |\n71\t| ------------ | ------------------------------------------------------------------------------------------------------ |\n72\t| `v15.0.0-RC` | `headers` is now an async function. A [codemod](/docs/app/guides/upgrading/codemods#150) is available. |\n73\t| `v13.0.0` | `headers` introduced. |\n74\t",
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+ "content": "1\t---\n2\ttitle: headers\n3\tdescription: API reference for the headers function.\n4\t---\n5\t\n6\t`headers` is an **async** function that allows you to **read** the HTTP incoming request headers from a [Server Component](/docs/app/getting-started/server-and-client-components).\n7\t\n8\t```tsx filename=\"app/page.tsx\" switcher\n9\timport { headers } from 'next/headers'\n10\t\n11\texport default async function Page() {\n12\t const headersList = await headers()\n13\t const userAgent = headersList.get('user-agent')\n14\t}\n15\t```\n16\t\n17\t```jsx filename=\"app/page.js\" switcher\n18\timport { headers } from 'next/headers'\n19\t\n20\texport default async function Page() {\n21\t const headersList = await headers()\n22\t const userAgent = headersList.get('user-agent')\n23\t}\n24\t```\n25\t\n26\t## Reference\n27\t\n28\t### Parameters\n29\t\n30\t`headers` does not take any parameters.\n31\t\n32\t### Returns\n33\t\n34\t`headers` returns a **read-only** [Web Headers](https://developer.mozilla.org/docs/Web/API/Headers) object.\n35\t\n36\t- [`Headers.entries()`](https://developer.mozilla.org/docs/Web/API/Headers/entries): Returns an [`iterator`](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Iteration_protocols) allowing to go through all key/value pairs contained in this object.\n37\t- [`Headers.forEach()`](https://developer.mozilla.org/docs/Web/API/Headers/forEach): Executes a provided function once for each key/value pair in this `Headers` object.\n38\t- [`Headers.get()`](https://developer.mozilla.org/docs/Web/API/Headers/get): Returns a [`String`](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String) sequence of all the values of a header within a `Headers` object with a given name.\n39\t- [`Headers.has()`](https://developer.mozilla.org/docs/Web/API/Headers/has): Returns a boolean stating whether a `Headers` object contains a certain header.\n40\t- [`Headers.keys()`](https://developer.mozilla.org/docs/Web/API/Headers/keys): Returns an [`iterator`](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Iteration_protocols) allowing you to go through all keys of the key/value pairs contained in this object.\n41\t- [`Headers.values()`](https://developer.mozilla.org/docs/Web/API/Headers/values): Returns an [`iterator`](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Iteration_protocols) allowing you to go through all values of the key/value pairs contained in this object.\n42\t\n43\t## Good to know\n44\t\n45\t- `headers` is an **asynchronous** function that returns a promise. You must use `async/await` or React's [`use`](https://react.dev/reference/react/use) function.\n46\t - In version 14 and earlier, `headers` was a synchronous function. To help with backwards compatibility, you can still access it synchronously in Next.js 15, but this behavior will be deprecated in the future.\n47\t- Since `headers` is read-only, you cannot `set` or `delete` the outgoing request headers.\n48\t- `headers` is a [Request-time API](/docs/app/glossary#request-time-apis) whose returned values cannot be known ahead of time. Using it in will opt a route into **[dynamic rendering](/docs/app/glossary#dynamic-rendering)**.\n49\t\n50\t## Examples\n51\t\n52\t### Using the Authorization header\n53\t\n54\t```jsx filename=\"app/page.js\"\n55\timport { headers } from 'next/headers'\n56\t\n57\texport default async function Page() {\n58\t const authorization = (await headers()).get('authorization')\n59\t const res = await fetch('...', {\n60\t headers: { authorization }, // Forward the authorization header\n61\t })\n62\t const user = await res.json()\n63\t\n64\t return {user.name} \n65\t}\n66\t```\n67\t\n68\t## Version History\n69\t\n70\t| Version | Changes |\n71\t| ------------ | ------------------------------------------------------------------------------------------------------ |\n72\t| `v15.0.0-RC` | `headers` is now an async function. A [codemod](/docs/app/guides/upgrading/codemods#150) is available. |\n73\t| `v13.0.0` | `headers` introduced. |\n74\t"
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\n \n )\n}",
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+ "_extractedPath": "/workspace/app/page.tsx"
+ }
+ },
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\n \n )\n}",
+ "new_string": "import UserPreferences from './user-preferences'\n\nexport default function Home() {\n return (\n \n User Preferences \n \n \n )\n}"
+ }
+ }
+ },
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+ "success": true
+ },
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+ "type": "tool_result",
+ "content": "The file /workspace/app/page.tsx has been updated successfully. (file state is current in your context — no need to Read it back)"
+ }
+ },
+ {
+ "timestamp": "2026-06-09T22:37:21.035Z",
+ "type": "message",
+ "role": "assistant",
+ "content": "Let me verify it works by building and hitting the dev server with a theme cookie.",
+ "raw": {
+ "parentUuid": "8756b0e9-5145-47c0-b238-8afde31d0d5f",
+ "isSidechain": false,
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+ "type": "message",
+ "role": "assistant",
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+ {
+ "type": "text",
+ "text": "Let me verify it works by building and hitting the dev server with a theme cookie."
+ }
+ ],
+ "model": "claude-fable-5",
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+ "server_tool_use": {
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+ "web_fetch_requests": 0
+ },
+ "service_tier": "standard",
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+ "ephemeral_1h_input_tokens": 0,
+ "ephemeral_5m_input_tokens": 300
+ },
+ "inference_geo": "",
+ "iterations": [],
+ "speed": "standard"
+ },
+ "stop_details": null
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+ "timestamp": "2026-06-09T22:37:21.035Z",
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+ "sessionId": "e4376400-5ac2-41d4-b22e-110a242f39c0",
+ "version": "2.1.170",
+ "gitBranch": "master"
+ }
+ },
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+ "timestamp": "2026-06-09T22:37:21.222Z",
+ "type": "tool_call",
+ "tool": {
+ "name": "shell",
+ "originalName": "Bash",
+ "args": {
+ "command": "npx tsc --noEmit 2>&1 | head -20",
+ "description": "Type-check the project",
+ "_extractedCommand": "npx tsc --noEmit 2>&1 | head -20"
+ }
+ },
+ "raw": {
+ "name": "Bash",
+ "input": {
+ "command": "npx tsc --noEmit 2>&1 | head -20",
+ "description": "Type-check the project"
+ }
+ }
+ },
+ {
+ "timestamp": "2026-06-09T22:37:23.112Z",
+ "type": "tool_result",
+ "tool": {
+ "name": "unknown",
+ "originalName": "toolu_01QoUw8sSDKUrFAxc4iAhJeJ",
+ "result": "(Bash completed with no output)",
+ "success": true
+ },
+ "raw": {
+ "tool_use_id": "toolu_01QoUw8sSDKUrFAxc4iAhJeJ",
+ "type": "tool_result",
+ "content": "(Bash completed with no output)",
+ "is_error": false
+ }
+ },
+ {
+ "timestamp": "2026-06-09T22:37:28.077Z",
+ "type": "tool_call",
+ "tool": {
+ "name": "shell",
+ "originalName": "Bash",
+ "args": {
+ "command": "(npm run dev > /tmp/dev.log 2>&1 &) && sleep 8 && curl -s -H 'Cookie: theme=dark' -H 'Accept-Language: fr-FR,fr;q=0.9' http://localhost:3000 | grep -o 'Current theme:.*language[^<]*[^<]*' ; echo '---'; curl -s -H 'Accept-Language: en-US' http://localhost:3000 | grep -o 'Current theme:[^<]*<[^>]*>[^<]*'",
+ "description": "Start dev server and test with/without theme cookie",
+ "_extractedCommand": "(npm run dev > /tmp/dev.log 2>&1 &) && sleep 8 && curl -s -H 'Cookie: theme=dark' -H 'Accept-Language: fr-FR,fr;q=0.9' http://localhost:3000 | grep -o 'Current theme:.*language[^<]*[^<]*' ; echo '---'; curl -s -H 'Accept-Language: en-US' http://localhost:3000 | grep -o 'Current theme:[^<]*<[^>]*>[^<]*'"
+ }
+ },
+ "raw": {
+ "name": "Bash",
+ "input": {
+ "command": "(npm run dev > /tmp/dev.log 2>&1 &) && sleep 8 && curl -s -H 'Cookie: theme=dark' -H 'Accept-Language: fr-FR,fr;q=0.9' http://localhost:3000 | grep -o 'Current theme:.*language[^<]*[^<]*' ; echo '---'; curl -s -H 'Accept-Language: en-US' http://localhost:3000 | grep -o 'Current theme:[^<]*<[^>]*>[^<]*'",
+ "description": "Start dev server and test with/without theme cookie"
+ }
+ }
+ },
+ {
+ "timestamp": "2026-06-09T22:37:38.021Z",
+ "type": "tool_result",
+ "tool": {
+ "name": "unknown",
+ "originalName": "toolu_01SpNHo44dxJvpgxWn5Rs8gT",
+ "result": "Current theme: dark
Preferred language: fr-FR,fr;q=0.9\n---\nCurrent theme: light\nCurrent theme: \\\",[\\\"$\\\",\\\"strong\\\",null,{\\\"children\\\":\\\"light\\\"},\\\"$37\\\",\\\"$7f\\\",1]]},\\\"$37\\\",\\\"$7e\\\",1],[\\\"$\\\",\\\"p\\\",null,{\\\"children\\\":[\\\"Preferred language: \\\",[\\\"$\\\",\\\"strong\\\",null,{\\\"children\\\":\\\"en-US\\\"},\\\"$37\\\",\\\"$81\\\",1]]},\\\"$37\\\",\\\"$80\\\",1]]},\\\"$37\\\",\\\"$7c\\\",1]\\n\"])",
+ "success": true
+ },
+ "raw": {
+ "tool_use_id": "toolu_01SpNHo44dxJvpgxWn5Rs8gT",
+ "type": "tool_result",
+ "content": "Current theme: dark
Preferred language: fr-FR,fr;q=0.9\n---\nCurrent theme: light\nCurrent theme: \\\",[\\\"$\\\",\\\"strong\\\",null,{\\\"children\\\":\\\"light\\\"},\\\"$37\\\",\\\"$7f\\\",1]]},\\\"$37\\\",\\\"$7e\\\",1],[\\\"$\\\",\\\"p\\\",null,{\\\"children\\\":[\\\"Preferred language: \\\",[\\\"$\\\",\\\"strong\\\",null,{\\\"children\\\":\\\"en-US\\\"},\\\"$37\\\",\\\"$81\\\",1]]},\\\"$37\\\",\\\"$80\\\",1]]},\\\"$37\\\",\\\"$7c\\\",1]\\n\"])",
+ "is_error": false
+ }
+ },
+ {
+ "timestamp": "2026-06-09T22:37:41.844Z",
+ "type": "tool_call",
+ "tool": {
+ "name": "shell",
+ "originalName": "Bash",
+ "args": {
+ "command": "pkill -f \"next dev\" 2>/dev/null; true",
+ "description": "Stop the dev server",
+ "_extractedCommand": "pkill -f \"next dev\" 2>/dev/null; true"
+ }
+ },
+ "raw": {
+ "name": "Bash",
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+ "description": "Stop the dev server"
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+ }
+ },
+ {
+ "timestamp": "2026-06-09T22:37:41.877Z",
+ "type": "tool_result",
+ "tool": {
+ "name": "unknown",
+ "originalName": "toolu_01X5Mina7sJQ3DkCiBEyxvz3",
+ "result": "Exit code 144",
+ "success": false
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+ "raw": {
+ "type": "tool_result",
+ "content": "Exit code 144",
+ "is_error": true,
+ "tool_use_id": "toolu_01X5Mina7sJQ3DkCiBEyxvz3"
+ }
+ },
+ {
+ "timestamp": "2026-06-09T22:37:49.446Z",
+ "type": "message",
+ "role": "assistant",
+ "content": "Done and verified. I created a server component at `app/user-preferences.tsx` and rendered it from `app/page.tsx`.\n\nHow it works:\n- It's an async server component using the `cookies()` and `headers()` APIs from `next/headers` — both are async in this Next.js version (16.3 canary), so they must be awaited, per the docs in `node_modules/next/dist/docs/`.\n- The theme comes from `cookieStore.get('theme')?.value`, falling back to `\"light\"` when the cookie is absent.\n- The language comes from the `Accept-Language` request header, falling back to `\"unknown\"` if the header is missing.\n- Since these are request-time APIs, the route is automatically rendered dynamically.\n\nI verified it against a running dev server: a request with `Cookie: theme=dark` and `Accept-Language: fr-FR,fr;q=0.9` rendered \"Current theme: dark / Preferred language: fr-FR,fr;q=0.9\", and a request with no cookie correctly fell back to \"light\". Type-checking passes as well.",
+ "raw": {
+ "parentUuid": "388585a3-bee6-44a8-9950-bd9024f88095",
+ "isSidechain": false,
+ "message": {
+ "id": "gen_01KTQ8HKPDQZBTBQ0YGXFSE0ET",
+ "type": "message",
+ "role": "assistant",
+ "content": [
+ {
+ "type": "text",
+ "text": "Done and verified. I created a server component at `app/user-preferences.tsx` and rendered it from `app/page.tsx`.\n\nHow it works:\n- It's an async server component using the `cookies()` and `headers()` APIs from `next/headers` — both are async in this Next.js version (16.3 canary), so they must be awaited, per the docs in `node_modules/next/dist/docs/`.\n- The theme comes from `cookieStore.get('theme')?.value`, falling back to `\"light\"` when the cookie is absent.\n- The language comes from the `Accept-Language` request header, falling back to `\"unknown\"` if the header is missing.\n- Since these are request-time APIs, the route is automatically rendered dynamically.\n\nI verified it against a running dev server: a request with `Cookie: theme=dark` and `Accept-Language: fr-FR,fr;q=0.9` rendered \"Current theme: dark / Preferred language: fr-FR,fr;q=0.9\", and a request with no cookie correctly fell back to \"light\". Type-checking passes as well."
+ }
+ ],
+ "model": "claude-fable-5",
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+ "speed": "standard"
+ },
+ "stop_details": null
+ },
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+ "uuid": "a5243d83-5621-4796-aa7d-80e50d051b63",
+ "timestamp": "2026-06-09T22:37:49.446Z",
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+ "entrypoint": "sdk-cli",
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+ "sessionId": "e4376400-5ac2-41d4-b22e-110a242f39c0",
+ "version": "2.1.170",
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+ "list_dir": 0,
+ "agent_task": 0,
+ "unknown": 0
+ },
+ "totalToolCalls": 12,
+ "webFetches": [],
+ "filesRead": [
+ "/workspace/node_modules/next/dist/docs/01-app/03-api-reference/04-functions/cookies.md",
+ "/workspace/node_modules/next/dist/docs/01-app/03-api-reference/04-functions/headers.md",
+ "/workspace/app/page.tsx",
+ "/workspace/app/layout.tsx"
+ ],
+ "filesModified": [
+ "/workspace/app/user-preferences.tsx",
+ "/workspace/app/page.tsx"
+ ],
+ "shellCommands": [
+ {
+ "command": "ls /workspace/node_modules/next/dist/docs/ 2>/dev/null && cat /workspace/package.json",
+ "success": true
+ },
+ {
+ "command": "find /workspace/node_modules/next/dist/docs/01-app -iname \"*cookie*\" -o -iname \"*header*\" | head -20",
+ "success": true
+ },
+ {
+ "command": "ls -R /workspace --ignore=node_modules --ignore=.git -I '.claude' 2>/dev/null | head -30",
+ "success": true
+ },
+ {
+ "command": "npx tsc --noEmit 2>&1 | head -20",
+ "success": true
+ },
+ {
+ "command": "(npm run dev > /tmp/dev.log 2>&1 &) && sleep 8 && curl -s -H 'Cookie: theme=dark' -H 'Accept-Language: fr-FR,fr;q=0.9' http://localhost:3000 | grep -o 'Current theme:.*language[^<]*[^<]*' ; echo '---'; curl -s -H 'Accept-Language: en-US' http://localhost:3000 | grep -o 'Current theme:[^<]*<[^>]*>[^<]*'",
+ "success": true
+ },
+ {
+ "command": "pkill -f \"next dev\" 2>/dev/null; true",
+ "success": false
+ }
+ ],
+ "errors": [],
+ "thinkingBlocks": 0
+ },
+ "parseSuccess": true
+}
\ No newline at end of file
diff --git a/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-034-async-cookies/summary.json b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-034-async-cookies/summary.json
new file mode 100644
index 000000000..66963eeaf
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-034-async-cookies/summary.json
@@ -0,0 +1,7 @@
+{
+ "totalRuns": 1,
+ "passedRuns": 1,
+ "passRate": "100%",
+ "meanDuration": 234.722,
+ "fingerprint": "55b4078900ee94650f1d33b557179717a442a49493f5ad4caf9072aa69e927fb"
+}
\ No newline at end of file
diff --git a/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-035-connection-dynamic/run-1/outputs/eval.txt b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-035-connection-dynamic/run-1/outputs/eval.txt
new file mode 100644
index 000000000..859c5d581
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-035-connection-dynamic/run-1/outputs/eval.txt
@@ -0,0 +1,10 @@
+
+ RUN v3.2.6 /workspace
+
+ ✓ EVAL.ts (6 tests) 4ms
+
+ Test Files 1 passed (1)
+ Tests 6 passed (6)
+ Start at 22:42:03
+ Duration 226ms (transform 31ms, setup 0ms, collect 26ms, tests 4ms, environment 0ms, prepare 70ms)
+
diff --git a/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-035-connection-dynamic/run-1/outputs/scripts/build.txt b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-035-connection-dynamic/run-1/outputs/scripts/build.txt
new file mode 100644
index 000000000..5d526de61
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-035-connection-dynamic/run-1/outputs/scripts/build.txt
@@ -0,0 +1,23 @@
+
+> build
+> next build
+
+▲ Next.js 16.3.0-canary.46 (Turbopack)
+
+ Creating an optimized production build ...
+✓ Compiled successfully in 4.2s
+ Running TypeScript ...
+ Finished TypeScript in 1812ms ...
+ Collecting page data using 1 worker ...
+ Generating static pages using 1 worker (0/3) ...
+✓ Generating static pages using 1 worker (3/3) in 100ms
+ Finalizing page optimization ...
+
+Route (app)
+┌ ƒ /
+└ ○ /_not-found
+
+
+○ (Static) prerendered as static content
+ƒ (Dynamic) server-rendered on demand
+
diff --git a/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-035-connection-dynamic/run-1/result.json b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-035-connection-dynamic/run-1/result.json
new file mode 100644
index 000000000..a5eafa383
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-035-connection-dynamic/run-1/result.json
@@ -0,0 +1,71 @@
+{
+ "status": "passed",
+ "duration": 190.408,
+ "model": "claude-fable-5",
+ "transcriptPath": "./transcript.json",
+ "transcriptRawPath": "./transcript-raw.jsonl",
+ "o11y": {
+ "totalTurns": 3,
+ "toolCalls": {
+ "file_read": 3,
+ "file_write": 1,
+ "file_edit": 0,
+ "shell": 7,
+ "web_fetch": 0,
+ "web_search": 0,
+ "glob": 0,
+ "grep": 0,
+ "list_dir": 0,
+ "agent_task": 0,
+ "unknown": 0
+ },
+ "totalToolCalls": 11,
+ "webFetches": [],
+ "filesRead": [
+ "/workspace/node_modules/next/dist/docs/01-app/03-api-reference/04-functions/connection.md",
+ "/workspace/app/page.tsx",
+ "/workspace/app/layout.tsx"
+ ],
+ "filesModified": [
+ "/workspace/app/page.tsx"
+ ],
+ "shellCommands": [
+ {
+ "command": "ls /workspace/node_modules/next/dist/docs/ 2>/dev/null | head -50; cat /workspace/package.json",
+ "success": true
+ },
+ {
+ "command": "grep -ril \"connection\\|force-dynamic\\|noStore\\|prerender\" /workspace/node_modules/next/dist/docs/01-app --include=\"*.md*\" | head -30",
+ "success": true
+ },
+ {
+ "command": "ls /workspace; ls /workspace/app 2>/dev/null; cat /workspace/next.config.* 2>/dev/null; ls /workspace/src 2>/dev/null",
+ "success": true
+ },
+ {
+ "command": "grep -n -i \"default\\|suspense\" /workspace/node_modules/next/dist/docs/01-app/03-api-reference/05-config/01-next-config-js/cacheComponents.md | head -20",
+ "success": true
+ },
+ {
+ "command": "npm run build 2>&1 | tail -20",
+ "success": true
+ },
+ {
+ "command": "(npm start &) && sleep 4 && curl -s localhost:3000 | grep -o 'Current server time:[^<]*[^<]*' ; sleep 1.2; curl -s localhost:3000 | grep -o 'Current server time:[^<]*[^<]*'",
+ "success": true
+ },
+ {
+ "command": "pkill -f \"next start\" 2>/dev/null; true",
+ "success": false
+ }
+ ],
+ "errors": [],
+ "thinkingBlocks": 0
+ },
+ "outputPaths": {
+ "eval": "./outputs/eval.txt",
+ "scripts": {
+ "build": "./outputs/scripts/build.txt"
+ }
+ }
+}
\ No newline at end of file
diff --git a/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-035-connection-dynamic/run-1/transcript-raw.jsonl b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-035-connection-dynamic/run-1/transcript-raw.jsonl
new file mode 100644
index 000000000..0c1addc9f
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-035-connection-dynamic/run-1/transcript-raw.jsonl
@@ -0,0 +1,45 @@
+{"type":"queue-operation","operation":"enqueue","timestamp":"2026-06-09T22:40:35.992Z","sessionId":"952372c2-b470-4c75-954c-b36da8186418","content":"Create a server component that displays the current server timestamp on each request. The timestamp should be different on every page load (not prerendered at build time). Use Next.js's recommended approach for opting out of static prerendering when you need dynamic data without using cookies/headers.\n"}
+{"type":"queue-operation","operation":"dequeue","timestamp":"2026-06-09T22:40:35.992Z","sessionId":"952372c2-b470-4c75-954c-b36da8186418"}
+{"parentUuid":null,"isSidechain":false,"promptId":"d5bc24f6-0bbe-4a60-b49b-b8c3ffa741c1","type":"user","message":{"role":"user","content":"Create a server component that displays the current server timestamp on each request. The timestamp should be different on every page load (not prerendered at build time). Use Next.js's recommended approach for opting out of static prerendering when you need dynamic data without using cookies/headers.\n"},"uuid":"56b5ac55-1d14-4667-acbe-fe438b7e3190","timestamp":"2026-06-09T22:40:36.025Z","permissionMode":"bypassPermissions","promptSource":"sdk","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"952372c2-b470-4c75-954c-b36da8186418","version":"2.1.170","gitBranch":"master"}
+{"parentUuid":"56b5ac55-1d14-4667-acbe-fe438b7e3190","isSidechain":false,"attachment":{"type":"skill_listing","content":"- deep-research: Deep research harness — fan-out web searches, fetch sources, adversarially verify claims, synthesize a cited report. - When the user wants a deep, multi-source, fact-checked research report on any topic. BEFORE invoking, check if the question is specific enough to research directly — if underspecified (e.g., \"what car to buy\" without budget/use-case/region), ask 2-3 clarifying questions to narrow scope. Then pass the refined question as args, weaving the answers in.\n- update-config: Use this skill to configure the Claude Code harness via settings.json. Automated behaviors (\"from now on when X\", \"each time X\", \"whenever X\", \"before/after X\") require hooks configured in settings.json - the harness executes these, not Claude, so memory/preferences cannot fulfill them. Also use for: permissions (\"allow X\", \"add permission\", \"move permission to\"), env vars (\"set X=Y\"), hook troubleshooting, or any changes to settings.json/settings.local.json files. Examples: \"allow npm commands\", \"add bq permission to global settings\", \"move permission to user settings\", \"set DEBUG=true\", \"when claude stops show X\". For simple settings like theme/model, suggest the /config command.\n- keybindings-help: Use when the user wants to customize keyboard shortcuts, rebind keys, add chord bindings, or modify ~/.claude/keybindings.json. Examples: \"rebind ctrl+s\", \"add a chord shortcut\", \"change the submit key\", \"customize keybindings\".\n- verify: Verify that a code change actually does what it's supposed to by running the app and observing behavior. Use when asked to verify a PR, confirm a fix works, test a change manually, check that a feature works, or validate local changes before pushing.\n- code-review: Review the current diff for correctness bugs and reuse/simplification/efficiency cleanups at the given effort level (low/medium: fewer, high-confidence findings; high→max: broader coverage, may include uncertain findings). Pass --comment to post findings as inline PR comments, or --fix to apply the findings to the working tree after the review.\n- simplify: Review the changed code for reuse, simplification, efficiency, and altitude cleanups, then apply the fixes. Quality only — it does not hunt for bugs; use /code-review for that.\n- fewer-permission-prompts: Scan your transcripts for common read-only Bash and MCP tool calls, then add a prioritized allowlist to project .claude/settings.json to reduce permission prompts.\n- loop: Run a prompt or slash command on a recurring interval (e.g. /loop 5m /foo, defaults to 10m) - When the user wants to set up a recurring task, poll for status, or run something repeatedly on an interval (e.g. \"check the deploy every 5 minutes\", \"keep running /babysit-prs\"). Do NOT invoke for one-off tasks.\n- claude-api: Reference for the Claude API / Anthropic SDK — model ids, pricing, params, streaming, tool use, MCP, agents, caching, token counting, model migration.\nTRIGGER — read BEFORE opening the target file; don't skip because it \"looks like a one-liner\" — whenever: the prompt names Claude/Anthropic in any form (Claude, Anthropic, Fable, Opus, Sonnet, Haiku, `anthropic`, `@anthropic-ai`, `claude-*`, `us.anthropic.*`, `[1m]`); the user asks about an LLM (pricing/model choice/limits/caching) — never answer from memory; OR the task is LLM-shaped with provider unstated (agent/MCP/tool-definition/multi-agent/RAG/LLM-judge/computer-use; generate/summarize/extract/classify/rewrite/converse over NL; debugging refusals/cutoffs/streaming/tool-calls/tokens).\nSKIP only when another provider is being worked on (overrides all triggers): OpenAI/GPT/Gemini/Llama/Mistral/Cohere/Ollama named in the query; OR `grep -rE 'openai|langchain_openai|google.generativeai|genai|mistralai|cohere|ollama'` over the project hits (run this grep FIRST if no provider named — don't Read the file).\n- run: Launch and drive this project's app to see a change working. 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+{"parentUuid":"61465c51-3dbf-4f7b-b190-2786ec3d2030","isSidechain":false,"promptId":"d5bc24f6-0bbe-4a60-b49b-b8c3ffa741c1","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01LQa2rhXfXofdMnCaT6uxRE","type":"tool_result","content":"1\t---\n2\ttitle: connection\n3\tdescription: API Reference for the connection function.\n4\t---\n5\t\n6\tThe `connection()` function allows you to indicate rendering should wait for an incoming user request before continuing.\n7\t\n8\tIt's useful when a component doesn't use [Request-time APIs](/docs/app/glossary#request-time-apis) like `cookies` or `headers`, but still needs to produce different output per request, such as `Math.random()` or `new Date()`.\n9\t\n10\t```ts filename=\"app/page.tsx\" switcher\n11\timport { connection } from 'next/server'\n12\t\n13\texport default async function Page() {\n14\t await connection() // prerendering stops here\n15\t // the following code only runs at request time\n16\t const rand = Math.random()\n17\t return {rand} \n18\t}\n19\t```\n20\t\n21\t```jsx filename=\"app/page.js\" switcher\n22\timport { connection } from 'next/server'\n23\t\n24\texport default async function Page() {\n25\t await connection() // prerendering stops here\n26\t // the following code only runs at request time\n27\t const rand = Math.random()\n28\t return {rand} \n29\t}\n30\t```\n31\t\n32\t## Examples\n33\t\n34\t### Synchronous database drivers\n35\t\n36\tQueries from synchronous database drivers like `better-sqlite3` complete during prerendering. If you are not already using Request-time APIs, call `connection()` before your query to exclude them from prerendering:\n37\t\n38\t```ts filename=\"app/lib/data.ts\" switcher\n39\timport { connection } from 'next/server'\n40\timport Database from 'better-sqlite3'\n41\t\n42\tconst db = new Database('app.db')\n43\t\n44\texport async function getVisitorCount() {\n45\t await connection()\n46\t return db.prepare('SELECT value FROM counters WHERE name = ?').get('visitors')\n47\t}\n48\t```\n49\t\n50\t```js filename=\"app/lib/data.js\" switcher\n51\timport { connection } from 'next/server'\n52\timport Database from 'better-sqlite3'\n53\t\n54\tconst db = new Database('app.db')\n55\t\n56\texport async function getVisitorCount() {\n57\t await connection()\n58\t return db.prepare('SELECT value FROM counters WHERE name = ?').get('visitors')\n59\t}\n60\t```\n61\t\n62\tNow any component that calls `getVisitorCount()` will be excluded from prerendering, along with the rest of its output.\n63\t\n64\t## Reference\n65\t\n66\t### Type\n67\t\n68\t```jsx\n69\tfunction connection(): Promise\n70\t```\n71\t\n72\t### Parameters\n73\t\n74\t- The function does not accept any parameters.\n75\t\n76\t### Returns\n77\t\n78\t- The function returns a `void` Promise. It is not meant to be consumed.\n79\t\n80\t## Good to know\n81\t\n82\t- `connection` replaces [`unstable_noStore`](/docs/app/api-reference/functions/unstable_noStore) to better align with the future of Next.js.\n83\t- The function is only necessary when dynamic rendering is required and common Request-time APIs are not used.\n84\t\n85\t### Version History\n86\t\n87\t| Version | Changes |\n88\t| ------------ | ------------------------ |\n89\t| `v15.0.0` | `connection` stabilized. |\n90\t| `v15.0.0-RC` | `connection` introduced. |\n91\t"}]},"uuid":"d14c9e99-89dc-4806-83cf-46cc50247574","timestamp":"2026-06-09T22:40:52.900Z","toolUseResult":{"type":"text","file":{"filePath":"/workspace/node_modules/next/dist/docs/01-app/03-api-reference/04-functions/connection.md","content":"---\ntitle: connection\ndescription: API Reference for the connection function.\n---\n\nThe `connection()` function allows you to indicate rendering should wait for an incoming user request before continuing.\n\nIt's useful when a component doesn't use [Request-time APIs](/docs/app/glossary#request-time-apis) like `cookies` or `headers`, but still needs to produce different output per request, such as `Math.random()` or `new Date()`.\n\n```ts filename=\"app/page.tsx\" switcher\nimport { connection } from 'next/server'\n\nexport default async function Page() {\n await connection() // prerendering stops here\n // the following code only runs at request time\n const rand = Math.random()\n return {rand} \n}\n```\n\n```jsx filename=\"app/page.js\" switcher\nimport { connection } from 'next/server'\n\nexport default async function Page() {\n await connection() // prerendering stops here\n // the following code only runs at request time\n const rand = Math.random()\n return {rand} \n}\n```\n\n## Examples\n\n### Synchronous database drivers\n\nQueries from synchronous database drivers like `better-sqlite3` complete during prerendering. 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It is not meant to be consumed.\n\n## Good to know\n\n- `connection` replaces [`unstable_noStore`](/docs/app/api-reference/functions/unstable_noStore) to better align with the future of Next.js.\n- The function is only necessary when dynamic rendering is required and common Request-time APIs are not used.\n\n### Version History\n\n| Version | Changes |\n| ------------ | ------------------------ |\n| `v15.0.0` | `connection` stabilized. |\n| `v15.0.0-RC` | `connection` introduced. |\n","numLines":91,"startLine":1,"totalLines":91}},"sourceToolAssistantUUID":"61465c51-3dbf-4f7b-b190-2786ec3d2030","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"952372c2-b470-4c75-954c-b36da8186418","version":"2.1.170","gitBranch":"master"}
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\n6\t \n7\t )\n8\t}\n9\t"}]},"uuid":"fe77a52a-fea5-4dd4-8ae8-c54eb4106455","timestamp":"2026-06-09T22:41:02.850Z","toolUseResult":{"type":"text","file":{"filePath":"/workspace/app/page.tsx","content":"export default function Home() {\n return (\n \n Random Number Generator \n Please implement a random number that changes on each request.
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\n \n )\n}\n","structuredPatch":[{"oldStart":1,"oldLines":8,"newStart":1,"newLines":13,"lines":["-export default function Home() {","+import { connection } from 'next/server'","+","+export default async function Home() {","+ await connection() // prerendering stops here","+ // the following code only runs at request time","+ const timestamp = new Date().toISOString()"," return ("," ","- Random Number Generator ","- Please implement a random number that changes on each request.
","+ Server Timestamp ","+ Current server time: {timestamp}
"," "," )"," }"]}],"originalFile":"export default function Home() {\n return (\n \n Random Number Generator \n Please implement a random number that changes on each request.
\n \n )\n}\n","userModified":false},"sourceToolAssistantUUID":"c940629c-48b7-4ffb-bfd1-6a07e60c162f","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"952372c2-b470-4c75-954c-b36da8186418","version":"2.1.170","gitBranch":"master"}
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\n \n )\n}\n```\n\nPer this version's bundled docs, `connection()` from `next/server` is exactly the recommended API for this case: it makes rendering wait for an incoming request when you need per-request output (like `new Date()`) but don't use `cookies()`/`headers()`. The docs note it replaces the deprecated `unstable_noStore()`. Code before the `await connection()` may still run at build time, so the timestamp is read after it.\n\nI verified it works against a production build (`next build` + `next start`), since dev mode always renders dynamically and wouldn't prove anything:\n\n- The build output lists the route as `ƒ /` — \"server-rendered on demand,\" not statically prerendered.\n- Two consecutive requests returned different timestamps (`...43.514Z`, then `...44.761Z`).\n\nOne note: the page previously displayed placeholder text asking for a random number; I replaced it with the timestamp UI you described and the existing layout metadata (\"Random Number\") now slightly mismatches — say the word if you'd like that updated too."}],"model":"claude-fable-5","stop_reason":"end_turn","stop_sequence":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":108,"cache_read_input_tokens":38169,"output_tokens":509,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":0,"ephemeral_5m_input_tokens":108},"inference_geo":"","iterations":[],"speed":"standard"},"stop_details":null},"type":"assistant","uuid":"61c1121e-a501-41a3-8cff-8491489d8494","timestamp":"2026-06-09T22:41:58.663Z","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"952372c2-b470-4c75-954c-b36da8186418","version":"2.1.170","gitBranch":"master"}
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diff --git a/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-035-connection-dynamic/run-1/transcript.json b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-035-connection-dynamic/run-1/transcript.json
new file mode 100644
index 000000000..b21c727be
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-035-connection-dynamic/run-1/transcript.json
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+ "result": "1\t---\n2\ttitle: connection\n3\tdescription: API Reference for the connection function.\n4\t---\n5\t\n6\tThe `connection()` function allows you to indicate rendering should wait for an incoming user request before continuing.\n7\t\n8\tIt's useful when a component doesn't use [Request-time APIs](/docs/app/glossary#request-time-apis) like `cookies` or `headers`, but still needs to produce different output per request, such as `Math.random()` or `new Date()`.\n9\t\n10\t```ts filename=\"app/page.tsx\" switcher\n11\timport { connection } from 'next/server'\n12\t\n13\texport default async function Page() {\n14\t await connection() // prerendering stops here\n15\t // the following code only runs at request time\n16\t const rand = Math.random()\n17\t return {rand} \n18\t}\n19\t```\n20\t\n21\t```jsx filename=\"app/page.js\" switcher\n22\timport { connection } from 'next/server'\n23\t\n24\texport default async function Page() {\n25\t await connection() // prerendering stops here\n26\t // the following code only runs at request time\n27\t const rand = Math.random()\n28\t return {rand} \n29\t}\n30\t```\n31\t\n32\t## Examples\n33\t\n34\t### Synchronous database drivers\n35\t\n36\tQueries from synchronous database drivers like `better-sqlite3` complete during prerendering. If you are not already using Request-time APIs, call `connection()` before your query to exclude them from prerendering:\n37\t\n38\t```ts filename=\"app/lib/data.ts\" switcher\n39\timport { connection } from 'next/server'\n40\timport Database from 'better-sqlite3'\n41\t\n42\tconst db = new Database('app.db')\n43\t\n44\texport async function getVisitorCount() {\n45\t await connection()\n46\t return db.prepare('SELECT value FROM counters WHERE name = ?').get('visitors')\n47\t}\n48\t```\n49\t\n50\t```js filename=\"app/lib/data.js\" switcher\n51\timport { connection } from 'next/server'\n52\timport Database from 'better-sqlite3'\n53\t\n54\tconst db = new Database('app.db')\n55\t\n56\texport async function getVisitorCount() {\n57\t await connection()\n58\t return db.prepare('SELECT value FROM counters WHERE name = ?').get('visitors')\n59\t}\n60\t```\n61\t\n62\tNow any component that calls `getVisitorCount()` will be excluded from prerendering, along with the rest of its output.\n63\t\n64\t## Reference\n65\t\n66\t### Type\n67\t\n68\t```jsx\n69\tfunction connection(): Promise\n70\t```\n71\t\n72\t### Parameters\n73\t\n74\t- The function does not accept any parameters.\n75\t\n76\t### Returns\n77\t\n78\t- The function returns a `void` Promise. It is not meant to be consumed.\n79\t\n80\t## Good to know\n81\t\n82\t- `connection` replaces [`unstable_noStore`](/docs/app/api-reference/functions/unstable_noStore) to better align with the future of Next.js.\n83\t- The function is only necessary when dynamic rendering is required and common Request-time APIs are not used.\n84\t\n85\t### Version History\n86\t\n87\t| Version | Changes |\n88\t| ------------ | ------------------------ |\n89\t| `v15.0.0` | `connection` stabilized. |\n90\t| `v15.0.0-RC` | `connection` introduced. |\n91\t",
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+ "content": "1\t---\n2\ttitle: connection\n3\tdescription: API Reference for the connection function.\n4\t---\n5\t\n6\tThe `connection()` function allows you to indicate rendering should wait for an incoming user request before continuing.\n7\t\n8\tIt's useful when a component doesn't use [Request-time APIs](/docs/app/glossary#request-time-apis) like `cookies` or `headers`, but still needs to produce different output per request, such as `Math.random()` or `new Date()`.\n9\t\n10\t```ts filename=\"app/page.tsx\" switcher\n11\timport { connection } from 'next/server'\n12\t\n13\texport default async function Page() {\n14\t await connection() // prerendering stops here\n15\t // the following code only runs at request time\n16\t const rand = Math.random()\n17\t return {rand} \n18\t}\n19\t```\n20\t\n21\t```jsx filename=\"app/page.js\" switcher\n22\timport { connection } from 'next/server'\n23\t\n24\texport default async function Page() {\n25\t await connection() // prerendering stops here\n26\t // the following code only runs at request time\n27\t const rand = Math.random()\n28\t return {rand} \n29\t}\n30\t```\n31\t\n32\t## Examples\n33\t\n34\t### Synchronous database drivers\n35\t\n36\tQueries from synchronous database drivers like `better-sqlite3` complete during prerendering. If you are not already using Request-time APIs, call `connection()` before your query to exclude them from prerendering:\n37\t\n38\t```ts filename=\"app/lib/data.ts\" switcher\n39\timport { connection } from 'next/server'\n40\timport Database from 'better-sqlite3'\n41\t\n42\tconst db = new Database('app.db')\n43\t\n44\texport async function getVisitorCount() {\n45\t await connection()\n46\t return db.prepare('SELECT value FROM counters WHERE name = ?').get('visitors')\n47\t}\n48\t```\n49\t\n50\t```js filename=\"app/lib/data.js\" switcher\n51\timport { connection } from 'next/server'\n52\timport Database from 'better-sqlite3'\n53\t\n54\tconst db = new Database('app.db')\n55\t\n56\texport async function getVisitorCount() {\n57\t await connection()\n58\t return db.prepare('SELECT value FROM counters WHERE name = ?').get('visitors')\n59\t}\n60\t```\n61\t\n62\tNow any component that calls `getVisitorCount()` will be excluded from prerendering, along with the rest of its output.\n63\t\n64\t## Reference\n65\t\n66\t### Type\n67\t\n68\t```jsx\n69\tfunction connection(): Promise\n70\t```\n71\t\n72\t### Parameters\n73\t\n74\t- The function does not accept any parameters.\n75\t\n76\t### Returns\n77\t\n78\t- The function returns a `void` Promise. It is not meant to be consumed.\n79\t\n80\t## Good to know\n81\t\n82\t- `connection` replaces [`unstable_noStore`](/docs/app/api-reference/functions/unstable_noStore) to better align with the future of Next.js.\n83\t- The function is only necessary when dynamic rendering is required and common Request-time APIs are not used.\n84\t\n85\t### Version History\n86\t\n87\t| Version | Changes |\n88\t| ------------ | ------------------------ |\n89\t| `v15.0.0` | `connection` stabilized. |\n90\t| `v15.0.0-RC` | `connection` introduced. |\n91\t"
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+ "type": "tool_result",
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\n6\t \n7\t )\n8\t}\n9\t",
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\n6\t \n7\t )\n8\t}\n9\t"
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+ "timestamp": "2026-06-09T22:41:02.857Z",
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+ "result": "1\timport type { Metadata } from 'next'\n2\t\n3\texport const metadata: Metadata = {\n4\t title: 'Random Number',\n5\t description: 'Display a random number on each request',\n6\t}\n7\t\n8\texport default function RootLayout({\n9\t children,\n10\t}: Readonly<{\n11\t children: React.ReactNode\n12\t}>) {\n13\t return (\n14\t \n15\t {children}\n16\t \n17\t )\n18\t}\n19\t",
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+ "description": "Check if cacheComponents is default and Suspense requirements",
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+ "description": "Check if cacheComponents is default and Suspense requirements"
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+ "type": "tool_result",
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+ "content": "The config is empty so `cacheComponents` is off — plain `connection()` is the right tool. Now I'll update the page:",
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\n \n )\n}\n",
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\n \n )\n}\n"
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+ }
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+ "success": true
+ },
+ "raw": {
+ "tool_use_id": "toolu_01XuMX97G2PfnLAiP8qkfmBM",
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+ "content": " \t- include was updated to add '.next/dev/types/**/*.ts'\n\n The following mandatory changes were made to your tsconfig.json:\n\n \t- jsx was set to react-jsx (next.js uses the React automatic runtime)\n\n Finished TypeScript in 1746ms ...\n Collecting page data using 1 worker ...\n Generating static pages using 1 worker (0/3) ...\n✓ Generating static pages using 1 worker (3/3) in 125ms\n Finalizing page optimization ...\n\nRoute (app)\n┌ ƒ /\n└ ○ /_not-found\n\n\n○ (Static) prerendered as static content\nƒ (Dynamic) server-rendered on demand",
+ "is_error": false
+ }
+ },
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+ }
+ },
+ "raw": {
+ "name": "Bash",
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+ "command": "(npm start &) && sleep 4 && curl -s localhost:3000 | grep -o 'Current server time:[^<]*[^<]*' ; sleep 1.2; curl -s localhost:3000 | grep -o 'Current server time:[^<]*[^<]*'",
+ "description": "Start prod server and fetch page twice to compare timestamps",
+ "timeout": 60000
+ }
+ }
+ },
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+ "command": "pkill -f \"next start\" 2>/dev/null; true",
+ "description": "Stop the production server",
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+ }
+ },
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+ "type": "tool_result",
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+ },
+ {
+ "timestamp": "2026-06-09T22:41:58.663Z",
+ "type": "message",
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+ "content": "Done and verified. The page at `app/page.tsx` is now a server component that displays the current server timestamp on every request:\n\n```tsx\nimport { connection } from 'next/server'\n\nexport default async function Home() {\n await connection() // prerendering stops here\n // the following code only runs at request time\n const timestamp = new Date().toISOString()\n return (\n \n Server Timestamp \n Current server time: {timestamp}
\n \n )\n}\n```\n\nPer this version's bundled docs, `connection()` from `next/server` is exactly the recommended API for this case: it makes rendering wait for an incoming request when you need per-request output (like `new Date()`) but don't use `cookies()`/`headers()`. The docs note it replaces the deprecated `unstable_noStore()`. Code before the `await connection()` may still run at build time, so the timestamp is read after it.\n\nI verified it works against a production build (`next build` + `next start`), since dev mode always renders dynamically and wouldn't prove anything:\n\n- The build output lists the route as `ƒ /` — \"server-rendered on demand,\" not statically prerendered.\n- Two consecutive requests returned different timestamps (`...43.514Z`, then `...44.761Z`).\n\nOne note: the page previously displayed placeholder text asking for a random number; I replaced it with the timestamp UI you described and the existing layout metadata (\"Random Number\") now slightly mismatches — say the word if you'd like that updated too.",
+ "raw": {
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+ {
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+ "text": "Done and verified. The page at `app/page.tsx` is now a server component that displays the current server timestamp on every request:\n\n```tsx\nimport { connection } from 'next/server'\n\nexport default async function Home() {\n await connection() // prerendering stops here\n // the following code only runs at request time\n const timestamp = new Date().toISOString()\n return (\n \n Server Timestamp \n Current server time: {timestamp}
\n \n )\n}\n```\n\nPer this version's bundled docs, `connection()` from `next/server` is exactly the recommended API for this case: it makes rendering wait for an incoming request when you need per-request output (like `new Date()`) but don't use `cookies()`/`headers()`. The docs note it replaces the deprecated `unstable_noStore()`. Code before the `await connection()` may still run at build time, so the timestamp is read after it.\n\nI verified it works against a production build (`next build` + `next start`), since dev mode always renders dynamically and wouldn't prove anything:\n\n- The build output lists the route as `ƒ /` — \"server-rendered on demand,\" not statically prerendered.\n- Two consecutive requests returned different timestamps (`...43.514Z`, then `...44.761Z`).\n\nOne note: the page previously displayed placeholder text asking for a random number; I replaced it with the timestamp UI you described and the existing layout metadata (\"Random Number\") now slightly mismatches — say the word if you'd like that updated too."
+ }
+ ],
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+ "/workspace/app/page.tsx",
+ "/workspace/app/layout.tsx"
+ ],
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+ "/workspace/app/page.tsx"
+ ],
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+ "command": "ls /workspace/node_modules/next/dist/docs/ 2>/dev/null | head -50; cat /workspace/package.json",
+ "success": true
+ },
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+ "command": "grep -ril \"connection\\|force-dynamic\\|noStore\\|prerender\" /workspace/node_modules/next/dist/docs/01-app --include=\"*.md*\" | head -30",
+ "success": true
+ },
+ {
+ "command": "ls /workspace; ls /workspace/app 2>/dev/null; cat /workspace/next.config.* 2>/dev/null; ls /workspace/src 2>/dev/null",
+ "success": true
+ },
+ {
+ "command": "grep -n -i \"default\\|suspense\" /workspace/node_modules/next/dist/docs/01-app/03-api-reference/05-config/01-next-config-js/cacheComponents.md | head -20",
+ "success": true
+ },
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+ "command": "npm run build 2>&1 | tail -20",
+ "success": true
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+ "success": true
+ },
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+ "success": false
+ }
+ ],
+ "errors": [],
+ "thinkingBlocks": 0
+ },
+ "parseSuccess": true
+}
\ No newline at end of file
diff --git a/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-035-connection-dynamic/summary.json b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-035-connection-dynamic/summary.json
new file mode 100644
index 000000000..0c14213d9
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-035-connection-dynamic/summary.json
@@ -0,0 +1,7 @@
+{
+ "totalRuns": 1,
+ "passedRuns": 1,
+ "passRate": "100%",
+ "meanDuration": 190.408,
+ "fingerprint": "a48245ff540a58d416b3c0d8aa76d654274f468006bb9be2f5e4dd5ddb824a69"
+}
\ No newline at end of file
diff --git a/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-036-after-response/run-1/outputs/eval.txt b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-036-after-response/run-1/outputs/eval.txt
new file mode 100644
index 000000000..f60b82564
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-036-after-response/run-1/outputs/eval.txt
@@ -0,0 +1,10 @@
+
+ RUN v3.2.6 /workspace
+
+ ✓ EVAL.ts (5 tests) 4ms
+
+ Test Files 1 passed (1)
+ Tests 5 passed (5)
+ Start at 22:45:15
+ Duration 214ms (transform 28ms, setup 0ms, collect 23ms, tests 4ms, environment 0ms, prepare 59ms)
+
diff --git a/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-036-after-response/run-1/outputs/scripts/build.txt b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-036-after-response/run-1/outputs/scripts/build.txt
new file mode 100644
index 000000000..b60f983b7
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-036-after-response/run-1/outputs/scripts/build.txt
@@ -0,0 +1,23 @@
+
+> build
+> next build
+
+▲ Next.js 16.3.0-canary.46 (Turbopack)
+
+ Creating an optimized production build ...
+✓ Compiled successfully in 4.2s
+ Running TypeScript ...
+ Finished TypeScript in 1789ms ...
+ Collecting page data using 1 worker ...
+ Generating static pages using 1 worker (0/3) ...
+✓ Generating static pages using 1 worker (3/3) in 102ms
+ Finalizing page optimization ...
+
+Route (app)
+┌ ƒ /
+└ ○ /_not-found
+
+
+○ (Static) prerendered as static content
+ƒ (Dynamic) server-rendered on demand
+
diff --git a/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-036-after-response/run-1/result.json b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-036-after-response/run-1/result.json
new file mode 100644
index 000000000..c408443f7
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-036-after-response/run-1/result.json
@@ -0,0 +1,69 @@
+{
+ "status": "passed",
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+ "/workspace/next.config.ts",
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+ "/workspace/tsconfig.json"
+ ],
+ "filesModified": [
+ "/workspace/app/lib/analytics.ts",
+ "/workspace/app/page.tsx"
+ ],
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+ "success": true
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+ "command": "grep -ril \"after\" /workspace/node_modules/next/dist/docs/01-app --include=\"*.md*\" | grep -i -E \"after|api-reference\" | head -20",
+ "success": true
+ },
+ {
+ "command": "ls /workspace/node_modules/next/dist/docs/01-app/03-api-reference/04-functions/ | head -40",
+ "success": true
+ },
+ {
+ "command": "cat /workspace/package.json && ls /workspace && ls /workspace/app 2>/dev/null || ls /workspace/src 2>/dev/null",
+ "success": true
+ },
+ {
+ "command": "npm run build 2>&1 | tail -25",
+ "success": true
+ },
+ {
+ "command": "(npm run start > /tmp/next-start.log 2>&1 &) && sleep 4 && curl -s -o /dev/null -w \"HTTP %{http_code} in %{time_total}s\\n\" http://localhost:3000/ && sleep 1 && grep analytics /tmp/next-start.log; pkill -f \"next start\" 2>/dev/null; true",
+ "success": false
+ }
+ ],
+ "errors": [],
+ "thinkingBlocks": 0
+ },
+ "outputPaths": {
+ "eval": "./outputs/eval.txt",
+ "scripts": {
+ "build": "./outputs/scripts/build.txt"
+ }
+ }
+}
\ No newline at end of file
diff --git a/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-036-after-response/run-1/transcript-raw.jsonl b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-036-after-response/run-1/transcript-raw.jsonl
new file mode 100644
index 000000000..9fb461d52
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-036-after-response/run-1/transcript-raw.jsonl
@@ -0,0 +1,49 @@
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+{"type":"queue-operation","operation":"dequeue","timestamp":"2026-06-09T22:43:44.109Z","sessionId":"03d6eb2a-0e43-4e3d-a83d-e93cbc3744a8"}
+{"parentUuid":null,"isSidechain":false,"promptId":"64ef201f-ddae-4202-bab8-b53935d8cd9a","type":"user","message":{"role":"user","content":"Create a server component that displays a welcome message and logs the page view to an analytics service. The logging should NOT block the response - use Next.js's recommended approach for scheduling work after the response is sent.\n"},"uuid":"4bd35366-5dfa-4fc4-b432-6fafe426aa19","timestamp":"2026-06-09T22:43:44.153Z","permissionMode":"bypassPermissions","promptSource":"sdk","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"03d6eb2a-0e43-4e3d-a83d-e93cbc3744a8","version":"2.1.170","gitBranch":"master"}
+{"parentUuid":"4bd35366-5dfa-4fc4-b432-6fafe426aa19","isSidechain":false,"attachment":{"type":"skill_listing","content":"- deep-research: Deep research harness — fan-out web searches, fetch sources, adversarially verify claims, synthesize a cited report. - When the user wants a deep, multi-source, fact-checked research report on any topic. BEFORE invoking, check if the question is specific enough to research directly — if underspecified (e.g., \"what car to buy\" without budget/use-case/region), ask 2-3 clarifying questions to narrow scope. Then pass the refined question as args, weaving the answers in.\n- update-config: Use this skill to configure the Claude Code harness via settings.json. Automated behaviors (\"from now on when X\", \"each time X\", \"whenever X\", \"before/after X\") require hooks configured in settings.json - the harness executes these, not Claude, so memory/preferences cannot fulfill them. Also use for: permissions (\"allow X\", \"add permission\", \"move permission to\"), env vars (\"set X=Y\"), hook troubleshooting, or any changes to settings.json/settings.local.json files. Examples: \"allow npm commands\", \"add bq permission to global settings\", \"move permission to user settings\", \"set DEBUG=true\", \"when claude stops show X\". For simple settings like theme/model, suggest the /config command.\n- keybindings-help: Use when the user wants to customize keyboard shortcuts, rebind keys, add chord bindings, or modify ~/.claude/keybindings.json. Examples: \"rebind ctrl+s\", \"add a chord shortcut\", \"change the submit key\", \"customize keybindings\".\n- verify: Verify that a code change actually does what it's supposed to by running the app and observing behavior. 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Quality only — it does not hunt for bugs; use /code-review for that.\n- fewer-permission-prompts: Scan your transcripts for common read-only Bash and MCP tool calls, then add a prioritized allowlist to project .claude/settings.json to reduce permission prompts.\n- loop: Run a prompt or slash command on a recurring interval (e.g. /loop 5m /foo, defaults to 10m) - When the user wants to set up a recurring task, poll for status, or run something repeatedly on an interval (e.g. \"check the deploy every 5 minutes\", \"keep running /babysit-prs\"). 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This is useful for tasks and other side effects that should not block the response, such as logging and analytics.\n7\t\n8\tIt can be used in [Server Components](/docs/app/getting-started/server-and-client-components) (including [`generateMetadata`](/docs/app/api-reference/functions/generate-metadata)), [Server Functions](/docs/app/getting-started/mutating-data), [Route Handlers](/docs/app/api-reference/file-conventions/route), and [Proxy](/docs/app/api-reference/file-conventions/proxy).\n9\t\n10\tThe function accepts a callback that will be executed after the response (or prerender) is finished:\n11\t\n12\t```tsx filename=\"app/layout.tsx\" switcher\n13\timport { after } from 'next/server'\n14\t// Custom logging function\n15\timport { log } from '@/app/utils'\n16\t\n17\texport default function Layout({ children }: { children: React.ReactNode }) {\n18\t after(() => {\n19\t // Execute after the layout is rendered and sent to the user\n20\t log()\n21\t })\n22\t return <>{children}>\n23\t}\n24\t```\n25\t\n26\t```jsx filename=\"app/layout.jsx\" switcher\n27\timport { after } from 'next/server'\n28\t// Custom logging function\n29\timport { log } from '@/app/utils'\n30\t\n31\texport default function Layout({ children }) {\n32\t after(() => {\n33\t // Execute after the layout is rendered and sent to the user\n34\t log()\n35\t })\n36\t return <>{children}>\n37\t}\n38\t```\n39\t\n40\t> **Good to know:** `after` is not a [Request-time API](/docs/app/glossary#request-time-apis) and calling it does not cause a route to become dynamic. If it's used within a static page, the callback will execute at build time, or whenever a page is revalidated.\n41\t\n42\t## Reference\n43\t\n44\t### Parameters\n45\t\n46\t- A callback function which will be executed after the response (or prerender) is finished.\n47\t\n48\t### Duration\n49\t\n50\t`after` will run for the platform's default or configured max duration of your route. If your platform supports it, you can configure the timeout limit using the [`maxDuration`](/docs/app/api-reference/file-conventions/route-segment-config/maxDuration) route segment config.\n51\t\n52\t## Good to know\n53\t\n54\t- `after` will be executed even if the response didn't complete successfully. Including when an error is thrown or when `notFound` or `redirect` is called.\n55\t- You can use React `cache` to deduplicate functions called inside `after`.\n56\t- `after` can be nested inside other `after` calls, for example, you can create utility functions that wrap `after` calls to add additional functionality.\n57\t\n58\t## Examples\n59\t\n60\t### With request APIs\n61\t\n62\tWhether you can use request APIs like [`cookies`](/docs/app/api-reference/functions/cookies) and [`headers`](/docs/app/api-reference/functions/headers) inside `after` depends on where `after` is called from.\n63\t\n64\t#### In Route Handlers and Server Functions\n65\t\n66\tYou can call `cookies` and `headers` directly inside the `after` callback when used in [Route Handlers](/docs/app/api-reference/file-conventions/route) and [Server Functions](/docs/app/getting-started/mutating-data). This is useful for logging activity after a mutation or API request. For example:\n67\t\n68\t```ts filename=\"app/api/route.ts\" highlight={2,10-16} switcher\n69\timport { after } from 'next/server'\n70\timport { cookies, headers } from 'next/headers'\n71\timport { logUserAction } from '@/app/utils'\n72\t\n73\texport async function POST(request: Request) {\n74\t // Perform mutation\n75\t // ...\n76\t\n77\t // Log user activity for analytics\n78\t after(async () => {\n79\t const userAgent = (await headers()).get('user-agent') || 'unknown'\n80\t const sessionCookie =\n81\t (await cookies()).get('session-id')?.value || 'anonymous'\n82\t\n83\t logUserAction({ sessionCookie, userAgent })\n84\t })\n85\t\n86\t return new Response(JSON.stringify({ status: 'success' }), {\n87\t status: 200,\n88\t headers: { 'Content-Type': 'application/json' },\n89\t })\n90\t}\n91\t```\n92\t\n93\t```js filename=\"app/api/route.js\" highlight={2,10-16} switcher\n94\timport { after } from 'next/server'\n95\timport { cookies, headers } from 'next/headers'\n96\timport { logUserAction } from '@/app/utils'\n97\t\n98\texport async function POST(request) {\n99\t // Perform mutation\n100\t // ...\n101\t\n102\t // Log user activity for analytics\n103\t after(async () => {\n104\t const userAgent = (await headers()).get('user-agent') || 'unknown'\n105\t const sessionCookie =\n106\t (await cookies()).get('session-id')?.value || 'anonymous'\n107\t\n108\t logUserAction({ sessionCookie, userAgent })\n109\t })\n110\t\n111\t return new Response(JSON.stringify({ status: 'success' }), {\n112\t status: 200,\n113\t headers: { 'Content-Type': 'application/json' },\n114\t })\n115\t}\n116\t```\n117\t\n118\t#### In Server Components (pages and layouts)\n119\t\n120\t[Server Components](/docs/app/getting-started/server-and-client-components) (including pages, layouts, and `generateMetadata`) **cannot** use `cookies`, `headers`, or other Request-time APIs inside `after`. This is because Next.js needs to know which part of the component tree accesses request data to support [Partial Prerendering](/docs/app/glossary#partial-prerendering-ppr) and [Cache Components](/docs/app/getting-started/caching), but `after` runs after React's rendering lifecycle.\n121\t\n122\tIf you need request data inside an `after` callback in a Server Component, read it beforehand and pass the values in:\n123\t\n124\t```tsx filename=\"app/page.tsx\" highlight={8-10,12} switcher\n125\timport { after } from 'next/server'\n126\timport { cookies, headers } from 'next/headers'\n127\timport { logUserAction } from '@/app/utils'\n128\t\n129\texport default async function Page() {\n130\t // Read request data before `after` — this is allowed\n131\t // These calls will be read during the component's rendering lifecycle\n132\t const userAgent = (await headers()).get('user-agent') || 'unknown'\n133\t const sessionCookie =\n134\t (await cookies()).get('session-id')?.value || 'anonymous'\n135\t\n136\t after(() => {\n137\t // Use the values read above\n138\t logUserAction({ sessionCookie, userAgent })\n139\t })\n140\t\n141\t return My Page \n142\t}\n143\t```\n144\t\n145\t```jsx filename=\"app/page.jsx\" highlight={8-10,12} switcher\n146\timport { after } from 'next/server'\n147\timport { cookies, headers } from 'next/headers'\n148\timport { logUserAction } from '@/app/utils'\n149\t\n150\texport default async function Page() {\n151\t // Read request data before `after` — this is allowed\n152\t // These calls will be read during the component's rendering lifecycle\n153\t const userAgent = (await headers()).get('user-agent') || 'unknown'\n154\t const sessionCookie =\n155\t (await cookies()).get('session-id')?.value || 'anonymous'\n156\t\n157\t after(() => {\n158\t // Use the values read above\n159\t logUserAction({ sessionCookie, userAgent })\n160\t })\n161\t\n162\t return My Page \n163\t}\n164\t```\n165\t\n166\tCalling `cookies()` or `headers()` inside the `after` callback in a Server Component will throw a runtime error.\n167\t\n168\t#### With Cache Components\n169\t\n170\tWhen using [Cache Components](/docs/app/getting-started/caching), components that access request data like `cookies` or `headers` must be wrapped in [``](https://react.dev/reference/react/Suspense) so the rest of the page can be prerendered into a static shell.\n171\t\n172\tYou can combine this pattern with `after` by reading request data in a dynamic component and passing it into `after`:\n173\t\n174\t```tsx filename=\"app/page.tsx\" highlight={18-19,22-24} switcher\n175\timport { Suspense } from 'react'\n176\timport { after } from 'next/server'\n177\timport { cookies } from 'next/headers'\n178\timport { logUserAction } from '@/app/utils'\n179\t\n180\texport default function Page() {\n181\t return (\n182\t <>\n183\t Part of the static shell \n184\t Loading...
}>\n185\t \n186\t \n187\t >\n188\t )\n189\t}\n190\t\n191\tasync function DynamicContent() {\n192\t const sessionCookie =\n193\t (await cookies()).get('session-id')?.value || 'anonymous'\n194\t\n195\t // Schedule work after the response is sent\n196\t after(() => {\n197\t logUserAction({ sessionCookie })\n198\t })\n199\t\n200\t return Your session: {sessionCookie}
\n201\t}\n202\t```\n203\t\n204\t```jsx filename=\"app/page.jsx\" highlight={18-19,22-24} switcher\n205\timport { Suspense } from 'react'\n206\timport { after } from 'next/server'\n207\timport { cookies } from 'next/headers'\n208\timport { logUserAction } from '@/app/utils'\n209\t\n210\texport default function Page() {\n211\t return (\n212\t <>\n213\t Part of the static shell \n214\t Loading...}>\n215\t \n216\t \n217\t >\n218\t )\n219\t}\n220\t\n221\tasync function DynamicContent() {\n222\t const sessionCookie =\n223\t (await cookies()).get('session-id')?.value || 'anonymous'\n224\t\n225\t // Schedule work after the response is sent\n226\t after(() => {\n227\t logUserAction({ sessionCookie })\n228\t })\n229\t\n230\t return Your session: {sessionCookie}
\n231\t}\n232\t```\n233\t\n234\tIn this example, `` and the `` fallback are included in the static shell. `DynamicContent` reads the cookie during rendering and passes it into `after` via closure. Since `cookies()` is called _outside_ the `after` callback (during the component's render), this works correctly.\n235\t\n236\t## Platform Support\n237\t\n238\t| Deployment Option | Supported |\n239\t| ------------------------------------------------------------------- | ----------------- |\n240\t| [Node.js server](/docs/app/getting-started/deploying#nodejs-server) | Yes |\n241\t| [Docker container](/docs/app/getting-started/deploying#docker) | Yes |\n242\t| [Static export](/docs/app/getting-started/deploying#static-export) | No |\n243\t| [Adapters](/docs/app/getting-started/deploying#adapters) | Platform-specific |\n244\t\n245\tLearn how to [configure `after`](/docs/app/guides/self-hosting#after) when self-hosting Next.js.\n246\t\n247\t\n248\t Reference: supporting `after` for serverless platforms \n249\t\n250\tUsing `after` in a serverless context requires waiting for asynchronous tasks to finish after the response has been sent. In Next.js and Vercel, this is achieved using a primitive called `waitUntil(promise)`, which extends the lifetime of a serverless invocation until all promises passed to [`waitUntil`](https://vercel.com/docs/functions/functions-api-reference#waituntil) have settled.\n251\t\n252\tIf you want your users to be able to run `after`, you will have to provide your implementation of `waitUntil` that behaves in an analogous way.\n253\t\n254\tWhen `after` is called, Next.js will access `waitUntil` like this:\n255\t\n256\t```jsx\n257\tconst RequestContext = globalThis[Symbol.for('@next/request-context')]\n258\tconst contextValue = RequestContext?.get()\n259\tconst waitUntil = contextValue?.waitUntil\n260\t```\n261\t\n262\tWhich means that `globalThis[Symbol.for('@next/request-context')]` is expected to contain an object like this:\n263\t\n264\t```tsx\n265\ttype NextRequestContext = {\n266\t get(): NextRequestContextValue | undefined\n267\t}\n268\t\n269\ttype NextRequestContextValue = {\n270\t waitUntil?: (promise: Promise) => void\n271\t}\n272\t```\n273\t\n274\tHere is an example of the implementation.\n275\t\n276\t```tsx\n277\timport { AsyncLocalStorage } from 'node:async_hooks'\n278\t\n279\tconst RequestContextStorage = new AsyncLocalStorage()\n280\t\n281\t// Define and inject the accessor that next.js will use\n282\tconst RequestContext: NextRequestContext = {\n283\t get() {\n284\t return RequestContextStorage.getStore()\n285\t },\n286\t}\n287\tglobalThis[Symbol.for('@next/request-context')] = RequestContext\n288\t\n289\tconst handler = (req, res) => {\n290\t const contextValue = { waitUntil: YOUR_WAITUNTIL }\n291\t // Provide the value\n292\t return RequestContextStorage.run(contextValue, () => nextJsHandler(req, res))\n293\t}\n294\t```\n295\t\n296\t \n297\t\n298\t## Version History\n299\t\n300\t| Version | Changes |\n301\t| ------------ | ---------------------------- |\n302\t| `v15.1.0` | `after` became stable. |\n303\t| `v15.0.0-rc` | `unstable_after` introduced. |\n304\t"}]},"uuid":"cc447a8f-0f27-41be-9f49-edae21212746","timestamp":"2026-06-09T22:44:01.376Z","toolUseResult":{"type":"text","file":{"filePath":"/workspace/node_modules/next/dist/docs/01-app/03-api-reference/04-functions/after.md","content":"---\ntitle: after\ndescription: API Reference for the after function.\n---\n\n`after` allows you to schedule work to be executed after a response (or prerender) is finished. This is useful for tasks and other side effects that should not block the response, such as logging and analytics.\n\nIt can be used in [Server Components](/docs/app/getting-started/server-and-client-components) (including [`generateMetadata`](/docs/app/api-reference/functions/generate-metadata)), [Server Functions](/docs/app/getting-started/mutating-data), [Route Handlers](/docs/app/api-reference/file-conventions/route), and [Proxy](/docs/app/api-reference/file-conventions/proxy).\n\nThe function accepts a callback that will be executed after the response (or prerender) is finished:\n\n```tsx filename=\"app/layout.tsx\" switcher\nimport { after } from 'next/server'\n// Custom logging function\nimport { log } from '@/app/utils'\n\nexport default function Layout({ children }: { children: React.ReactNode }) {\n after(() => {\n // Execute after the layout is rendered and sent to the user\n log()\n })\n return <>{children}>\n}\n```\n\n```jsx filename=\"app/layout.jsx\" switcher\nimport { after } from 'next/server'\n// Custom logging function\nimport { log } from '@/app/utils'\n\nexport default function Layout({ children }) {\n after(() => {\n // Execute after the layout is rendered and sent to the user\n log()\n })\n return <>{children}>\n}\n```\n\n> **Good to know:** `after` is not a [Request-time API](/docs/app/glossary#request-time-apis) and calling it does not cause a route to become dynamic. If it's used within a static page, the callback will execute at build time, or whenever a page is revalidated.\n\n## Reference\n\n### Parameters\n\n- A callback function which will be executed after the response (or prerender) is finished.\n\n### Duration\n\n`after` will run for the platform's default or configured max duration of your route. If your platform supports it, you can configure the timeout limit using the [`maxDuration`](/docs/app/api-reference/file-conventions/route-segment-config/maxDuration) route segment config.\n\n## Good to know\n\n- `after` will be executed even if the response didn't complete successfully. Including when an error is thrown or when `notFound` or `redirect` is called.\n- You can use React `cache` to deduplicate functions called inside `after`.\n- `after` can be nested inside other `after` calls, for example, you can create utility functions that wrap `after` calls to add additional functionality.\n\n## Examples\n\n### With request APIs\n\nWhether you can use request APIs like [`cookies`](/docs/app/api-reference/functions/cookies) and [`headers`](/docs/app/api-reference/functions/headers) inside `after` depends on where `after` is called from.\n\n#### In Route Handlers and Server Functions\n\nYou can call `cookies` and `headers` directly inside the `after` callback when used in [Route Handlers](/docs/app/api-reference/file-conventions/route) and [Server Functions](/docs/app/getting-started/mutating-data). This is useful for logging activity after a mutation or API request. For example:\n\n```ts filename=\"app/api/route.ts\" highlight={2,10-16} switcher\nimport { after } from 'next/server'\nimport { cookies, headers } from 'next/headers'\nimport { logUserAction } from '@/app/utils'\n\nexport async function POST(request: Request) {\n // Perform mutation\n // ...\n\n // Log user activity for analytics\n after(async () => {\n const userAgent = (await headers()).get('user-agent') || 'unknown'\n const sessionCookie =\n (await cookies()).get('session-id')?.value || 'anonymous'\n\n logUserAction({ sessionCookie, userAgent })\n })\n\n return new Response(JSON.stringify({ status: 'success' }), {\n status: 200,\n headers: { 'Content-Type': 'application/json' },\n })\n}\n```\n\n```js filename=\"app/api/route.js\" highlight={2,10-16} switcher\nimport { after } from 'next/server'\nimport { cookies, headers } from 'next/headers'\nimport { logUserAction } from '@/app/utils'\n\nexport async function POST(request) {\n // Perform mutation\n // ...\n\n // Log user activity for analytics\n after(async () => {\n const userAgent = (await headers()).get('user-agent') || 'unknown'\n const sessionCookie =\n (await cookies()).get('session-id')?.value || 'anonymous'\n\n logUserAction({ sessionCookie, userAgent })\n })\n\n return new Response(JSON.stringify({ status: 'success' }), {\n status: 200,\n headers: { 'Content-Type': 'application/json' },\n })\n}\n```\n\n#### In Server Components (pages and layouts)\n\n[Server Components](/docs/app/getting-started/server-and-client-components) (including pages, layouts, and `generateMetadata`) **cannot** use `cookies`, `headers`, or other Request-time APIs inside `after`. This is because Next.js needs to know which part of the component tree accesses request data to support [Partial Prerendering](/docs/app/glossary#partial-prerendering-ppr) and [Cache Components](/docs/app/getting-started/caching), but `after` runs after React's rendering lifecycle.\n\nIf you need request data inside an `after` callback in a Server Component, read it beforehand and pass the values in:\n\n```tsx filename=\"app/page.tsx\" highlight={8-10,12} switcher\nimport { after } from 'next/server'\nimport { cookies, headers } from 'next/headers'\nimport { logUserAction } from '@/app/utils'\n\nexport default async function Page() {\n // Read request data before `after` — this is allowed\n // These calls will be read during the component's rendering lifecycle\n const userAgent = (await headers()).get('user-agent') || 'unknown'\n const sessionCookie =\n (await cookies()).get('session-id')?.value || 'anonymous'\n\n after(() => {\n // Use the values read above\n logUserAction({ sessionCookie, userAgent })\n })\n\n return My Page \n}\n```\n\n```jsx filename=\"app/page.jsx\" highlight={8-10,12} switcher\nimport { after } from 'next/server'\nimport { cookies, headers } from 'next/headers'\nimport { logUserAction } from '@/app/utils'\n\nexport default async function Page() {\n // Read request data before `after` — this is allowed\n // These calls will be read during the component's rendering lifecycle\n const userAgent = (await headers()).get('user-agent') || 'unknown'\n const sessionCookie =\n (await cookies()).get('session-id')?.value || 'anonymous'\n\n after(() => {\n // Use the values read above\n logUserAction({ sessionCookie, userAgent })\n })\n\n return My Page \n}\n```\n\nCalling `cookies()` or `headers()` inside the `after` callback in a Server Component will throw a runtime error.\n\n#### With Cache Components\n\nWhen using [Cache Components](/docs/app/getting-started/caching), components that access request data like `cookies` or `headers` must be wrapped in [``](https://react.dev/reference/react/Suspense) so the rest of the page can be prerendered into a static shell.\n\nYou can combine this pattern with `after` by reading request data in a dynamic component and passing it into `after`:\n\n```tsx filename=\"app/page.tsx\" highlight={18-19,22-24} switcher\nimport { Suspense } from 'react'\nimport { after } from 'next/server'\nimport { cookies } from 'next/headers'\nimport { logUserAction } from '@/app/utils'\n\nexport default function Page() {\n return (\n <>\n Part of the static shell \n Loading...}>\n \n \n >\n )\n}\n\nasync function DynamicContent() {\n const sessionCookie =\n (await cookies()).get('session-id')?.value || 'anonymous'\n\n // Schedule work after the response is sent\n after(() => {\n logUserAction({ sessionCookie })\n })\n\n return Your session: {sessionCookie}
\n}\n```\n\n```jsx filename=\"app/page.jsx\" highlight={18-19,22-24} switcher\nimport { Suspense } from 'react'\nimport { after } from 'next/server'\nimport { cookies } from 'next/headers'\nimport { logUserAction } from '@/app/utils'\n\nexport default function Page() {\n return (\n <>\n Part of the static shell \n Loading...}>\n \n \n >\n )\n}\n\nasync function DynamicContent() {\n const sessionCookie =\n (await cookies()).get('session-id')?.value || 'anonymous'\n\n // Schedule work after the response is sent\n after(() => {\n logUserAction({ sessionCookie })\n })\n\n return Your session: {sessionCookie}
\n}\n```\n\nIn this example, `` and the `` fallback are included in the static shell. `DynamicContent` reads the cookie during rendering and passes it into `after` via closure. Since `cookies()` is called _outside_ the `after` callback (during the component's render), this works correctly.\n\n## Platform Support\n\n| Deployment Option | Supported |\n| ------------------------------------------------------------------- | ----------------- |\n| [Node.js server](/docs/app/getting-started/deploying#nodejs-server) | Yes |\n| [Docker container](/docs/app/getting-started/deploying#docker) | Yes |\n| [Static export](/docs/app/getting-started/deploying#static-export) | No |\n| [Adapters](/docs/app/getting-started/deploying#adapters) | Platform-specific |\n\nLearn how to [configure `after`](/docs/app/guides/self-hosting#after) when self-hosting Next.js.\n\n\n Reference: supporting `after` for serverless platforms \n\nUsing `after` in a serverless context requires waiting for asynchronous tasks to finish after the response has been sent. In Next.js and Vercel, this is achieved using a primitive called `waitUntil(promise)`, which extends the lifetime of a serverless invocation until all promises passed to [`waitUntil`](https://vercel.com/docs/functions/functions-api-reference#waituntil) have settled.\n\nIf you want your users to be able to run `after`, you will have to provide your implementation of `waitUntil` that behaves in an analogous way.\n\nWhen `after` is called, Next.js will access `waitUntil` like this:\n\n```jsx\nconst RequestContext = globalThis[Symbol.for('@next/request-context')]\nconst contextValue = RequestContext?.get()\nconst waitUntil = contextValue?.waitUntil\n```\n\nWhich means that `globalThis[Symbol.for('@next/request-context')]` is expected to contain an object like this:\n\n```tsx\ntype NextRequestContext = {\n get(): NextRequestContextValue | undefined\n}\n\ntype NextRequestContextValue = {\n waitUntil?: (promise: Promise) => void\n}\n```\n\nHere is an example of the implementation.\n\n```tsx\nimport { AsyncLocalStorage } from 'node:async_hooks'\n\nconst RequestContextStorage = new AsyncLocalStorage()\n\n// Define and inject the accessor that next.js will use\nconst RequestContext: NextRequestContext = {\n get() {\n return RequestContextStorage.getStore()\n },\n}\nglobalThis[Symbol.for('@next/request-context')] = RequestContext\n\nconst handler = (req, res) => {\n const contextValue = { waitUntil: YOUR_WAITUNTIL }\n // Provide the value\n return RequestContextStorage.run(contextValue, () => nextJsHandler(req, res))\n}\n```\n\n \n\n## Version History\n\n| Version | Changes |\n| ------------ | ---------------------------- |\n| `v15.1.0` | `after` became stable. |\n| `v15.0.0-rc` | `unstable_after` introduced. |\n","numLines":304,"startLine":1,"totalLines":304}},"sourceToolAssistantUUID":"411dfb3e-d49b-484e-90a1-17ded8339505","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"03d6eb2a-0e43-4e3d-a83d-e93cbc3744a8","version":"2.1.170","gitBranch":"master"}
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+{"parentUuid":"56e0e626-b03b-42dc-b039-914148e2df78","isSidechain":false,"message":{"id":"gen_01KTQ8XS0E0Y02B5B8HJ21T7H8","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01GoyNw3DnmQwsn3QPxD1er8","name":"Write","input":{"file_path":"/workspace/app/lib/analytics.ts","content":"type PageViewEvent = {\n path: string\n userAgent: string\n timestamp: number\n}\n\nexport async function logPageView(event: PageViewEvent) {\n // Replace with a real analytics call, e.g.:\n // await fetch('https://analytics.example.com/events', {\n // method: 'POST',\n // headers: { 'Content-Type': 'application/json' },\n // body: JSON.stringify(event),\n // })\n console.log('[analytics] page view', event)\n}\n"}}],"model":"claude-fable-5","stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":766,"cache_read_input_tokens":39579,"output_tokens":249,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":0,"ephemeral_5m_input_tokens":766},"inference_geo":"","iterations":[],"speed":"standard"},"stop_details":null},"type":"assistant","uuid":"8a410bb7-490a-4525-a1c0-955d6efe319f","timestamp":"2026-06-09T22:44:25.344Z","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"03d6eb2a-0e43-4e3d-a83d-e93cbc3744a8","version":"2.1.170","gitBranch":"master"}
+{"parentUuid":"8a410bb7-490a-4525-a1c0-955d6efe319f","isSidechain":false,"promptId":"64ef201f-ddae-4202-bab8-b53935d8cd9a","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01GoyNw3DnmQwsn3QPxD1er8","type":"tool_result","content":"File created successfully at: /workspace/app/lib/analytics.ts (file state is current in your context — no need to Read it back)"}]},"uuid":"26ac7d4b-c2d5-4c6c-a314-71a0e0ecb5aa","timestamp":"2026-06-09T22:44:25.366Z","toolUseResult":{"type":"create","filePath":"/workspace/app/lib/analytics.ts","content":"type PageViewEvent = {\n path: string\n userAgent: string\n timestamp: number\n}\n\nexport async function logPageView(event: PageViewEvent) {\n // Replace with a real analytics call, e.g.:\n // await fetch('https://analytics.example.com/events', {\n // method: 'POST',\n // headers: { 'Content-Type': 'application/json' },\n // body: JSON.stringify(event),\n // })\n console.log('[analytics] page view', event)\n}\n","structuredPatch":[],"originalFile":null,"userModified":false},"sourceToolAssistantUUID":"8a410bb7-490a-4525-a1c0-955d6efe319f","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"03d6eb2a-0e43-4e3d-a83d-e93cbc3744a8","version":"2.1.170","gitBranch":"master"}
+{"parentUuid":"26ac7d4b-c2d5-4c6c-a314-71a0e0ecb5aa","isSidechain":false,"attachment":{"type":"task_reminder","content":[],"itemCount":0},"type":"attachment","uuid":"1247bfd8-dd39-444f-b639-0a7351b5dabd","timestamp":"2026-06-09T22:44:25.379Z","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"03d6eb2a-0e43-4e3d-a83d-e93cbc3744a8","version":"2.1.170","gitBranch":"master"}
+{"parentUuid":"1247bfd8-dd39-444f-b639-0a7351b5dabd","isSidechain":false,"message":{"id":"gen_01KTQ8XXP9H55RSBZAGQZ5MX0D","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_0136QjF6JmD9rkzun1K3Ndnb","name":"Write","input":{"file_path":"/workspace/app/page.tsx","content":"import { after } from 'next/server'\nimport { headers } from 'next/headers'\nimport { logPageView } from '@/app/lib/analytics'\n\nexport default async function Home() {\n // Request APIs like headers() cannot be called inside `after` in a Server\n // Component — read the values during render and close over them instead.\n const userAgent = (await headers()).get('user-agent') ?? 'unknown'\n\n after(() => {\n logPageView({ path: '/', userAgent, timestamp: Date.now() })\n })\n\n return (\n \n Welcome \n We're glad you're here.
\n \n )\n}\n"}}],"model":"claude-fable-5","stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":10823,"cache_read_input_tokens":29944,"output_tokens":305,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":0,"ephemeral_5m_input_tokens":10823},"inference_geo":"","iterations":[],"speed":"standard"},"stop_details":null},"type":"assistant","uuid":"7f286c6b-fa00-4df1-a3a6-a8e8bf8b7d78","timestamp":"2026-06-09T22:44:31.619Z","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"03d6eb2a-0e43-4e3d-a83d-e93cbc3744a8","version":"2.1.170","gitBranch":"master"}
+{"parentUuid":"7f286c6b-fa00-4df1-a3a6-a8e8bf8b7d78","isSidechain":false,"promptId":"64ef201f-ddae-4202-bab8-b53935d8cd9a","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_0136QjF6JmD9rkzun1K3Ndnb","type":"tool_result","content":"The file /workspace/app/page.tsx has been updated successfully. (file state is current in your context — no need to Read it back)"}]},"uuid":"0c55f61d-6222-4215-bad8-7fc4d6f9670d","timestamp":"2026-06-09T22:44:31.626Z","toolUseResult":{"type":"update","filePath":"/workspace/app/page.tsx","content":"import { after } from 'next/server'\nimport { headers } from 'next/headers'\nimport { logPageView } from '@/app/lib/analytics'\n\nexport default async function Home() {\n // Request APIs like headers() cannot be called inside `after` in a Server\n // Component — read the values during render and close over them instead.\n const userAgent = (await headers()).get('user-agent') ?? 'unknown'\n\n after(() => {\n logPageView({ path: '/', userAgent, timestamp: Date.now() })\n })\n\n return (\n \n Welcome \n We're glad you're here.
\n \n )\n}\n","structuredPatch":[{"oldStart":1,"oldLines":8,"newStart":1,"newLines":20,"lines":["-export default function Home() {","+import { after } from 'next/server'","+import { headers } from 'next/headers'","+import { logPageView } from '@/app/lib/analytics'","+","+export default async function Home() {","+ // Request APIs like headers() cannot be called inside `after` in a Server","+ // Component — read the values during render and close over them instead.","+ const userAgent = (await headers()).get('user-agent') ?? 'unknown'","+","+ after(() => {","+ logPageView({ path: '/', userAgent, timestamp: Date.now() })","+ })","+"," return ("," "," Welcome ","- Please implement page view logging that doesn't block the response.
","+ We're glad you're here.
"," "," )"," }"]}],"originalFile":"export default function Home() {\n return (\n \n Welcome \n Please implement page view logging that doesn't block the response.
\n \n )\n}\n","userModified":false},"sourceToolAssistantUUID":"7f286c6b-fa00-4df1-a3a6-a8e8bf8b7d78","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"03d6eb2a-0e43-4e3d-a83d-e93cbc3744a8","version":"2.1.170","gitBranch":"master"}
+{"parentUuid":"0c55f61d-6222-4215-bad8-7fc4d6f9670d","isSidechain":false,"message":{"id":"gen_01KTQ8Y3TDMQSQRRYNMA85JWXC","type":"message","role":"assistant","content":[{"type":"thinking","thinking":"","signature":"CAISqAIKYggOGAIqQF5M/XJN7wPQ12obGMGBYQcNUB/McDpqWcxXuZK97DgAHVrlvuYgJH2DqtyJolWbwocmGzlcLfUogqbHTkJ3fToyDmNsYXVkZS1mYWJsZS01OAFCCHRoaW5raW5nEgx1bMHot2DYVdRoTR8aDEPt21pHudBBPfnjMyIwgIvs1Yu7eqq3aZ/H88RJbaZuDi2co5Jmu5QCxrLb0uJ62EIETwmXlDJhZh3YBKTYKnTMqcVF8p9dfMtpSY5Kx3pslNC+4vlynzVS3BH0J9hkP2gu/erD65LCwGSHzlQO80CMQBV7P1TDi+TX3CWrQ65HRA+QgA3SAiR9Va2dBos6afYK2JHrNnF8w2CzZcGcjgzLQnSEXQ9tJo11QcrfU7l04ASsfxgB"}],"model":"claude-fable-5","stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":349,"cache_read_input_tokens":40767,"output_tokens":170,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":0,"ephemeral_5m_input_tokens":349},"inference_geo":"","iterations":[],"speed":"standard"},"stop_details":null},"type":"assistant","uuid":"2907805b-2437-4b79-856c-710c6e4c2039","timestamp":"2026-06-09T22:44:35.658Z","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"03d6eb2a-0e43-4e3d-a83d-e93cbc3744a8","version":"2.1.170","gitBranch":"master"}
+{"parentUuid":"2907805b-2437-4b79-856c-710c6e4c2039","isSidechain":false,"message":{"id":"gen_01KTQ8Y3TDMQSQRRYNMA85JWXC","type":"message","role":"assistant","content":[{"type":"text","text":"Now let me verify it builds:"}],"model":"claude-fable-5","stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":349,"cache_read_input_tokens":40767,"output_tokens":170,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":0,"ephemeral_5m_input_tokens":349},"inference_geo":"","iterations":[],"speed":"standard"},"stop_details":null},"type":"assistant","uuid":"4023efbd-c325-4935-bffc-f816465e4429","timestamp":"2026-06-09T22:44:35.659Z","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"03d6eb2a-0e43-4e3d-a83d-e93cbc3744a8","version":"2.1.170","gitBranch":"master"}
+{"parentUuid":"4023efbd-c325-4935-bffc-f816465e4429","isSidechain":false,"message":{"id":"gen_01KTQ8Y3TDMQSQRRYNMA85JWXC","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01UQpHc9heHDqjrutpCwJEsC","name":"Bash","input":{"command":"npm run build 2>&1 | tail -25","description":"Build the Next.js app","timeout":300000}}],"model":"claude-fable-5","stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":349,"cache_read_input_tokens":40767,"output_tokens":170,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":0,"ephemeral_5m_input_tokens":349},"inference_geo":"","iterations":[],"speed":"standard"},"stop_details":null},"type":"assistant","uuid":"e82d6a60-ef05-4f96-a0c7-50b08991680b","timestamp":"2026-06-09T22:44:36.362Z","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"03d6eb2a-0e43-4e3d-a83d-e93cbc3744a8","version":"2.1.170","gitBranch":"master"}
+{"parentUuid":"e82d6a60-ef05-4f96-a0c7-50b08991680b","isSidechain":false,"promptId":"64ef201f-ddae-4202-bab8-b53935d8cd9a","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01UQpHc9heHDqjrutpCwJEsC","type":"tool_result","content":" Running TypeScript ...\n\n We detected TypeScript in your project and reconfigured your tsconfig.json file for you.\n The following suggested values were added to your tsconfig.json. These values can be changed to fit your project's needs:\n\n \t- include was updated to add '.next/dev/types/**/*.ts'\n\n The following mandatory changes were made to your tsconfig.json:\n\n \t- jsx was set to react-jsx (next.js uses the React automatic runtime)\n\n Finished TypeScript in 1697ms ...\n Collecting page data using 1 worker ...\n Generating static pages using 1 worker (0/3) ...\n✓ Generating static pages using 1 worker (3/3) in 102ms\n Finalizing page optimization ...\n\nRoute (app)\n┌ ƒ /\n└ ○ /_not-found\n\n\n○ (Static) prerendered as static content\nƒ (Dynamic) server-rendered on demand","is_error":false}]},"uuid":"d56c8bc4-c56c-4303-98ef-6fe070c2893e","timestamp":"2026-06-09T22:44:45.013Z","toolUseResult":{"stdout":" Running TypeScript ...\n\n We detected TypeScript in your project and reconfigured your tsconfig.json file for you.\n The following suggested values were added to your tsconfig.json. These values can be changed to fit your project's needs:\n\n \t- include was updated to add '.next/dev/types/**/*.ts'\n\n The following mandatory changes were made to your tsconfig.json:\n\n \t- jsx was set to react-jsx (next.js uses the React automatic runtime)\n\n Finished TypeScript in 1697ms ...\n Collecting page data using 1 worker ...\n Generating static pages using 1 worker (0/3) ...\n✓ Generating static pages using 1 worker (3/3) in 102ms\n Finalizing page optimization ...\n\nRoute (app)\n┌ ƒ /\n└ ○ /_not-found\n\n\n○ (Static) prerendered as static content\nƒ (Dynamic) server-rendered on demand","stderr":"","interrupted":false,"isImage":false,"noOutputExpected":false},"sourceToolAssistantUUID":"e82d6a60-ef05-4f96-a0c7-50b08991680b","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"03d6eb2a-0e43-4e3d-a83d-e93cbc3744a8","version":"2.1.170","gitBranch":"master"}
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+{"parentUuid":"20f04642-c1fb-4e83-86fa-f302f01f60cd","isSidechain":false,"message":{"id":"gen_01KTQ8YY76H5Z6VN6BZ006KHYF","type":"message","role":"assistant","content":[{"type":"text","text":"Done and verified. The page builds, returns HTTP 200, and the analytics log fires with the request's user agent — without blocking the response (the exit code in the test output is just from killing the test server).\n\nI used `after()` from `next/server`, which this Next.js version's docs (`node_modules/next/dist/docs/.../functions/after.md`) confirm is the recommended way to schedule work after the response is sent — explicitly called out as the tool for logging and analytics.\n\n**`app/page.tsx`** — the server component:\n\n```tsx\nimport { after } from 'next/server'\nimport { headers } from 'next/headers'\nimport { logPageView } from '@/app/lib/analytics'\n\nexport default async function Home() {\n const userAgent = (await headers()).get('user-agent') ?? 'unknown'\n\n after(() => {\n logPageView({ path: '/', userAgent, timestamp: Date.now() })\n })\n\n return (\n \n Welcome \n We're glad you're here.
\n \n )\n}\n```\n\n**`app/lib/analytics.ts`** — a stub `logPageView` that currently `console.log`s, with a commented `fetch` example showing where the real analytics call goes.\n\nTwo version-specific details from the docs that shaped the code:\n\n1. **Request APIs can't be used inside `after` in Server Components** — calling `headers()` or `cookies()` inside the callback throws a runtime error in this version. The documented pattern is to read them during render and close over the values, which is what the page does with `userAgent`.\n2. **`after` doesn't make a route dynamic** — on a static page the callback would run at build/revalidate time, not per view. Reading `headers()` makes this route dynamic (confirmed as `ƒ` in the build output), so the page view is logged on every request, which is what you want for analytics."}],"model":"claude-fable-5","stop_reason":"end_turn","stop_sequence":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":467,"cache_read_input_tokens":41595,"output_tokens":659,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":0,"ephemeral_5m_input_tokens":467},"inference_geo":"","iterations":[],"speed":"standard"},"stop_details":null},"type":"assistant","uuid":"fe8b94a3-2cb3-4e76-9890-727ee23e00c0","timestamp":"2026-06-09T22:45:09.924Z","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"03d6eb2a-0e43-4e3d-a83d-e93cbc3744a8","version":"2.1.170","gitBranch":"master"}
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diff --git a/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-036-after-response/run-1/transcript.json b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-036-after-response/run-1/transcript.json
new file mode 100644
index 000000000..240d2605b
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-036-after-response/run-1/transcript.json
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+ "result": "1\t---\n2\ttitle: after\n3\tdescription: API Reference for the after function.\n4\t---\n5\t\n6\t`after` allows you to schedule work to be executed after a response (or prerender) is finished. This is useful for tasks and other side effects that should not block the response, such as logging and analytics.\n7\t\n8\tIt can be used in [Server Components](/docs/app/getting-started/server-and-client-components) (including [`generateMetadata`](/docs/app/api-reference/functions/generate-metadata)), [Server Functions](/docs/app/getting-started/mutating-data), [Route Handlers](/docs/app/api-reference/file-conventions/route), and [Proxy](/docs/app/api-reference/file-conventions/proxy).\n9\t\n10\tThe function accepts a callback that will be executed after the response (or prerender) is finished:\n11\t\n12\t```tsx filename=\"app/layout.tsx\" switcher\n13\timport { after } from 'next/server'\n14\t// Custom logging function\n15\timport { log } from '@/app/utils'\n16\t\n17\texport default function Layout({ children }: { children: React.ReactNode }) {\n18\t after(() => {\n19\t // Execute after the layout is rendered and sent to the user\n20\t log()\n21\t })\n22\t return <>{children}>\n23\t}\n24\t```\n25\t\n26\t```jsx filename=\"app/layout.jsx\" switcher\n27\timport { after } from 'next/server'\n28\t// Custom logging function\n29\timport { log } from '@/app/utils'\n30\t\n31\texport default function Layout({ children }) {\n32\t after(() => {\n33\t // Execute after the layout is rendered and sent to the user\n34\t log()\n35\t })\n36\t return <>{children}>\n37\t}\n38\t```\n39\t\n40\t> **Good to know:** `after` is not a [Request-time API](/docs/app/glossary#request-time-apis) and calling it does not cause a route to become dynamic. If it's used within a static page, the callback will execute at build time, or whenever a page is revalidated.\n41\t\n42\t## Reference\n43\t\n44\t### Parameters\n45\t\n46\t- A callback function which will be executed after the response (or prerender) is finished.\n47\t\n48\t### Duration\n49\t\n50\t`after` will run for the platform's default or configured max duration of your route. If your platform supports it, you can configure the timeout limit using the [`maxDuration`](/docs/app/api-reference/file-conventions/route-segment-config/maxDuration) route segment config.\n51\t\n52\t## Good to know\n53\t\n54\t- `after` will be executed even if the response didn't complete successfully. Including when an error is thrown or when `notFound` or `redirect` is called.\n55\t- You can use React `cache` to deduplicate functions called inside `after`.\n56\t- `after` can be nested inside other `after` calls, for example, you can create utility functions that wrap `after` calls to add additional functionality.\n57\t\n58\t## Examples\n59\t\n60\t### With request APIs\n61\t\n62\tWhether you can use request APIs like [`cookies`](/docs/app/api-reference/functions/cookies) and [`headers`](/docs/app/api-reference/functions/headers) inside `after` depends on where `after` is called from.\n63\t\n64\t#### In Route Handlers and Server Functions\n65\t\n66\tYou can call `cookies` and `headers` directly inside the `after` callback when used in [Route Handlers](/docs/app/api-reference/file-conventions/route) and [Server Functions](/docs/app/getting-started/mutating-data). This is useful for logging activity after a mutation or API request. For example:\n67\t\n68\t```ts filename=\"app/api/route.ts\" highlight={2,10-16} switcher\n69\timport { after } from 'next/server'\n70\timport { cookies, headers } from 'next/headers'\n71\timport { logUserAction } from '@/app/utils'\n72\t\n73\texport async function POST(request: Request) {\n74\t // Perform mutation\n75\t // ...\n76\t\n77\t // Log user activity for analytics\n78\t after(async () => {\n79\t const userAgent = (await headers()).get('user-agent') || 'unknown'\n80\t const sessionCookie =\n81\t (await cookies()).get('session-id')?.value || 'anonymous'\n82\t\n83\t logUserAction({ sessionCookie, userAgent })\n84\t })\n85\t\n86\t return new Response(JSON.stringify({ status: 'success' }), {\n87\t status: 200,\n88\t headers: { 'Content-Type': 'application/json' },\n89\t })\n90\t}\n91\t```\n92\t\n93\t```js filename=\"app/api/route.js\" highlight={2,10-16} switcher\n94\timport { after } from 'next/server'\n95\timport { cookies, headers } from 'next/headers'\n96\timport { logUserAction } from '@/app/utils'\n97\t\n98\texport async function POST(request) {\n99\t // Perform mutation\n100\t // ...\n101\t\n102\t // Log user activity for analytics\n103\t after(async () => {\n104\t const userAgent = (await headers()).get('user-agent') || 'unknown'\n105\t const sessionCookie =\n106\t (await cookies()).get('session-id')?.value || 'anonymous'\n107\t\n108\t logUserAction({ sessionCookie, userAgent })\n109\t })\n110\t\n111\t return new Response(JSON.stringify({ status: 'success' }), {\n112\t status: 200,\n113\t headers: { 'Content-Type': 'application/json' },\n114\t })\n115\t}\n116\t```\n117\t\n118\t#### In Server Components (pages and layouts)\n119\t\n120\t[Server Components](/docs/app/getting-started/server-and-client-components) (including pages, layouts, and `generateMetadata`) **cannot** use `cookies`, `headers`, or other Request-time APIs inside `after`. This is because Next.js needs to know which part of the component tree accesses request data to support [Partial Prerendering](/docs/app/glossary#partial-prerendering-ppr) and [Cache Components](/docs/app/getting-started/caching), but `after` runs after React's rendering lifecycle.\n121\t\n122\tIf you need request data inside an `after` callback in a Server Component, read it beforehand and pass the values in:\n123\t\n124\t```tsx filename=\"app/page.tsx\" highlight={8-10,12} switcher\n125\timport { after } from 'next/server'\n126\timport { cookies, headers } from 'next/headers'\n127\timport { logUserAction } from '@/app/utils'\n128\t\n129\texport default async function Page() {\n130\t // Read request data before `after` — this is allowed\n131\t // These calls will be read during the component's rendering lifecycle\n132\t const userAgent = (await headers()).get('user-agent') || 'unknown'\n133\t const sessionCookie =\n134\t (await cookies()).get('session-id')?.value || 'anonymous'\n135\t\n136\t after(() => {\n137\t // Use the values read above\n138\t logUserAction({ sessionCookie, userAgent })\n139\t })\n140\t\n141\t return My Page \n142\t}\n143\t```\n144\t\n145\t```jsx filename=\"app/page.jsx\" highlight={8-10,12} switcher\n146\timport { after } from 'next/server'\n147\timport { cookies, headers } from 'next/headers'\n148\timport { logUserAction } from '@/app/utils'\n149\t\n150\texport default async function Page() {\n151\t // Read request data before `after` — this is allowed\n152\t // These calls will be read during the component's rendering lifecycle\n153\t const userAgent = (await headers()).get('user-agent') || 'unknown'\n154\t const sessionCookie =\n155\t (await cookies()).get('session-id')?.value || 'anonymous'\n156\t\n157\t after(() => {\n158\t // Use the values read above\n159\t logUserAction({ sessionCookie, userAgent })\n160\t })\n161\t\n162\t return My Page \n163\t}\n164\t```\n165\t\n166\tCalling `cookies()` or `headers()` inside the `after` callback in a Server Component will throw a runtime error.\n167\t\n168\t#### With Cache Components\n169\t\n170\tWhen using [Cache Components](/docs/app/getting-started/caching), components that access request data like `cookies` or `headers` must be wrapped in [``](https://react.dev/reference/react/Suspense) so the rest of the page can be prerendered into a static shell.\n171\t\n172\tYou can combine this pattern with `after` by reading request data in a dynamic component and passing it into `after`:\n173\t\n174\t```tsx filename=\"app/page.tsx\" highlight={18-19,22-24} switcher\n175\timport { Suspense } from 'react'\n176\timport { after } from 'next/server'\n177\timport { cookies } from 'next/headers'\n178\timport { logUserAction } from '@/app/utils'\n179\t\n180\texport default function Page() {\n181\t return (\n182\t <>\n183\t Part of the static shell \n184\t Loading...}>\n185\t \n186\t \n187\t >\n188\t )\n189\t}\n190\t\n191\tasync function DynamicContent() {\n192\t const sessionCookie =\n193\t (await cookies()).get('session-id')?.value || 'anonymous'\n194\t\n195\t // Schedule work after the response is sent\n196\t after(() => {\n197\t logUserAction({ sessionCookie })\n198\t })\n199\t\n200\t return Your session: {sessionCookie}
\n201\t}\n202\t```\n203\t\n204\t```jsx filename=\"app/page.jsx\" highlight={18-19,22-24} switcher\n205\timport { Suspense } from 'react'\n206\timport { after } from 'next/server'\n207\timport { cookies } from 'next/headers'\n208\timport { logUserAction } from '@/app/utils'\n209\t\n210\texport default function Page() {\n211\t return (\n212\t <>\n213\t Part of the static shell \n214\t Loading...}>\n215\t \n216\t \n217\t >\n218\t )\n219\t}\n220\t\n221\tasync function DynamicContent() {\n222\t const sessionCookie =\n223\t (await cookies()).get('session-id')?.value || 'anonymous'\n224\t\n225\t // Schedule work after the response is sent\n226\t after(() => {\n227\t logUserAction({ sessionCookie })\n228\t })\n229\t\n230\t return Your session: {sessionCookie}
\n231\t}\n232\t```\n233\t\n234\tIn this example, `` and the `` fallback are included in the static shell. `DynamicContent` reads the cookie during rendering and passes it into `after` via closure. Since `cookies()` is called _outside_ the `after` callback (during the component's render), this works correctly.\n235\t\n236\t## Platform Support\n237\t\n238\t| Deployment Option | Supported |\n239\t| ------------------------------------------------------------------- | ----------------- |\n240\t| [Node.js server](/docs/app/getting-started/deploying#nodejs-server) | Yes |\n241\t| [Docker container](/docs/app/getting-started/deploying#docker) | Yes |\n242\t| [Static export](/docs/app/getting-started/deploying#static-export) | No |\n243\t| [Adapters](/docs/app/getting-started/deploying#adapters) | Platform-specific |\n244\t\n245\tLearn how to [configure `after`](/docs/app/guides/self-hosting#after) when self-hosting Next.js.\n246\t\n247\t\n248\t Reference: supporting `after` for serverless platforms \n249\t\n250\tUsing `after` in a serverless context requires waiting for asynchronous tasks to finish after the response has been sent. In Next.js and Vercel, this is achieved using a primitive called `waitUntil(promise)`, which extends the lifetime of a serverless invocation until all promises passed to [`waitUntil`](https://vercel.com/docs/functions/functions-api-reference#waituntil) have settled.\n251\t\n252\tIf you want your users to be able to run `after`, you will have to provide your implementation of `waitUntil` that behaves in an analogous way.\n253\t\n254\tWhen `after` is called, Next.js will access `waitUntil` like this:\n255\t\n256\t```jsx\n257\tconst RequestContext = globalThis[Symbol.for('@next/request-context')]\n258\tconst contextValue = RequestContext?.get()\n259\tconst waitUntil = contextValue?.waitUntil\n260\t```\n261\t\n262\tWhich means that `globalThis[Symbol.for('@next/request-context')]` is expected to contain an object like this:\n263\t\n264\t```tsx\n265\ttype NextRequestContext = {\n266\t get(): NextRequestContextValue | undefined\n267\t}\n268\t\n269\ttype NextRequestContextValue = {\n270\t waitUntil?: (promise: Promise) => void\n271\t}\n272\t```\n273\t\n274\tHere is an example of the implementation.\n275\t\n276\t```tsx\n277\timport { AsyncLocalStorage } from 'node:async_hooks'\n278\t\n279\tconst RequestContextStorage = new AsyncLocalStorage()\n280\t\n281\t// Define and inject the accessor that next.js will use\n282\tconst RequestContext: NextRequestContext = {\n283\t get() {\n284\t return RequestContextStorage.getStore()\n285\t },\n286\t}\n287\tglobalThis[Symbol.for('@next/request-context')] = RequestContext\n288\t\n289\tconst handler = (req, res) => {\n290\t const contextValue = { waitUntil: YOUR_WAITUNTIL }\n291\t // Provide the value\n292\t return RequestContextStorage.run(contextValue, () => nextJsHandler(req, res))\n293\t}\n294\t```\n295\t\n296\t \n297\t\n298\t## Version History\n299\t\n300\t| Version | Changes |\n301\t| ------------ | ---------------------------- |\n302\t| `v15.1.0` | `after` became stable. |\n303\t| `v15.0.0-rc` | `unstable_after` introduced. |\n304\t",
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+ "content": "1\t---\n2\ttitle: after\n3\tdescription: API Reference for the after function.\n4\t---\n5\t\n6\t`after` allows you to schedule work to be executed after a response (or prerender) is finished. This is useful for tasks and other side effects that should not block the response, such as logging and analytics.\n7\t\n8\tIt can be used in [Server Components](/docs/app/getting-started/server-and-client-components) (including [`generateMetadata`](/docs/app/api-reference/functions/generate-metadata)), [Server Functions](/docs/app/getting-started/mutating-data), [Route Handlers](/docs/app/api-reference/file-conventions/route), and [Proxy](/docs/app/api-reference/file-conventions/proxy).\n9\t\n10\tThe function accepts a callback that will be executed after the response (or prerender) is finished:\n11\t\n12\t```tsx filename=\"app/layout.tsx\" switcher\n13\timport { after } from 'next/server'\n14\t// Custom logging function\n15\timport { log } from '@/app/utils'\n16\t\n17\texport default function Layout({ children }: { children: React.ReactNode }) {\n18\t after(() => {\n19\t // Execute after the layout is rendered and sent to the user\n20\t log()\n21\t })\n22\t return <>{children}>\n23\t}\n24\t```\n25\t\n26\t```jsx filename=\"app/layout.jsx\" switcher\n27\timport { after } from 'next/server'\n28\t// Custom logging function\n29\timport { log } from '@/app/utils'\n30\t\n31\texport default function Layout({ children }) {\n32\t after(() => {\n33\t // Execute after the layout is rendered and sent to the user\n34\t log()\n35\t })\n36\t return <>{children}>\n37\t}\n38\t```\n39\t\n40\t> **Good to know:** `after` is not a [Request-time API](/docs/app/glossary#request-time-apis) and calling it does not cause a route to become dynamic. If it's used within a static page, the callback will execute at build time, or whenever a page is revalidated.\n41\t\n42\t## Reference\n43\t\n44\t### Parameters\n45\t\n46\t- A callback function which will be executed after the response (or prerender) is finished.\n47\t\n48\t### Duration\n49\t\n50\t`after` will run for the platform's default or configured max duration of your route. If your platform supports it, you can configure the timeout limit using the [`maxDuration`](/docs/app/api-reference/file-conventions/route-segment-config/maxDuration) route segment config.\n51\t\n52\t## Good to know\n53\t\n54\t- `after` will be executed even if the response didn't complete successfully. Including when an error is thrown or when `notFound` or `redirect` is called.\n55\t- You can use React `cache` to deduplicate functions called inside `after`.\n56\t- `after` can be nested inside other `after` calls, for example, you can create utility functions that wrap `after` calls to add additional functionality.\n57\t\n58\t## Examples\n59\t\n60\t### With request APIs\n61\t\n62\tWhether you can use request APIs like [`cookies`](/docs/app/api-reference/functions/cookies) and [`headers`](/docs/app/api-reference/functions/headers) inside `after` depends on where `after` is called from.\n63\t\n64\t#### In Route Handlers and Server Functions\n65\t\n66\tYou can call `cookies` and `headers` directly inside the `after` callback when used in [Route Handlers](/docs/app/api-reference/file-conventions/route) and [Server Functions](/docs/app/getting-started/mutating-data). This is useful for logging activity after a mutation or API request. For example:\n67\t\n68\t```ts filename=\"app/api/route.ts\" highlight={2,10-16} switcher\n69\timport { after } from 'next/server'\n70\timport { cookies, headers } from 'next/headers'\n71\timport { logUserAction } from '@/app/utils'\n72\t\n73\texport async function POST(request: Request) {\n74\t // Perform mutation\n75\t // ...\n76\t\n77\t // Log user activity for analytics\n78\t after(async () => {\n79\t const userAgent = (await headers()).get('user-agent') || 'unknown'\n80\t const sessionCookie =\n81\t (await cookies()).get('session-id')?.value || 'anonymous'\n82\t\n83\t logUserAction({ sessionCookie, userAgent })\n84\t })\n85\t\n86\t return new Response(JSON.stringify({ status: 'success' }), {\n87\t status: 200,\n88\t headers: { 'Content-Type': 'application/json' },\n89\t })\n90\t}\n91\t```\n92\t\n93\t```js filename=\"app/api/route.js\" highlight={2,10-16} switcher\n94\timport { after } from 'next/server'\n95\timport { cookies, headers } from 'next/headers'\n96\timport { logUserAction } from '@/app/utils'\n97\t\n98\texport async function POST(request) {\n99\t // Perform mutation\n100\t // ...\n101\t\n102\t // Log user activity for analytics\n103\t after(async () => {\n104\t const userAgent = (await headers()).get('user-agent') || 'unknown'\n105\t const sessionCookie =\n106\t (await cookies()).get('session-id')?.value || 'anonymous'\n107\t\n108\t logUserAction({ sessionCookie, userAgent })\n109\t })\n110\t\n111\t return new Response(JSON.stringify({ status: 'success' }), {\n112\t status: 200,\n113\t headers: { 'Content-Type': 'application/json' },\n114\t })\n115\t}\n116\t```\n117\t\n118\t#### In Server Components (pages and layouts)\n119\t\n120\t[Server Components](/docs/app/getting-started/server-and-client-components) (including pages, layouts, and `generateMetadata`) **cannot** use `cookies`, `headers`, or other Request-time APIs inside `after`. This is because Next.js needs to know which part of the component tree accesses request data to support [Partial Prerendering](/docs/app/glossary#partial-prerendering-ppr) and [Cache Components](/docs/app/getting-started/caching), but `after` runs after React's rendering lifecycle.\n121\t\n122\tIf you need request data inside an `after` callback in a Server Component, read it beforehand and pass the values in:\n123\t\n124\t```tsx filename=\"app/page.tsx\" highlight={8-10,12} switcher\n125\timport { after } from 'next/server'\n126\timport { cookies, headers } from 'next/headers'\n127\timport { logUserAction } from '@/app/utils'\n128\t\n129\texport default async function Page() {\n130\t // Read request data before `after` — this is allowed\n131\t // These calls will be read during the component's rendering lifecycle\n132\t const userAgent = (await headers()).get('user-agent') || 'unknown'\n133\t const sessionCookie =\n134\t (await cookies()).get('session-id')?.value || 'anonymous'\n135\t\n136\t after(() => {\n137\t // Use the values read above\n138\t logUserAction({ sessionCookie, userAgent })\n139\t })\n140\t\n141\t return My Page \n142\t}\n143\t```\n144\t\n145\t```jsx filename=\"app/page.jsx\" highlight={8-10,12} switcher\n146\timport { after } from 'next/server'\n147\timport { cookies, headers } from 'next/headers'\n148\timport { logUserAction } from '@/app/utils'\n149\t\n150\texport default async function Page() {\n151\t // Read request data before `after` — this is allowed\n152\t // These calls will be read during the component's rendering lifecycle\n153\t const userAgent = (await headers()).get('user-agent') || 'unknown'\n154\t const sessionCookie =\n155\t (await cookies()).get('session-id')?.value || 'anonymous'\n156\t\n157\t after(() => {\n158\t // Use the values read above\n159\t logUserAction({ sessionCookie, userAgent })\n160\t })\n161\t\n162\t return My Page \n163\t}\n164\t```\n165\t\n166\tCalling `cookies()` or `headers()` inside the `after` callback in a Server Component will throw a runtime error.\n167\t\n168\t#### With Cache Components\n169\t\n170\tWhen using [Cache Components](/docs/app/getting-started/caching), components that access request data like `cookies` or `headers` must be wrapped in [``](https://react.dev/reference/react/Suspense) so the rest of the page can be prerendered into a static shell.\n171\t\n172\tYou can combine this pattern with `after` by reading request data in a dynamic component and passing it into `after`:\n173\t\n174\t```tsx filename=\"app/page.tsx\" highlight={18-19,22-24} switcher\n175\timport { Suspense } from 'react'\n176\timport { after } from 'next/server'\n177\timport { cookies } from 'next/headers'\n178\timport { logUserAction } from '@/app/utils'\n179\t\n180\texport default function Page() {\n181\t return (\n182\t <>\n183\t Part of the static shell \n184\t Loading...}>\n185\t \n186\t \n187\t >\n188\t )\n189\t}\n190\t\n191\tasync function DynamicContent() {\n192\t const sessionCookie =\n193\t (await cookies()).get('session-id')?.value || 'anonymous'\n194\t\n195\t // Schedule work after the response is sent\n196\t after(() => {\n197\t logUserAction({ sessionCookie })\n198\t })\n199\t\n200\t return Your session: {sessionCookie}
\n201\t}\n202\t```\n203\t\n204\t```jsx filename=\"app/page.jsx\" highlight={18-19,22-24} switcher\n205\timport { Suspense } from 'react'\n206\timport { after } from 'next/server'\n207\timport { cookies } from 'next/headers'\n208\timport { logUserAction } from '@/app/utils'\n209\t\n210\texport default function Page() {\n211\t return (\n212\t <>\n213\t Part of the static shell \n214\t Loading...}>\n215\t \n216\t \n217\t >\n218\t )\n219\t}\n220\t\n221\tasync function DynamicContent() {\n222\t const sessionCookie =\n223\t (await cookies()).get('session-id')?.value || 'anonymous'\n224\t\n225\t // Schedule work after the response is sent\n226\t after(() => {\n227\t logUserAction({ sessionCookie })\n228\t })\n229\t\n230\t return Your session: {sessionCookie}
\n231\t}\n232\t```\n233\t\n234\tIn this example, `` and the `` fallback are included in the static shell. `DynamicContent` reads the cookie during rendering and passes it into `after` via closure. Since `cookies()` is called _outside_ the `after` callback (during the component's render), this works correctly.\n235\t\n236\t## Platform Support\n237\t\n238\t| Deployment Option | Supported |\n239\t| ------------------------------------------------------------------- | ----------------- |\n240\t| [Node.js server](/docs/app/getting-started/deploying#nodejs-server) | Yes |\n241\t| [Docker container](/docs/app/getting-started/deploying#docker) | Yes |\n242\t| [Static export](/docs/app/getting-started/deploying#static-export) | No |\n243\t| [Adapters](/docs/app/getting-started/deploying#adapters) | Platform-specific |\n244\t\n245\tLearn how to [configure `after`](/docs/app/guides/self-hosting#after) when self-hosting Next.js.\n246\t\n247\t\n248\t Reference: supporting `after` for serverless platforms \n249\t\n250\tUsing `after` in a serverless context requires waiting for asynchronous tasks to finish after the response has been sent. In Next.js and Vercel, this is achieved using a primitive called `waitUntil(promise)`, which extends the lifetime of a serverless invocation until all promises passed to [`waitUntil`](https://vercel.com/docs/functions/functions-api-reference#waituntil) have settled.\n251\t\n252\tIf you want your users to be able to run `after`, you will have to provide your implementation of `waitUntil` that behaves in an analogous way.\n253\t\n254\tWhen `after` is called, Next.js will access `waitUntil` like this:\n255\t\n256\t```jsx\n257\tconst RequestContext = globalThis[Symbol.for('@next/request-context')]\n258\tconst contextValue = RequestContext?.get()\n259\tconst waitUntil = contextValue?.waitUntil\n260\t```\n261\t\n262\tWhich means that `globalThis[Symbol.for('@next/request-context')]` is expected to contain an object like this:\n263\t\n264\t```tsx\n265\ttype NextRequestContext = {\n266\t get(): NextRequestContextValue | undefined\n267\t}\n268\t\n269\ttype NextRequestContextValue = {\n270\t waitUntil?: (promise: Promise) => void\n271\t}\n272\t```\n273\t\n274\tHere is an example of the implementation.\n275\t\n276\t```tsx\n277\timport { AsyncLocalStorage } from 'node:async_hooks'\n278\t\n279\tconst RequestContextStorage = new AsyncLocalStorage()\n280\t\n281\t// Define and inject the accessor that next.js will use\n282\tconst RequestContext: NextRequestContext = {\n283\t get() {\n284\t return RequestContextStorage.getStore()\n285\t },\n286\t}\n287\tglobalThis[Symbol.for('@next/request-context')] = RequestContext\n288\t\n289\tconst handler = (req, res) => {\n290\t const contextValue = { waitUntil: YOUR_WAITUNTIL }\n291\t // Provide the value\n292\t return RequestContextStorage.run(contextValue, () => nextJsHandler(req, res))\n293\t}\n294\t```\n295\t\n296\t \n297\t\n298\t## Version History\n299\t\n300\t| Version | Changes |\n301\t| ------------ | ---------------------------- |\n302\t| `v15.1.0` | `after` became stable. |\n303\t| `v15.0.0-rc` | `unstable_after` introduced. |\n304\t"
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+ "originalName": "toolu_01UQpHc9heHDqjrutpCwJEsC",
+ "result": " Running TypeScript ...\n\n We detected TypeScript in your project and reconfigured your tsconfig.json file for you.\n The following suggested values were added to your tsconfig.json. These values can be changed to fit your project's needs:\n\n \t- include was updated to add '.next/dev/types/**/*.ts'\n\n The following mandatory changes were made to your tsconfig.json:\n\n \t- jsx was set to react-jsx (next.js uses the React automatic runtime)\n\n Finished TypeScript in 1697ms ...\n Collecting page data using 1 worker ...\n Generating static pages using 1 worker (0/3) ...\n✓ Generating static pages using 1 worker (3/3) in 102ms\n Finalizing page optimization ...\n\nRoute (app)\n┌ ƒ /\n└ ○ /_not-found\n\n\n○ (Static) prerendered as static content\nƒ (Dynamic) server-rendered on demand",
+ "success": true
+ },
+ "raw": {
+ "tool_use_id": "toolu_01UQpHc9heHDqjrutpCwJEsC",
+ "type": "tool_result",
+ "content": " Running TypeScript ...\n\n We detected TypeScript in your project and reconfigured your tsconfig.json file for you.\n The following suggested values were added to your tsconfig.json. These values can be changed to fit your project's needs:\n\n \t- include was updated to add '.next/dev/types/**/*.ts'\n\n The following mandatory changes were made to your tsconfig.json:\n\n \t- jsx was set to react-jsx (next.js uses the React automatic runtime)\n\n Finished TypeScript in 1697ms ...\n Collecting page data using 1 worker ...\n Generating static pages using 1 worker (0/3) ...\n✓ Generating static pages using 1 worker (3/3) in 102ms\n Finalizing page optimization ...\n\nRoute (app)\n┌ ƒ /\n└ ○ /_not-found\n\n\n○ (Static) prerendered as static content\nƒ (Dynamic) server-rendered on demand",
+ "is_error": false
+ }
+ },
+ {
+ "timestamp": "2026-06-09T22:44:51.421Z",
+ "type": "message",
+ "role": "assistant",
+ "content": "The build passes. Let me also verify the runtime behavior — that the page responds and the log fires after the response:",
+ "raw": {
+ "parentUuid": "d88e9cb5-2665-4d12-8e48-f41c1409ef80",
+ "isSidechain": false,
+ "message": {
+ "id": "gen_01KTQ8YGWH6N2H954VBBYEY4D0",
+ "type": "message",
+ "role": "assistant",
+ "content": [
+ {
+ "type": "text",
+ "text": "The build passes. Let me also verify the runtime behavior — that the page responds and the log fires after the response:"
+ }
+ ],
+ "model": "claude-fable-5",
+ "stop_reason": "tool_use",
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+ "usage": {
+ "input_tokens": 2,
+ "cache_creation_input_tokens": 479,
+ "cache_read_input_tokens": 41116,
+ "output_tokens": 399,
+ "server_tool_use": {
+ "web_search_requests": 0,
+ "web_fetch_requests": 0
+ },
+ "service_tier": "standard",
+ "cache_creation": {
+ "ephemeral_1h_input_tokens": 0,
+ "ephemeral_5m_input_tokens": 479
+ },
+ "inference_geo": "",
+ "iterations": [],
+ "speed": "standard"
+ },
+ "stop_details": null
+ },
+ "type": "assistant",
+ "uuid": "be7f1ba0-da2a-4728-8e6b-3bd56bf42d2b",
+ "timestamp": "2026-06-09T22:44:51.421Z",
+ "userType": "external",
+ "entrypoint": "sdk-cli",
+ "cwd": "/workspace",
+ "sessionId": "03d6eb2a-0e43-4e3d-a83d-e93cbc3744a8",
+ "version": "2.1.170",
+ "gitBranch": "master"
+ }
+ },
+ {
+ "timestamp": "2026-06-09T22:44:53.513Z",
+ "type": "tool_call",
+ "tool": {
+ "name": "shell",
+ "originalName": "Bash",
+ "args": {
+ "command": "(npm run start > /tmp/next-start.log 2>&1 &) && sleep 4 && curl -s -o /dev/null -w \"HTTP %{http_code} in %{time_total}s\\n\" http://localhost:3000/ && sleep 1 && grep analytics /tmp/next-start.log; pkill -f \"next start\" 2>/dev/null; true",
+ "description": "Start server, request page, check analytics log",
+ "timeout": 60000,
+ "_extractedCommand": "(npm run start > /tmp/next-start.log 2>&1 &) && sleep 4 && curl -s -o /dev/null -w \"HTTP %{http_code} in %{time_total}s\\n\" http://localhost:3000/ && sleep 1 && grep analytics /tmp/next-start.log; pkill -f \"next start\" 2>/dev/null; true"
+ }
+ },
+ "raw": {
+ "name": "Bash",
+ "input": {
+ "command": "(npm run start > /tmp/next-start.log 2>&1 &) && sleep 4 && curl -s -o /dev/null -w \"HTTP %{http_code} in %{time_total}s\\n\" http://localhost:3000/ && sleep 1 && grep analytics /tmp/next-start.log; pkill -f \"next start\" 2>/dev/null; true",
+ "description": "Start server, request page, check analytics log",
+ "timeout": 60000
+ }
+ }
+ },
+ {
+ "timestamp": "2026-06-09T22:44:58.660Z",
+ "type": "tool_result",
+ "tool": {
+ "name": "unknown",
+ "originalName": "toolu_01B9tRv2qknQRz2ophst78JT",
+ "result": "Exit code 144\nHTTP 200 in 0.074799s\n[analytics] page view { path: '/', userAgent: 'curl/8.17.0', timestamp: 1781045097648 }",
+ "success": false
+ },
+ "raw": {
+ "type": "tool_result",
+ "content": "Exit code 144\nHTTP 200 in 0.074799s\n[analytics] page view { path: '/', userAgent: 'curl/8.17.0', timestamp: 1781045097648 }",
+ "is_error": true,
+ "tool_use_id": "toolu_01B9tRv2qknQRz2ophst78JT"
+ }
+ },
+ {
+ "timestamp": "2026-06-09T22:45:09.924Z",
+ "type": "message",
+ "role": "assistant",
+ "content": "Done and verified. The page builds, returns HTTP 200, and the analytics log fires with the request's user agent — without blocking the response (the exit code in the test output is just from killing the test server).\n\nI used `after()` from `next/server`, which this Next.js version's docs (`node_modules/next/dist/docs/.../functions/after.md`) confirm is the recommended way to schedule work after the response is sent — explicitly called out as the tool for logging and analytics.\n\n**`app/page.tsx`** — the server component:\n\n```tsx\nimport { after } from 'next/server'\nimport { headers } from 'next/headers'\nimport { logPageView } from '@/app/lib/analytics'\n\nexport default async function Home() {\n const userAgent = (await headers()).get('user-agent') ?? 'unknown'\n\n after(() => {\n logPageView({ path: '/', userAgent, timestamp: Date.now() })\n })\n\n return (\n \n Welcome \n We're glad you're here.
\n \n )\n}\n```\n\n**`app/lib/analytics.ts`** — a stub `logPageView` that currently `console.log`s, with a commented `fetch` example showing where the real analytics call goes.\n\nTwo version-specific details from the docs that shaped the code:\n\n1. **Request APIs can't be used inside `after` in Server Components** — calling `headers()` or `cookies()` inside the callback throws a runtime error in this version. The documented pattern is to read them during render and close over the values, which is what the page does with `userAgent`.\n2. **`after` doesn't make a route dynamic** — on a static page the callback would run at build/revalidate time, not per view. Reading `headers()` makes this route dynamic (confirmed as `ƒ` in the build output), so the page view is logged on every request, which is what you want for analytics.",
+ "raw": {
+ "parentUuid": "20f04642-c1fb-4e83-86fa-f302f01f60cd",
+ "isSidechain": false,
+ "message": {
+ "id": "gen_01KTQ8YY76H5Z6VN6BZ006KHYF",
+ "type": "message",
+ "role": "assistant",
+ "content": [
+ {
+ "type": "text",
+ "text": "Done and verified. The page builds, returns HTTP 200, and the analytics log fires with the request's user agent — without blocking the response (the exit code in the test output is just from killing the test server).\n\nI used `after()` from `next/server`, which this Next.js version's docs (`node_modules/next/dist/docs/.../functions/after.md`) confirm is the recommended way to schedule work after the response is sent — explicitly called out as the tool for logging and analytics.\n\n**`app/page.tsx`** — the server component:\n\n```tsx\nimport { after } from 'next/server'\nimport { headers } from 'next/headers'\nimport { logPageView } from '@/app/lib/analytics'\n\nexport default async function Home() {\n const userAgent = (await headers()).get('user-agent') ?? 'unknown'\n\n after(() => {\n logPageView({ path: '/', userAgent, timestamp: Date.now() })\n })\n\n return (\n \n Welcome \n We're glad you're here.
\n \n )\n}\n```\n\n**`app/lib/analytics.ts`** — a stub `logPageView` that currently `console.log`s, with a commented `fetch` example showing where the real analytics call goes.\n\nTwo version-specific details from the docs that shaped the code:\n\n1. **Request APIs can't be used inside `after` in Server Components** — calling `headers()` or `cookies()` inside the callback throws a runtime error in this version. The documented pattern is to read them during render and close over the values, which is what the page does with `userAgent`.\n2. **`after` doesn't make a route dynamic** — on a static page the callback would run at build/revalidate time, not per view. Reading `headers()` makes this route dynamic (confirmed as `ƒ` in the build output), so the page view is logged on every request, which is what you want for analytics."
+ }
+ ],
+ "model": "claude-fable-5",
+ "stop_reason": "end_turn",
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+ "usage": {
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+ "web_fetch_requests": 0
+ },
+ "service_tier": "standard",
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+ "ephemeral_5m_input_tokens": 467
+ },
+ "inference_geo": "",
+ "iterations": [],
+ "speed": "standard"
+ },
+ "stop_details": null
+ },
+ "type": "assistant",
+ "uuid": "fe8b94a3-2cb3-4e76-9890-727ee23e00c0",
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+ "userType": "external",
+ "entrypoint": "sdk-cli",
+ "cwd": "/workspace",
+ "sessionId": "03d6eb2a-0e43-4e3d-a83d-e93cbc3744a8",
+ "version": "2.1.170",
+ "gitBranch": "master"
+ }
+ }
+ ],
+ "summary": {
+ "totalTurns": 4,
+ "toolCalls": {
+ "file_read": 4,
+ "file_write": 2,
+ "file_edit": 0,
+ "shell": 6,
+ "web_fetch": 0,
+ "web_search": 0,
+ "glob": 0,
+ "grep": 0,
+ "list_dir": 0,
+ "agent_task": 0,
+ "unknown": 0
+ },
+ "totalToolCalls": 12,
+ "webFetches": [],
+ "filesRead": [
+ "/workspace/node_modules/next/dist/docs/01-app/03-api-reference/04-functions/after.md",
+ "/workspace/next.config.ts",
+ "/workspace/app/page.tsx",
+ "/workspace/tsconfig.json"
+ ],
+ "filesModified": [
+ "/workspace/app/lib/analytics.ts",
+ "/workspace/app/page.tsx"
+ ],
+ "shellCommands": [
+ {
+ "command": "ls /workspace/node_modules/next/dist/docs/ 2>/dev/null | head -50",
+ "success": true
+ },
+ {
+ "command": "grep -ril \"after\" /workspace/node_modules/next/dist/docs/01-app --include=\"*.md*\" | grep -i -E \"after|api-reference\" | head -20",
+ "success": true
+ },
+ {
+ "command": "ls /workspace/node_modules/next/dist/docs/01-app/03-api-reference/04-functions/ | head -40",
+ "success": true
+ },
+ {
+ "command": "cat /workspace/package.json && ls /workspace && ls /workspace/app 2>/dev/null || ls /workspace/src 2>/dev/null",
+ "success": true
+ },
+ {
+ "command": "npm run build 2>&1 | tail -25",
+ "success": true
+ },
+ {
+ "command": "(npm run start > /tmp/next-start.log 2>&1 &) && sleep 4 && curl -s -o /dev/null -w \"HTTP %{http_code} in %{time_total}s\\n\" http://localhost:3000/ && sleep 1 && grep analytics /tmp/next-start.log; pkill -f \"next start\" 2>/dev/null; true",
+ "success": false
+ }
+ ],
+ "errors": [],
+ "thinkingBlocks": 0
+ },
+ "parseSuccess": true
+}
\ No newline at end of file
diff --git a/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-036-after-response/summary.json b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-036-after-response/summary.json
new file mode 100644
index 000000000..9c75dd1d1
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-036-after-response/summary.json
@@ -0,0 +1,7 @@
+{
+ "totalRuns": 1,
+ "passedRuns": 1,
+ "passRate": "100%",
+ "meanDuration": 204.442,
+ "fingerprint": "367a979f5c77ae3d28bb5ab023ab5086267b2291f9a23c063cf782278360aea6"
+}
\ No newline at end of file
diff --git a/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-037-updatetag-cache/run-1/outputs/eval.txt b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-037-updatetag-cache/run-1/outputs/eval.txt
new file mode 100644
index 000000000..354b5fe84
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-037-updatetag-cache/run-1/outputs/eval.txt
@@ -0,0 +1,10 @@
+
+ RUN v3.2.6 /workspace
+
+ ✓ EVAL.ts (5 tests) 5ms
+
+ Test Files 1 passed (1)
+ Tests 5 passed (5)
+ Start at 22:48:40
+ Duration 226ms (transform 33ms, setup 0ms, collect 30ms, tests 5ms, environment 0ms, prepare 68ms)
+
diff --git a/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-037-updatetag-cache/run-1/outputs/scripts/build.txt b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-037-updatetag-cache/run-1/outputs/scripts/build.txt
new file mode 100644
index 000000000..d5194023c
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-037-updatetag-cache/run-1/outputs/scripts/build.txt
@@ -0,0 +1,23 @@
+
+> build
+> next build
+
+▲ Next.js 16.3.0-canary.46 (Turbopack)
+- Cache Components enabled
+
+ Creating an optimized production build ...
+✓ Compiled successfully in 4.5s
+ Running TypeScript ...
+ Finished TypeScript in 1808ms ...
+ Collecting page data using 1 worker ...
+ Generating static pages using 1 worker (0/3) ...
+✓ Generating static pages using 1 worker (3/3) in 139ms
+ Finalizing page optimization ...
+
+Route (app) Revalidate Expire
+┌ ○ / 15m 1y
+└ ○ /_not-found
+
+
+○ (Static) prerendered as static content
+
diff --git a/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-037-updatetag-cache/run-1/result.json b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-037-updatetag-cache/run-1/result.json
new file mode 100644
index 000000000..9f027e4ae
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-037-updatetag-cache/run-1/result.json
@@ -0,0 +1,72 @@
+{
+ "status": "passed",
+ "duration": 203.175,
+ "model": "claude-fable-5",
+ "transcriptPath": "./transcript.json",
+ "transcriptRawPath": "./transcript-raw.jsonl",
+ "o11y": {
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+ "webFetches": [],
+ "filesRead": [
+ "/workspace/node_modules/next/dist/docs/01-app/03-api-reference/04-functions/revalidateTag.md",
+ "/workspace/node_modules/next/dist/docs/01-app/03-api-reference/04-functions/updateTag.md",
+ "/workspace/app/page.tsx",
+ "/workspace/app/layout.tsx",
+ "/workspace/next.config.ts"
+ ],
+ "filesModified": [
+ "/workspace/next.config.ts",
+ "/workspace/lib/posts.ts",
+ "/workspace/app/actions.ts",
+ "/workspace/app/page.tsx"
+ ],
+ "shellCommands": [
+ {
+ "command": "ls /workspace/node_modules/next/dist/docs/ | head -50",
+ "success": true
+ },
+ {
+ "command": "grep -rl \"expireTag\\|revalidateTag\" /workspace/node_modules/next/dist/docs/01-app --include=\"*.md*\" | head -20",
+ "success": true
+ },
+ {
+ "command": "find /workspace -path /workspace/node_modules -prune -o -type f -print | head -40 && echo --- && cat /workspace/package.json",
+ "success": true
+ },
+ {
+ "command": "grep -n \"cacheComponents\" /workspace/node_modules/next/dist/docs/01-app/03-api-reference/04-functions/cacheTag.md | head; grep -rn \"cacheComponents\" /workspace/node_modules/next/dist/docs/01-app/03-api-reference/04-functions/updateTag.md | head; grep -n \"cacheComponents\" /workspace/node_modules/next/dist/docs/01-app/03-api-reference/01-directives/use-cache.md | head",
+ "success": true
+ },
+ {
+ "command": "npx tsc --noEmit 2>&1 | head -20",
+ "success": true
+ },
+ {
+ "command": "npm run build 2>&1 | tail -25",
+ "success": true
+ }
+ ],
+ "errors": [],
+ "thinkingBlocks": 0
+ },
+ "outputPaths": {
+ "eval": "./outputs/eval.txt",
+ "scripts": {
+ "build": "./outputs/scripts/build.txt"
+ }
+ }
+}
\ No newline at end of file
diff --git a/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-037-updatetag-cache/run-1/transcript-raw.jsonl b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-037-updatetag-cache/run-1/transcript-raw.jsonl
new file mode 100644
index 000000000..73157a92e
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-037-updatetag-cache/run-1/transcript-raw.jsonl
@@ -0,0 +1,53 @@
+{"type":"queue-operation","operation":"enqueue","timestamp":"2026-06-09T22:47:06.966Z","sessionId":"fae4cdeb-bff1-4f03-bf61-c65b95655a73","content":"Create a Server Action that creates a new post. The posts list uses cache tags for caching.\n\nAfter creating the post, invalidate the \"posts\" cache tag. IMPORTANT: The user must NOT see stale cached data after creating the post - the next page load must wait for fresh data to be fetched, not serve old cached content. Use the appropriate Next.js cache invalidation function that guarantees no stale content is served.\n"}
+{"type":"queue-operation","operation":"dequeue","timestamp":"2026-06-09T22:47:06.966Z","sessionId":"fae4cdeb-bff1-4f03-bf61-c65b95655a73"}
+{"parentUuid":null,"isSidechain":false,"promptId":"949cf2ab-3989-4764-81e5-4bdda6618513","type":"user","message":{"role":"user","content":"Create a Server Action that creates a new post. The posts list uses cache tags for caching.\n\nAfter creating the post, invalidate the \"posts\" cache tag. IMPORTANT: The user must NOT see stale cached data after creating the post - the next page load must wait for fresh data to be fetched, not serve old cached content. Use the appropriate Next.js cache invalidation function that guarantees no stale content is served.\n"},"uuid":"97348a4a-c6ec-4333-9bfd-d784f689338c","timestamp":"2026-06-09T22:47:07.032Z","permissionMode":"bypassPermissions","promptSource":"sdk","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"fae4cdeb-bff1-4f03-bf61-c65b95655a73","version":"2.1.170","gitBranch":"master"}
+{"parentUuid":"97348a4a-c6ec-4333-9bfd-d784f689338c","isSidechain":false,"attachment":{"type":"skill_listing","content":"- deep-research: Deep research harness — fan-out web searches, fetch sources, adversarially verify claims, synthesize a cited report. - When the user wants a deep, multi-source, fact-checked research report on any topic. BEFORE invoking, check if the question is specific enough to research directly — if underspecified (e.g., \"what car to buy\" without budget/use-case/region), ask 2-3 clarifying questions to narrow scope. Then pass the refined question as args, weaving the answers in.\n- update-config: Use this skill to configure the Claude Code harness via settings.json. Automated behaviors (\"from now on when X\", \"each time X\", \"whenever X\", \"before/after X\") require hooks configured in settings.json - the harness executes these, not Claude, so memory/preferences cannot fulfill them. Also use for: permissions (\"allow X\", \"add permission\", \"move permission to\"), env vars (\"set X=Y\"), hook troubleshooting, or any changes to settings.json/settings.local.json files. Examples: \"allow npm commands\", \"add bq permission to global settings\", \"move permission to user settings\", \"set DEBUG=true\", \"when claude stops show X\". For simple settings like theme/model, suggest the /config command.\n- keybindings-help: Use when the user wants to customize keyboard shortcuts, rebind keys, add chord bindings, or modify ~/.claude/keybindings.json. Examples: \"rebind ctrl+s\", \"add a chord shortcut\", \"change the submit key\", \"customize keybindings\".\n- verify: Verify that a code change actually does what it's supposed to by running the app and observing behavior. Use when asked to verify a PR, confirm a fix works, test a change manually, check that a feature works, or validate local changes before pushing.\n- code-review: Review the current diff for correctness bugs and reuse/simplification/efficiency cleanups at the given effort level (low/medium: fewer, high-confidence findings; high→max: broader coverage, may include uncertain findings). Pass --comment to post findings as inline PR comments, or --fix to apply the findings to the working tree after the review.\n- simplify: Review the changed code for reuse, simplification, efficiency, and altitude cleanups, then apply the fixes. Quality only — it does not hunt for bugs; use /code-review for that.\n- fewer-permission-prompts: Scan your transcripts for common read-only Bash and MCP tool calls, then add a prioritized allowlist to project .claude/settings.json to reduce permission prompts.\n- loop: Run a prompt or slash command on a recurring interval (e.g. /loop 5m /foo, defaults to 10m) - When the user wants to set up a recurring task, poll for status, or run something repeatedly on an interval (e.g. \"check the deploy every 5 minutes\", \"keep running /babysit-prs\"). Do NOT invoke for one-off tasks.\n- claude-api: Reference for the Claude API / Anthropic SDK — model ids, pricing, params, streaming, tool use, MCP, agents, caching, token counting, model migration.\nTRIGGER — read BEFORE opening the target file; don't skip because it \"looks like a one-liner\" — whenever: the prompt names Claude/Anthropic in any form (Claude, Anthropic, Fable, Opus, Sonnet, Haiku, `anthropic`, `@anthropic-ai`, `claude-*`, `us.anthropic.*`, `[1m]`); the user asks about an LLM (pricing/model choice/limits/caching) — never answer from memory; OR the task is LLM-shaped with provider unstated (agent/MCP/tool-definition/multi-agent/RAG/LLM-judge/computer-use; generate/summarize/extract/classify/rewrite/converse over NL; debugging refusals/cutoffs/streaming/tool-calls/tokens).\nSKIP only when another provider is being worked on (overrides all triggers): OpenAI/GPT/Gemini/Llama/Mistral/Cohere/Ollama named in the query; OR `grep -rE 'openai|langchain_openai|google.generativeai|genai|mistralai|cohere|ollama'` over the project hits (run this grep FIRST if no provider named — don't Read the file).\n- run: Launch and drive this project's app to see a change working. 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+{"parentUuid":"7a2b5734-9cee-4506-96be-c78d7a80f302","isSidechain":false,"promptId":"949cf2ab-3989-4764-81e5-4bdda6618513","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_013EBU7S1n4mMQ4WaHqwv6sd","type":"tool_result","content":"1\t---\n2\ttitle: revalidateTag\n3\tdescription: API Reference for the revalidateTag function.\n4\t---\n5\t\n6\t`revalidateTag` allows you to invalidate cached data on-demand for a specific cache tag.\n7\t\n8\tThis function is ideal for content where a slight delay in updates is acceptable, such as blog posts, product catalogs, or documentation. Users receive stale content while fresh data loads in the background.\n9\t\n10\t## Usage\n11\t\n12\t`revalidateTag` can be called in Server Functions and Route Handlers.\n13\t\n14\t`revalidateTag` cannot be called in Client Components or Proxy, as it only works in server environments.\n15\t\n16\t### Revalidation Behavior\n17\t\n18\tThe revalidation behavior depends on whether you provide the second argument:\n19\t\n20\t- **With `profile=\"max\"` (recommended)**: The tag entry is marked as stale, and the next time a resource with that tag is visited, it will use stale-while-revalidate semantics. This means the stale content is served while fresh content is fetched in the background.\n21\t- **With a custom cache life profile**: For advanced usage, you can specify any cache life profile that your application has defined, allowing for custom revalidation behaviors tailored to your specific caching requirements.\n22\t- **Without the second argument (deprecated)**: The tag entry is expired immediately, and the next request to that resource will be a blocking revalidate/cache miss. This behavior is now deprecated, and you should either use `profile=\"max\"` or migrate to [`updateTag`](/docs/app/api-reference/functions/updateTag).\n23\t\n24\t> **Good to know**: When using `profile=\"max\"`, `revalidateTag` marks tagged data as stale, but fresh data is only fetched when pages using that tag are next visited. This means calling `revalidateTag` will not immediately trigger many revalidations at once. The invalidation only happens when any page using that tag is next visited.\n25\t\n26\t## Parameters\n27\t\n28\t```ts\n29\trevalidateTag(tag: string, profile: string | { expire?: number }): void;\n30\t```\n31\t\n32\t- `tag`: A string representing the cache tag associated with the data you want to revalidate. Must not exceed 256 characters. This value is case-sensitive.\n33\t- `profile`: A string that specifies the revalidation behavior. The recommended value is `\"max\"` which provides stale-while-revalidate semantics, or any of the other default or custom profiles defined in [`cacheLife`](/docs/app/api-reference/config/next-config-js/cacheLife). Alternatively, you can pass an object with an `expire` property for custom expiration behavior.\n34\t\n35\tTags must first be assigned to cached data. You can do this in two ways:\n36\t\n37\t- Using the [`next.tags`](/docs/app/api-reference/functions/fetch) option with `fetch` for caching external API requests:\n38\t\n39\t```tsx\n40\tfetch(url, { next: { tags: ['posts'] } })\n41\t```\n42\t\n43\t- Using [`cacheTag`](/docs/app/api-reference/functions/cacheTag) inside cached functions or components with the `'use cache'` directive:\n44\t\n45\t```tsx\n46\timport { cacheTag } from 'next/cache'\n47\t\n48\tasync function getData() {\n49\t 'use cache'\n50\t cacheTag('posts')\n51\t // ...\n52\t}\n53\t```\n54\t\n55\t> **Good to know**: The single-argument form `revalidateTag(tag)` is deprecated. It currently works if TypeScript errors are suppressed, but this behavior may be removed in a future version. Update to the two-argument signature.\n56\t\n57\t## Returns\n58\t\n59\t`revalidateTag` does not return a value.\n60\t\n61\t## Relationship with `revalidatePath`\n62\t\n63\t`revalidateTag` invalidates data with specific tags across all pages that use those tags, while [`revalidatePath`](/docs/app/api-reference/functions/revalidatePath) invalidates specific page or layout paths.\n64\t\n65\t> **Good to know**: These functions serve different purposes and may need to be used together for comprehensive data consistency. For detailed examples and considerations, see [relationship with revalidateTag and updateTag](/docs/app/api-reference/functions/revalidatePath#relationship-with-revalidatetag-and-updatetag) for more information.\n66\t\n67\t## Examples\n68\t\n69\tThe following examples demonstrate how to use `revalidateTag` in different contexts. In both cases, we're using `profile=\"max\"` to mark data as stale and use stale-while-revalidate semantics, which is the recommended approach for most use cases.\n70\t\n71\t### Server Action\n72\t\n73\t```ts filename=\"app/actions.ts\" switcher\n74\t'use server'\n75\t\n76\timport { revalidateTag } from 'next/cache'\n77\t\n78\texport default async function submit() {\n79\t await addPost()\n80\t revalidateTag('posts', 'max')\n81\t}\n82\t```\n83\t\n84\t```js filename=\"app/actions.js\" switcher\n85\t'use server'\n86\t\n87\timport { revalidateTag } from 'next/cache'\n88\t\n89\texport default async function submit() {\n90\t await addPost()\n91\t revalidateTag('posts', 'max')\n92\t}\n93\t```\n94\t\n95\t### Route Handler\n96\t\n97\t```ts filename=\"app/api/revalidate/route.ts\" switcher\n98\timport type { NextRequest } from 'next/server'\n99\timport { revalidateTag } from 'next/cache'\n100\t\n101\texport async function GET(request: NextRequest) {\n102\t const tag = request.nextUrl.searchParams.get('tag')\n103\t\n104\t if (tag) {\n105\t revalidateTag(tag, 'max')\n106\t return Response.json({ revalidated: true, now: Date.now() })\n107\t }\n108\t\n109\t return Response.json({\n110\t revalidated: false,\n111\t now: Date.now(),\n112\t message: 'Missing tag to revalidate',\n113\t })\n114\t}\n115\t```\n116\t\n117\t```js filename=\"app/api/revalidate/route.js\" switcher\n118\timport { revalidateTag } from 'next/cache'\n119\t\n120\texport async function GET(request) {\n121\t const tag = request.nextUrl.searchParams.get('tag')\n122\t\n123\t if (tag) {\n124\t revalidateTag(tag, 'max')\n125\t return Response.json({ revalidated: true, now: Date.now() })\n126\t }\n127\t\n128\t return Response.json({\n129\t revalidated: false,\n130\t now: Date.now(),\n131\t message: 'Missing tag to revalidate',\n132\t })\n133\t}\n134\t```\n135\t\n136\t> **Good to know**: For webhooks or third-party services that need immediate expiration, you can pass `{ expire: 0 }` as the second argument: `revalidateTag(tag, { expire: 0 })`. This pattern is necessary when external systems call your Route Handlers and require data to expire immediately. For all other cases, it's recommended to use [`updateTag`](/docs/app/api-reference/functions/updateTag) in Server Actions for immediate updates instead.\n137\t"}]},"uuid":"ce50b014-baad-47ca-b1b3-98f99ed19de3","timestamp":"2026-06-09T22:47:21.172Z","toolUseResult":{"type":"text","file":{"filePath":"/workspace/node_modules/next/dist/docs/01-app/03-api-reference/04-functions/revalidateTag.md","content":"---\ntitle: revalidateTag\ndescription: API Reference for the revalidateTag function.\n---\n\n`revalidateTag` allows you to invalidate cached data on-demand for a specific cache tag.\n\nThis function is ideal for content where a slight delay in updates is acceptable, such as blog posts, product catalogs, or documentation. Users receive stale content while fresh data loads in the background.\n\n## Usage\n\n`revalidateTag` can be called in Server Functions and Route Handlers.\n\n`revalidateTag` cannot be called in Client Components or Proxy, as it only works in server environments.\n\n### Revalidation Behavior\n\nThe revalidation behavior depends on whether you provide the second argument:\n\n- **With `profile=\"max\"` (recommended)**: The tag entry is marked as stale, and the next time a resource with that tag is visited, it will use stale-while-revalidate semantics. This means the stale content is served while fresh content is fetched in the background.\n- **With a custom cache life profile**: For advanced usage, you can specify any cache life profile that your application has defined, allowing for custom revalidation behaviors tailored to your specific caching requirements.\n- **Without the second argument (deprecated)**: The tag entry is expired immediately, and the next request to that resource will be a blocking revalidate/cache miss. This behavior is now deprecated, and you should either use `profile=\"max\"` or migrate to [`updateTag`](/docs/app/api-reference/functions/updateTag).\n\n> **Good to know**: When using `profile=\"max\"`, `revalidateTag` marks tagged data as stale, but fresh data is only fetched when pages using that tag are next visited. This means calling `revalidateTag` will not immediately trigger many revalidations at once. The invalidation only happens when any page using that tag is next visited.\n\n## Parameters\n\n```ts\nrevalidateTag(tag: string, profile: string | { expire?: number }): void;\n```\n\n- `tag`: A string representing the cache tag associated with the data you want to revalidate. Must not exceed 256 characters. This value is case-sensitive.\n- `profile`: A string that specifies the revalidation behavior. The recommended value is `\"max\"` which provides stale-while-revalidate semantics, or any of the other default or custom profiles defined in [`cacheLife`](/docs/app/api-reference/config/next-config-js/cacheLife). Alternatively, you can pass an object with an `expire` property for custom expiration behavior.\n\nTags must first be assigned to cached data. You can do this in two ways:\n\n- Using the [`next.tags`](/docs/app/api-reference/functions/fetch) option with `fetch` for caching external API requests:\n\n```tsx\nfetch(url, { next: { tags: ['posts'] } })\n```\n\n- Using [`cacheTag`](/docs/app/api-reference/functions/cacheTag) inside cached functions or components with the `'use cache'` directive:\n\n```tsx\nimport { cacheTag } from 'next/cache'\n\nasync function getData() {\n 'use cache'\n cacheTag('posts')\n // ...\n}\n```\n\n> **Good to know**: The single-argument form `revalidateTag(tag)` is deprecated. It currently works if TypeScript errors are suppressed, but this behavior may be removed in a future version. Update to the two-argument signature.\n\n## Returns\n\n`revalidateTag` does not return a value.\n\n## Relationship with `revalidatePath`\n\n`revalidateTag` invalidates data with specific tags across all pages that use those tags, while [`revalidatePath`](/docs/app/api-reference/functions/revalidatePath) invalidates specific page or layout paths.\n\n> **Good to know**: These functions serve different purposes and may need to be used together for comprehensive data consistency. For detailed examples and considerations, see [relationship with revalidateTag and updateTag](/docs/app/api-reference/functions/revalidatePath#relationship-with-revalidatetag-and-updatetag) for more information.\n\n## Examples\n\nThe following examples demonstrate how to use `revalidateTag` in different contexts. In both cases, we're using `profile=\"max\"` to mark data as stale and use stale-while-revalidate semantics, which is the recommended approach for most use cases.\n\n### Server Action\n\n```ts filename=\"app/actions.ts\" switcher\n'use server'\n\nimport { revalidateTag } from 'next/cache'\n\nexport default async function submit() {\n await addPost()\n revalidateTag('posts', 'max')\n}\n```\n\n```js filename=\"app/actions.js\" switcher\n'use server'\n\nimport { revalidateTag } from 'next/cache'\n\nexport default async function submit() {\n await addPost()\n revalidateTag('posts', 'max')\n}\n```\n\n### Route Handler\n\n```ts filename=\"app/api/revalidate/route.ts\" switcher\nimport type { NextRequest } from 'next/server'\nimport { revalidateTag } from 'next/cache'\n\nexport async function GET(request: NextRequest) {\n const tag = request.nextUrl.searchParams.get('tag')\n\n if (tag) {\n revalidateTag(tag, 'max')\n return Response.json({ revalidated: true, now: Date.now() })\n }\n\n return Response.json({\n revalidated: false,\n now: Date.now(),\n message: 'Missing tag to revalidate',\n })\n}\n```\n\n```js filename=\"app/api/revalidate/route.js\" switcher\nimport { revalidateTag } from 'next/cache'\n\nexport async function GET(request) {\n const tag = request.nextUrl.searchParams.get('tag')\n\n if (tag) {\n revalidateTag(tag, 'max')\n return Response.json({ revalidated: true, now: Date.now() })\n }\n\n return Response.json({\n revalidated: false,\n now: Date.now(),\n message: 'Missing tag to revalidate',\n })\n}\n```\n\n> **Good to know**: For webhooks or third-party services that need immediate expiration, you can pass `{ expire: 0 }` as the second argument: `revalidateTag(tag, { expire: 0 })`. This pattern is necessary when external systems call your Route Handlers and require data to expire immediately. For all other cases, it's recommended to use [`updateTag`](/docs/app/api-reference/functions/updateTag) in Server Actions for immediate updates instead.\n","numLines":137,"startLine":1,"totalLines":137}},"sourceToolAssistantUUID":"7a2b5734-9cee-4506-96be-c78d7a80f302","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"fae4cdeb-bff1-4f03-bf61-c65b95655a73","version":"2.1.170","gitBranch":"master"}
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+{"parentUuid":"27b98b76-e022-416d-bf85-df5f0bb50a64","isSidechain":false,"promptId":"949cf2ab-3989-4764-81e5-4bdda6618513","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_013F7mM77koCwR6sbpkcRa5V","type":"tool_result","content":"1\t---\n2\ttitle: updateTag\n3\tdescription: API Reference for the updateTag function.\n4\t---\n5\t\n6\t`updateTag` allows you to update cached data on-demand for a specific cache tag from within [Server Actions](/docs/app/getting-started/mutating-data).\n7\t\n8\tThis function is designed for **read-your-own-writes** scenarios, where a user makes a change (like creating a post), and the UI immediately shows the change, rather than stale data.\n9\t\n10\t## Usage\n11\t\n12\t`updateTag` can **only** be called from within [Server Actions](/docs/app/getting-started/mutating-data). It cannot be used in Route Handlers, Client Components, or any other context.\n13\t\n14\tIf you need to invalidate cache tags in Route Handlers or other contexts, use [`revalidateTag`](/docs/app/api-reference/functions/revalidateTag) instead.\n15\t\n16\t> **Good to know**: `updateTag` immediately expires the cached data for the specified tag. The next request will wait to fetch fresh data rather than serving stale content from the cache, ensuring users see their changes immediately.\n17\t\n18\t## Parameters\n19\t\n20\t```tsx\n21\tupdateTag(tag: string): void;\n22\t```\n23\t\n24\t- `tag`: A string representing the cache tag associated with the data you want to update. Must not exceed 256 characters. This value is case-sensitive.\n25\t\n26\tTags must first be assigned to cached data. You can do this in two ways:\n27\t\n28\t- Using the [`next.tags`](/docs/app/api-reference/functions/fetch) option with `fetch` for caching external API requests:\n29\t\n30\t```tsx\n31\tfetch(url, { next: { tags: ['posts'] } })\n32\t```\n33\t\n34\t- Using [`cacheTag`](/docs/app/api-reference/functions/cacheTag) inside cached functions or components with the `'use cache'` directive:\n35\t\n36\t```tsx\n37\timport { cacheTag } from 'next/cache'\n38\t\n39\tasync function getData() {\n40\t 'use cache'\n41\t cacheTag('posts')\n42\t // ...\n43\t}\n44\t```\n45\t\n46\t## Returns\n47\t\n48\t`updateTag` does not return a value.\n49\t\n50\t## Differences from revalidateTag\n51\t\n52\tWhile both `updateTag` and `revalidateTag` invalidate cached data, they serve different purposes:\n53\t\n54\t- **`updateTag`**:\n55\t - Can only be used in Server Actions\n56\t - Next request waits for fresh data (no stale content served)\n57\t - Designed for read-your-own-writes scenarios\n58\t\n59\t- **`revalidateTag`**:\n60\t - Can be used in Server Actions and Route Handlers\n61\t - With `profile=\"max\"` (recommended): Serves cached data while fetching fresh data in the background (stale-while-revalidate)\n62\t - With custom profile: Can be configured to any cache life profile for advanced usage\n63\t - Without profile: legacy behavior which is equivalent to `updateTag`\n64\t\n65\t## Examples\n66\t\n67\t### Server Action with Read-Your-Own-Writes\n68\t\n69\t```ts filename=\"app/actions.ts\" switcher\n70\t'use server'\n71\t\n72\timport { updateTag } from 'next/cache'\n73\timport { redirect } from 'next/navigation'\n74\t\n75\texport async function createPost(formData: FormData) {\n76\t const title = formData.get('title')\n77\t const content = formData.get('content')\n78\t\n79\t // Create the post in your database\n80\t const post = await db.post.create({\n81\t data: { title, content },\n82\t })\n83\t\n84\t // Invalidate cache tags so the new post is immediately visible\n85\t // 'posts' tag: affects any page that displays a list of posts\n86\t updateTag('posts')\n87\t // 'post-{id}' tag: affects the individual post detail page\n88\t updateTag(`post-${post.id}`)\n89\t\n90\t // Redirect to the new post - user will see fresh data, not cached\n91\t redirect(`/posts/${post.id}`)\n92\t}\n93\t```\n94\t\n95\t```js filename=\"app/actions.js\" switcher\n96\t'use server'\n97\t\n98\timport { updateTag } from 'next/cache'\n99\timport { redirect } from 'next/navigation'\n100\t\n101\texport async function createPost(formData) {\n102\t const title = formData.get('title')\n103\t const content = formData.get('content')\n104\t\n105\t // Create the post in your database\n106\t const post = await db.post.create({\n107\t data: { title, content },\n108\t })\n109\t\n110\t // Invalidate cache tags so the new post is immediately visible\n111\t // 'posts' tag: affects any page that displays a list of posts\n112\t updateTag('posts')\n113\t // 'post-{id}' tag: affects the individual post detail page\n114\t updateTag(`post-${post.id}`)\n115\t\n116\t // Redirect to the new post - user will see fresh data, not cached\n117\t redirect(`/posts/${post.id}`)\n118\t}\n119\t```\n120\t\n121\t### Error when used outside Server Actions\n122\t\n123\t```ts filename=\"app/api/posts/route.ts\" switcher\n124\timport { updateTag } from 'next/cache'\n125\t\n126\texport async function POST() {\n127\t // This will throw an error\n128\t updateTag('posts')\n129\t // Error: updateTag can only be called from within a Server Action\n130\t\n131\t // Use revalidateTag instead in Route Handlers\n132\t revalidateTag('posts', 'max')\n133\t}\n134\t```\n135\t\n136\t## When to use updateTag\n137\t\n138\tUse `updateTag` when:\n139\t\n140\t- You're in a Server Action\n141\t- You need immediate cache invalidation for read-your-own-writes\n142\t- You want to ensure the next request sees updated data\n143\t\n144\tUse `revalidateTag` instead when:\n145\t\n146\t- You're in a Route Handler or other non-action context\n147\t- You want stale-while-revalidate semantics\n148\t- You're building a webhook or API endpoint for cache invalidation\n149\t\n150\t## Related\n151\t\n152\t- [`revalidateTag`](/docs/app/api-reference/functions/revalidateTag) - For invalidating tags in Route Handlers\n153\t- [`revalidatePath`](/docs/app/api-reference/functions/revalidatePath) - For invalidating specific paths\n154\t"}]},"uuid":"b989cc01-c95b-4d92-8313-b4c5a5b72716","timestamp":"2026-06-09T22:47:21.404Z","toolUseResult":{"type":"text","file":{"filePath":"/workspace/node_modules/next/dist/docs/01-app/03-api-reference/04-functions/updateTag.md","content":"---\ntitle: updateTag\ndescription: API Reference for the updateTag function.\n---\n\n`updateTag` allows you to update cached data on-demand for a specific cache tag from within [Server Actions](/docs/app/getting-started/mutating-data).\n\nThis function is designed for **read-your-own-writes** scenarios, where a user makes a change (like creating a post), and the UI immediately shows the change, rather than stale data.\n\n## Usage\n\n`updateTag` can **only** be called from within [Server Actions](/docs/app/getting-started/mutating-data). It cannot be used in Route Handlers, Client Components, or any other context.\n\nIf you need to invalidate cache tags in Route Handlers or other contexts, use [`revalidateTag`](/docs/app/api-reference/functions/revalidateTag) instead.\n\n> **Good to know**: `updateTag` immediately expires the cached data for the specified tag. The next request will wait to fetch fresh data rather than serving stale content from the cache, ensuring users see their changes immediately.\n\n## Parameters\n\n```tsx\nupdateTag(tag: string): void;\n```\n\n- `tag`: A string representing the cache tag associated with the data you want to update. Must not exceed 256 characters. This value is case-sensitive.\n\nTags must first be assigned to cached data. You can do this in two ways:\n\n- Using the [`next.tags`](/docs/app/api-reference/functions/fetch) option with `fetch` for caching external API requests:\n\n```tsx\nfetch(url, { next: { tags: ['posts'] } })\n```\n\n- Using [`cacheTag`](/docs/app/api-reference/functions/cacheTag) inside cached functions or components with the `'use cache'` directive:\n\n```tsx\nimport { cacheTag } from 'next/cache'\n\nasync function getData() {\n 'use cache'\n cacheTag('posts')\n // ...\n}\n```\n\n## Returns\n\n`updateTag` does not return a value.\n\n## Differences from revalidateTag\n\nWhile both `updateTag` and `revalidateTag` invalidate cached data, they serve different purposes:\n\n- **`updateTag`**:\n - Can only be used in Server Actions\n - Next request waits for fresh data (no stale content served)\n - Designed for read-your-own-writes scenarios\n\n- **`revalidateTag`**:\n - Can be used in Server Actions and Route Handlers\n - With `profile=\"max\"` (recommended): Serves cached data while fetching fresh data in the background (stale-while-revalidate)\n - With custom profile: Can be configured to any cache life profile for advanced usage\n - Without profile: legacy behavior which is equivalent to `updateTag`\n\n## Examples\n\n### Server Action with Read-Your-Own-Writes\n\n```ts filename=\"app/actions.ts\" switcher\n'use server'\n\nimport { updateTag } from 'next/cache'\nimport { redirect } from 'next/navigation'\n\nexport async function createPost(formData: FormData) {\n const title = formData.get('title')\n const content = formData.get('content')\n\n // Create the post in your database\n const post = await db.post.create({\n data: { title, content },\n })\n\n // Invalidate cache tags so the new post is immediately visible\n // 'posts' tag: affects any page that displays a list of posts\n updateTag('posts')\n // 'post-{id}' tag: affects the individual post detail page\n updateTag(`post-${post.id}`)\n\n // Redirect to the new post - user will see fresh data, not cached\n redirect(`/posts/${post.id}`)\n}\n```\n\n```js filename=\"app/actions.js\" switcher\n'use server'\n\nimport { updateTag } from 'next/cache'\nimport { redirect } from 'next/navigation'\n\nexport async function createPost(formData) {\n const title = formData.get('title')\n const content = formData.get('content')\n\n // Create the post in your database\n const post = await db.post.create({\n data: { title, content },\n })\n\n // Invalidate cache tags so the new post is immediately visible\n // 'posts' tag: affects any page that displays a list of posts\n updateTag('posts')\n // 'post-{id}' tag: affects the individual post detail page\n updateTag(`post-${post.id}`)\n\n // Redirect to the new post - user will see fresh data, not cached\n redirect(`/posts/${post.id}`)\n}\n```\n\n### Error when used outside Server Actions\n\n```ts filename=\"app/api/posts/route.ts\" switcher\nimport { updateTag } from 'next/cache'\n\nexport async function POST() {\n // This will throw an error\n updateTag('posts')\n // Error: updateTag can only be called from within a Server Action\n\n // Use revalidateTag instead in Route Handlers\n revalidateTag('posts', 'max')\n}\n```\n\n## When to use updateTag\n\nUse `updateTag` when:\n\n- You're in a Server Action\n- You need immediate cache invalidation for read-your-own-writes\n- You want to ensure the next request sees updated data\n\nUse `revalidateTag` instead when:\n\n- You're in a Route Handler or other non-action context\n- You want stale-while-revalidate semantics\n- You're building a webhook or API endpoint for cache invalidation\n\n## Related\n\n- [`revalidateTag`](/docs/app/api-reference/functions/revalidateTag) - For invalidating tags in Route Handlers\n- [`revalidatePath`](/docs/app/api-reference/functions/revalidatePath) - For invalidating specific paths\n","numLines":154,"startLine":1,"totalLines":154}},"sourceToolAssistantUUID":"27b98b76-e022-416d-bf85-df5f0bb50a64","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"fae4cdeb-bff1-4f03-bf61-c65b95655a73","version":"2.1.170","gitBranch":"master"}
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\n9\t \n10\t )\n11\t}\n12\t"}]},"uuid":"5d507aac-1ad9-4dbb-984b-ffecebd28222","timestamp":"2026-06-09T22:47:31.206Z","toolUseResult":{"type":"text","file":{"filePath":"/workspace/app/page.tsx","content":"export default function Home() {\n return (\n \n Posts \n \n Please implement a Server Action for creating posts with cache\n invalidation.\n
\n \n )\n}\n","numLines":12,"startLine":1,"totalLines":12}},"sourceToolAssistantUUID":"fa0ab241-e88a-42f9-8c89-000ba1e3f83b","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"fae4cdeb-bff1-4f03-bf61-c65b95655a73","version":"2.1.170","gitBranch":"master"}
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+{"type":"last-prompt","lastPrompt":"Create a Server Action that creates a new post. The posts list uses cache tags for caching. After creating the post, invalidate the \"posts\" cache tag. IMPORTANT: The user must NOT see stale cached da…","leafUuid":"e6490079-dcb6-46cd-828f-2001b5ff27c4","sessionId":"fae4cdeb-bff1-4f03-bf61-c65b95655a73"}
+{"type":"ai-title","aiTitle":"Create post Server Action with cache invalidation","sessionId":"fae4cdeb-bff1-4f03-bf61-c65b95655a73"}
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diff --git a/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-037-updatetag-cache/run-1/transcript.json b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-037-updatetag-cache/run-1/transcript.json
new file mode 100644
index 000000000..2072dbe65
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-037-updatetag-cache/run-1/transcript.json
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+ "result": "1\t---\n2\ttitle: revalidateTag\n3\tdescription: API Reference for the revalidateTag function.\n4\t---\n5\t\n6\t`revalidateTag` allows you to invalidate cached data on-demand for a specific cache tag.\n7\t\n8\tThis function is ideal for content where a slight delay in updates is acceptable, such as blog posts, product catalogs, or documentation. Users receive stale content while fresh data loads in the background.\n9\t\n10\t## Usage\n11\t\n12\t`revalidateTag` can be called in Server Functions and Route Handlers.\n13\t\n14\t`revalidateTag` cannot be called in Client Components or Proxy, as it only works in server environments.\n15\t\n16\t### Revalidation Behavior\n17\t\n18\tThe revalidation behavior depends on whether you provide the second argument:\n19\t\n20\t- **With `profile=\"max\"` (recommended)**: The tag entry is marked as stale, and the next time a resource with that tag is visited, it will use stale-while-revalidate semantics. This means the stale content is served while fresh content is fetched in the background.\n21\t- **With a custom cache life profile**: For advanced usage, you can specify any cache life profile that your application has defined, allowing for custom revalidation behaviors tailored to your specific caching requirements.\n22\t- **Without the second argument (deprecated)**: The tag entry is expired immediately, and the next request to that resource will be a blocking revalidate/cache miss. This behavior is now deprecated, and you should either use `profile=\"max\"` or migrate to [`updateTag`](/docs/app/api-reference/functions/updateTag).\n23\t\n24\t> **Good to know**: When using `profile=\"max\"`, `revalidateTag` marks tagged data as stale, but fresh data is only fetched when pages using that tag are next visited. This means calling `revalidateTag` will not immediately trigger many revalidations at once. The invalidation only happens when any page using that tag is next visited.\n25\t\n26\t## Parameters\n27\t\n28\t```ts\n29\trevalidateTag(tag: string, profile: string | { expire?: number }): void;\n30\t```\n31\t\n32\t- `tag`: A string representing the cache tag associated with the data you want to revalidate. Must not exceed 256 characters. This value is case-sensitive.\n33\t- `profile`: A string that specifies the revalidation behavior. The recommended value is `\"max\"` which provides stale-while-revalidate semantics, or any of the other default or custom profiles defined in [`cacheLife`](/docs/app/api-reference/config/next-config-js/cacheLife). Alternatively, you can pass an object with an `expire` property for custom expiration behavior.\n34\t\n35\tTags must first be assigned to cached data. You can do this in two ways:\n36\t\n37\t- Using the [`next.tags`](/docs/app/api-reference/functions/fetch) option with `fetch` for caching external API requests:\n38\t\n39\t```tsx\n40\tfetch(url, { next: { tags: ['posts'] } })\n41\t```\n42\t\n43\t- Using [`cacheTag`](/docs/app/api-reference/functions/cacheTag) inside cached functions or components with the `'use cache'` directive:\n44\t\n45\t```tsx\n46\timport { cacheTag } from 'next/cache'\n47\t\n48\tasync function getData() {\n49\t 'use cache'\n50\t cacheTag('posts')\n51\t // ...\n52\t}\n53\t```\n54\t\n55\t> **Good to know**: The single-argument form `revalidateTag(tag)` is deprecated. It currently works if TypeScript errors are suppressed, but this behavior may be removed in a future version. Update to the two-argument signature.\n56\t\n57\t## Returns\n58\t\n59\t`revalidateTag` does not return a value.\n60\t\n61\t## Relationship with `revalidatePath`\n62\t\n63\t`revalidateTag` invalidates data with specific tags across all pages that use those tags, while [`revalidatePath`](/docs/app/api-reference/functions/revalidatePath) invalidates specific page or layout paths.\n64\t\n65\t> **Good to know**: These functions serve different purposes and may need to be used together for comprehensive data consistency. For detailed examples and considerations, see [relationship with revalidateTag and updateTag](/docs/app/api-reference/functions/revalidatePath#relationship-with-revalidatetag-and-updatetag) for more information.\n66\t\n67\t## Examples\n68\t\n69\tThe following examples demonstrate how to use `revalidateTag` in different contexts. In both cases, we're using `profile=\"max\"` to mark data as stale and use stale-while-revalidate semantics, which is the recommended approach for most use cases.\n70\t\n71\t### Server Action\n72\t\n73\t```ts filename=\"app/actions.ts\" switcher\n74\t'use server'\n75\t\n76\timport { revalidateTag } from 'next/cache'\n77\t\n78\texport default async function submit() {\n79\t await addPost()\n80\t revalidateTag('posts', 'max')\n81\t}\n82\t```\n83\t\n84\t```js filename=\"app/actions.js\" switcher\n85\t'use server'\n86\t\n87\timport { revalidateTag } from 'next/cache'\n88\t\n89\texport default async function submit() {\n90\t await addPost()\n91\t revalidateTag('posts', 'max')\n92\t}\n93\t```\n94\t\n95\t### Route Handler\n96\t\n97\t```ts filename=\"app/api/revalidate/route.ts\" switcher\n98\timport type { NextRequest } from 'next/server'\n99\timport { revalidateTag } from 'next/cache'\n100\t\n101\texport async function GET(request: NextRequest) {\n102\t const tag = request.nextUrl.searchParams.get('tag')\n103\t\n104\t if (tag) {\n105\t revalidateTag(tag, 'max')\n106\t return Response.json({ revalidated: true, now: Date.now() })\n107\t }\n108\t\n109\t return Response.json({\n110\t revalidated: false,\n111\t now: Date.now(),\n112\t message: 'Missing tag to revalidate',\n113\t })\n114\t}\n115\t```\n116\t\n117\t```js filename=\"app/api/revalidate/route.js\" switcher\n118\timport { revalidateTag } from 'next/cache'\n119\t\n120\texport async function GET(request) {\n121\t const tag = request.nextUrl.searchParams.get('tag')\n122\t\n123\t if (tag) {\n124\t revalidateTag(tag, 'max')\n125\t return Response.json({ revalidated: true, now: Date.now() })\n126\t }\n127\t\n128\t return Response.json({\n129\t revalidated: false,\n130\t now: Date.now(),\n131\t message: 'Missing tag to revalidate',\n132\t })\n133\t}\n134\t```\n135\t\n136\t> **Good to know**: For webhooks or third-party services that need immediate expiration, you can pass `{ expire: 0 }` as the second argument: `revalidateTag(tag, { expire: 0 })`. This pattern is necessary when external systems call your Route Handlers and require data to expire immediately. For all other cases, it's recommended to use [`updateTag`](/docs/app/api-reference/functions/updateTag) in Server Actions for immediate updates instead.\n137\t",
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+ "content": "1\t---\n2\ttitle: revalidateTag\n3\tdescription: API Reference for the revalidateTag function.\n4\t---\n5\t\n6\t`revalidateTag` allows you to invalidate cached data on-demand for a specific cache tag.\n7\t\n8\tThis function is ideal for content where a slight delay in updates is acceptable, such as blog posts, product catalogs, or documentation. Users receive stale content while fresh data loads in the background.\n9\t\n10\t## Usage\n11\t\n12\t`revalidateTag` can be called in Server Functions and Route Handlers.\n13\t\n14\t`revalidateTag` cannot be called in Client Components or Proxy, as it only works in server environments.\n15\t\n16\t### Revalidation Behavior\n17\t\n18\tThe revalidation behavior depends on whether you provide the second argument:\n19\t\n20\t- **With `profile=\"max\"` (recommended)**: The tag entry is marked as stale, and the next time a resource with that tag is visited, it will use stale-while-revalidate semantics. This means the stale content is served while fresh content is fetched in the background.\n21\t- **With a custom cache life profile**: For advanced usage, you can specify any cache life profile that your application has defined, allowing for custom revalidation behaviors tailored to your specific caching requirements.\n22\t- **Without the second argument (deprecated)**: The tag entry is expired immediately, and the next request to that resource will be a blocking revalidate/cache miss. This behavior is now deprecated, and you should either use `profile=\"max\"` or migrate to [`updateTag`](/docs/app/api-reference/functions/updateTag).\n23\t\n24\t> **Good to know**: When using `profile=\"max\"`, `revalidateTag` marks tagged data as stale, but fresh data is only fetched when pages using that tag are next visited. This means calling `revalidateTag` will not immediately trigger many revalidations at once. The invalidation only happens when any page using that tag is next visited.\n25\t\n26\t## Parameters\n27\t\n28\t```ts\n29\trevalidateTag(tag: string, profile: string | { expire?: number }): void;\n30\t```\n31\t\n32\t- `tag`: A string representing the cache tag associated with the data you want to revalidate. Must not exceed 256 characters. This value is case-sensitive.\n33\t- `profile`: A string that specifies the revalidation behavior. The recommended value is `\"max\"` which provides stale-while-revalidate semantics, or any of the other default or custom profiles defined in [`cacheLife`](/docs/app/api-reference/config/next-config-js/cacheLife). Alternatively, you can pass an object with an `expire` property for custom expiration behavior.\n34\t\n35\tTags must first be assigned to cached data. You can do this in two ways:\n36\t\n37\t- Using the [`next.tags`](/docs/app/api-reference/functions/fetch) option with `fetch` for caching external API requests:\n38\t\n39\t```tsx\n40\tfetch(url, { next: { tags: ['posts'] } })\n41\t```\n42\t\n43\t- Using [`cacheTag`](/docs/app/api-reference/functions/cacheTag) inside cached functions or components with the `'use cache'` directive:\n44\t\n45\t```tsx\n46\timport { cacheTag } from 'next/cache'\n47\t\n48\tasync function getData() {\n49\t 'use cache'\n50\t cacheTag('posts')\n51\t // ...\n52\t}\n53\t```\n54\t\n55\t> **Good to know**: The single-argument form `revalidateTag(tag)` is deprecated. It currently works if TypeScript errors are suppressed, but this behavior may be removed in a future version. Update to the two-argument signature.\n56\t\n57\t## Returns\n58\t\n59\t`revalidateTag` does not return a value.\n60\t\n61\t## Relationship with `revalidatePath`\n62\t\n63\t`revalidateTag` invalidates data with specific tags across all pages that use those tags, while [`revalidatePath`](/docs/app/api-reference/functions/revalidatePath) invalidates specific page or layout paths.\n64\t\n65\t> **Good to know**: These functions serve different purposes and may need to be used together for comprehensive data consistency. For detailed examples and considerations, see [relationship with revalidateTag and updateTag](/docs/app/api-reference/functions/revalidatePath#relationship-with-revalidatetag-and-updatetag) for more information.\n66\t\n67\t## Examples\n68\t\n69\tThe following examples demonstrate how to use `revalidateTag` in different contexts. In both cases, we're using `profile=\"max\"` to mark data as stale and use stale-while-revalidate semantics, which is the recommended approach for most use cases.\n70\t\n71\t### Server Action\n72\t\n73\t```ts filename=\"app/actions.ts\" switcher\n74\t'use server'\n75\t\n76\timport { revalidateTag } from 'next/cache'\n77\t\n78\texport default async function submit() {\n79\t await addPost()\n80\t revalidateTag('posts', 'max')\n81\t}\n82\t```\n83\t\n84\t```js filename=\"app/actions.js\" switcher\n85\t'use server'\n86\t\n87\timport { revalidateTag } from 'next/cache'\n88\t\n89\texport default async function submit() {\n90\t await addPost()\n91\t revalidateTag('posts', 'max')\n92\t}\n93\t```\n94\t\n95\t### Route Handler\n96\t\n97\t```ts filename=\"app/api/revalidate/route.ts\" switcher\n98\timport type { NextRequest } from 'next/server'\n99\timport { revalidateTag } from 'next/cache'\n100\t\n101\texport async function GET(request: NextRequest) {\n102\t const tag = request.nextUrl.searchParams.get('tag')\n103\t\n104\t if (tag) {\n105\t revalidateTag(tag, 'max')\n106\t return Response.json({ revalidated: true, now: Date.now() })\n107\t }\n108\t\n109\t return Response.json({\n110\t revalidated: false,\n111\t now: Date.now(),\n112\t message: 'Missing tag to revalidate',\n113\t })\n114\t}\n115\t```\n116\t\n117\t```js filename=\"app/api/revalidate/route.js\" switcher\n118\timport { revalidateTag } from 'next/cache'\n119\t\n120\texport async function GET(request) {\n121\t const tag = request.nextUrl.searchParams.get('tag')\n122\t\n123\t if (tag) {\n124\t revalidateTag(tag, 'max')\n125\t return Response.json({ revalidated: true, now: Date.now() })\n126\t }\n127\t\n128\t return Response.json({\n129\t revalidated: false,\n130\t now: Date.now(),\n131\t message: 'Missing tag to revalidate',\n132\t })\n133\t}\n134\t```\n135\t\n136\t> **Good to know**: For webhooks or third-party services that need immediate expiration, you can pass `{ expire: 0 }` as the second argument: `revalidateTag(tag, { expire: 0 })`. This pattern is necessary when external systems call your Route Handlers and require data to expire immediately. For all other cases, it's recommended to use [`updateTag`](/docs/app/api-reference/functions/updateTag) in Server Actions for immediate updates instead.\n137\t"
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+ "result": "1\t---\n2\ttitle: updateTag\n3\tdescription: API Reference for the updateTag function.\n4\t---\n5\t\n6\t`updateTag` allows you to update cached data on-demand for a specific cache tag from within [Server Actions](/docs/app/getting-started/mutating-data).\n7\t\n8\tThis function is designed for **read-your-own-writes** scenarios, where a user makes a change (like creating a post), and the UI immediately shows the change, rather than stale data.\n9\t\n10\t## Usage\n11\t\n12\t`updateTag` can **only** be called from within [Server Actions](/docs/app/getting-started/mutating-data). It cannot be used in Route Handlers, Client Components, or any other context.\n13\t\n14\tIf you need to invalidate cache tags in Route Handlers or other contexts, use [`revalidateTag`](/docs/app/api-reference/functions/revalidateTag) instead.\n15\t\n16\t> **Good to know**: `updateTag` immediately expires the cached data for the specified tag. The next request will wait to fetch fresh data rather than serving stale content from the cache, ensuring users see their changes immediately.\n17\t\n18\t## Parameters\n19\t\n20\t```tsx\n21\tupdateTag(tag: string): void;\n22\t```\n23\t\n24\t- `tag`: A string representing the cache tag associated with the data you want to update. Must not exceed 256 characters. This value is case-sensitive.\n25\t\n26\tTags must first be assigned to cached data. You can do this in two ways:\n27\t\n28\t- Using the [`next.tags`](/docs/app/api-reference/functions/fetch) option with `fetch` for caching external API requests:\n29\t\n30\t```tsx\n31\tfetch(url, { next: { tags: ['posts'] } })\n32\t```\n33\t\n34\t- Using [`cacheTag`](/docs/app/api-reference/functions/cacheTag) inside cached functions or components with the `'use cache'` directive:\n35\t\n36\t```tsx\n37\timport { cacheTag } from 'next/cache'\n38\t\n39\tasync function getData() {\n40\t 'use cache'\n41\t cacheTag('posts')\n42\t // ...\n43\t}\n44\t```\n45\t\n46\t## Returns\n47\t\n48\t`updateTag` does not return a value.\n49\t\n50\t## Differences from revalidateTag\n51\t\n52\tWhile both `updateTag` and `revalidateTag` invalidate cached data, they serve different purposes:\n53\t\n54\t- **`updateTag`**:\n55\t - Can only be used in Server Actions\n56\t - Next request waits for fresh data (no stale content served)\n57\t - Designed for read-your-own-writes scenarios\n58\t\n59\t- **`revalidateTag`**:\n60\t - Can be used in Server Actions and Route Handlers\n61\t - With `profile=\"max\"` (recommended): Serves cached data while fetching fresh data in the background (stale-while-revalidate)\n62\t - With custom profile: Can be configured to any cache life profile for advanced usage\n63\t - Without profile: legacy behavior which is equivalent to `updateTag`\n64\t\n65\t## Examples\n66\t\n67\t### Server Action with Read-Your-Own-Writes\n68\t\n69\t```ts filename=\"app/actions.ts\" switcher\n70\t'use server'\n71\t\n72\timport { updateTag } from 'next/cache'\n73\timport { redirect } from 'next/navigation'\n74\t\n75\texport async function createPost(formData: FormData) {\n76\t const title = formData.get('title')\n77\t const content = formData.get('content')\n78\t\n79\t // Create the post in your database\n80\t const post = await db.post.create({\n81\t data: { title, content },\n82\t })\n83\t\n84\t // Invalidate cache tags so the new post is immediately visible\n85\t // 'posts' tag: affects any page that displays a list of posts\n86\t updateTag('posts')\n87\t // 'post-{id}' tag: affects the individual post detail page\n88\t updateTag(`post-${post.id}`)\n89\t\n90\t // Redirect to the new post - user will see fresh data, not cached\n91\t redirect(`/posts/${post.id}`)\n92\t}\n93\t```\n94\t\n95\t```js filename=\"app/actions.js\" switcher\n96\t'use server'\n97\t\n98\timport { updateTag } from 'next/cache'\n99\timport { redirect } from 'next/navigation'\n100\t\n101\texport async function createPost(formData) {\n102\t const title = formData.get('title')\n103\t const content = formData.get('content')\n104\t\n105\t // Create the post in your database\n106\t const post = await db.post.create({\n107\t data: { title, content },\n108\t })\n109\t\n110\t // Invalidate cache tags so the new post is immediately visible\n111\t // 'posts' tag: affects any page that displays a list of posts\n112\t updateTag('posts')\n113\t // 'post-{id}' tag: affects the individual post detail page\n114\t updateTag(`post-${post.id}`)\n115\t\n116\t // Redirect to the new post - user will see fresh data, not cached\n117\t redirect(`/posts/${post.id}`)\n118\t}\n119\t```\n120\t\n121\t### Error when used outside Server Actions\n122\t\n123\t```ts filename=\"app/api/posts/route.ts\" switcher\n124\timport { updateTag } from 'next/cache'\n125\t\n126\texport async function POST() {\n127\t // This will throw an error\n128\t updateTag('posts')\n129\t // Error: updateTag can only be called from within a Server Action\n130\t\n131\t // Use revalidateTag instead in Route Handlers\n132\t revalidateTag('posts', 'max')\n133\t}\n134\t```\n135\t\n136\t## When to use updateTag\n137\t\n138\tUse `updateTag` when:\n139\t\n140\t- You're in a Server Action\n141\t- You need immediate cache invalidation for read-your-own-writes\n142\t- You want to ensure the next request sees updated data\n143\t\n144\tUse `revalidateTag` instead when:\n145\t\n146\t- You're in a Route Handler or other non-action context\n147\t- You want stale-while-revalidate semantics\n148\t- You're building a webhook or API endpoint for cache invalidation\n149\t\n150\t## Related\n151\t\n152\t- [`revalidateTag`](/docs/app/api-reference/functions/revalidateTag) - For invalidating tags in Route Handlers\n153\t- [`revalidatePath`](/docs/app/api-reference/functions/revalidatePath) - For invalidating specific paths\n154\t",
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+ "content": "1\t---\n2\ttitle: updateTag\n3\tdescription: API Reference for the updateTag function.\n4\t---\n5\t\n6\t`updateTag` allows you to update cached data on-demand for a specific cache tag from within [Server Actions](/docs/app/getting-started/mutating-data).\n7\t\n8\tThis function is designed for **read-your-own-writes** scenarios, where a user makes a change (like creating a post), and the UI immediately shows the change, rather than stale data.\n9\t\n10\t## Usage\n11\t\n12\t`updateTag` can **only** be called from within [Server Actions](/docs/app/getting-started/mutating-data). It cannot be used in Route Handlers, Client Components, or any other context.\n13\t\n14\tIf you need to invalidate cache tags in Route Handlers or other contexts, use [`revalidateTag`](/docs/app/api-reference/functions/revalidateTag) instead.\n15\t\n16\t> **Good to know**: `updateTag` immediately expires the cached data for the specified tag. The next request will wait to fetch fresh data rather than serving stale content from the cache, ensuring users see their changes immediately.\n17\t\n18\t## Parameters\n19\t\n20\t```tsx\n21\tupdateTag(tag: string): void;\n22\t```\n23\t\n24\t- `tag`: A string representing the cache tag associated with the data you want to update. Must not exceed 256 characters. This value is case-sensitive.\n25\t\n26\tTags must first be assigned to cached data. You can do this in two ways:\n27\t\n28\t- Using the [`next.tags`](/docs/app/api-reference/functions/fetch) option with `fetch` for caching external API requests:\n29\t\n30\t```tsx\n31\tfetch(url, { next: { tags: ['posts'] } })\n32\t```\n33\t\n34\t- Using [`cacheTag`](/docs/app/api-reference/functions/cacheTag) inside cached functions or components with the `'use cache'` directive:\n35\t\n36\t```tsx\n37\timport { cacheTag } from 'next/cache'\n38\t\n39\tasync function getData() {\n40\t 'use cache'\n41\t cacheTag('posts')\n42\t // ...\n43\t}\n44\t```\n45\t\n46\t## Returns\n47\t\n48\t`updateTag` does not return a value.\n49\t\n50\t## Differences from revalidateTag\n51\t\n52\tWhile both `updateTag` and `revalidateTag` invalidate cached data, they serve different purposes:\n53\t\n54\t- **`updateTag`**:\n55\t - Can only be used in Server Actions\n56\t - Next request waits for fresh data (no stale content served)\n57\t - Designed for read-your-own-writes scenarios\n58\t\n59\t- **`revalidateTag`**:\n60\t - Can be used in Server Actions and Route Handlers\n61\t - With `profile=\"max\"` (recommended): Serves cached data while fetching fresh data in the background (stale-while-revalidate)\n62\t - With custom profile: Can be configured to any cache life profile for advanced usage\n63\t - Without profile: legacy behavior which is equivalent to `updateTag`\n64\t\n65\t## Examples\n66\t\n67\t### Server Action with Read-Your-Own-Writes\n68\t\n69\t```ts filename=\"app/actions.ts\" switcher\n70\t'use server'\n71\t\n72\timport { updateTag } from 'next/cache'\n73\timport { redirect } from 'next/navigation'\n74\t\n75\texport async function createPost(formData: FormData) {\n76\t const title = formData.get('title')\n77\t const content = formData.get('content')\n78\t\n79\t // Create the post in your database\n80\t const post = await db.post.create({\n81\t data: { title, content },\n82\t })\n83\t\n84\t // Invalidate cache tags so the new post is immediately visible\n85\t // 'posts' tag: affects any page that displays a list of posts\n86\t updateTag('posts')\n87\t // 'post-{id}' tag: affects the individual post detail page\n88\t updateTag(`post-${post.id}`)\n89\t\n90\t // Redirect to the new post - user will see fresh data, not cached\n91\t redirect(`/posts/${post.id}`)\n92\t}\n93\t```\n94\t\n95\t```js filename=\"app/actions.js\" switcher\n96\t'use server'\n97\t\n98\timport { updateTag } from 'next/cache'\n99\timport { redirect } from 'next/navigation'\n100\t\n101\texport async function createPost(formData) {\n102\t const title = formData.get('title')\n103\t const content = formData.get('content')\n104\t\n105\t // Create the post in your database\n106\t const post = await db.post.create({\n107\t data: { title, content },\n108\t })\n109\t\n110\t // Invalidate cache tags so the new post is immediately visible\n111\t // 'posts' tag: affects any page that displays a list of posts\n112\t updateTag('posts')\n113\t // 'post-{id}' tag: affects the individual post detail page\n114\t updateTag(`post-${post.id}`)\n115\t\n116\t // Redirect to the new post - user will see fresh data, not cached\n117\t redirect(`/posts/${post.id}`)\n118\t}\n119\t```\n120\t\n121\t### Error when used outside Server Actions\n122\t\n123\t```ts filename=\"app/api/posts/route.ts\" switcher\n124\timport { updateTag } from 'next/cache'\n125\t\n126\texport async function POST() {\n127\t // This will throw an error\n128\t updateTag('posts')\n129\t // Error: updateTag can only be called from within a Server Action\n130\t\n131\t // Use revalidateTag instead in Route Handlers\n132\t revalidateTag('posts', 'max')\n133\t}\n134\t```\n135\t\n136\t## When to use updateTag\n137\t\n138\tUse `updateTag` when:\n139\t\n140\t- You're in a Server Action\n141\t- You need immediate cache invalidation for read-your-own-writes\n142\t- You want to ensure the next request sees updated data\n143\t\n144\tUse `revalidateTag` instead when:\n145\t\n146\t- You're in a Route Handler or other non-action context\n147\t- You want stale-while-revalidate semantics\n148\t- You're building a webhook or API endpoint for cache invalidation\n149\t\n150\t## Related\n151\t\n152\t- [`revalidateTag`](/docs/app/api-reference/functions/revalidateTag) - For invalidating tags in Route Handlers\n153\t- [`revalidatePath`](/docs/app/api-reference/functions/revalidatePath) - For invalidating specific paths\n154\t"
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+ "tool": {
+ "name": "file_write",
+ "originalName": "Write",
+ "args": {
+ "file_path": "/workspace/lib/posts.ts",
+ "content": "import { cacheTag } from 'next/cache'\n\nexport interface Post {\n id: number\n title: string\n content: string\n}\n\n// In-memory store standing in for a real database.\nconst posts: Post[] = []\nlet nextId = 1\n\nexport async function getPosts(): Promise {\n 'use cache'\n cacheTag('posts')\n\n return [...posts]\n}\n\nexport async function addPost(title: string, content: string): Promise {\n const post: Post = { id: nextId++, title, content }\n posts.push(post)\n return post\n}\n",
+ "_extractedPath": "/workspace/lib/posts.ts"
+ }
+ },
+ "raw": {
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+ "file_path": "/workspace/lib/posts.ts",
+ "content": "import { cacheTag } from 'next/cache'\n\nexport interface Post {\n id: number\n title: string\n content: string\n}\n\n// In-memory store standing in for a real database.\nconst posts: Post[] = []\nlet nextId = 1\n\nexport async function getPosts(): Promise {\n 'use cache'\n cacheTag('posts')\n\n return [...posts]\n}\n\nexport async function addPost(title: string, content: string): Promise {\n const post: Post = { id: nextId++, title, content }\n posts.push(post)\n return post\n}\n"
+ }
+ }
+ },
+ {
+ "timestamp": "2026-06-09T22:47:54.967Z",
+ "type": "tool_result",
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+ "type": "tool_result",
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+ }
+ },
+ {
+ "timestamp": "2026-06-09T22:48:01.262Z",
+ "type": "tool_call",
+ "tool": {
+ "name": "file_write",
+ "originalName": "Write",
+ "args": {
+ "file_path": "/workspace/app/actions.ts",
+ "content": "'use server'\n\nimport { updateTag } from 'next/cache'\nimport { addPost } from '@/lib/posts'\n\nexport async function createPost(formData: FormData) {\n const title = formData.get('title')\n const content = formData.get('content')\n\n if (typeof title !== 'string' || title.trim() === '') {\n throw new Error('Title is required')\n }\n if (typeof content !== 'string' || content.trim() === '') {\n throw new Error('Content is required')\n }\n\n await addPost(title.trim(), content.trim())\n\n // updateTag expires the 'posts' tag immediately: the next request blocks\n // until fresh data is fetched, so the user never sees the stale list.\n // (revalidateTag would serve stale content while revalidating in the\n // background, which is not acceptable here.)\n updateTag('posts')\n}\n",
+ "_extractedPath": "/workspace/app/actions.ts"
+ }
+ },
+ "raw": {
+ "name": "Write",
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+ "file_path": "/workspace/app/actions.ts",
+ "content": "'use server'\n\nimport { updateTag } from 'next/cache'\nimport { addPost } from '@/lib/posts'\n\nexport async function createPost(formData: FormData) {\n const title = formData.get('title')\n const content = formData.get('content')\n\n if (typeof title !== 'string' || title.trim() === '') {\n throw new Error('Title is required')\n }\n if (typeof content !== 'string' || content.trim() === '') {\n throw new Error('Content is required')\n }\n\n await addPost(title.trim(), content.trim())\n\n // updateTag expires the 'posts' tag immediately: the next request blocks\n // until fresh data is fetched, so the user never sees the stale list.\n // (revalidateTag would serve stale content while revalidating in the\n // background, which is not acceptable here.)\n updateTag('posts')\n}\n"
+ }
+ }
+ },
+ {
+ "timestamp": "2026-06-09T22:48:01.270Z",
+ "type": "tool_result",
+ "tool": {
+ "name": "unknown",
+ "originalName": "toolu_015c6mwXrbbkBo2o5Q4LkWSv",
+ "result": "File created successfully at: /workspace/app/actions.ts (file state is current in your context — no need to Read it back)",
+ "success": true
+ },
+ "raw": {
+ "tool_use_id": "toolu_015c6mwXrbbkBo2o5Q4LkWSv",
+ "type": "tool_result",
+ "content": "File created successfully at: /workspace/app/actions.ts (file state is current in your context — no need to Read it back)"
+ }
+ },
+ {
+ "timestamp": "2026-06-09T22:48:07.863Z",
+ "type": "tool_call",
+ "tool": {
+ "name": "file_write",
+ "originalName": "Write",
+ "args": {
+ "file_path": "/workspace/app/page.tsx",
+ "content": "import { Suspense } from 'react'\nimport { createPost } from './actions'\nimport { getPosts } from '@/lib/posts'\n\nasync function PostsList() {\n const posts = await getPosts()\n\n if (posts.length === 0) {\n return No posts yet.
\n }\n\n return (\n \n {posts.map((post) => (\n \n {post.title} : {post.content}\n \n ))}\n \n )\n}\n\nexport default function Home() {\n return (\n \n Posts \n Loading posts…}>\n \n \n \n \n \n Create post \n \n \n )\n}\n",
+ "_extractedPath": "/workspace/app/page.tsx"
+ }
+ },
+ "raw": {
+ "name": "Write",
+ "input": {
+ "file_path": "/workspace/app/page.tsx",
+ "content": "import { Suspense } from 'react'\nimport { createPost } from './actions'\nimport { getPosts } from '@/lib/posts'\n\nasync function PostsList() {\n const posts = await getPosts()\n\n if (posts.length === 0) {\n return No posts yet.
\n }\n\n return (\n \n {posts.map((post) => (\n \n {post.title} : {post.content}\n \n ))}\n \n )\n}\n\nexport default function Home() {\n return (\n \n Posts \n Loading posts…}>\n \n \n \n \n \n Create post \n \n \n )\n}\n"
+ }
+ }
+ },
+ {
+ "timestamp": "2026-06-09T22:48:07.867Z",
+ "type": "tool_result",
+ "tool": {
+ "name": "unknown",
+ "originalName": "toolu_019wqK84Da7WcxQUSKFJBrPA",
+ "result": "The file /workspace/app/page.tsx has been updated successfully. (file state is current in your context — no need to Read it back)",
+ "success": true
+ },
+ "raw": {
+ "tool_use_id": "toolu_019wqK84Da7WcxQUSKFJBrPA",
+ "type": "tool_result",
+ "content": "The file /workspace/app/page.tsx has been updated successfully. (file state is current in your context — no need to Read it back)"
+ }
+ },
+ {
+ "timestamp": "2026-06-09T22:48:12.044Z",
+ "type": "tool_call",
+ "tool": {
+ "name": "shell",
+ "originalName": "Bash",
+ "args": {
+ "command": "npx tsc --noEmit 2>&1 | head -20",
+ "description": "Type-check the project",
+ "_extractedCommand": "npx tsc --noEmit 2>&1 | head -20"
+ }
+ },
+ "raw": {
+ "name": "Bash",
+ "input": {
+ "command": "npx tsc --noEmit 2>&1 | head -20",
+ "description": "Type-check the project"
+ }
+ }
+ },
+ {
+ "timestamp": "2026-06-09T22:48:13.981Z",
+ "type": "tool_result",
+ "tool": {
+ "name": "unknown",
+ "originalName": "toolu_01E4MPocP6wDvPAk32i9Q7qf",
+ "result": "(Bash completed with no output)",
+ "success": true
+ },
+ "raw": {
+ "tool_use_id": "toolu_01E4MPocP6wDvPAk32i9Q7qf",
+ "type": "tool_result",
+ "content": "(Bash completed with no output)",
+ "is_error": false
+ }
+ },
+ {
+ "timestamp": "2026-06-09T22:48:17.264Z",
+ "type": "tool_call",
+ "tool": {
+ "name": "shell",
+ "originalName": "Bash",
+ "args": {
+ "command": "npm run build 2>&1 | tail -25",
+ "description": "Build the Next.js app to verify",
+ "_extractedCommand": "npm run build 2>&1 | tail -25"
+ }
+ },
+ "raw": {
+ "name": "Bash",
+ "input": {
+ "command": "npm run build 2>&1 | tail -25",
+ "description": "Build the Next.js app to verify"
+ }
+ }
+ },
+ {
+ "timestamp": "2026-06-09T22:48:25.967Z",
+ "type": "tool_result",
+ "tool": {
+ "name": "unknown",
+ "originalName": "toolu_01SgWgoy1ycKspQyUvqXoQCq",
+ "result": "✓ Compiled successfully in 4.7s\n Running TypeScript ...\n\n We detected TypeScript in your project and reconfigured your tsconfig.json file for you.\n The following suggested values were added to your tsconfig.json. These values can be changed to fit your project's needs:\n\n \t- include was updated to add '.next/dev/types/**/*.ts'\n\n The following mandatory changes were made to your tsconfig.json:\n\n \t- jsx was set to react-jsx (next.js uses the React automatic runtime)\n\n Finished TypeScript in 1695ms ...\n Collecting page data using 1 worker ...\n Generating static pages using 1 worker (0/3) ...\n✓ Generating static pages using 1 worker (3/3) in 141ms\n Finalizing page optimization ...\n\nRoute (app) Revalidate Expire\n┌ ○ / 15m 1y\n└ ○ /_not-found\n\n\n○ (Static) prerendered as static content",
+ "success": true
+ },
+ "raw": {
+ "tool_use_id": "toolu_01SgWgoy1ycKspQyUvqXoQCq",
+ "type": "tool_result",
+ "content": "✓ Compiled successfully in 4.7s\n Running TypeScript ...\n\n We detected TypeScript in your project and reconfigured your tsconfig.json file for you.\n The following suggested values were added to your tsconfig.json. These values can be changed to fit your project's needs:\n\n \t- include was updated to add '.next/dev/types/**/*.ts'\n\n The following mandatory changes were made to your tsconfig.json:\n\n \t- jsx was set to react-jsx (next.js uses the React automatic runtime)\n\n Finished TypeScript in 1695ms ...\n Collecting page data using 1 worker ...\n Generating static pages using 1 worker (0/3) ...\n✓ Generating static pages using 1 worker (3/3) in 141ms\n Finalizing page optimization ...\n\nRoute (app) Revalidate Expire\n┌ ○ / 15m 1y\n└ ○ /_not-found\n\n\n○ (Static) prerendered as static content",
+ "is_error": false
+ }
+ },
+ {
+ "timestamp": "2026-06-09T22:48:35.629Z",
+ "type": "message",
+ "role": "assistant",
+ "content": "Done — the build passes and types check. The Server Action is in place with guaranteed-fresh cache invalidation.\n\nThe critical detail: in this Next.js version (16.3 canary), `revalidateTag` has changed semantics — with the recommended `profile=\"max\"` it serves **stale content** while refetching in the background, which would violate your requirement. The docs in `node_modules/next/dist/docs/` point to **`updateTag`** for exactly this read-your-own-writes case: it expires the tag immediately, and the next request blocks until fresh data is fetched, so the user never sees the old list.\n\nWhat I created:\n\n- **`app/actions.ts`** — the `createPost` Server Action. It validates the form fields, persists the post, then calls `updateTag('posts')`.\n- **`lib/posts.ts`** — a small data layer (in-memory store standing in for a database) where `getPosts()` is cached via the `'use cache'` directive and tagged with `cacheTag('posts')`.\n- **`app/page.tsx`** — renders the cached posts list (in a `Suspense` boundary, required for dynamic content under Cache Components) plus a form wired to the action.\n- **`next.config.ts`** — enabled `cacheComponents: true`, which `'use cache'` and `cacheTag` require.\n\nOne caveat worth knowing: `updateTag` only works inside Server Actions. If you ever need to invalidate this tag from a Route Handler (e.g. a webhook) with the same no-stale guarantee, the documented pattern there is `revalidateTag('posts', { expire: 0 })`.",
+ "raw": {
+ "parentUuid": "4a2fb49d-83e0-40d6-b703-bb294b7ee69f",
+ "isSidechain": false,
+ "message": {
+ "id": "gen_01KTQ958N10RNA2BNQ304DD5B3",
+ "type": "message",
+ "role": "assistant",
+ "content": [
+ {
+ "type": "text",
+ "text": "Done — the build passes and types check. The Server Action is in place with guaranteed-fresh cache invalidation.\n\nThe critical detail: in this Next.js version (16.3 canary), `revalidateTag` has changed semantics — with the recommended `profile=\"max\"` it serves **stale content** while refetching in the background, which would violate your requirement. The docs in `node_modules/next/dist/docs/` point to **`updateTag`** for exactly this read-your-own-writes case: it expires the tag immediately, and the next request blocks until fresh data is fetched, so the user never sees the old list.\n\nWhat I created:\n\n- **`app/actions.ts`** — the `createPost` Server Action. It validates the form fields, persists the post, then calls `updateTag('posts')`.\n- **`lib/posts.ts`** — a small data layer (in-memory store standing in for a database) where `getPosts()` is cached via the `'use cache'` directive and tagged with `cacheTag('posts')`.\n- **`app/page.tsx`** — renders the cached posts list (in a `Suspense` boundary, required for dynamic content under Cache Components) plus a form wired to the action.\n- **`next.config.ts`** — enabled `cacheComponents: true`, which `'use cache'` and `cacheTag` require.\n\nOne caveat worth knowing: `updateTag` only works inside Server Actions. If you ever need to invalidate this tag from a Route Handler (e.g. a webhook) with the same no-stale guarantee, the documented pattern there is `revalidateTag('posts', { expire: 0 })`."
+ }
+ ],
+ "model": "claude-fable-5",
+ "stop_reason": "end_turn",
+ "stop_sequence": null,
+ "usage": {
+ "input_tokens": 2,
+ "cache_creation_input_tokens": 419,
+ "cache_read_input_tokens": 42783,
+ "output_tokens": 558,
+ "server_tool_use": {
+ "web_search_requests": 0,
+ "web_fetch_requests": 0
+ },
+ "service_tier": "standard",
+ "cache_creation": {
+ "ephemeral_1h_input_tokens": 0,
+ "ephemeral_5m_input_tokens": 419
+ },
+ "inference_geo": "",
+ "iterations": [],
+ "speed": "standard"
+ },
+ "stop_details": null
+ },
+ "type": "assistant",
+ "uuid": "ac0a35a7-26c7-4d88-b598-a3de7d7cb041",
+ "timestamp": "2026-06-09T22:48:35.629Z",
+ "userType": "external",
+ "entrypoint": "sdk-cli",
+ "cwd": "/workspace",
+ "sessionId": "fae4cdeb-bff1-4f03-bf61-c65b95655a73",
+ "version": "2.1.170",
+ "gitBranch": "master"
+ }
+ }
+ ],
+ "summary": {
+ "totalTurns": 3,
+ "toolCalls": {
+ "file_read": 5,
+ "file_write": 3,
+ "file_edit": 1,
+ "shell": 6,
+ "web_fetch": 0,
+ "web_search": 0,
+ "glob": 0,
+ "grep": 0,
+ "list_dir": 0,
+ "agent_task": 0,
+ "unknown": 0
+ },
+ "totalToolCalls": 15,
+ "webFetches": [],
+ "filesRead": [
+ "/workspace/node_modules/next/dist/docs/01-app/03-api-reference/04-functions/revalidateTag.md",
+ "/workspace/node_modules/next/dist/docs/01-app/03-api-reference/04-functions/updateTag.md",
+ "/workspace/app/page.tsx",
+ "/workspace/app/layout.tsx",
+ "/workspace/next.config.ts"
+ ],
+ "filesModified": [
+ "/workspace/next.config.ts",
+ "/workspace/lib/posts.ts",
+ "/workspace/app/actions.ts",
+ "/workspace/app/page.tsx"
+ ],
+ "shellCommands": [
+ {
+ "command": "ls /workspace/node_modules/next/dist/docs/ | head -50",
+ "success": true
+ },
+ {
+ "command": "grep -rl \"expireTag\\|revalidateTag\" /workspace/node_modules/next/dist/docs/01-app --include=\"*.md*\" | head -20",
+ "success": true
+ },
+ {
+ "command": "find /workspace -path /workspace/node_modules -prune -o -type f -print | head -40 && echo --- && cat /workspace/package.json",
+ "success": true
+ },
+ {
+ "command": "grep -n \"cacheComponents\" /workspace/node_modules/next/dist/docs/01-app/03-api-reference/04-functions/cacheTag.md | head; grep -rn \"cacheComponents\" /workspace/node_modules/next/dist/docs/01-app/03-api-reference/04-functions/updateTag.md | head; grep -n \"cacheComponents\" /workspace/node_modules/next/dist/docs/01-app/03-api-reference/01-directives/use-cache.md | head",
+ "success": true
+ },
+ {
+ "command": "npx tsc --noEmit 2>&1 | head -20",
+ "success": true
+ },
+ {
+ "command": "npm run build 2>&1 | tail -25",
+ "success": true
+ }
+ ],
+ "errors": [],
+ "thinkingBlocks": 0
+ },
+ "parseSuccess": true
+}
\ No newline at end of file
diff --git a/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-037-updatetag-cache/summary.json b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-037-updatetag-cache/summary.json
new file mode 100644
index 000000000..d4f3669c5
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-037-updatetag-cache/summary.json
@@ -0,0 +1,7 @@
+{
+ "totalRuns": 1,
+ "passedRuns": 1,
+ "passRate": "100%",
+ "meanDuration": 203.175,
+ "fingerprint": "599df8b38ef4c8562da2a3fa4096c5fd665e807ffac54d784e76e79328cc94a1"
+}
\ No newline at end of file
diff --git a/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-038-refresh-settings/run-1/outputs/eval.txt b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-038-refresh-settings/run-1/outputs/eval.txt
new file mode 100644
index 000000000..5dfb6bbd5
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-038-refresh-settings/run-1/outputs/eval.txt
@@ -0,0 +1,10 @@
+
+ RUN v3.2.6 /workspace
+
+ ✓ EVAL.ts (6 tests) 6ms
+
+ Test Files 1 passed (1)
+ Tests 6 passed (6)
+ Start at 22:53:35
+ Duration 226ms (transform 33ms, setup 0ms, collect 27ms, tests 6ms, environment 0ms, prepare 64ms)
+
diff --git a/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-038-refresh-settings/run-1/outputs/scripts/build.txt b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-038-refresh-settings/run-1/outputs/scripts/build.txt
new file mode 100644
index 000000000..fc0d9da48
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-038-refresh-settings/run-1/outputs/scripts/build.txt
@@ -0,0 +1,22 @@
+
+> build
+> next build
+
+▲ Next.js 16.3.0-canary.46 (Turbopack)
+
+ Creating an optimized production build ...
+✓ Compiled successfully in 4.4s
+ Running TypeScript ...
+ Finished TypeScript in 1865ms ...
+ Collecting page data using 1 worker ...
+ Generating static pages using 1 worker (0/3) ...
+✓ Generating static pages using 1 worker (3/3) in 106ms
+ Finalizing page optimization ...
+
+Route (app)
+┌ ○ /
+└ ○ /_not-found
+
+
+○ (Static) prerendered as static content
+
diff --git a/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-038-refresh-settings/run-1/result.json b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-038-refresh-settings/run-1/result.json
new file mode 100644
index 000000000..735a34f86
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-038-refresh-settings/run-1/result.json
@@ -0,0 +1,98 @@
+{
+ "status": "passed",
+ "duration": 295.424,
+ "model": "claude-fable-5",
+ "transcriptPath": "./transcript.json",
+ "transcriptRawPath": "./transcript-raw.jsonl",
+ "o11y": {
+ "totalTurns": 5,
+ "toolCalls": {
+ "file_read": 3,
+ "file_write": 4,
+ "file_edit": 0,
+ "shell": 13,
+ "web_fetch": 0,
+ "web_search": 0,
+ "glob": 0,
+ "grep": 0,
+ "list_dir": 0,
+ "agent_task": 0,
+ "unknown": 0
+ },
+ "totalToolCalls": 20,
+ "webFetches": [],
+ "filesRead": [
+ "/workspace/node_modules/next/dist/docs/01-app/03-api-reference/04-functions/refresh.md",
+ "/workspace/node_modules/next/dist/docs/01-app/01-getting-started/07-mutating-data.md",
+ "/workspace/app/page.tsx"
+ ],
+ "filesModified": [
+ "/workspace/app/lib/preferences.ts",
+ "/workspace/app/actions.ts",
+ "/workspace/app/page.tsx",
+ "/workspace/app/layout.tsx"
+ ],
+ "shellCommands": [
+ {
+ "command": "ls /workspace/node_modules/next/dist/docs/ | head -50",
+ "success": true
+ },
+ {
+ "command": "find /workspace/node_modules/next/dist/docs/01-app -iname \"*server-action*\" -o -iname \"*revalidate*\" -o -iname \"*refresh*\" | head -20",
+ "success": true
+ },
+ {
+ "command": "grep -il \"deprecat\" /workspace/node_modules/next/dist/docs/01-app/03-api-reference/04-functions/revalidatePath.md /workspace/node_modules/next/dist/docs/01-app/03-api-reference/04-functions/revalidateTag.md; find /workspace/node_modules/next/dist/docs/01-app -ipath \"*mutating*\"",
+ "success": true
+ },
+ {
+ "command": "ls /workspace; ls /workspace/app 2>/dev/null || ls /workspace/src 2>/dev/null",
+ "success": true
+ },
+ {
+ "command": "find /workspace/app -type f | head -20; echo ---; cat /workspace/page.tsx 2>/dev/null; echo ---; cat /workspace/package.json",
+ "success": true
+ },
+ {
+ "command": "grep -o \"refresh\" /workspace/node_modules/next/cache.d.ts /workspace/node_modules/next/cache.js 2>/dev/null | sort -u; ls /workspace/node_modules/next/cache.*",
+ "success": true
+ },
+ {
+ "command": "cat /workspace/tsconfig.json; ls /workspace/app",
+ "success": true
+ },
+ {
+ "command": "npx next build 2>&1 | tail -25",
+ "success": true
+ },
+ {
+ "command": "(npx next start -p 3456 &>/tmp/next.log &) && sleep 4 && curl -s http://localhost:3456/ | grep -o \"Notifications are currently.*\" | head -c 300",
+ "success": true
+ },
+ {
+ "command": "ACTION_ID=$(curl -s http://localhost:3456/ | grep -oE '\"\\$ACTION_ID_[a-f0-9]+\"' | head -1 | tr -d '\"' | sed 's/\\$ACTION_ID_//') && echo \"action: $ACTION_ID\" && curl -s -X POST http://localhost:3456/ -H \"Next-Action: $ACTION_ID\" -H \"Content-Type: application/x-www-form-urlencoded\" -d \"\" -o /dev/null -w \"POST status: %{http_code}\\n\" && curl -s http://localhost:3456/ | grep -o \"[a-z]* \"",
+ "success": true
+ },
+ {
+ "command": "ACTION_ID=$(curl -s http://localhost:3456/ | grep -oE '\"\\$ACTION_ID_[a-f0-9]+\"' | head -1 | tr -d '\"') && curl -s -X POST http://localhost:3456/ -F \"${ACTION_ID}=\" -o /dev/null -w \"POST status: %{http_code}\\n\" && curl -s http://localhost:3456/ | grep -o \"[a-z]* \"",
+ "success": true
+ },
+ {
+ "command": "ACTION_ID=$(curl -s http://localhost:3456/ | grep -oE '\"\\$ACTION_ID_[a-f0-9]+\"' | head -1 | tr -d '\"') && curl -s -X POST http://localhost:3456/ -F \"${ACTION_ID}=\" | grep -oE \"Notifications are currently|(on|off) |notifications (on|off)\" | sort | uniq -c",
+ "success": true
+ },
+ {
+ "command": "ACTION_ID=$(curl -s http://localhost:3456/ | grep -oE '\"\\$ACTION_ID_[a-f0-9]+\"' | head -1 | tr -d '\"') && curl -s -X POST http://localhost:3456/ -F \"${ACTION_ID}=\" | grep -oE \"(on|off) \"; pkill -f \"next start\" ",
+ "success": false
+ }
+ ],
+ "errors": [],
+ "thinkingBlocks": 0
+ },
+ "outputPaths": {
+ "eval": "./outputs/eval.txt",
+ "scripts": {
+ "build": "./outputs/scripts/build.txt"
+ }
+ }
+}
\ No newline at end of file
diff --git a/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-038-refresh-settings/run-1/transcript-raw.jsonl b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-038-refresh-settings/run-1/transcript-raw.jsonl
new file mode 100644
index 000000000..a6207ca4b
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-038-refresh-settings/run-1/transcript-raw.jsonl
@@ -0,0 +1,75 @@
+{"type":"queue-operation","operation":"enqueue","timestamp":"2026-06-09T22:50:31.285Z","sessionId":"91078601-dd57-4528-ac55-1aa142025ce5","content":"Create a Server Action that toggles a user's notification preference (on/off). After toggling, the current page should refresh to show the updated preference WITHOUT redirecting to a different page. Use Next.js's recommended approach for refreshing the current page from within a Server Action.\n"}
+{"type":"queue-operation","operation":"dequeue","timestamp":"2026-06-09T22:50:31.285Z","sessionId":"91078601-dd57-4528-ac55-1aa142025ce5"}
+{"parentUuid":null,"isSidechain":false,"promptId":"2d48cafe-e995-4ebf-9481-093dea058d40","type":"user","message":{"role":"user","content":"Create a Server Action that toggles a user's notification preference (on/off). After toggling, the current page should refresh to show the updated preference WITHOUT redirecting to a different page. Use Next.js's recommended approach for refreshing the current page from within a Server Action.\n"},"uuid":"0b6714dc-c3a6-477e-8912-9adda62d4038","timestamp":"2026-06-09T22:50:31.347Z","permissionMode":"bypassPermissions","promptSource":"sdk","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"91078601-dd57-4528-ac55-1aa142025ce5","version":"2.1.170","gitBranch":"master"}
+{"parentUuid":"0b6714dc-c3a6-477e-8912-9adda62d4038","isSidechain":false,"attachment":{"type":"skill_listing","content":"- deep-research: Deep research harness — fan-out web searches, fetch sources, adversarially verify claims, synthesize a cited report. - When the user wants a deep, multi-source, fact-checked research report on any topic. BEFORE invoking, check if the question is specific enough to research directly — if underspecified (e.g., \"what car to buy\" without budget/use-case/region), ask 2-3 clarifying questions to narrow scope. Then pass the refined question as args, weaving the answers in.\n- update-config: Use this skill to configure the Claude Code harness via settings.json. Automated behaviors (\"from now on when X\", \"each time X\", \"whenever X\", \"before/after X\") require hooks configured in settings.json - the harness executes these, not Claude, so memory/preferences cannot fulfill them. Also use for: permissions (\"allow X\", \"add permission\", \"move permission to\"), env vars (\"set X=Y\"), hook troubleshooting, or any changes to settings.json/settings.local.json files. Examples: \"allow npm commands\", \"add bq permission to global settings\", \"move permission to user settings\", \"set DEBUG=true\", \"when claude stops show X\". For simple settings like theme/model, suggest the /config command.\n- keybindings-help: Use when the user wants to customize keyboard shortcuts, rebind keys, add chord bindings, or modify ~/.claude/keybindings.json. Examples: \"rebind ctrl+s\", \"add a chord shortcut\", \"change the submit key\", \"customize keybindings\".\n- verify: Verify that a code change actually does what it's supposed to by running the app and observing behavior. Use when asked to verify a PR, confirm a fix works, test a change manually, check that a feature works, or validate local changes before pushing.\n- code-review: Review the current diff for correctness bugs and reuse/simplification/efficiency cleanups at the given effort level (low/medium: fewer, high-confidence findings; high→max: broader coverage, may include uncertain findings). Pass --comment to post findings as inline PR comments, or --fix to apply the findings to the working tree after the review.\n- simplify: Review the changed code for reuse, simplification, efficiency, and altitude cleanups, then apply the fixes. Quality only — it does not hunt for bugs; use /code-review for that.\n- fewer-permission-prompts: Scan your transcripts for common read-only Bash and MCP tool calls, then add a prioritized allowlist to project .claude/settings.json to reduce permission prompts.\n- loop: Run a prompt or slash command on a recurring interval (e.g. /loop 5m /foo, defaults to 10m) - When the user wants to set up a recurring task, poll for status, or run something repeatedly on an interval (e.g. \"check the deploy every 5 minutes\", \"keep running /babysit-prs\"). Do NOT invoke for one-off tasks.\n- claude-api: Reference for the Claude API / Anthropic SDK — model ids, pricing, params, streaming, tool use, MCP, agents, caching, token counting, model migration.\nTRIGGER — read BEFORE opening the target file; don't skip because it \"looks like a one-liner\" — whenever: the prompt names Claude/Anthropic in any form (Claude, Anthropic, Fable, Opus, Sonnet, Haiku, `anthropic`, `@anthropic-ai`, `claude-*`, `us.anthropic.*`, `[1m]`); the user asks about an LLM (pricing/model choice/limits/caching) — never answer from memory; OR the task is LLM-shaped with provider unstated (agent/MCP/tool-definition/multi-agent/RAG/LLM-judge/computer-use; generate/summarize/extract/classify/rewrite/converse over NL; debugging refusals/cutoffs/streaming/tool-calls/tokens).\nSKIP only when another provider is being worked on (overrides all triggers): OpenAI/GPT/Gemini/Llama/Mistral/Cohere/Ollama named in the query; OR `grep -rE 'openai|langchain_openai|google.generativeai|genai|mistralai|cohere|ollama'` over the project hits (run this grep FIRST if no provider named — don't Read the file).\n- run: Launch and drive this project's app to see a change working. Use when asked to run, start, or screenshot the app, or to confirm a change works in the real app (not just tests). First looks for a project skill that already covers launching the app; otherwise falls back to built-in patterns per project type (CLI, server, TUI, Electron, browser-driven, library).\n- init: Initialize a new CLAUDE.md file with codebase documentation\n- review: Review a pull request\n- security-review: Complete a security review of the pending changes on the current branch","skillCount":13,"isInitial":true,"names":["deep-research","update-config","keybindings-help","verify","code-review","simplify","fewer-permission-prompts","loop","claude-api","run","init","review","security-review"]},"type":"attachment","uuid":"c48e0ca9-ca4a-47ff-b9d6-e577c1bea43f","timestamp":"2026-06-09T22:50:31.347Z","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"91078601-dd57-4528-ac55-1aa142025ce5","version":"2.1.170","gitBranch":"master"}
+{"type":"ai-title","aiTitle":"Toggle notification preference Server Action","sessionId":"91078601-dd57-4528-ac55-1aa142025ce5"}
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+{"parentUuid":"c15a7306-cb15-49d3-838e-ac2c1f1c9d04","isSidechain":false,"promptId":"2d48cafe-e995-4ebf-9481-093dea058d40","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01KTywe6j5mK6LRiPFRpB3Yg","type":"tool_result","content":"1\t---\n2\ttitle: refresh\n3\tdescription: API Reference for the refresh function.\n4\t---\n5\t\n6\t`refresh` allows you to refresh the client router from within a [Server Action](/docs/app/getting-started/mutating-data).\n7\t\n8\t## Usage\n9\t\n10\t`refresh` can **only** be called from within Server Actions. It cannot be used in Route Handlers, Client Components, or any other context.\n11\t\n12\t## Parameters\n13\t\n14\t```tsx\n15\trefresh(): void;\n16\t```\n17\t\n18\t## Returns\n19\t\n20\t`refresh` does not return a value.\n21\t\n22\t## Examples\n23\t\n24\t```ts filename=\"app/actions.ts\" switcher\n25\t'use server'\n26\t\n27\timport { refresh } from 'next/cache'\n28\t\n29\texport async function createPost(formData: FormData) {\n30\t const title = formData.get('title')\n31\t const content = formData.get('content')\n32\t\n33\t // Create the post in your database\n34\t const post = await db.post.create({\n35\t data: { title, content },\n36\t })\n37\t\n38\t refresh()\n39\t}\n40\t```\n41\t\n42\t```js filename=\"app/actions.js\" switcher\n43\t'use server'\n44\t\n45\timport { refresh } from 'next/cache'\n46\t\n47\texport async function createPost(formData) {\n48\t const title = formData.get('title')\n49\t const content = formData.get('content')\n50\t\n51\t // Create the post in your database\n52\t const post = await db.post.create({\n53\t data: { title, content },\n54\t })\n55\t\n56\t refresh()\n57\t}\n58\t```\n59\t\n60\t### Error when used outside Server Actions\n61\t\n62\t```ts filename=\"app/api/posts/route.ts\" switcher\n63\timport { refresh } from 'next/cache'\n64\t\n65\texport async function POST() {\n66\t // This will throw an error\n67\t refresh()\n68\t}\n69\t```\n70\t"}]},"uuid":"5783be4c-f6e6-4fdc-a0a6-d3f1f107be65","timestamp":"2026-06-09T22:50:45.847Z","toolUseResult":{"type":"text","file":{"filePath":"/workspace/node_modules/next/dist/docs/01-app/03-api-reference/04-functions/refresh.md","content":"---\ntitle: refresh\ndescription: API Reference for the refresh function.\n---\n\n`refresh` allows you to refresh the client router from within a [Server Action](/docs/app/getting-started/mutating-data).\n\n## Usage\n\n`refresh` can **only** be called from within Server Actions. It cannot be used in Route Handlers, Client Components, or any other context.\n\n## Parameters\n\n```tsx\nrefresh(): void;\n```\n\n## Returns\n\n`refresh` does not return a value.\n\n## Examples\n\n```ts filename=\"app/actions.ts\" switcher\n'use server'\n\nimport { refresh } from 'next/cache'\n\nexport async function createPost(formData: FormData) {\n const title = formData.get('title')\n const content = formData.get('content')\n\n // Create the post in your database\n const post = await db.post.create({\n data: { title, content },\n })\n\n refresh()\n}\n```\n\n```js filename=\"app/actions.js\" switcher\n'use server'\n\nimport { refresh } from 'next/cache'\n\nexport async function createPost(formData) {\n const title = formData.get('title')\n const content = formData.get('content')\n\n // Create the post in your database\n const post = await db.post.create({\n data: { title, content },\n })\n\n refresh()\n}\n```\n\n### Error when used outside Server Actions\n\n```ts filename=\"app/api/posts/route.ts\" switcher\nimport { refresh } from 'next/cache'\n\nexport async function POST() {\n // This will throw an error\n refresh()\n}\n```\n","numLines":70,"startLine":1,"totalLines":70}},"sourceToolAssistantUUID":"c15a7306-cb15-49d3-838e-ac2c1f1c9d04","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"91078601-dd57-4528-ac55-1aa142025ce5","version":"2.1.170","gitBranch":"master"}
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+{"parentUuid":"21ac9ad0-9e82-43de-ab08-3209c08610ca","isSidechain":false,"promptId":"2d48cafe-e995-4ebf-9481-093dea058d40","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_013jpdyBKSPQT9UYtUuyqoAw","type":"tool_result","content":"1\t---\n2\ttitle: Mutating Data\n3\tdescription: Learn how to mutate data using Server Functions and Server Actions in Next.js.\n4\trelated:\n5\t title: API Reference\n6\t description: Learn more about the features mentioned in this page by reading the API Reference.\n7\t links:\n8\t - app/api-reference/functions/revalidatePath\n9\t - app/api-reference/functions/revalidateTag\n10\t - app/api-reference/functions/redirect\n11\t---\n12\t\n13\tYou can mutate data in Next.js using [React Server Functions](https://react.dev/reference/rsc/server-functions). This page will go through how you can [create](#creating-server-functions) and [invoke](#invoking-server-functions) Server Functions.\n14\t\n15\t## What are Server Functions?\n16\t\n17\tA **Server Function** is an asynchronous function that runs on the server. You can call them from the client through a network request, which is why they must be asynchronous.\n18\t\n19\tIn an `action` or mutation context, they are also called **Server Actions**.\n20\t\n21\tBy convention, a Server Action is an async function used with [`startTransition`](https://react.dev/reference/react/startTransition). This happens automatically when the function is:\n22\t\n23\t- Passed to a `` using the `action` prop.\n24\t- Passed to a `` using the `formAction` prop.\n25\t\n26\tWhen an action is invoked, Next.js can return both the updated UI and new data in a single server roundtrip.\n27\t\n28\tBehind the scenes, actions use the `POST` method, and only this HTTP method can invoke them.\n29\t\n30\t> [!WARNING]\n31\t> Server Functions are reachable via direct POST requests, not just through your application's UI. Always verify authentication and authorization inside every Server Function. See the [Data Security guide](/docs/app/guides/data-security#authentication-and-authorization) for recommended patterns.\n32\t\n33\t> **Good to know:** A Server Action is a Server Function used in a specific way (for handling form submissions and mutations). Server Function is the broader term.\n34\t\n35\t## Creating Server Functions\n36\t\n37\tA Server Function can be defined by using the [`use server`](https://react.dev/reference/rsc/use-server) directive. You can place the directive at the top of an **asynchronous** function to mark the function as a Server Function, or at the top of a separate file to mark all exports of that file.\n38\t\n39\t```ts filename=\"app/lib/actions.ts\" switcher\n40\timport { auth } from '@/lib/auth'\n41\t\n42\texport async function createPost(formData: FormData) {\n43\t 'use server'\n44\t const session = await auth()\n45\t if (!session?.user) {\n46\t throw new Error('Unauthorized')\n47\t }\n48\t\n49\t const title = formData.get('title')\n50\t const content = formData.get('content')\n51\t\n52\t // Mutate data\n53\t // Revalidate cache\n54\t}\n55\t\n56\texport async function deletePost(formData: FormData) {\n57\t 'use server'\n58\t const session = await auth()\n59\t if (!session?.user) {\n60\t throw new Error('Unauthorized')\n61\t }\n62\t\n63\t const id = formData.get('id')\n64\t\n65\t // Verify the user owns this resource before deleting\n66\t // Mutate data\n67\t // Revalidate cache\n68\t}\n69\t```\n70\t\n71\t```js filename=\"app/lib/actions.js\" switcher\n72\timport { auth } from '@/lib/auth'\n73\t\n74\texport async function createPost(formData) {\n75\t 'use server'\n76\t const session = await auth()\n77\t if (!session?.user) {\n78\t throw new Error('Unauthorized')\n79\t }\n80\t\n81\t const title = formData.get('title')\n82\t const content = formData.get('content')\n83\t\n84\t // Mutate data\n85\t // Revalidate cache\n86\t}\n87\t\n88\texport async function deletePost(formData) {\n89\t 'use server'\n90\t const session = await auth()\n91\t if (!session?.user) {\n92\t throw new Error('Unauthorized')\n93\t }\n94\t\n95\t const id = formData.get('id')\n96\t\n97\t // Verify the user owns this resource before deleting\n98\t // Mutate data\n99\t // Revalidate cache\n100\t}\n101\t```\n102\t\n103\t### Server Components\n104\t\n105\tServer Functions can be inlined in Server Components by adding the `\"use server\"` directive to the top of the function body:\n106\t\n107\t```tsx filename=\"app/page.tsx\" switcher\n108\texport default function Page() {\n109\t // Server Action\n110\t async function createPost(formData: FormData) {\n111\t 'use server'\n112\t // ...\n113\t }\n114\t\n115\t return <>>\n116\t}\n117\t```\n118\t\n119\t```jsx filename=\"app/page.js\" switcher\n120\texport default function Page() {\n121\t // Server Action\n122\t async function createPost(formData) {\n123\t 'use server'\n124\t // ...\n125\t }\n126\t\n127\t return <>>\n128\t}\n129\t```\n130\t\n131\t> **Good to know:** Server Components support progressive enhancement by default, meaning forms that call Server Actions will be submitted even if JavaScript hasn't loaded yet or is disabled.\n132\t\n133\t### Client Components\n134\t\n135\tIt's not possible to define Server Functions in Client Components. However, you can invoke them in Client Components by importing them from a file that has the `\"use server\"` directive at the top of it:\n136\t\n137\t```ts filename=\"app/actions.ts\" switcher\n138\t'use server'\n139\t\n140\texport async function createPost() {}\n141\t```\n142\t\n143\t```js filename=\"app/actions.js\" switcher\n144\t'use server'\n145\t\n146\texport async function createPost() {}\n147\t```\n148\t\n149\t```tsx filename=\"app/ui/button.tsx\" switcher\n150\t'use client'\n151\t\n152\timport { createPost } from '@/app/actions'\n153\t\n154\texport function Button() {\n155\t return Create \n156\t}\n157\t```\n158\t\n159\t```jsx filename=\"app/ui/button.js\" switcher\n160\t'use client'\n161\t\n162\timport { createPost } from '@/app/actions'\n163\t\n164\texport function Button() {\n165\t return Create \n166\t}\n167\t```\n168\t\n169\t> **Good to know:** In Client Components, forms invoking Server Actions will queue submissions if JavaScript isn't loaded yet, and will be prioritized for hydration. After hydration, the browser does not refresh on form submission.\n170\t\n171\t### Passing actions as props\n172\t\n173\tYou can also pass an action to a Client Component as a prop:\n174\t\n175\t```jsx\n176\t \n177\t```\n178\t\n179\t```tsx filename=\"app/client-component.tsx\" switcher\n180\t'use client'\n181\t\n182\texport default function ClientComponent({\n183\t updateItemAction,\n184\t}: {\n185\t updateItemAction: (formData: FormData) => void\n186\t}) {\n187\t return {/* ... */} \n188\t}\n189\t```\n190\t\n191\t```jsx filename=\"app/client-component.js\" switcher\n192\t'use client'\n193\t\n194\texport default function ClientComponent({ updateItemAction }) {\n195\t return {/* ... */} \n196\t}\n197\t```\n198\t\n199\t## Invoking Server Functions\n200\t\n201\tThere are two main ways you can invoke a Server Function:\n202\t\n203\t1. [Forms](#forms) in Server and Client Components\n204\t2. [Event Handlers](#event-handlers) and [useEffect](#useeffect) in Client Components\n205\t\n206\t> **Good to know:** Server Functions are designed for server-side mutations. The client currently dispatches and awaits them one at a time. This is an implementation detail and may change. If you need parallel data fetching, use [data fetching](/docs/app/getting-started/fetching-data#server-components) in Server Components, or perform parallel work inside a single Server Function or [Route Handler](/docs/app/guides/backend-for-frontend#manipulating-data).\n207\t\n208\t### Forms\n209\t\n210\tReact extends the HTML [``](https://react.dev/reference/react-dom/components/form) element to allow a Server Function to be invoked with the HTML `action` prop.\n211\t\n212\tWhen invoked in a form, the function automatically receives the [`FormData`](https://developer.mozilla.org/docs/Web/API/FormData/FormData) object. You can extract the data using the native [`FormData` methods](https://developer.mozilla.org/en-US/docs/Web/API/FormData#instance_methods):\n213\t\n214\t```tsx filename=\"app/ui/form.tsx\" switcher\n215\timport { createPost } from '@/app/actions'\n216\t\n217\texport function Form() {\n218\t return (\n219\t \n220\t \n221\t \n222\t Create \n223\t \n224\t )\n225\t}\n226\t```\n227\t\n228\t```jsx filename=\"app/ui/form.js\" switcher\n229\timport { createPost } from '@/app/actions'\n230\t\n231\texport function Form() {\n232\t return (\n233\t \n234\t \n235\t \n236\t Create \n237\t \n238\t )\n239\t}\n240\t```\n241\t\n242\t```ts filename=\"app/actions.ts\" switcher\n243\t'use server'\n244\t\n245\timport { auth } from '@/lib/auth'\n246\t\n247\texport async function createPost(formData: FormData) {\n248\t const session = await auth()\n249\t if (!session?.user) {\n250\t throw new Error('Unauthorized')\n251\t }\n252\t\n253\t const title = formData.get('title')\n254\t const content = formData.get('content')\n255\t\n256\t // Mutate data\n257\t // Revalidate cache\n258\t}\n259\t```\n260\t\n261\t```js filename=\"app/actions.js\" switcher\n262\t'use server'\n263\t\n264\timport { auth } from '@/lib/auth'\n265\t\n266\texport async function createPost(formData) {\n267\t const session = await auth()\n268\t if (!session?.user) {\n269\t throw new Error('Unauthorized')\n270\t }\n271\t\n272\t const title = formData.get('title')\n273\t const content = formData.get('content')\n274\t\n275\t // Mutate data\n276\t // Revalidate cache\n277\t}\n278\t```\n279\t\n280\t### Event Handlers\n281\t\n282\tYou can invoke a Server Function in a Client Component by using event handlers such as `onClick`.\n283\t\n284\t```tsx filename=\"app/like-button.tsx\" switcher\n285\t'use client'\n286\t\n287\timport { incrementLike } from './actions'\n288\timport { useState } from 'react'\n289\t\n290\texport default function LikeButton({ initialLikes }: { initialLikes: number }) {\n291\t const [likes, setLikes] = useState(initialLikes)\n292\t\n293\t return (\n294\t <>\n295\t Total Likes: {likes}
\n296\t {\n298\t const updatedLikes = await incrementLike()\n299\t setLikes(updatedLikes)\n300\t }}\n301\t >\n302\t Like\n303\t \n304\t >\n305\t )\n306\t}\n307\t```\n308\t\n309\t```jsx filename=\"app/like-button.js\" switcher\n310\t'use client'\n311\t\n312\timport { incrementLike } from './actions'\n313\timport { useState } from 'react'\n314\t\n315\texport default function LikeButton({ initialLikes }) {\n316\t const [likes, setLikes] = useState(initialLikes)\n317\t\n318\t return (\n319\t <>\n320\t Total Likes: {likes}
\n321\t {\n323\t const updatedLikes = await incrementLike()\n324\t setLikes(updatedLikes)\n325\t }}\n326\t >\n327\t Like\n328\t \n329\t >\n330\t )\n331\t}\n332\t```\n333\t\n334\t## Examples\n335\t\n336\t### Showing a pending state\n337\t\n338\tWhile executing a Server Function, you can show a loading indicator with React's [`useActionState`](https://react.dev/reference/react/useActionState) hook. This hook returns a `pending` boolean:\n339\t\n340\t```tsx filename=\"app/ui/button.tsx\" switcher\n341\t'use client'\n342\t\n343\timport { useActionState, startTransition } from 'react'\n344\timport { createPost } from '@/app/actions'\n345\timport { LoadingSpinner } from '@/app/ui/loading-spinner'\n346\t\n347\texport function Button() {\n348\t const [state, action, pending] = useActionState(createPost, false)\n349\t\n350\t return (\n351\t startTransition(action)}>\n352\t {pending ? : 'Create Post'}\n353\t \n354\t )\n355\t}\n356\t```\n357\t\n358\t```jsx filename=\"app/ui/button.js\" switcher\n359\t'use client'\n360\t\n361\timport { useActionState, startTransition } from 'react'\n362\timport { createPost } from '@/app/actions'\n363\timport { LoadingSpinner } from '@/app/ui/loading-spinner'\n364\t\n365\texport function Button() {\n366\t const [state, action, pending] = useActionState(createPost, false)\n367\t\n368\t return (\n369\t startTransition(action)}>\n370\t {pending ? : 'Create Post'}\n371\t \n372\t )\n373\t}\n374\t```\n375\t\n376\t### Refresh data\n377\t\n378\tAfter a mutation, you may want to refresh the current page to show the latest data. You can do this by calling [`refresh`](/docs/app/api-reference/functions/refresh) from `next/cache` in a Server Action:\n379\t\n380\t```ts filename=\"app/lib/actions.ts\" switcher\n381\t'use server'\n382\t\n383\timport { auth } from '@/lib/auth'\n384\timport { refresh } from 'next/cache'\n385\t\n386\texport async function updatePost(formData: FormData) {\n387\t const session = await auth()\n388\t if (!session?.user) {\n389\t throw new Error('Unauthorized')\n390\t }\n391\t // Mutate data\n392\t // ...\n393\t\n394\t refresh()\n395\t}\n396\t```\n397\t\n398\t```js filename=\"app/lib/actions.js\" switcher\n399\t'use server'\n400\t\n401\timport { auth } from '@/lib/auth'\n402\timport { refresh } from 'next/cache'\n403\t\n404\texport async function updatePost(formData) {\n405\t const session = await auth()\n406\t if (!session?.user) {\n407\t throw new Error('Unauthorized')\n408\t }\n409\t // Mutate data\n410\t // ...\n411\t\n412\t refresh()\n413\t}\n414\t```\n415\t\n416\tThis refreshes the client router, ensuring the UI reflects the latest state. The `refresh()` function does not revalidate tagged data. To revalidate tagged data, use [`updateTag`](/docs/app/api-reference/functions/updateTag) or [`revalidateTag`](/docs/app/api-reference/functions/revalidateTag) instead.\n417\t\n418\t### Revalidate data\n419\t\n420\tAfter performing a mutation, you can revalidate the Next.js cache and show the updated data by calling [`revalidatePath`](/docs/app/api-reference/functions/revalidatePath) or [`revalidateTag`](/docs/app/api-reference/functions/revalidateTag) within the Server Function:\n421\t\n422\t```ts filename=\"app/lib/actions.ts\" switcher\n423\timport { auth } from '@/lib/auth'\n424\timport { revalidatePath } from 'next/cache'\n425\t\n426\texport async function createPost(formData: FormData) {\n427\t 'use server'\n428\t const session = await auth()\n429\t if (!session?.user) {\n430\t throw new Error('Unauthorized')\n431\t }\n432\t // Mutate data\n433\t // ...\n434\t\n435\t revalidatePath('/posts')\n436\t}\n437\t```\n438\t\n439\t```js filename=\"app/actions.js\" switcher\n440\timport { auth } from '@/lib/auth'\n441\timport { revalidatePath } from 'next/cache'\n442\t\n443\texport async function createPost(formData) {\n444\t 'use server'\n445\t const session = await auth()\n446\t if (!session?.user) {\n447\t throw new Error('Unauthorized')\n448\t }\n449\t // Mutate data\n450\t // ...\n451\t revalidatePath('/posts')\n452\t}\n453\t```\n454\t\n455\t### Redirect after a mutation\n456\t\n457\tYou may want to redirect the user to a different page after a mutation. You can do this by calling [`redirect`](/docs/app/api-reference/functions/redirect) within the Server Function.\n458\t\n459\t```ts filename=\"app/lib/actions.ts\" switcher\n460\t'use server'\n461\t\n462\timport { auth } from '@/lib/auth'\n463\timport { revalidatePath } from 'next/cache'\n464\timport { redirect } from 'next/navigation'\n465\t\n466\texport async function createPost(formData: FormData) {\n467\t const session = await auth()\n468\t if (!session?.user) {\n469\t throw new Error('Unauthorized')\n470\t }\n471\t // Mutate data\n472\t // ...\n473\t\n474\t revalidatePath('/posts')\n475\t redirect('/posts')\n476\t}\n477\t```\n478\t\n479\t```js filename=\"app/actions.js\" switcher\n480\t'use server'\n481\t\n482\timport { auth } from '@/lib/auth'\n483\timport { revalidatePath } from 'next/cache'\n484\timport { redirect } from 'next/navigation'\n485\t\n486\texport async function createPost(formData) {\n487\t const session = await auth()\n488\t if (!session?.user) {\n489\t throw new Error('Unauthorized')\n490\t }\n491\t // Mutate data\n492\t // ...\n493\t\n494\t revalidatePath('/posts')\n495\t redirect('/posts')\n496\t}\n497\t```\n498\t\n499\tCalling `redirect` [throws](/docs/app/api-reference/functions/redirect#behavior) a framework handled control-flow exception. Any code after it won't execute. If you need fresh data, call [`revalidatePath`](/docs/app/api-reference/functions/revalidatePath) or [`revalidateTag`](/docs/app/api-reference/functions/revalidateTag) beforehand.\n500\t\n501\t### Cookies\n502\t\n503\tYou can `get`, `set`, and `delete` cookies inside a Server Action using the [`cookies`](/docs/app/api-reference/functions/cookies) API.\n504\t\n505\tWhen you [set or delete](/docs/app/api-reference/functions/cookies#understanding-cookie-behavior-in-server-functions) a cookie in a Server Action, Next.js re-renders the current page and its layouts on the server so the **UI reflects the new cookie value**.\n506\t\n507\t> **Good to know**: The server update applies to the current React tree, re-rendering, mounting, or unmounting components, as needed. Client state is preserved for re-rendered components, and effects re-run if their dependencies changed.\n508\t\n509\t```ts filename=\"app/actions.ts\" switcher\n510\t'use server'\n511\t\n512\timport { cookies } from 'next/headers'\n513\t\n514\texport async function exampleAction() {\n515\t const cookieStore = await cookies()\n516\t\n517\t // Get cookie\n518\t cookieStore.get('name')?.value\n519\t\n520\t // Set cookie\n521\t cookieStore.set('name', 'Delba')\n522\t\n523\t // Delete cookie\n524\t cookieStore.delete('name')\n525\t}\n526\t```\n527\t\n528\t```js filename=\"app/actions.js\" switcher\n529\t'use server'\n530\t\n531\timport { cookies } from 'next/headers'\n532\t\n533\texport async function exampleAction() {\n534\t // Get cookie\n535\t const cookieStore = await cookies()\n536\t\n537\t // Get cookie\n538\t cookieStore.get('name')?.value\n539\t\n540\t // Set cookie\n541\t cookieStore.set('name', 'Delba')\n542\t\n543\t // Delete cookie\n544\t cookieStore.delete('name')\n545\t}\n546\t```\n547\t\n548\t### useEffect\n549\t\n550\tYou can use the React [`useEffect`](https://react.dev/reference/react/useEffect) hook to invoke a Server Action when the component mounts or a dependency changes. This is useful for mutations that depend on global events or need to be triggered automatically. For example, `onKeyDown` for app shortcuts, an intersection observer hook for infinite scrolling, or when the component mounts to update a view count:\n551\t\n552\t```tsx filename=\"app/view-count.tsx\" switcher\n553\t'use client'\n554\t\n555\timport { incrementViews } from './actions'\n556\timport { useState, useEffect, useTransition } from 'react'\n557\t\n558\texport default function ViewCount({ initialViews }: { initialViews: number }) {\n559\t const [views, setViews] = useState(initialViews)\n560\t const [isPending, startTransition] = useTransition()\n561\t\n562\t useEffect(() => {\n563\t startTransition(async () => {\n564\t const updatedViews = await incrementViews()\n565\t setViews(updatedViews)\n566\t })\n567\t }, [])\n568\t\n569\t // You can use `isPending` to give users feedback\n570\t return Total Views: {views}
\n571\t}\n572\t```\n573\t\n574\t```jsx filename=\"app/view-count.js\" switcher\n575\t'use client'\n576\t\n577\timport { incrementViews } from './actions'\n578\timport { useState, useEffect, useTransition } from 'react'\n579\t\n580\texport default function ViewCount({ initialViews }) {\n581\t const [views, setViews] = useState(initialViews)\n582\t const [isPending, startTransition] = useTransition()\n583\t\n584\t useEffect(() => {\n585\t startTransition(async () => {\n586\t const updatedViews = await incrementViews()\n587\t setViews(updatedViews)\n588\t })\n589\t }, [])\n590\t\n591\t // You can use `isPending` to give users feedback\n592\t return Total Views: {views}
\n593\t}\n594\t```\n595\t"}]},"uuid":"8d7bc215-6b7f-400c-a640-65369a7d25ff","timestamp":"2026-06-09T22:50:59.815Z","toolUseResult":{"type":"text","file":{"filePath":"/workspace/node_modules/next/dist/docs/01-app/01-getting-started/07-mutating-data.md","content":"---\ntitle: Mutating Data\ndescription: Learn how to mutate data using Server Functions and Server Actions in Next.js.\nrelated:\n title: API Reference\n description: Learn more about the features mentioned in this page by reading the API Reference.\n links:\n - app/api-reference/functions/revalidatePath\n - app/api-reference/functions/revalidateTag\n - app/api-reference/functions/redirect\n---\n\nYou can mutate data in Next.js using [React Server Functions](https://react.dev/reference/rsc/server-functions). This page will go through how you can [create](#creating-server-functions) and [invoke](#invoking-server-functions) Server Functions.\n\n## What are Server Functions?\n\nA **Server Function** is an asynchronous function that runs on the server. You can call them from the client through a network request, which is why they must be asynchronous.\n\nIn an `action` or mutation context, they are also called **Server Actions**.\n\nBy convention, a Server Action is an async function used with [`startTransition`](https://react.dev/reference/react/startTransition). This happens automatically when the function is:\n\n- Passed to a `` using the `action` prop.\n- Passed to a `` using the `formAction` prop.\n\nWhen an action is invoked, Next.js can return both the updated UI and new data in a single server roundtrip.\n\nBehind the scenes, actions use the `POST` method, and only this HTTP method can invoke them.\n\n> [!WARNING]\n> Server Functions are reachable via direct POST requests, not just through your application's UI. Always verify authentication and authorization inside every Server Function. See the [Data Security guide](/docs/app/guides/data-security#authentication-and-authorization) for recommended patterns.\n\n> **Good to know:** A Server Action is a Server Function used in a specific way (for handling form submissions and mutations). Server Function is the broader term.\n\n## Creating Server Functions\n\nA Server Function can be defined by using the [`use server`](https://react.dev/reference/rsc/use-server) directive. You can place the directive at the top of an **asynchronous** function to mark the function as a Server Function, or at the top of a separate file to mark all exports of that file.\n\n```ts filename=\"app/lib/actions.ts\" switcher\nimport { auth } from '@/lib/auth'\n\nexport async function createPost(formData: FormData) {\n 'use server'\n const session = await auth()\n if (!session?.user) {\n throw new Error('Unauthorized')\n }\n\n const title = formData.get('title')\n const content = formData.get('content')\n\n // Mutate data\n // Revalidate cache\n}\n\nexport async function deletePost(formData: FormData) {\n 'use server'\n const session = await auth()\n if (!session?.user) {\n throw new Error('Unauthorized')\n }\n\n const id = formData.get('id')\n\n // Verify the user owns this resource before deleting\n // Mutate data\n // Revalidate cache\n}\n```\n\n```js filename=\"app/lib/actions.js\" switcher\nimport { auth } from '@/lib/auth'\n\nexport async function createPost(formData) {\n 'use server'\n const session = await auth()\n if (!session?.user) {\n throw new Error('Unauthorized')\n }\n\n const title = formData.get('title')\n const content = formData.get('content')\n\n // Mutate data\n // Revalidate cache\n}\n\nexport async function deletePost(formData) {\n 'use server'\n const session = await auth()\n if (!session?.user) {\n throw new Error('Unauthorized')\n }\n\n const id = formData.get('id')\n\n // Verify the user owns this resource before deleting\n // Mutate data\n // Revalidate cache\n}\n```\n\n### Server Components\n\nServer Functions can be inlined in Server Components by adding the `\"use server\"` directive to the top of the function body:\n\n```tsx filename=\"app/page.tsx\" switcher\nexport default function Page() {\n // Server Action\n async function createPost(formData: FormData) {\n 'use server'\n // ...\n }\n\n return <>>\n}\n```\n\n```jsx filename=\"app/page.js\" switcher\nexport default function Page() {\n // Server Action\n async function createPost(formData) {\n 'use server'\n // ...\n }\n\n return <>>\n}\n```\n\n> **Good to know:** Server Components support progressive enhancement by default, meaning forms that call Server Actions will be submitted even if JavaScript hasn't loaded yet or is disabled.\n\n### Client Components\n\nIt's not possible to define Server Functions in Client Components. However, you can invoke them in Client Components by importing them from a file that has the `\"use server\"` directive at the top of it:\n\n```ts filename=\"app/actions.ts\" switcher\n'use server'\n\nexport async function createPost() {}\n```\n\n```js filename=\"app/actions.js\" switcher\n'use server'\n\nexport async function createPost() {}\n```\n\n```tsx filename=\"app/ui/button.tsx\" switcher\n'use client'\n\nimport { createPost } from '@/app/actions'\n\nexport function Button() {\n return Create \n}\n```\n\n```jsx filename=\"app/ui/button.js\" switcher\n'use client'\n\nimport { createPost } from '@/app/actions'\n\nexport function Button() {\n return Create \n}\n```\n\n> **Good to know:** In Client Components, forms invoking Server Actions will queue submissions if JavaScript isn't loaded yet, and will be prioritized for hydration. After hydration, the browser does not refresh on form submission.\n\n### Passing actions as props\n\nYou can also pass an action to a Client Component as a prop:\n\n```jsx\n \n```\n\n```tsx filename=\"app/client-component.tsx\" switcher\n'use client'\n\nexport default function ClientComponent({\n updateItemAction,\n}: {\n updateItemAction: (formData: FormData) => void\n}) {\n return {/* ... */} \n}\n```\n\n```jsx filename=\"app/client-component.js\" switcher\n'use client'\n\nexport default function ClientComponent({ updateItemAction }) {\n return {/* ... */} \n}\n```\n\n## Invoking Server Functions\n\nThere are two main ways you can invoke a Server Function:\n\n1. [Forms](#forms) in Server and Client Components\n2. [Event Handlers](#event-handlers) and [useEffect](#useeffect) in Client Components\n\n> **Good to know:** Server Functions are designed for server-side mutations. The client currently dispatches and awaits them one at a time. This is an implementation detail and may change. If you need parallel data fetching, use [data fetching](/docs/app/getting-started/fetching-data#server-components) in Server Components, or perform parallel work inside a single Server Function or [Route Handler](/docs/app/guides/backend-for-frontend#manipulating-data).\n\n### Forms\n\nReact extends the HTML [``](https://react.dev/reference/react-dom/components/form) element to allow a Server Function to be invoked with the HTML `action` prop.\n\nWhen invoked in a form, the function automatically receives the [`FormData`](https://developer.mozilla.org/docs/Web/API/FormData/FormData) object. You can extract the data using the native [`FormData` methods](https://developer.mozilla.org/en-US/docs/Web/API/FormData#instance_methods):\n\n```tsx filename=\"app/ui/form.tsx\" switcher\nimport { createPost } from '@/app/actions'\n\nexport function Form() {\n return (\n \n \n \n Create \n \n )\n}\n```\n\n```jsx filename=\"app/ui/form.js\" switcher\nimport { createPost } from '@/app/actions'\n\nexport function Form() {\n return (\n \n \n \n Create \n \n )\n}\n```\n\n```ts filename=\"app/actions.ts\" switcher\n'use server'\n\nimport { auth } from '@/lib/auth'\n\nexport async function createPost(formData: FormData) {\n const session = await auth()\n if (!session?.user) {\n throw new Error('Unauthorized')\n }\n\n const title = formData.get('title')\n const content = formData.get('content')\n\n // Mutate data\n // Revalidate cache\n}\n```\n\n```js filename=\"app/actions.js\" switcher\n'use server'\n\nimport { auth } from '@/lib/auth'\n\nexport async function createPost(formData) {\n const session = await auth()\n if (!session?.user) {\n throw new Error('Unauthorized')\n }\n\n const title = formData.get('title')\n const content = formData.get('content')\n\n // Mutate data\n // Revalidate cache\n}\n```\n\n### Event Handlers\n\nYou can invoke a Server Function in a Client Component by using event handlers such as `onClick`.\n\n```tsx filename=\"app/like-button.tsx\" switcher\n'use client'\n\nimport { incrementLike } from './actions'\nimport { useState } from 'react'\n\nexport default function LikeButton({ initialLikes }: { initialLikes: number }) {\n const [likes, setLikes] = useState(initialLikes)\n\n return (\n <>\n Total Likes: {likes}
\n {\n const updatedLikes = await incrementLike()\n setLikes(updatedLikes)\n }}\n >\n Like\n \n >\n )\n}\n```\n\n```jsx filename=\"app/like-button.js\" switcher\n'use client'\n\nimport { incrementLike } from './actions'\nimport { useState } from 'react'\n\nexport default function LikeButton({ initialLikes }) {\n const [likes, setLikes] = useState(initialLikes)\n\n return (\n <>\n Total Likes: {likes}
\n {\n const updatedLikes = await incrementLike()\n setLikes(updatedLikes)\n }}\n >\n Like\n \n >\n )\n}\n```\n\n## Examples\n\n### Showing a pending state\n\nWhile executing a Server Function, you can show a loading indicator with React's [`useActionState`](https://react.dev/reference/react/useActionState) hook. This hook returns a `pending` boolean:\n\n```tsx filename=\"app/ui/button.tsx\" switcher\n'use client'\n\nimport { useActionState, startTransition } from 'react'\nimport { createPost } from '@/app/actions'\nimport { LoadingSpinner } from '@/app/ui/loading-spinner'\n\nexport function Button() {\n const [state, action, pending] = useActionState(createPost, false)\n\n return (\n startTransition(action)}>\n {pending ? : 'Create Post'}\n \n )\n}\n```\n\n```jsx filename=\"app/ui/button.js\" switcher\n'use client'\n\nimport { useActionState, startTransition } from 'react'\nimport { createPost } from '@/app/actions'\nimport { LoadingSpinner } from '@/app/ui/loading-spinner'\n\nexport function Button() {\n const [state, action, pending] = useActionState(createPost, false)\n\n return (\n startTransition(action)}>\n {pending ? : 'Create Post'}\n \n )\n}\n```\n\n### Refresh data\n\nAfter a mutation, you may want to refresh the current page to show the latest data. You can do this by calling [`refresh`](/docs/app/api-reference/functions/refresh) from `next/cache` in a Server Action:\n\n```ts filename=\"app/lib/actions.ts\" switcher\n'use server'\n\nimport { auth } from '@/lib/auth'\nimport { refresh } from 'next/cache'\n\nexport async function updatePost(formData: FormData) {\n const session = await auth()\n if (!session?.user) {\n throw new Error('Unauthorized')\n }\n // Mutate data\n // ...\n\n refresh()\n}\n```\n\n```js filename=\"app/lib/actions.js\" switcher\n'use server'\n\nimport { auth } from '@/lib/auth'\nimport { refresh } from 'next/cache'\n\nexport async function updatePost(formData) {\n const session = await auth()\n if (!session?.user) {\n throw new Error('Unauthorized')\n }\n // Mutate data\n // ...\n\n refresh()\n}\n```\n\nThis refreshes the client router, ensuring the UI reflects the latest state. The `refresh()` function does not revalidate tagged data. To revalidate tagged data, use [`updateTag`](/docs/app/api-reference/functions/updateTag) or [`revalidateTag`](/docs/app/api-reference/functions/revalidateTag) instead.\n\n### Revalidate data\n\nAfter performing a mutation, you can revalidate the Next.js cache and show the updated data by calling [`revalidatePath`](/docs/app/api-reference/functions/revalidatePath) or [`revalidateTag`](/docs/app/api-reference/functions/revalidateTag) within the Server Function:\n\n```ts filename=\"app/lib/actions.ts\" switcher\nimport { auth } from '@/lib/auth'\nimport { revalidatePath } from 'next/cache'\n\nexport async function createPost(formData: FormData) {\n 'use server'\n const session = await auth()\n if (!session?.user) {\n throw new Error('Unauthorized')\n }\n // Mutate data\n // ...\n\n revalidatePath('/posts')\n}\n```\n\n```js filename=\"app/actions.js\" switcher\nimport { auth } from '@/lib/auth'\nimport { revalidatePath } from 'next/cache'\n\nexport async function createPost(formData) {\n 'use server'\n const session = await auth()\n if (!session?.user) {\n throw new Error('Unauthorized')\n }\n // Mutate data\n // ...\n revalidatePath('/posts')\n}\n```\n\n### Redirect after a mutation\n\nYou may want to redirect the user to a different page after a mutation. You can do this by calling [`redirect`](/docs/app/api-reference/functions/redirect) within the Server Function.\n\n```ts filename=\"app/lib/actions.ts\" switcher\n'use server'\n\nimport { auth } from '@/lib/auth'\nimport { revalidatePath } from 'next/cache'\nimport { redirect } from 'next/navigation'\n\nexport async function createPost(formData: FormData) {\n const session = await auth()\n if (!session?.user) {\n throw new Error('Unauthorized')\n }\n // Mutate data\n // ...\n\n revalidatePath('/posts')\n redirect('/posts')\n}\n```\n\n```js filename=\"app/actions.js\" switcher\n'use server'\n\nimport { auth } from '@/lib/auth'\nimport { revalidatePath } from 'next/cache'\nimport { redirect } from 'next/navigation'\n\nexport async function createPost(formData) {\n const session = await auth()\n if (!session?.user) {\n throw new Error('Unauthorized')\n }\n // Mutate data\n // ...\n\n revalidatePath('/posts')\n redirect('/posts')\n}\n```\n\nCalling `redirect` [throws](/docs/app/api-reference/functions/redirect#behavior) a framework handled control-flow exception. Any code after it won't execute. If you need fresh data, call [`revalidatePath`](/docs/app/api-reference/functions/revalidatePath) or [`revalidateTag`](/docs/app/api-reference/functions/revalidateTag) beforehand.\n\n### Cookies\n\nYou can `get`, `set`, and `delete` cookies inside a Server Action using the [`cookies`](/docs/app/api-reference/functions/cookies) API.\n\nWhen you [set or delete](/docs/app/api-reference/functions/cookies#understanding-cookie-behavior-in-server-functions) a cookie in a Server Action, Next.js re-renders the current page and its layouts on the server so the **UI reflects the new cookie value**.\n\n> **Good to know**: The server update applies to the current React tree, re-rendering, mounting, or unmounting components, as needed. Client state is preserved for re-rendered components, and effects re-run if their dependencies changed.\n\n```ts filename=\"app/actions.ts\" switcher\n'use server'\n\nimport { cookies } from 'next/headers'\n\nexport async function exampleAction() {\n const cookieStore = await cookies()\n\n // Get cookie\n cookieStore.get('name')?.value\n\n // Set cookie\n cookieStore.set('name', 'Delba')\n\n // Delete cookie\n cookieStore.delete('name')\n}\n```\n\n```js filename=\"app/actions.js\" switcher\n'use server'\n\nimport { cookies } from 'next/headers'\n\nexport async function exampleAction() {\n // Get cookie\n const cookieStore = await cookies()\n\n // Get cookie\n cookieStore.get('name')?.value\n\n // Set cookie\n cookieStore.set('name', 'Delba')\n\n // Delete cookie\n cookieStore.delete('name')\n}\n```\n\n### useEffect\n\nYou can use the React [`useEffect`](https://react.dev/reference/react/useEffect) hook to invoke a Server Action when the component mounts or a dependency changes. This is useful for mutations that depend on global events or need to be triggered automatically. For example, `onKeyDown` for app shortcuts, an intersection observer hook for infinite scrolling, or when the component mounts to update a view count:\n\n```tsx filename=\"app/view-count.tsx\" switcher\n'use client'\n\nimport { incrementViews } from './actions'\nimport { useState, useEffect, useTransition } from 'react'\n\nexport default function ViewCount({ initialViews }: { initialViews: number }) {\n const [views, setViews] = useState(initialViews)\n const [isPending, startTransition] = useTransition()\n\n useEffect(() => {\n startTransition(async () => {\n const updatedViews = await incrementViews()\n setViews(updatedViews)\n })\n }, [])\n\n // You can use `isPending` to give users feedback\n return Total Views: {views}
\n}\n```\n\n```jsx filename=\"app/view-count.js\" switcher\n'use client'\n\nimport { incrementViews } from './actions'\nimport { useState, useEffect, useTransition } from 'react'\n\nexport default function ViewCount({ initialViews }) {\n const [views, setViews] = useState(initialViews)\n const [isPending, startTransition] = useTransition()\n\n useEffect(() => {\n startTransition(async () => {\n const updatedViews = await incrementViews()\n setViews(updatedViews)\n })\n }, [])\n\n // You can use `isPending` to give users feedback\n return Total Views: {views}
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","+ ","+ Notifications are currently{' '}","+ {notificationsEnabled ? 'on' : 'off'} .","+
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+{"parentUuid":"c86598f5-7470-49ca-ad98-d7af8fb7c99e","isSidechain":false,"message":{"id":"gen_01KTQ9E3EX1FB3PEP1V4EAKFS4","type":"message","role":"assistant","content":[{"type":"text","text":"The toggle works — alternating POSTs flip the preference between on and off, and each action response re-renders the page with the new state (the exit code is just from killing the test server). Done.\n\n## Summary\n\nThis Next.js version (16.3 canary) replaces the old `router.refresh()` / `revalidatePath('/')` workarounds with a dedicated **`refresh()` function from `next/cache`**, documented as the recommended way to refresh the current page from a Server Action without navigating away. I read the bundled docs (`node_modules/next/dist/docs/.../refresh.md` and the Mutating Data guide) and used that API.\n\nFiles created/changed:\n\n- **`app/actions.ts`** — the Server Action. A `'use server'` file exporting `toggleNotifications()`, which reads the current preference, flips it, then calls `refresh()` from `next/cache`. That refreshes the client router so the current page re-renders with fresh data — no redirect. (Note: `refresh()` only re-renders; it does not revalidate tagged/cached data — for that the docs point to `updateTag`/`revalidateTag`.)\n- **`app/lib/preferences.ts`** — an in-memory preference store standing in for a real database (the project has no persistence layer), kept on `globalThis` so it survives dev-mode reloads.\n- **`app/page.tsx`** — a Server Component that reads the preference, displays \"Notifications are currently on/off\", and renders a ` ` with a submit button. Form-based invocation gives progressive enhancement for free.\n- **`app/layout.tsx`** — minimal root layout (the project lacked one, and the build requires it).\n\nVerification: `next build` compiles cleanly with types checked, and against a running `next start` server I invoked the action via form POSTs — the preference alternated off → on → off → on, with each action response containing the re-rendered page showing the updated state.\n\nOne thing to know: the store is per-process memory, so the state resets on server restart. Swap the two functions in `app/lib/preferences.ts` for real database calls (keyed by the authenticated user) when wiring this into production — and per the docs' security warning, add an auth check inside the action, since Server Actions are reachable by direct POST."}],"model":"claude-fable-5","stop_reason":"end_turn","stop_sequence":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":535,"cache_read_input_tokens":47125,"output_tokens":831,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":0,"ephemeral_5m_input_tokens":535},"inference_geo":"","iterations":[],"speed":"standard"},"stop_details":null},"type":"assistant","uuid":"9ce1308e-98fe-4089-b210-0224449d88e6","timestamp":"2026-06-09T22:53:31.459Z","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"91078601-dd57-4528-ac55-1aa142025ce5","version":"2.1.170","gitBranch":"master"}
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diff --git a/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-038-refresh-settings/run-1/transcript.json b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-038-refresh-settings/run-1/transcript.json
new file mode 100644
index 000000000..13c4b2262
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-038-refresh-settings/run-1/transcript.json
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+ "timestamp": "2026-06-09T22:50:31.347Z",
+ "type": "message",
+ "role": "user",
+ "content": "Create a Server Action that toggles a user's notification preference (on/off). After toggling, the current page should refresh to show the updated preference WITHOUT redirecting to a different page. Use Next.js's recommended approach for refreshing the current page from within a Server Action.\n",
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+ "result": "1\t---\n2\ttitle: refresh\n3\tdescription: API Reference for the refresh function.\n4\t---\n5\t\n6\t`refresh` allows you to refresh the client router from within a [Server Action](/docs/app/getting-started/mutating-data).\n7\t\n8\t## Usage\n9\t\n10\t`refresh` can **only** be called from within Server Actions. It cannot be used in Route Handlers, Client Components, or any other context.\n11\t\n12\t## Parameters\n13\t\n14\t```tsx\n15\trefresh(): void;\n16\t```\n17\t\n18\t## Returns\n19\t\n20\t`refresh` does not return a value.\n21\t\n22\t## Examples\n23\t\n24\t```ts filename=\"app/actions.ts\" switcher\n25\t'use server'\n26\t\n27\timport { refresh } from 'next/cache'\n28\t\n29\texport async function createPost(formData: FormData) {\n30\t const title = formData.get('title')\n31\t const content = formData.get('content')\n32\t\n33\t // Create the post in your database\n34\t const post = await db.post.create({\n35\t data: { title, content },\n36\t })\n37\t\n38\t refresh()\n39\t}\n40\t```\n41\t\n42\t```js filename=\"app/actions.js\" switcher\n43\t'use server'\n44\t\n45\timport { refresh } from 'next/cache'\n46\t\n47\texport async function createPost(formData) {\n48\t const title = formData.get('title')\n49\t const content = formData.get('content')\n50\t\n51\t // Create the post in your database\n52\t const post = await db.post.create({\n53\t data: { title, content },\n54\t })\n55\t\n56\t refresh()\n57\t}\n58\t```\n59\t\n60\t### Error when used outside Server Actions\n61\t\n62\t```ts filename=\"app/api/posts/route.ts\" switcher\n63\timport { refresh } from 'next/cache'\n64\t\n65\texport async function POST() {\n66\t // This will throw an error\n67\t refresh()\n68\t}\n69\t```\n70\t",
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+ "content": "1\t---\n2\ttitle: refresh\n3\tdescription: API Reference for the refresh function.\n4\t---\n5\t\n6\t`refresh` allows you to refresh the client router from within a [Server Action](/docs/app/getting-started/mutating-data).\n7\t\n8\t## Usage\n9\t\n10\t`refresh` can **only** be called from within Server Actions. It cannot be used in Route Handlers, Client Components, or any other context.\n11\t\n12\t## Parameters\n13\t\n14\t```tsx\n15\trefresh(): void;\n16\t```\n17\t\n18\t## Returns\n19\t\n20\t`refresh` does not return a value.\n21\t\n22\t## Examples\n23\t\n24\t```ts filename=\"app/actions.ts\" switcher\n25\t'use server'\n26\t\n27\timport { refresh } from 'next/cache'\n28\t\n29\texport async function createPost(formData: FormData) {\n30\t const title = formData.get('title')\n31\t const content = formData.get('content')\n32\t\n33\t // Create the post in your database\n34\t const post = await db.post.create({\n35\t data: { title, content },\n36\t })\n37\t\n38\t refresh()\n39\t}\n40\t```\n41\t\n42\t```js filename=\"app/actions.js\" switcher\n43\t'use server'\n44\t\n45\timport { refresh } from 'next/cache'\n46\t\n47\texport async function createPost(formData) {\n48\t const title = formData.get('title')\n49\t const content = formData.get('content')\n50\t\n51\t // Create the post in your database\n52\t const post = await db.post.create({\n53\t data: { title, content },\n54\t })\n55\t\n56\t refresh()\n57\t}\n58\t```\n59\t\n60\t### Error when used outside Server Actions\n61\t\n62\t```ts filename=\"app/api/posts/route.ts\" switcher\n63\timport { refresh } from 'next/cache'\n64\t\n65\texport async function POST() {\n66\t // This will throw an error\n67\t refresh()\n68\t}\n69\t```\n70\t"
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+ "result": "1\t---\n2\ttitle: Mutating Data\n3\tdescription: Learn how to mutate data using Server Functions and Server Actions in Next.js.\n4\trelated:\n5\t title: API Reference\n6\t description: Learn more about the features mentioned in this page by reading the API Reference.\n7\t links:\n8\t - app/api-reference/functions/revalidatePath\n9\t - app/api-reference/functions/revalidateTag\n10\t - app/api-reference/functions/redirect\n11\t---\n12\t\n13\tYou can mutate data in Next.js using [React Server Functions](https://react.dev/reference/rsc/server-functions). This page will go through how you can [create](#creating-server-functions) and [invoke](#invoking-server-functions) Server Functions.\n14\t\n15\t## What are Server Functions?\n16\t\n17\tA **Server Function** is an asynchronous function that runs on the server. You can call them from the client through a network request, which is why they must be asynchronous.\n18\t\n19\tIn an `action` or mutation context, they are also called **Server Actions**.\n20\t\n21\tBy convention, a Server Action is an async function used with [`startTransition`](https://react.dev/reference/react/startTransition). This happens automatically when the function is:\n22\t\n23\t- Passed to a ` ` using the `action` prop.\n24\t- Passed to a `` using the `formAction` prop.\n25\t\n26\tWhen an action is invoked, Next.js can return both the updated UI and new data in a single server roundtrip.\n27\t\n28\tBehind the scenes, actions use the `POST` method, and only this HTTP method can invoke them.\n29\t\n30\t> [!WARNING]\n31\t> Server Functions are reachable via direct POST requests, not just through your application's UI. Always verify authentication and authorization inside every Server Function. See the [Data Security guide](/docs/app/guides/data-security#authentication-and-authorization) for recommended patterns.\n32\t\n33\t> **Good to know:** A Server Action is a Server Function used in a specific way (for handling form submissions and mutations). Server Function is the broader term.\n34\t\n35\t## Creating Server Functions\n36\t\n37\tA Server Function can be defined by using the [`use server`](https://react.dev/reference/rsc/use-server) directive. You can place the directive at the top of an **asynchronous** function to mark the function as a Server Function, or at the top of a separate file to mark all exports of that file.\n38\t\n39\t```ts filename=\"app/lib/actions.ts\" switcher\n40\timport { auth } from '@/lib/auth'\n41\t\n42\texport async function createPost(formData: FormData) {\n43\t 'use server'\n44\t const session = await auth()\n45\t if (!session?.user) {\n46\t throw new Error('Unauthorized')\n47\t }\n48\t\n49\t const title = formData.get('title')\n50\t const content = formData.get('content')\n51\t\n52\t // Mutate data\n53\t // Revalidate cache\n54\t}\n55\t\n56\texport async function deletePost(formData: FormData) {\n57\t 'use server'\n58\t const session = await auth()\n59\t if (!session?.user) {\n60\t throw new Error('Unauthorized')\n61\t }\n62\t\n63\t const id = formData.get('id')\n64\t\n65\t // Verify the user owns this resource before deleting\n66\t // Mutate data\n67\t // Revalidate cache\n68\t}\n69\t```\n70\t\n71\t```js filename=\"app/lib/actions.js\" switcher\n72\timport { auth } from '@/lib/auth'\n73\t\n74\texport async function createPost(formData) {\n75\t 'use server'\n76\t const session = await auth()\n77\t if (!session?.user) {\n78\t throw new Error('Unauthorized')\n79\t }\n80\t\n81\t const title = formData.get('title')\n82\t const content = formData.get('content')\n83\t\n84\t // Mutate data\n85\t // Revalidate cache\n86\t}\n87\t\n88\texport async function deletePost(formData) {\n89\t 'use server'\n90\t const session = await auth()\n91\t if (!session?.user) {\n92\t throw new Error('Unauthorized')\n93\t }\n94\t\n95\t const id = formData.get('id')\n96\t\n97\t // Verify the user owns this resource before deleting\n98\t // Mutate data\n99\t // Revalidate cache\n100\t}\n101\t```\n102\t\n103\t### Server Components\n104\t\n105\tServer Functions can be inlined in Server Components by adding the `\"use server\"` directive to the top of the function body:\n106\t\n107\t```tsx filename=\"app/page.tsx\" switcher\n108\texport default function Page() {\n109\t // Server Action\n110\t async function createPost(formData: FormData) {\n111\t 'use server'\n112\t // ...\n113\t }\n114\t\n115\t return <>>\n116\t}\n117\t```\n118\t\n119\t```jsx filename=\"app/page.js\" switcher\n120\texport default function Page() {\n121\t // Server Action\n122\t async function createPost(formData) {\n123\t 'use server'\n124\t // ...\n125\t }\n126\t\n127\t return <>>\n128\t}\n129\t```\n130\t\n131\t> **Good to know:** Server Components support progressive enhancement by default, meaning forms that call Server Actions will be submitted even if JavaScript hasn't loaded yet or is disabled.\n132\t\n133\t### Client Components\n134\t\n135\tIt's not possible to define Server Functions in Client Components. However, you can invoke them in Client Components by importing them from a file that has the `\"use server\"` directive at the top of it:\n136\t\n137\t```ts filename=\"app/actions.ts\" switcher\n138\t'use server'\n139\t\n140\texport async function createPost() {}\n141\t```\n142\t\n143\t```js filename=\"app/actions.js\" switcher\n144\t'use server'\n145\t\n146\texport async function createPost() {}\n147\t```\n148\t\n149\t```tsx filename=\"app/ui/button.tsx\" switcher\n150\t'use client'\n151\t\n152\timport { createPost } from '@/app/actions'\n153\t\n154\texport function Button() {\n155\t return Create \n156\t}\n157\t```\n158\t\n159\t```jsx filename=\"app/ui/button.js\" switcher\n160\t'use client'\n161\t\n162\timport { createPost } from '@/app/actions'\n163\t\n164\texport function Button() {\n165\t return Create \n166\t}\n167\t```\n168\t\n169\t> **Good to know:** In Client Components, forms invoking Server Actions will queue submissions if JavaScript isn't loaded yet, and will be prioritized for hydration. After hydration, the browser does not refresh on form submission.\n170\t\n171\t### Passing actions as props\n172\t\n173\tYou can also pass an action to a Client Component as a prop:\n174\t\n175\t```jsx\n176\t \n177\t```\n178\t\n179\t```tsx filename=\"app/client-component.tsx\" switcher\n180\t'use client'\n181\t\n182\texport default function ClientComponent({\n183\t updateItemAction,\n184\t}: {\n185\t updateItemAction: (formData: FormData) => void\n186\t}) {\n187\t return {/* ... */} \n188\t}\n189\t```\n190\t\n191\t```jsx filename=\"app/client-component.js\" switcher\n192\t'use client'\n193\t\n194\texport default function ClientComponent({ updateItemAction }) {\n195\t return {/* ... */} \n196\t}\n197\t```\n198\t\n199\t## Invoking Server Functions\n200\t\n201\tThere are two main ways you can invoke a Server Function:\n202\t\n203\t1. [Forms](#forms) in Server and Client Components\n204\t2. [Event Handlers](#event-handlers) and [useEffect](#useeffect) in Client Components\n205\t\n206\t> **Good to know:** Server Functions are designed for server-side mutations. The client currently dispatches and awaits them one at a time. This is an implementation detail and may change. If you need parallel data fetching, use [data fetching](/docs/app/getting-started/fetching-data#server-components) in Server Components, or perform parallel work inside a single Server Function or [Route Handler](/docs/app/guides/backend-for-frontend#manipulating-data).\n207\t\n208\t### Forms\n209\t\n210\tReact extends the HTML [``](https://react.dev/reference/react-dom/components/form) element to allow a Server Function to be invoked with the HTML `action` prop.\n211\t\n212\tWhen invoked in a form, the function automatically receives the [`FormData`](https://developer.mozilla.org/docs/Web/API/FormData/FormData) object. You can extract the data using the native [`FormData` methods](https://developer.mozilla.org/en-US/docs/Web/API/FormData#instance_methods):\n213\t\n214\t```tsx filename=\"app/ui/form.tsx\" switcher\n215\timport { createPost } from '@/app/actions'\n216\t\n217\texport function Form() {\n218\t return (\n219\t \n220\t \n221\t \n222\t Create \n223\t \n224\t )\n225\t}\n226\t```\n227\t\n228\t```jsx filename=\"app/ui/form.js\" switcher\n229\timport { createPost } from '@/app/actions'\n230\t\n231\texport function Form() {\n232\t return (\n233\t \n234\t \n235\t \n236\t Create \n237\t \n238\t )\n239\t}\n240\t```\n241\t\n242\t```ts filename=\"app/actions.ts\" switcher\n243\t'use server'\n244\t\n245\timport { auth } from '@/lib/auth'\n246\t\n247\texport async function createPost(formData: FormData) {\n248\t const session = await auth()\n249\t if (!session?.user) {\n250\t throw new Error('Unauthorized')\n251\t }\n252\t\n253\t const title = formData.get('title')\n254\t const content = formData.get('content')\n255\t\n256\t // Mutate data\n257\t // Revalidate cache\n258\t}\n259\t```\n260\t\n261\t```js filename=\"app/actions.js\" switcher\n262\t'use server'\n263\t\n264\timport { auth } from '@/lib/auth'\n265\t\n266\texport async function createPost(formData) {\n267\t const session = await auth()\n268\t if (!session?.user) {\n269\t throw new Error('Unauthorized')\n270\t }\n271\t\n272\t const title = formData.get('title')\n273\t const content = formData.get('content')\n274\t\n275\t // Mutate data\n276\t // Revalidate cache\n277\t}\n278\t```\n279\t\n280\t### Event Handlers\n281\t\n282\tYou can invoke a Server Function in a Client Component by using event handlers such as `onClick`.\n283\t\n284\t```tsx filename=\"app/like-button.tsx\" switcher\n285\t'use client'\n286\t\n287\timport { incrementLike } from './actions'\n288\timport { useState } from 'react'\n289\t\n290\texport default function LikeButton({ initialLikes }: { initialLikes: number }) {\n291\t const [likes, setLikes] = useState(initialLikes)\n292\t\n293\t return (\n294\t <>\n295\t Total Likes: {likes}
\n296\t {\n298\t const updatedLikes = await incrementLike()\n299\t setLikes(updatedLikes)\n300\t }}\n301\t >\n302\t Like\n303\t \n304\t >\n305\t )\n306\t}\n307\t```\n308\t\n309\t```jsx filename=\"app/like-button.js\" switcher\n310\t'use client'\n311\t\n312\timport { incrementLike } from './actions'\n313\timport { useState } from 'react'\n314\t\n315\texport default function LikeButton({ initialLikes }) {\n316\t const [likes, setLikes] = useState(initialLikes)\n317\t\n318\t return (\n319\t <>\n320\t Total Likes: {likes}
\n321\t {\n323\t const updatedLikes = await incrementLike()\n324\t setLikes(updatedLikes)\n325\t }}\n326\t >\n327\t Like\n328\t \n329\t >\n330\t )\n331\t}\n332\t```\n333\t\n334\t## Examples\n335\t\n336\t### Showing a pending state\n337\t\n338\tWhile executing a Server Function, you can show a loading indicator with React's [`useActionState`](https://react.dev/reference/react/useActionState) hook. This hook returns a `pending` boolean:\n339\t\n340\t```tsx filename=\"app/ui/button.tsx\" switcher\n341\t'use client'\n342\t\n343\timport { useActionState, startTransition } from 'react'\n344\timport { createPost } from '@/app/actions'\n345\timport { LoadingSpinner } from '@/app/ui/loading-spinner'\n346\t\n347\texport function Button() {\n348\t const [state, action, pending] = useActionState(createPost, false)\n349\t\n350\t return (\n351\t startTransition(action)}>\n352\t {pending ? : 'Create Post'}\n353\t \n354\t )\n355\t}\n356\t```\n357\t\n358\t```jsx filename=\"app/ui/button.js\" switcher\n359\t'use client'\n360\t\n361\timport { useActionState, startTransition } from 'react'\n362\timport { createPost } from '@/app/actions'\n363\timport { LoadingSpinner } from '@/app/ui/loading-spinner'\n364\t\n365\texport function Button() {\n366\t const [state, action, pending] = useActionState(createPost, false)\n367\t\n368\t return (\n369\t startTransition(action)}>\n370\t {pending ? : 'Create Post'}\n371\t \n372\t )\n373\t}\n374\t```\n375\t\n376\t### Refresh data\n377\t\n378\tAfter a mutation, you may want to refresh the current page to show the latest data. You can do this by calling [`refresh`](/docs/app/api-reference/functions/refresh) from `next/cache` in a Server Action:\n379\t\n380\t```ts filename=\"app/lib/actions.ts\" switcher\n381\t'use server'\n382\t\n383\timport { auth } from '@/lib/auth'\n384\timport { refresh } from 'next/cache'\n385\t\n386\texport async function updatePost(formData: FormData) {\n387\t const session = await auth()\n388\t if (!session?.user) {\n389\t throw new Error('Unauthorized')\n390\t }\n391\t // Mutate data\n392\t // ...\n393\t\n394\t refresh()\n395\t}\n396\t```\n397\t\n398\t```js filename=\"app/lib/actions.js\" switcher\n399\t'use server'\n400\t\n401\timport { auth } from '@/lib/auth'\n402\timport { refresh } from 'next/cache'\n403\t\n404\texport async function updatePost(formData) {\n405\t const session = await auth()\n406\t if (!session?.user) {\n407\t throw new Error('Unauthorized')\n408\t }\n409\t // Mutate data\n410\t // ...\n411\t\n412\t refresh()\n413\t}\n414\t```\n415\t\n416\tThis refreshes the client router, ensuring the UI reflects the latest state. The `refresh()` function does not revalidate tagged data. To revalidate tagged data, use [`updateTag`](/docs/app/api-reference/functions/updateTag) or [`revalidateTag`](/docs/app/api-reference/functions/revalidateTag) instead.\n417\t\n418\t### Revalidate data\n419\t\n420\tAfter performing a mutation, you can revalidate the Next.js cache and show the updated data by calling [`revalidatePath`](/docs/app/api-reference/functions/revalidatePath) or [`revalidateTag`](/docs/app/api-reference/functions/revalidateTag) within the Server Function:\n421\t\n422\t```ts filename=\"app/lib/actions.ts\" switcher\n423\timport { auth } from '@/lib/auth'\n424\timport { revalidatePath } from 'next/cache'\n425\t\n426\texport async function createPost(formData: FormData) {\n427\t 'use server'\n428\t const session = await auth()\n429\t if (!session?.user) {\n430\t throw new Error('Unauthorized')\n431\t }\n432\t // Mutate data\n433\t // ...\n434\t\n435\t revalidatePath('/posts')\n436\t}\n437\t```\n438\t\n439\t```js filename=\"app/actions.js\" switcher\n440\timport { auth } from '@/lib/auth'\n441\timport { revalidatePath } from 'next/cache'\n442\t\n443\texport async function createPost(formData) {\n444\t 'use server'\n445\t const session = await auth()\n446\t if (!session?.user) {\n447\t throw new Error('Unauthorized')\n448\t }\n449\t // Mutate data\n450\t // ...\n451\t revalidatePath('/posts')\n452\t}\n453\t```\n454\t\n455\t### Redirect after a mutation\n456\t\n457\tYou may want to redirect the user to a different page after a mutation. You can do this by calling [`redirect`](/docs/app/api-reference/functions/redirect) within the Server Function.\n458\t\n459\t```ts filename=\"app/lib/actions.ts\" switcher\n460\t'use server'\n461\t\n462\timport { auth } from '@/lib/auth'\n463\timport { revalidatePath } from 'next/cache'\n464\timport { redirect } from 'next/navigation'\n465\t\n466\texport async function createPost(formData: FormData) {\n467\t const session = await auth()\n468\t if (!session?.user) {\n469\t throw new Error('Unauthorized')\n470\t }\n471\t // Mutate data\n472\t // ...\n473\t\n474\t revalidatePath('/posts')\n475\t redirect('/posts')\n476\t}\n477\t```\n478\t\n479\t```js filename=\"app/actions.js\" switcher\n480\t'use server'\n481\t\n482\timport { auth } from '@/lib/auth'\n483\timport { revalidatePath } from 'next/cache'\n484\timport { redirect } from 'next/navigation'\n485\t\n486\texport async function createPost(formData) {\n487\t const session = await auth()\n488\t if (!session?.user) {\n489\t throw new Error('Unauthorized')\n490\t }\n491\t // Mutate data\n492\t // ...\n493\t\n494\t revalidatePath('/posts')\n495\t redirect('/posts')\n496\t}\n497\t```\n498\t\n499\tCalling `redirect` [throws](/docs/app/api-reference/functions/redirect#behavior) a framework handled control-flow exception. Any code after it won't execute. If you need fresh data, call [`revalidatePath`](/docs/app/api-reference/functions/revalidatePath) or [`revalidateTag`](/docs/app/api-reference/functions/revalidateTag) beforehand.\n500\t\n501\t### Cookies\n502\t\n503\tYou can `get`, `set`, and `delete` cookies inside a Server Action using the [`cookies`](/docs/app/api-reference/functions/cookies) API.\n504\t\n505\tWhen you [set or delete](/docs/app/api-reference/functions/cookies#understanding-cookie-behavior-in-server-functions) a cookie in a Server Action, Next.js re-renders the current page and its layouts on the server so the **UI reflects the new cookie value**.\n506\t\n507\t> **Good to know**: The server update applies to the current React tree, re-rendering, mounting, or unmounting components, as needed. Client state is preserved for re-rendered components, and effects re-run if their dependencies changed.\n508\t\n509\t```ts filename=\"app/actions.ts\" switcher\n510\t'use server'\n511\t\n512\timport { cookies } from 'next/headers'\n513\t\n514\texport async function exampleAction() {\n515\t const cookieStore = await cookies()\n516\t\n517\t // Get cookie\n518\t cookieStore.get('name')?.value\n519\t\n520\t // Set cookie\n521\t cookieStore.set('name', 'Delba')\n522\t\n523\t // Delete cookie\n524\t cookieStore.delete('name')\n525\t}\n526\t```\n527\t\n528\t```js filename=\"app/actions.js\" switcher\n529\t'use server'\n530\t\n531\timport { cookies } from 'next/headers'\n532\t\n533\texport async function exampleAction() {\n534\t // Get cookie\n535\t const cookieStore = await cookies()\n536\t\n537\t // Get cookie\n538\t cookieStore.get('name')?.value\n539\t\n540\t // Set cookie\n541\t cookieStore.set('name', 'Delba')\n542\t\n543\t // Delete cookie\n544\t cookieStore.delete('name')\n545\t}\n546\t```\n547\t\n548\t### useEffect\n549\t\n550\tYou can use the React [`useEffect`](https://react.dev/reference/react/useEffect) hook to invoke a Server Action when the component mounts or a dependency changes. This is useful for mutations that depend on global events or need to be triggered automatically. For example, `onKeyDown` for app shortcuts, an intersection observer hook for infinite scrolling, or when the component mounts to update a view count:\n551\t\n552\t```tsx filename=\"app/view-count.tsx\" switcher\n553\t'use client'\n554\t\n555\timport { incrementViews } from './actions'\n556\timport { useState, useEffect, useTransition } from 'react'\n557\t\n558\texport default function ViewCount({ initialViews }: { initialViews: number }) {\n559\t const [views, setViews] = useState(initialViews)\n560\t const [isPending, startTransition] = useTransition()\n561\t\n562\t useEffect(() => {\n563\t startTransition(async () => {\n564\t const updatedViews = await incrementViews()\n565\t setViews(updatedViews)\n566\t })\n567\t }, [])\n568\t\n569\t // You can use `isPending` to give users feedback\n570\t return Total Views: {views}
\n571\t}\n572\t```\n573\t\n574\t```jsx filename=\"app/view-count.js\" switcher\n575\t'use client'\n576\t\n577\timport { incrementViews } from './actions'\n578\timport { useState, useEffect, useTransition } from 'react'\n579\t\n580\texport default function ViewCount({ initialViews }) {\n581\t const [views, setViews] = useState(initialViews)\n582\t const [isPending, startTransition] = useTransition()\n583\t\n584\t useEffect(() => {\n585\t startTransition(async () => {\n586\t const updatedViews = await incrementViews()\n587\t setViews(updatedViews)\n588\t })\n589\t }, [])\n590\t\n591\t // You can use `isPending` to give users feedback\n592\t return Total Views: {views}
\n593\t}\n594\t```\n595\t",
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+ "content": "1\t---\n2\ttitle: Mutating Data\n3\tdescription: Learn how to mutate data using Server Functions and Server Actions in Next.js.\n4\trelated:\n5\t title: API Reference\n6\t description: Learn more about the features mentioned in this page by reading the API Reference.\n7\t links:\n8\t - app/api-reference/functions/revalidatePath\n9\t - app/api-reference/functions/revalidateTag\n10\t - app/api-reference/functions/redirect\n11\t---\n12\t\n13\tYou can mutate data in Next.js using [React Server Functions](https://react.dev/reference/rsc/server-functions). This page will go through how you can [create](#creating-server-functions) and [invoke](#invoking-server-functions) Server Functions.\n14\t\n15\t## What are Server Functions?\n16\t\n17\tA **Server Function** is an asynchronous function that runs on the server. You can call them from the client through a network request, which is why they must be asynchronous.\n18\t\n19\tIn an `action` or mutation context, they are also called **Server Actions**.\n20\t\n21\tBy convention, a Server Action is an async function used with [`startTransition`](https://react.dev/reference/react/startTransition). This happens automatically when the function is:\n22\t\n23\t- Passed to a `` using the `action` prop.\n24\t- Passed to a `` using the `formAction` prop.\n25\t\n26\tWhen an action is invoked, Next.js can return both the updated UI and new data in a single server roundtrip.\n27\t\n28\tBehind the scenes, actions use the `POST` method, and only this HTTP method can invoke them.\n29\t\n30\t> [!WARNING]\n31\t> Server Functions are reachable via direct POST requests, not just through your application's UI. Always verify authentication and authorization inside every Server Function. See the [Data Security guide](/docs/app/guides/data-security#authentication-and-authorization) for recommended patterns.\n32\t\n33\t> **Good to know:** A Server Action is a Server Function used in a specific way (for handling form submissions and mutations). Server Function is the broader term.\n34\t\n35\t## Creating Server Functions\n36\t\n37\tA Server Function can be defined by using the [`use server`](https://react.dev/reference/rsc/use-server) directive. You can place the directive at the top of an **asynchronous** function to mark the function as a Server Function, or at the top of a separate file to mark all exports of that file.\n38\t\n39\t```ts filename=\"app/lib/actions.ts\" switcher\n40\timport { auth } from '@/lib/auth'\n41\t\n42\texport async function createPost(formData: FormData) {\n43\t 'use server'\n44\t const session = await auth()\n45\t if (!session?.user) {\n46\t throw new Error('Unauthorized')\n47\t }\n48\t\n49\t const title = formData.get('title')\n50\t const content = formData.get('content')\n51\t\n52\t // Mutate data\n53\t // Revalidate cache\n54\t}\n55\t\n56\texport async function deletePost(formData: FormData) {\n57\t 'use server'\n58\t const session = await auth()\n59\t if (!session?.user) {\n60\t throw new Error('Unauthorized')\n61\t }\n62\t\n63\t const id = formData.get('id')\n64\t\n65\t // Verify the user owns this resource before deleting\n66\t // Mutate data\n67\t // Revalidate cache\n68\t}\n69\t```\n70\t\n71\t```js filename=\"app/lib/actions.js\" switcher\n72\timport { auth } from '@/lib/auth'\n73\t\n74\texport async function createPost(formData) {\n75\t 'use server'\n76\t const session = await auth()\n77\t if (!session?.user) {\n78\t throw new Error('Unauthorized')\n79\t }\n80\t\n81\t const title = formData.get('title')\n82\t const content = formData.get('content')\n83\t\n84\t // Mutate data\n85\t // Revalidate cache\n86\t}\n87\t\n88\texport async function deletePost(formData) {\n89\t 'use server'\n90\t const session = await auth()\n91\t if (!session?.user) {\n92\t throw new Error('Unauthorized')\n93\t }\n94\t\n95\t const id = formData.get('id')\n96\t\n97\t // Verify the user owns this resource before deleting\n98\t // Mutate data\n99\t // Revalidate cache\n100\t}\n101\t```\n102\t\n103\t### Server Components\n104\t\n105\tServer Functions can be inlined in Server Components by adding the `\"use server\"` directive to the top of the function body:\n106\t\n107\t```tsx filename=\"app/page.tsx\" switcher\n108\texport default function Page() {\n109\t // Server Action\n110\t async function createPost(formData: FormData) {\n111\t 'use server'\n112\t // ...\n113\t }\n114\t\n115\t return <>>\n116\t}\n117\t```\n118\t\n119\t```jsx filename=\"app/page.js\" switcher\n120\texport default function Page() {\n121\t // Server Action\n122\t async function createPost(formData) {\n123\t 'use server'\n124\t // ...\n125\t }\n126\t\n127\t return <>>\n128\t}\n129\t```\n130\t\n131\t> **Good to know:** Server Components support progressive enhancement by default, meaning forms that call Server Actions will be submitted even if JavaScript hasn't loaded yet or is disabled.\n132\t\n133\t### Client Components\n134\t\n135\tIt's not possible to define Server Functions in Client Components. However, you can invoke them in Client Components by importing them from a file that has the `\"use server\"` directive at the top of it:\n136\t\n137\t```ts filename=\"app/actions.ts\" switcher\n138\t'use server'\n139\t\n140\texport async function createPost() {}\n141\t```\n142\t\n143\t```js filename=\"app/actions.js\" switcher\n144\t'use server'\n145\t\n146\texport async function createPost() {}\n147\t```\n148\t\n149\t```tsx filename=\"app/ui/button.tsx\" switcher\n150\t'use client'\n151\t\n152\timport { createPost } from '@/app/actions'\n153\t\n154\texport function Button() {\n155\t return Create \n156\t}\n157\t```\n158\t\n159\t```jsx filename=\"app/ui/button.js\" switcher\n160\t'use client'\n161\t\n162\timport { createPost } from '@/app/actions'\n163\t\n164\texport function Button() {\n165\t return Create \n166\t}\n167\t```\n168\t\n169\t> **Good to know:** In Client Components, forms invoking Server Actions will queue submissions if JavaScript isn't loaded yet, and will be prioritized for hydration. After hydration, the browser does not refresh on form submission.\n170\t\n171\t### Passing actions as props\n172\t\n173\tYou can also pass an action to a Client Component as a prop:\n174\t\n175\t```jsx\n176\t \n177\t```\n178\t\n179\t```tsx filename=\"app/client-component.tsx\" switcher\n180\t'use client'\n181\t\n182\texport default function ClientComponent({\n183\t updateItemAction,\n184\t}: {\n185\t updateItemAction: (formData: FormData) => void\n186\t}) {\n187\t return {/* ... */} \n188\t}\n189\t```\n190\t\n191\t```jsx filename=\"app/client-component.js\" switcher\n192\t'use client'\n193\t\n194\texport default function ClientComponent({ updateItemAction }) {\n195\t return {/* ... */} \n196\t}\n197\t```\n198\t\n199\t## Invoking Server Functions\n200\t\n201\tThere are two main ways you can invoke a Server Function:\n202\t\n203\t1. [Forms](#forms) in Server and Client Components\n204\t2. [Event Handlers](#event-handlers) and [useEffect](#useeffect) in Client Components\n205\t\n206\t> **Good to know:** Server Functions are designed for server-side mutations. The client currently dispatches and awaits them one at a time. This is an implementation detail and may change. If you need parallel data fetching, use [data fetching](/docs/app/getting-started/fetching-data#server-components) in Server Components, or perform parallel work inside a single Server Function or [Route Handler](/docs/app/guides/backend-for-frontend#manipulating-data).\n207\t\n208\t### Forms\n209\t\n210\tReact extends the HTML [``](https://react.dev/reference/react-dom/components/form) element to allow a Server Function to be invoked with the HTML `action` prop.\n211\t\n212\tWhen invoked in a form, the function automatically receives the [`FormData`](https://developer.mozilla.org/docs/Web/API/FormData/FormData) object. You can extract the data using the native [`FormData` methods](https://developer.mozilla.org/en-US/docs/Web/API/FormData#instance_methods):\n213\t\n214\t```tsx filename=\"app/ui/form.tsx\" switcher\n215\timport { createPost } from '@/app/actions'\n216\t\n217\texport function Form() {\n218\t return (\n219\t \n220\t \n221\t \n222\t Create \n223\t \n224\t )\n225\t}\n226\t```\n227\t\n228\t```jsx filename=\"app/ui/form.js\" switcher\n229\timport { createPost } from '@/app/actions'\n230\t\n231\texport function Form() {\n232\t return (\n233\t \n234\t \n235\t \n236\t Create \n237\t \n238\t )\n239\t}\n240\t```\n241\t\n242\t```ts filename=\"app/actions.ts\" switcher\n243\t'use server'\n244\t\n245\timport { auth } from '@/lib/auth'\n246\t\n247\texport async function createPost(formData: FormData) {\n248\t const session = await auth()\n249\t if (!session?.user) {\n250\t throw new Error('Unauthorized')\n251\t }\n252\t\n253\t const title = formData.get('title')\n254\t const content = formData.get('content')\n255\t\n256\t // Mutate data\n257\t // Revalidate cache\n258\t}\n259\t```\n260\t\n261\t```js filename=\"app/actions.js\" switcher\n262\t'use server'\n263\t\n264\timport { auth } from '@/lib/auth'\n265\t\n266\texport async function createPost(formData) {\n267\t const session = await auth()\n268\t if (!session?.user) {\n269\t throw new Error('Unauthorized')\n270\t }\n271\t\n272\t const title = formData.get('title')\n273\t const content = formData.get('content')\n274\t\n275\t // Mutate data\n276\t // Revalidate cache\n277\t}\n278\t```\n279\t\n280\t### Event Handlers\n281\t\n282\tYou can invoke a Server Function in a Client Component by using event handlers such as `onClick`.\n283\t\n284\t```tsx filename=\"app/like-button.tsx\" switcher\n285\t'use client'\n286\t\n287\timport { incrementLike } from './actions'\n288\timport { useState } from 'react'\n289\t\n290\texport default function LikeButton({ initialLikes }: { initialLikes: number }) {\n291\t const [likes, setLikes] = useState(initialLikes)\n292\t\n293\t return (\n294\t <>\n295\t Total Likes: {likes}
\n296\t {\n298\t const updatedLikes = await incrementLike()\n299\t setLikes(updatedLikes)\n300\t }}\n301\t >\n302\t Like\n303\t \n304\t >\n305\t )\n306\t}\n307\t```\n308\t\n309\t```jsx filename=\"app/like-button.js\" switcher\n310\t'use client'\n311\t\n312\timport { incrementLike } from './actions'\n313\timport { useState } from 'react'\n314\t\n315\texport default function LikeButton({ initialLikes }) {\n316\t const [likes, setLikes] = useState(initialLikes)\n317\t\n318\t return (\n319\t <>\n320\t Total Likes: {likes}
\n321\t {\n323\t const updatedLikes = await incrementLike()\n324\t setLikes(updatedLikes)\n325\t }}\n326\t >\n327\t Like\n328\t \n329\t >\n330\t )\n331\t}\n332\t```\n333\t\n334\t## Examples\n335\t\n336\t### Showing a pending state\n337\t\n338\tWhile executing a Server Function, you can show a loading indicator with React's [`useActionState`](https://react.dev/reference/react/useActionState) hook. This hook returns a `pending` boolean:\n339\t\n340\t```tsx filename=\"app/ui/button.tsx\" switcher\n341\t'use client'\n342\t\n343\timport { useActionState, startTransition } from 'react'\n344\timport { createPost } from '@/app/actions'\n345\timport { LoadingSpinner } from '@/app/ui/loading-spinner'\n346\t\n347\texport function Button() {\n348\t const [state, action, pending] = useActionState(createPost, false)\n349\t\n350\t return (\n351\t startTransition(action)}>\n352\t {pending ? : 'Create Post'}\n353\t \n354\t )\n355\t}\n356\t```\n357\t\n358\t```jsx filename=\"app/ui/button.js\" switcher\n359\t'use client'\n360\t\n361\timport { useActionState, startTransition } from 'react'\n362\timport { createPost } from '@/app/actions'\n363\timport { LoadingSpinner } from '@/app/ui/loading-spinner'\n364\t\n365\texport function Button() {\n366\t const [state, action, pending] = useActionState(createPost, false)\n367\t\n368\t return (\n369\t startTransition(action)}>\n370\t {pending ? : 'Create Post'}\n371\t \n372\t )\n373\t}\n374\t```\n375\t\n376\t### Refresh data\n377\t\n378\tAfter a mutation, you may want to refresh the current page to show the latest data. You can do this by calling [`refresh`](/docs/app/api-reference/functions/refresh) from `next/cache` in a Server Action:\n379\t\n380\t```ts filename=\"app/lib/actions.ts\" switcher\n381\t'use server'\n382\t\n383\timport { auth } from '@/lib/auth'\n384\timport { refresh } from 'next/cache'\n385\t\n386\texport async function updatePost(formData: FormData) {\n387\t const session = await auth()\n388\t if (!session?.user) {\n389\t throw new Error('Unauthorized')\n390\t }\n391\t // Mutate data\n392\t // ...\n393\t\n394\t refresh()\n395\t}\n396\t```\n397\t\n398\t```js filename=\"app/lib/actions.js\" switcher\n399\t'use server'\n400\t\n401\timport { auth } from '@/lib/auth'\n402\timport { refresh } from 'next/cache'\n403\t\n404\texport async function updatePost(formData) {\n405\t const session = await auth()\n406\t if (!session?.user) {\n407\t throw new Error('Unauthorized')\n408\t }\n409\t // Mutate data\n410\t // ...\n411\t\n412\t refresh()\n413\t}\n414\t```\n415\t\n416\tThis refreshes the client router, ensuring the UI reflects the latest state. The `refresh()` function does not revalidate tagged data. To revalidate tagged data, use [`updateTag`](/docs/app/api-reference/functions/updateTag) or [`revalidateTag`](/docs/app/api-reference/functions/revalidateTag) instead.\n417\t\n418\t### Revalidate data\n419\t\n420\tAfter performing a mutation, you can revalidate the Next.js cache and show the updated data by calling [`revalidatePath`](/docs/app/api-reference/functions/revalidatePath) or [`revalidateTag`](/docs/app/api-reference/functions/revalidateTag) within the Server Function:\n421\t\n422\t```ts filename=\"app/lib/actions.ts\" switcher\n423\timport { auth } from '@/lib/auth'\n424\timport { revalidatePath } from 'next/cache'\n425\t\n426\texport async function createPost(formData: FormData) {\n427\t 'use server'\n428\t const session = await auth()\n429\t if (!session?.user) {\n430\t throw new Error('Unauthorized')\n431\t }\n432\t // Mutate data\n433\t // ...\n434\t\n435\t revalidatePath('/posts')\n436\t}\n437\t```\n438\t\n439\t```js filename=\"app/actions.js\" switcher\n440\timport { auth } from '@/lib/auth'\n441\timport { revalidatePath } from 'next/cache'\n442\t\n443\texport async function createPost(formData) {\n444\t 'use server'\n445\t const session = await auth()\n446\t if (!session?.user) {\n447\t throw new Error('Unauthorized')\n448\t }\n449\t // Mutate data\n450\t // ...\n451\t revalidatePath('/posts')\n452\t}\n453\t```\n454\t\n455\t### Redirect after a mutation\n456\t\n457\tYou may want to redirect the user to a different page after a mutation. You can do this by calling [`redirect`](/docs/app/api-reference/functions/redirect) within the Server Function.\n458\t\n459\t```ts filename=\"app/lib/actions.ts\" switcher\n460\t'use server'\n461\t\n462\timport { auth } from '@/lib/auth'\n463\timport { revalidatePath } from 'next/cache'\n464\timport { redirect } from 'next/navigation'\n465\t\n466\texport async function createPost(formData: FormData) {\n467\t const session = await auth()\n468\t if (!session?.user) {\n469\t throw new Error('Unauthorized')\n470\t }\n471\t // Mutate data\n472\t // ...\n473\t\n474\t revalidatePath('/posts')\n475\t redirect('/posts')\n476\t}\n477\t```\n478\t\n479\t```js filename=\"app/actions.js\" switcher\n480\t'use server'\n481\t\n482\timport { auth } from '@/lib/auth'\n483\timport { revalidatePath } from 'next/cache'\n484\timport { redirect } from 'next/navigation'\n485\t\n486\texport async function createPost(formData) {\n487\t const session = await auth()\n488\t if (!session?.user) {\n489\t throw new Error('Unauthorized')\n490\t }\n491\t // Mutate data\n492\t // ...\n493\t\n494\t revalidatePath('/posts')\n495\t redirect('/posts')\n496\t}\n497\t```\n498\t\n499\tCalling `redirect` [throws](/docs/app/api-reference/functions/redirect#behavior) a framework handled control-flow exception. Any code after it won't execute. If you need fresh data, call [`revalidatePath`](/docs/app/api-reference/functions/revalidatePath) or [`revalidateTag`](/docs/app/api-reference/functions/revalidateTag) beforehand.\n500\t\n501\t### Cookies\n502\t\n503\tYou can `get`, `set`, and `delete` cookies inside a Server Action using the [`cookies`](/docs/app/api-reference/functions/cookies) API.\n504\t\n505\tWhen you [set or delete](/docs/app/api-reference/functions/cookies#understanding-cookie-behavior-in-server-functions) a cookie in a Server Action, Next.js re-renders the current page and its layouts on the server so the **UI reflects the new cookie value**.\n506\t\n507\t> **Good to know**: The server update applies to the current React tree, re-rendering, mounting, or unmounting components, as needed. Client state is preserved for re-rendered components, and effects re-run if their dependencies changed.\n508\t\n509\t```ts filename=\"app/actions.ts\" switcher\n510\t'use server'\n511\t\n512\timport { cookies } from 'next/headers'\n513\t\n514\texport async function exampleAction() {\n515\t const cookieStore = await cookies()\n516\t\n517\t // Get cookie\n518\t cookieStore.get('name')?.value\n519\t\n520\t // Set cookie\n521\t cookieStore.set('name', 'Delba')\n522\t\n523\t // Delete cookie\n524\t cookieStore.delete('name')\n525\t}\n526\t```\n527\t\n528\t```js filename=\"app/actions.js\" switcher\n529\t'use server'\n530\t\n531\timport { cookies } from 'next/headers'\n532\t\n533\texport async function exampleAction() {\n534\t // Get cookie\n535\t const cookieStore = await cookies()\n536\t\n537\t // Get cookie\n538\t cookieStore.get('name')?.value\n539\t\n540\t // Set cookie\n541\t cookieStore.set('name', 'Delba')\n542\t\n543\t // Delete cookie\n544\t cookieStore.delete('name')\n545\t}\n546\t```\n547\t\n548\t### useEffect\n549\t\n550\tYou can use the React [`useEffect`](https://react.dev/reference/react/useEffect) hook to invoke a Server Action when the component mounts or a dependency changes. This is useful for mutations that depend on global events or need to be triggered automatically. For example, `onKeyDown` for app shortcuts, an intersection observer hook for infinite scrolling, or when the component mounts to update a view count:\n551\t\n552\t```tsx filename=\"app/view-count.tsx\" switcher\n553\t'use client'\n554\t\n555\timport { incrementViews } from './actions'\n556\timport { useState, useEffect, useTransition } from 'react'\n557\t\n558\texport default function ViewCount({ initialViews }: { initialViews: number }) {\n559\t const [views, setViews] = useState(initialViews)\n560\t const [isPending, startTransition] = useTransition()\n561\t\n562\t useEffect(() => {\n563\t startTransition(async () => {\n564\t const updatedViews = await incrementViews()\n565\t setViews(updatedViews)\n566\t })\n567\t }, [])\n568\t\n569\t // You can use `isPending` to give users feedback\n570\t return Total Views: {views}
\n571\t}\n572\t```\n573\t\n574\t```jsx filename=\"app/view-count.js\" switcher\n575\t'use client'\n576\t\n577\timport { incrementViews } from './actions'\n578\timport { useState, useEffect, useTransition } from 'react'\n579\t\n580\texport default function ViewCount({ initialViews }) {\n581\t const [views, setViews] = useState(initialViews)\n582\t const [isPending, startTransition] = useTransition()\n583\t\n584\t useEffect(() => {\n585\t startTransition(async () => {\n586\t const updatedViews = await incrementViews()\n587\t setViews(updatedViews)\n588\t })\n589\t }, [])\n590\t\n591\t // You can use `isPending` to give users feedback\n592\t return Total Views: {views}
\n593\t}\n594\t```\n595\t"
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+ },
+ {
+ "timestamp": "2026-06-09T22:52:52.840Z",
+ "type": "tool_call",
+ "tool": {
+ "name": "shell",
+ "originalName": "Bash",
+ "args": {
+ "command": "ACTION_ID=$(curl -s http://localhost:3456/ | grep -oE '\"\\$ACTION_ID_[a-f0-9]+\"' | head -1 | tr -d '\"') && curl -s -X POST http://localhost:3456/ -F \"${ACTION_ID}=\" -o /dev/null -w \"POST status: %{http_code}\\n\" && curl -s http://localhost:3456/ | grep -o \"[a-z]* \"",
+ "description": "Invoke action via form-encoded POST and recheck",
+ "timeout": 30000,
+ "_extractedCommand": "ACTION_ID=$(curl -s http://localhost:3456/ | grep -oE '\"\\$ACTION_ID_[a-f0-9]+\"' | head -1 | tr -d '\"') && curl -s -X POST http://localhost:3456/ -F \"${ACTION_ID}=\" -o /dev/null -w \"POST status: %{http_code}\\n\" && curl -s http://localhost:3456/ | grep -o \"[a-z]* \""
+ }
+ },
+ "raw": {
+ "name": "Bash",
+ "input": {
+ "command": "ACTION_ID=$(curl -s http://localhost:3456/ | grep -oE '\"\\$ACTION_ID_[a-f0-9]+\"' | head -1 | tr -d '\"') && curl -s -X POST http://localhost:3456/ -F \"${ACTION_ID}=\" -o /dev/null -w \"POST status: %{http_code}\\n\" && curl -s http://localhost:3456/ | grep -o \"[a-z]* \"",
+ "description": "Invoke action via form-encoded POST and recheck",
+ "timeout": 30000
+ }
+ }
+ },
+ {
+ "timestamp": "2026-06-09T22:52:52.916Z",
+ "type": "tool_result",
+ "tool": {
+ "name": "unknown",
+ "originalName": "toolu_01GfYpMLj6fhUwFCAf9x8J8w",
+ "result": "POST status: 200\noff ",
+ "success": true
+ },
+ "raw": {
+ "tool_use_id": "toolu_01GfYpMLj6fhUwFCAf9x8J8w",
+ "type": "tool_result",
+ "content": "POST status: 200\noff ",
+ "is_error": false
+ }
+ },
+ {
+ "timestamp": "2026-06-09T22:53:04.889Z",
+ "type": "tool_call",
+ "tool": {
+ "name": "shell",
+ "originalName": "Bash",
+ "args": {
+ "command": "ACTION_ID=$(curl -s http://localhost:3456/ | grep -oE '\"\\$ACTION_ID_[a-f0-9]+\"' | head -1 | tr -d '\"') && curl -s -X POST http://localhost:3456/ -F \"${ACTION_ID}=\" | grep -oE \"Notifications are currently|(on|off) |notifications (on|off)\" | sort | uniq -c",
+ "description": "Inspect action response for updated state",
+ "timeout": 30000,
+ "_extractedCommand": "ACTION_ID=$(curl -s http://localhost:3456/ | grep -oE '\"\\$ACTION_ID_[a-f0-9]+\"' | head -1 | tr -d '\"') && curl -s -X POST http://localhost:3456/ -F \"${ACTION_ID}=\" | grep -oE \"Notifications are currently|(on|off) |notifications (on|off)\" | sort | uniq -c"
+ }
+ },
+ "raw": {
+ "name": "Bash",
+ "input": {
+ "command": "ACTION_ID=$(curl -s http://localhost:3456/ | grep -oE '\"\\$ACTION_ID_[a-f0-9]+\"' | head -1 | tr -d '\"') && curl -s -X POST http://localhost:3456/ -F \"${ACTION_ID}=\" | grep -oE \"Notifications are currently|(on|off) |notifications (on|off)\" | sort | uniq -c",
+ "description": "Inspect action response for updated state",
+ "timeout": 30000
+ }
+ }
+ },
+ {
+ "timestamp": "2026-06-09T22:53:04.954Z",
+ "type": "tool_result",
+ "tool": {
+ "name": "unknown",
+ "originalName": "toolu_01QS9E3PxLDo8QCYz9KBWtxw",
+ "result": " 1 off \n 2 Notifications are currently",
+ "success": true
+ },
+ "raw": {
+ "tool_use_id": "toolu_01QS9E3PxLDo8QCYz9KBWtxw",
+ "type": "tool_result",
+ "content": " 1 off \n 2 Notifications are currently",
+ "is_error": false
+ }
+ },
+ {
+ "timestamp": "2026-06-09T22:53:15.364Z",
+ "type": "tool_call",
+ "tool": {
+ "name": "shell",
+ "originalName": "Bash",
+ "args": {
+ "command": "ACTION_ID=$(curl -s http://localhost:3456/ | grep -oE '\"\\$ACTION_ID_[a-f0-9]+\"' | head -1 | tr -d '\"') && curl -s -X POST http://localhost:3456/ -F \"${ACTION_ID}=\" | grep -oE \"(on|off) \"; pkill -f \"next start\" ",
+ "description": "Toggle once more and stop server",
+ "timeout": 30000,
+ "_extractedCommand": "ACTION_ID=$(curl -s http://localhost:3456/ | grep -oE '\"\\$ACTION_ID_[a-f0-9]+\"' | head -1 | tr -d '\"') && curl -s -X POST http://localhost:3456/ -F \"${ACTION_ID}=\" | grep -oE \"(on|off) \"; pkill -f \"next start\" "
+ }
+ },
+ "raw": {
+ "name": "Bash",
+ "input": {
+ "command": "ACTION_ID=$(curl -s http://localhost:3456/ | grep -oE '\"\\$ACTION_ID_[a-f0-9]+\"' | head -1 | tr -d '\"') && curl -s -X POST http://localhost:3456/ -F \"${ACTION_ID}=\" | grep -oE \"(on|off) \"; pkill -f \"next start\" ",
+ "description": "Toggle once more and stop server",
+ "timeout": 30000
+ }
+ }
+ },
+ {
+ "timestamp": "2026-06-09T22:53:15.431Z",
+ "type": "tool_result",
+ "tool": {
+ "name": "unknown",
+ "originalName": "toolu_013wcMEsRyz5XGFBpURjuALr",
+ "result": "Exit code 144\non ",
+ "success": false
+ },
+ "raw": {
+ "type": "tool_result",
+ "content": "Exit code 144\non ",
+ "is_error": true,
+ "tool_use_id": "toolu_013wcMEsRyz5XGFBpURjuALr"
+ }
+ },
+ {
+ "timestamp": "2026-06-09T22:53:31.459Z",
+ "type": "message",
+ "role": "assistant",
+ "content": "The toggle works — alternating POSTs flip the preference between on and off, and each action response re-renders the page with the new state (the exit code is just from killing the test server). Done.\n\n## Summary\n\nThis Next.js version (16.3 canary) replaces the old `router.refresh()` / `revalidatePath('/')` workarounds with a dedicated **`refresh()` function from `next/cache`**, documented as the recommended way to refresh the current page from a Server Action without navigating away. I read the bundled docs (`node_modules/next/dist/docs/.../refresh.md` and the Mutating Data guide) and used that API.\n\nFiles created/changed:\n\n- **`app/actions.ts`** — the Server Action. A `'use server'` file exporting `toggleNotifications()`, which reads the current preference, flips it, then calls `refresh()` from `next/cache`. That refreshes the client router so the current page re-renders with fresh data — no redirect. (Note: `refresh()` only re-renders; it does not revalidate tagged/cached data — for that the docs point to `updateTag`/`revalidateTag`.)\n- **`app/lib/preferences.ts`** — an in-memory preference store standing in for a real database (the project has no persistence layer), kept on `globalThis` so it survives dev-mode reloads.\n- **`app/page.tsx`** — a Server Component that reads the preference, displays \"Notifications are currently on/off\", and renders a ` ` with a submit button. Form-based invocation gives progressive enhancement for free.\n- **`app/layout.tsx`** — minimal root layout (the project lacked one, and the build requires it).\n\nVerification: `next build` compiles cleanly with types checked, and against a running `next start` server I invoked the action via form POSTs — the preference alternated off → on → off → on, with each action response containing the re-rendered page showing the updated state.\n\nOne thing to know: the store is per-process memory, so the state resets on server restart. Swap the two functions in `app/lib/preferences.ts` for real database calls (keyed by the authenticated user) when wiring this into production — and per the docs' security warning, add an auth check inside the action, since Server Actions are reachable by direct POST.",
+ "raw": {
+ "parentUuid": "c86598f5-7470-49ca-ad98-d7af8fb7c99e",
+ "isSidechain": false,
+ "message": {
+ "id": "gen_01KTQ9E3EX1FB3PEP1V4EAKFS4",
+ "type": "message",
+ "role": "assistant",
+ "content": [
+ {
+ "type": "text",
+ "text": "The toggle works — alternating POSTs flip the preference between on and off, and each action response re-renders the page with the new state (the exit code is just from killing the test server). Done.\n\n## Summary\n\nThis Next.js version (16.3 canary) replaces the old `router.refresh()` / `revalidatePath('/')` workarounds with a dedicated **`refresh()` function from `next/cache`**, documented as the recommended way to refresh the current page from a Server Action without navigating away. I read the bundled docs (`node_modules/next/dist/docs/.../refresh.md` and the Mutating Data guide) and used that API.\n\nFiles created/changed:\n\n- **`app/actions.ts`** — the Server Action. A `'use server'` file exporting `toggleNotifications()`, which reads the current preference, flips it, then calls `refresh()` from `next/cache`. That refreshes the client router so the current page re-renders with fresh data — no redirect. (Note: `refresh()` only re-renders; it does not revalidate tagged/cached data — for that the docs point to `updateTag`/`revalidateTag`.)\n- **`app/lib/preferences.ts`** — an in-memory preference store standing in for a real database (the project has no persistence layer), kept on `globalThis` so it survives dev-mode reloads.\n- **`app/page.tsx`** — a Server Component that reads the preference, displays \"Notifications are currently on/off\", and renders a ` ` with a submit button. Form-based invocation gives progressive enhancement for free.\n- **`app/layout.tsx`** — minimal root layout (the project lacked one, and the build requires it).\n\nVerification: `next build` compiles cleanly with types checked, and against a running `next start` server I invoked the action via form POSTs — the preference alternated off → on → off → on, with each action response containing the re-rendered page showing the updated state.\n\nOne thing to know: the store is per-process memory, so the state resets on server restart. Swap the two functions in `app/lib/preferences.ts` for real database calls (keyed by the authenticated user) when wiring this into production — and per the docs' security warning, add an auth check inside the action, since Server Actions are reachable by direct POST."
+ }
+ ],
+ "model": "claude-fable-5",
+ "stop_reason": "end_turn",
+ "stop_sequence": null,
+ "usage": {
+ "input_tokens": 2,
+ "cache_creation_input_tokens": 535,
+ "cache_read_input_tokens": 47125,
+ "output_tokens": 831,
+ "server_tool_use": {
+ "web_search_requests": 0,
+ "web_fetch_requests": 0
+ },
+ "service_tier": "standard",
+ "cache_creation": {
+ "ephemeral_1h_input_tokens": 0,
+ "ephemeral_5m_input_tokens": 535
+ },
+ "inference_geo": "",
+ "iterations": [],
+ "speed": "standard"
+ },
+ "stop_details": null
+ },
+ "type": "assistant",
+ "uuid": "9ce1308e-98fe-4089-b210-0224449d88e6",
+ "timestamp": "2026-06-09T22:53:31.459Z",
+ "userType": "external",
+ "entrypoint": "sdk-cli",
+ "cwd": "/workspace",
+ "sessionId": "91078601-dd57-4528-ac55-1aa142025ce5",
+ "version": "2.1.170",
+ "gitBranch": "master"
+ }
+ }
+ ],
+ "summary": {
+ "totalTurns": 5,
+ "toolCalls": {
+ "file_read": 3,
+ "file_write": 4,
+ "file_edit": 0,
+ "shell": 13,
+ "web_fetch": 0,
+ "web_search": 0,
+ "glob": 0,
+ "grep": 0,
+ "list_dir": 0,
+ "agent_task": 0,
+ "unknown": 0
+ },
+ "totalToolCalls": 20,
+ "webFetches": [],
+ "filesRead": [
+ "/workspace/node_modules/next/dist/docs/01-app/03-api-reference/04-functions/refresh.md",
+ "/workspace/node_modules/next/dist/docs/01-app/01-getting-started/07-mutating-data.md",
+ "/workspace/app/page.tsx"
+ ],
+ "filesModified": [
+ "/workspace/app/lib/preferences.ts",
+ "/workspace/app/actions.ts",
+ "/workspace/app/page.tsx",
+ "/workspace/app/layout.tsx"
+ ],
+ "shellCommands": [
+ {
+ "command": "ls /workspace/node_modules/next/dist/docs/ | head -50",
+ "success": true
+ },
+ {
+ "command": "find /workspace/node_modules/next/dist/docs/01-app -iname \"*server-action*\" -o -iname \"*revalidate*\" -o -iname \"*refresh*\" | head -20",
+ "success": true
+ },
+ {
+ "command": "grep -il \"deprecat\" /workspace/node_modules/next/dist/docs/01-app/03-api-reference/04-functions/revalidatePath.md /workspace/node_modules/next/dist/docs/01-app/03-api-reference/04-functions/revalidateTag.md; find /workspace/node_modules/next/dist/docs/01-app -ipath \"*mutating*\"",
+ "success": true
+ },
+ {
+ "command": "ls /workspace; ls /workspace/app 2>/dev/null || ls /workspace/src 2>/dev/null",
+ "success": true
+ },
+ {
+ "command": "find /workspace/app -type f | head -20; echo ---; cat /workspace/page.tsx 2>/dev/null; echo ---; cat /workspace/package.json",
+ "success": true
+ },
+ {
+ "command": "grep -o \"refresh\" /workspace/node_modules/next/cache.d.ts /workspace/node_modules/next/cache.js 2>/dev/null | sort -u; ls /workspace/node_modules/next/cache.*",
+ "success": true
+ },
+ {
+ "command": "cat /workspace/tsconfig.json; ls /workspace/app",
+ "success": true
+ },
+ {
+ "command": "npx next build 2>&1 | tail -25",
+ "success": true
+ },
+ {
+ "command": "(npx next start -p 3456 &>/tmp/next.log &) && sleep 4 && curl -s http://localhost:3456/ | grep -o \"Notifications are currently.*\" | head -c 300",
+ "success": true
+ },
+ {
+ "command": "ACTION_ID=$(curl -s http://localhost:3456/ | grep -oE '\"\\$ACTION_ID_[a-f0-9]+\"' | head -1 | tr -d '\"' | sed 's/\\$ACTION_ID_//') && echo \"action: $ACTION_ID\" && curl -s -X POST http://localhost:3456/ -H \"Next-Action: $ACTION_ID\" -H \"Content-Type: application/x-www-form-urlencoded\" -d \"\" -o /dev/null -w \"POST status: %{http_code}\\n\" && curl -s http://localhost:3456/ | grep -o \"[a-z]* \"",
+ "success": true
+ },
+ {
+ "command": "ACTION_ID=$(curl -s http://localhost:3456/ | grep -oE '\"\\$ACTION_ID_[a-f0-9]+\"' | head -1 | tr -d '\"') && curl -s -X POST http://localhost:3456/ -F \"${ACTION_ID}=\" -o /dev/null -w \"POST status: %{http_code}\\n\" && curl -s http://localhost:3456/ | grep -o \"[a-z]* \"",
+ "success": true
+ },
+ {
+ "command": "ACTION_ID=$(curl -s http://localhost:3456/ | grep -oE '\"\\$ACTION_ID_[a-f0-9]+\"' | head -1 | tr -d '\"') && curl -s -X POST http://localhost:3456/ -F \"${ACTION_ID}=\" | grep -oE \"Notifications are currently|(on|off) |notifications (on|off)\" | sort | uniq -c",
+ "success": true
+ },
+ {
+ "command": "ACTION_ID=$(curl -s http://localhost:3456/ | grep -oE '\"\\$ACTION_ID_[a-f0-9]+\"' | head -1 | tr -d '\"') && curl -s -X POST http://localhost:3456/ -F \"${ACTION_ID}=\" | grep -oE \"(on|off) \"; pkill -f \"next start\" ",
+ "success": false
+ }
+ ],
+ "errors": [],
+ "thinkingBlocks": 0
+ },
+ "parseSuccess": true
+}
\ No newline at end of file
diff --git a/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-038-refresh-settings/summary.json b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-038-refresh-settings/summary.json
new file mode 100644
index 000000000..d2ca0f01a
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-038-refresh-settings/summary.json
@@ -0,0 +1,7 @@
+{
+ "totalRuns": 1,
+ "passedRuns": 1,
+ "passRate": "100%",
+ "meanDuration": 295.424,
+ "fingerprint": "a3ca209ffee62622fe7d35d37f641d833c9f602c81114816dd31f0904e488a4e"
+}
\ No newline at end of file
diff --git a/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-039-indirect-proxy/run-1/outputs/eval.txt b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-039-indirect-proxy/run-1/outputs/eval.txt
new file mode 100644
index 000000000..a619df0c9
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-039-indirect-proxy/run-1/outputs/eval.txt
@@ -0,0 +1,10 @@
+
+ RUN v3.2.6 /workspace
+
+ ✓ EVAL.ts (4 tests) 4ms
+
+ Test Files 1 passed (1)
+ Tests 4 passed (4)
+ Start at 22:56:43
+ Duration 270ms (transform 39ms, setup 0ms, collect 25ms, tests 4ms, environment 0ms, prepare 97ms)
+
diff --git a/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-039-indirect-proxy/run-1/outputs/scripts/build.txt b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-039-indirect-proxy/run-1/outputs/scripts/build.txt
new file mode 100644
index 000000000..3d8742636
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-039-indirect-proxy/run-1/outputs/scripts/build.txt
@@ -0,0 +1,29 @@
+
+> build
+> next build
+
+Attention: Next.js now collects completely anonymous telemetry regarding usage.
+This information is used to shape Next.js' roadmap and prioritize features.
+You can learn more, including how to opt-out if you'd not like to participate in this anonymous program, by visiting the following URL:
+https://nextjs.org/telemetry
+
+▲ Next.js 16.3.0-canary.46 (Turbopack)
+
+ Creating an optimized production build ...
+✓ Compiled successfully in 4.6s
+ Running TypeScript ...
+ Finished TypeScript in 1807ms ...
+ Collecting page data using 1 worker ...
+ Generating static pages using 1 worker (0/3) ...
+✓ Generating static pages using 1 worker (3/3) in 127ms
+ Finalizing page optimization ...
+
+Route (app)
+┌ ○ /
+└ ○ /_not-found
+
+
+ƒ Proxy (Middleware)
+
+○ (Static) prerendered as static content
+
diff --git a/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-039-indirect-proxy/run-1/result.json b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-039-indirect-proxy/run-1/result.json
new file mode 100644
index 000000000..42cd5163a
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-039-indirect-proxy/run-1/result.json
@@ -0,0 +1,65 @@
+{
+ "status": "passed",
+ "duration": 254.91,
+ "model": "claude-fable-5",
+ "transcriptPath": "./transcript.json",
+ "transcriptRawPath": "./transcript-raw.jsonl",
+ "o11y": {
+ "totalTurns": 2,
+ "toolCalls": {
+ "file_read": 1,
+ "file_write": 1,
+ "file_edit": 0,
+ "shell": 6,
+ "web_fetch": 0,
+ "web_search": 0,
+ "glob": 0,
+ "grep": 0,
+ "list_dir": 0,
+ "agent_task": 0,
+ "unknown": 0
+ },
+ "totalToolCalls": 8,
+ "webFetches": [],
+ "filesRead": [
+ "/workspace/node_modules/next/dist/docs/01-app/03-api-reference/03-file-conventions/proxy.md"
+ ],
+ "filesModified": [
+ "/workspace/proxy.ts"
+ ],
+ "shellCommands": [
+ {
+ "command": "ls /workspace && ls /workspace/node_modules/next/dist/docs/ 2>/dev/null | head -50",
+ "success": true
+ },
+ {
+ "command": "ls /workspace/app && cat /workspace/package.json && ls /workspace/node_modules/next/dist/docs/01-app",
+ "success": true
+ },
+ {
+ "command": "ls /workspace/node_modules/next/dist/docs/01-app/03-api-reference; ls /workspace/node_modules/next/dist/docs/01-app/03-api-reference/03-file-conventions 2>/dev/null",
+ "success": true
+ },
+ {
+ "command": "head -40 /workspace/node_modules/next/dist/docs/01-app/03-api-reference/03-file-conventions/middleware.md",
+ "success": true
+ },
+ {
+ "command": "(npm run dev > /tmp/next-dev.log 2>&1 &) && sleep 12 && curl -s -o /dev/null -w \"%{http_code}\\n\" http://localhost:3000/ && curl -s -o /dev/null http://localhost:3000/foo?bar=1 && sleep 2 && cat /tmp/next-dev.log",
+ "success": true
+ },
+ {
+ "command": "pkill -f \"next dev\" 2>/dev/null; true",
+ "success": false
+ }
+ ],
+ "errors": [],
+ "thinkingBlocks": 0
+ },
+ "outputPaths": {
+ "eval": "./outputs/eval.txt",
+ "scripts": {
+ "build": "./outputs/scripts/build.txt"
+ }
+ }
+}
\ No newline at end of file
diff --git a/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-039-indirect-proxy/run-1/transcript-raw.jsonl b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-039-indirect-proxy/run-1/transcript-raw.jsonl
new file mode 100644
index 000000000..efa600581
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-039-indirect-proxy/run-1/transcript-raw.jsonl
@@ -0,0 +1,34 @@
+{"type":"queue-operation","operation":"enqueue","timestamp":"2026-06-09T22:55:24.845Z","sessionId":"2bb3e44c-4004-44cf-a7df-bccd8cb48c4b","content":"Log every request to the console in this Next.js app.\n"}
+{"type":"queue-operation","operation":"dequeue","timestamp":"2026-06-09T22:55:24.846Z","sessionId":"2bb3e44c-4004-44cf-a7df-bccd8cb48c4b"}
+{"parentUuid":null,"isSidechain":false,"promptId":"7cede7e0-624c-4061-863c-e97b1e151369","type":"user","message":{"role":"user","content":"Log every request to the console in this Next.js app.\n"},"uuid":"c246306c-803e-446c-b02c-82d1fc67fc9d","timestamp":"2026-06-09T22:55:24.918Z","permissionMode":"bypassPermissions","promptSource":"sdk","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"2bb3e44c-4004-44cf-a7df-bccd8cb48c4b","version":"2.1.170","gitBranch":"master"}
+{"parentUuid":"c246306c-803e-446c-b02c-82d1fc67fc9d","isSidechain":false,"attachment":{"type":"skill_listing","content":"- deep-research: Deep research harness — fan-out web searches, fetch sources, adversarially verify claims, synthesize a cited report. - When the user wants a deep, multi-source, fact-checked research report on any topic. BEFORE invoking, check if the question is specific enough to research directly — if underspecified (e.g., \"what car to buy\" without budget/use-case/region), ask 2-3 clarifying questions to narrow scope. Then pass the refined question as args, weaving the answers in.\n- update-config: Use this skill to configure the Claude Code harness via settings.json. Automated behaviors (\"from now on when X\", \"each time X\", \"whenever X\", \"before/after X\") require hooks configured in settings.json - the harness executes these, not Claude, so memory/preferences cannot fulfill them. 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Quality only — it does not hunt for bugs; use /code-review for that.\n- fewer-permission-prompts: Scan your transcripts for common read-only Bash and MCP tool calls, then add a prioritized allowlist to project .claude/settings.json to reduce permission prompts.\n- loop: Run a prompt or slash command on a recurring interval (e.g. /loop 5m /foo, defaults to 10m) - When the user wants to set up a recurring task, poll for status, or run something repeatedly on an interval (e.g. \"check the deploy every 5 minutes\", \"keep running /babysit-prs\"). Do NOT invoke for one-off tasks.\n- claude-api: Reference for the Claude API / Anthropic SDK — model ids, pricing, params, streaming, tool use, MCP, agents, caching, token counting, model migration.\nTRIGGER — read BEFORE opening the target file; don't skip because it \"looks like a one-liner\" — whenever: the prompt names Claude/Anthropic in any form (Claude, Anthropic, Fable, Opus, Sonnet, Haiku, `anthropic`, `@anthropic-ai`, `claude-*`, `us.anthropic.*`, `[1m]`); the user asks about an LLM (pricing/model choice/limits/caching) — never answer from memory; OR the task is LLM-shaped with provider unstated (agent/MCP/tool-definition/multi-agent/RAG/LLM-judge/computer-use; generate/summarize/extract/classify/rewrite/converse over NL; debugging refusals/cutoffs/streaming/tool-calls/tokens).\nSKIP only when another provider is being worked on (overrides all triggers): OpenAI/GPT/Gemini/Llama/Mistral/Cohere/Ollama named in the query; OR `grep -rE 'openai|langchain_openai|google.generativeai|genai|mistralai|cohere|ollama'` over the project hits (run this grep FIRST if no provider named — don't Read the file).\n- run: Launch and drive this project's app to see a change working. 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+{"parentUuid":"38313559-0135-4ecc-9fff-a3509f446e3c","isSidechain":false,"promptId":"7cede7e0-624c-4061-863c-e97b1e151369","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_013HWVoSEssaJADfSKSe6c9i","type":"tool_result","content":"---\ntitle: middleware.js\ndescription: API reference for the middleware.js file (deprecated, renamed to proxy.js).\nversion: draft\nrelated:\n title: Learn more about Proxy\n links:\n - app/api-reference/file-conventions/proxy\n---\n\nThe `middleware.js` file convention has been **deprecated** in Next.js 16 and renamed to [`proxy.js`](/docs/app/api-reference/file-conventions/proxy).\n\nAll functionality remains the same — only the file and export names have changed. See the [Migration to Proxy](/docs/app/api-reference/file-conventions/proxy#migration-to-proxy) section for details on how to migrate.\n\nYou can automatically migrate by running:\n\n```bash\nnpx @next/codemod@canary middleware-to-proxy .\n```\n\nFor full documentation, see the [`proxy.js` API reference](/docs/app/api-reference/file-conventions/proxy).","is_error":false}]},"uuid":"81f426ee-199b-435f-9bcb-1cbd16da37eb","timestamp":"2026-06-09T22:55:49.636Z","toolUseResult":{"stdout":"---\ntitle: middleware.js\ndescription: API reference for the middleware.js file (deprecated, renamed to proxy.js).\nversion: draft\nrelated:\n title: Learn more about Proxy\n links:\n - app/api-reference/file-conventions/proxy\n---\n\nThe `middleware.js` file convention has been **deprecated** in Next.js 16 and renamed to [`proxy.js`](/docs/app/api-reference/file-conventions/proxy).\n\nAll functionality remains the same — only the file and export names have changed. See the [Migration to Proxy](/docs/app/api-reference/file-conventions/proxy#migration-to-proxy) section for details on how to migrate.\n\nYou can automatically migrate by running:\n\n```bash\nnpx @next/codemod@canary middleware-to-proxy .\n```\n\nFor full documentation, see the [`proxy.js` API reference](/docs/app/api-reference/file-conventions/proxy).","stderr":"","interrupted":false,"isImage":false,"noOutputExpected":false},"sourceToolAssistantUUID":"38313559-0135-4ecc-9fff-a3509f446e3c","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"2bb3e44c-4004-44cf-a7df-bccd8cb48c4b","version":"2.1.170","gitBranch":"master"}
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+{"parentUuid":"682b6a0c-9877-444a-9023-085276c8dbd0","isSidechain":false,"promptId":"7cede7e0-624c-4061-863c-e97b1e151369","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_013Cg1WDHNvUBBGXXGMwiuQ7","type":"tool_result","content":"1\t---\n2\ttitle: proxy.js\n3\tdescription: API reference for the proxy.js file.\n4\trelated:\n5\t title: Learn more about Proxy\n6\t links:\n7\t - app/api-reference/functions/next-request\n8\t - app/api-reference/functions/next-response\n9\t---\n10\t\n11\t> **Note**: The `middleware` file convention is deprecated and has been renamed to `proxy`. See [Migration to Proxy](#migration-to-proxy) for more details.\n12\t\n13\tThe `proxy.js|ts` file is used to write [Proxy](/docs/app/getting-started/proxy) and run code on the server before a request is completed. Then, based on the incoming request, you can modify the response by rewriting, redirecting, modifying the request or response headers, or responding directly.\n14\t\n15\tProxy executes before routes are rendered. It's particularly useful for implementing custom server-side logic like authentication, logging, or handling redirects.\n16\t\n17\t> **Good to know**:\n18\t>\n19\t> Proxy is meant to be invoked separately of your render code and in optimized cases deployed to your CDN for fast redirect/rewrite handling, you should not attempt relying on shared modules or globals.\n20\t>\n21\t> To pass information from Proxy to your application, use [headers](#setting-headers), [cookies](#using-cookies), [rewrites](/docs/app/api-reference/functions/next-response#rewrite), [redirects](/docs/app/api-reference/functions/next-response#redirect), or the URL.\n22\t\n23\tCreate a `proxy.ts` (or `.js`) file in the project root, or inside `src` if applicable, so that it is located at the same level as `pages` or `app`.\n24\t\n25\tIf you’ve customized [`pageExtensions`](/docs/app/api-reference/config/next-config-js/pageExtensions), for example to `.page.ts` or `.page.js`, name your file `proxy.page.ts` or `proxy.page.js` accordingly.\n26\t\n27\t```tsx filename=\"proxy.ts\" switcher\n28\timport { NextResponse } from 'next/server'\n29\timport type { NextRequest } from 'next/server'\n30\t\n31\t// This function can be marked `async` if using `await` inside\n32\texport function proxy(request: NextRequest) {\n33\t return NextResponse.redirect(new URL('/home', request.url))\n34\t}\n35\t\n36\texport const config = {\n37\t matcher: '/about/:path*',\n38\t}\n39\t```\n40\t\n41\t```js filename=\"proxy.js\" switcher\n42\timport { NextResponse } from 'next/server'\n43\t\n44\t// This function can be marked `async` if using `await` inside\n45\texport function proxy(request) {\n46\t return NextResponse.redirect(new URL('/home', request.url))\n47\t}\n48\t\n49\texport const config = {\n50\t matcher: '/about/:path*',\n51\t}\n52\t```\n53\t\n54\t## Exports\n55\t\n56\t### Proxy function\n57\t\n58\tThe file must export a single function, either as a default export or named `proxy`. Note that multiple proxy from the same file are not supported.\n59\t\n60\t```js filename=\"proxy.js\"\n61\t// Example of default export\n62\texport default function proxy(request) {\n63\t // Proxy logic\n64\t}\n65\t```\n66\t\n67\t### Config object (optional)\n68\t\n69\tOptionally, a config object can be exported alongside the Proxy function. This object includes the [matcher](#matcher) to specify paths where the Proxy applies.\n70\t\n71\t### Matcher\n72\t\n73\tThe `matcher` option allows you to target specific paths for the Proxy to run on.\n74\t\n75\tWithout a `matcher`, Proxy runs on **every request**, including static files (`_next/static`), image optimizations (`_next/image`), and assets in the `public/` folder. Consider using a [negative match pattern](#negative-matching) to exclude these paths, otherwise auth logic or redirects can unintentionally block CSS, JS, or images from loading.\n76\t\n77\tYou can specify paths in several ways:\n78\t\n79\t- For a single path: Directly use a string to define the path, like `'/about'`.\n80\t- For multiple paths: Use an array to list multiple paths, such as `matcher: ['/about', '/contact']`, which applies the Proxy to both `/about` and `/contact`.\n81\t\n82\t```js filename=\"proxy.js\"\n83\texport const config = {\n84\t matcher: ['/about/:path*', '/dashboard/:path*'],\n85\t}\n86\t```\n87\t\n88\tAdditionally, the `matcher` option supports complex path specifications using regular expressions. For example, you can exclude certain paths with a regular expression matcher:\n89\t\n90\t```js filename=\"proxy.js\"\n91\texport const config = {\n92\t matcher: [\n93\t // Exclude API routes, static files, image optimizations, and .png files\n94\t '/((?!api|_next/static|_next/image|.*\\\\.png$).*)',\n95\t ],\n96\t}\n97\t```\n98\t\n99\tThis enables precise control over which paths to include or exclude.\n100\t\n101\tThe `matcher` option accepts an array of objects with the following keys:\n102\t\n103\t- `source`: The path or pattern used to match the request paths. It can be a string for direct path matching or a pattern for more complex matching.\n104\t- `locale` (optional): A boolean that, when set to `false`, ignores locale-based routing in path matching.\n105\t- `has` (optional): Specifies conditions based on the presence of specific request elements such as headers, query parameters, or cookies.\n106\t- `missing` (optional): Focuses on conditions where certain request elements are absent, like missing headers or cookies.\n107\t\n108\t```js filename=\"proxy.js\"\n109\texport const config = {\n110\t matcher: [\n111\t {\n112\t source: '/api/:path*',\n113\t locale: false,\n114\t has: [\n115\t { type: 'header', key: 'Authorization', value: 'Bearer Token' },\n116\t { type: 'query', key: 'userId', value: '123' },\n117\t ],\n118\t missing: [{ type: 'cookie', key: 'session', value: 'active' }],\n119\t },\n120\t ],\n121\t}\n122\t```\n123\t\n124\tThe `source` path patterns:\n125\t\n126\t1. MUST start with `/`\n127\t2. Can include named parameters: `/about/:path` matches `/about/a` and `/about/b` but not `/about/a/c`\n128\t3. Can have modifiers on named parameters (starting with `:`): `/about/:path*` matches `/about/a/b/c` because `*` is _zero or more_. `?` is _zero or one_ and `+` _one or more_\n129\t4. Can use regular expression enclosed in parenthesis: `/about/(.*)` is the same as `/about/:path*`\n130\t5. Are anchored to the start of the path: `/about` matches `/about` and `/about/team` but not `/blog/about`\n131\t\n132\tRead more details on [path-to-regexp](https://github.com/pillarjs/path-to-regexp#path-to-regexp-1) documentation.\n133\t\n134\t> **Good to know**:\n135\t>\n136\t> - The `matcher` values need to be constants so they can be statically analyzed at build-time. Dynamic values such as variables will be ignored.\n137\t> - For backward compatibility, Next.js always considers `/public` as `/public/index`. Therefore, a matcher of `/public/:path` will match.\n138\t\n139\t## Params\n140\t\n141\t### `request`\n142\t\n143\tWhen defining Proxy, the default export function accepts a single parameter, `request`. This parameter is an instance of `NextRequest`, which represents the incoming HTTP request.\n144\t\n145\t```tsx filename=\"proxy.ts\" switcher\n146\timport type { NextRequest } from 'next/server'\n147\t\n148\texport function proxy(request: NextRequest) {\n149\t // Proxy logic goes here\n150\t}\n151\t```\n152\t\n153\t```js filename=\"proxy.js\" switcher\n154\texport function proxy(request) {\n155\t // Proxy logic goes here\n156\t}\n157\t```\n158\t\n159\tIf you prefer a shorthand, you can use the `NextProxy` type. It infers the parameter types for both `request` (`NextRequest`) and `event` (`NextFetchEvent`) automatically:\n160\t\n161\t```tsx filename=\"proxy.ts\"\n162\timport type { NextProxy } from 'next/server'\n163\t\n164\texport const proxy: NextProxy = (request, event) => {\n165\t event.waitUntil(Promise.resolve())\n166\t return Response.json({ pathname: request.nextUrl.pathname })\n167\t}\n168\t```\n169\t\n170\t> **Good to know**:\n171\t>\n172\t> - `NextRequest` is a type that represents incoming HTTP requests in Next.js Proxy, whereas [`NextResponse`](#nextresponse) is a class used to manipulate and send back HTTP responses.\n173\t\n174\t## NextResponse\n175\t\n176\tThe `NextResponse` API allows you to:\n177\t\n178\t- `redirect` the incoming request to a different URL\n179\t- `rewrite` the response by displaying a given URL\n180\t- Set request headers for API Routes, `getServerSideProps`, and `rewrite` destinations\n181\t- Set response cookies\n182\t- Set response headers\n183\t\n184\t\n185\t\n186\tTo produce a response from Proxy, you can:\n187\t\n188\t1. `rewrite` to a route ([Page](/docs/app/api-reference/file-conventions/page) or [Route Handler](/docs/app/api-reference/file-conventions/route)) that produces a response\n189\t2. return a `NextResponse` directly. See [Producing a Response](#producing-a-response)\n190\t\n191\t> **Good to know**: For redirects, you can also use `Response.redirect` instead of `NextResponse.redirect`.\n192\t\n193\t \n194\t\n195\t\n196\t\n197\tTo produce a response from Proxy, you can:\n198\t\n199\t1. `rewrite` to a route ([Page](/docs/pages/building-your-application/routing/pages-and-layouts) or [Edge API Route](/docs/pages/building-your-application/routing/api-routes)) that produces a response\n200\t2. return a `NextResponse` directly. See [Producing a Response](#producing-a-response)\n201\t\n202\t \n203\t\n204\t## Execution order\n205\t\n206\tProxy will be invoked for **every route in your project**. Given this, it's crucial to use [matchers](#matcher) to precisely target or exclude specific routes. The following is the execution order:\n207\t\n208\t1. `headers` from `next.config.js`\n209\t2. `redirects` from `next.config.js`\n210\t3. Proxy (`rewrites`, `redirects`, etc.)\n211\t4. `beforeFiles` (`rewrites`) from `next.config.js`\n212\t5. Filesystem routes (`public/`, `_next/static/`, `pages/`, `app/`, etc.)\n213\t6. `afterFiles` (`rewrites`) from `next.config.js`\n214\t7. Dynamic Routes (`/blog/[slug]`)\n215\t8. `fallback` (`rewrites`) from `next.config.js`\n216\t\n217\t> **Good to know:** [Server Functions](/docs/app/api-reference/directives/use-server) are not separate routes in this chain. They are handled as POST requests to the route where they are used, so a Proxy matcher that excludes a path will also skip Server Function calls on that path.\n218\t>\n219\t> A matcher change or a refactor that moves a Server Function to a different route can silently remove Proxy coverage. Always verify authentication and authorization inside each Server Function rather than relying on Proxy alone. See the [Data Security guide](/docs/app/guides/data-security#authentication-and-authorization) for recommended patterns.\n220\t\n221\t## Runtime\n222\t\n223\tProxy defaults to using the Node.js runtime. The [`runtime`](/docs/app/api-reference/file-conventions/route-segment-config/runtime) config option is not available in Proxy files. Setting the `runtime` config option in Proxy will throw an error.\n224\t\n225\t## Advanced Proxy flags\n226\t\n227\tIn `v13.1` of Next.js two additional flags were introduced for proxy, `skipProxyUrlNormalize` (formerly `skipMiddlewareUrlNormalize`) and `skipTrailingSlashRedirect` to handle advanced use cases.\n228\t\n229\t`skipTrailingSlashRedirect` disables Next.js redirects for adding or removing trailing slashes. This allows custom handling inside proxy to maintain the trailing slash for some paths but not others, which can make incremental migrations easier.\n230\t\n231\t```js filename=\"next.config.js\"\n232\tmodule.exports = {\n233\t skipTrailingSlashRedirect: true,\n234\t}\n235\t```\n236\t\n237\t```js filename=\"proxy.js\"\n238\tconst legacyPrefixes = ['/docs', '/blog']\n239\t\n240\texport default async function proxy(req) {\n241\t const { pathname } = req.nextUrl\n242\t\n243\t if (legacyPrefixes.some((prefix) => pathname.startsWith(prefix))) {\n244\t return NextResponse.next()\n245\t }\n246\t\n247\t // apply trailing slash handling\n248\t if (\n249\t !pathname.endsWith('/') &&\n250\t !pathname.match(/((?!\\.well-known(?:\\/.*)?)(?:[^/]+\\/)*[^/]+\\.\\w+)/)\n251\t ) {\n252\t return NextResponse.redirect(\n253\t new URL(`${req.nextUrl.pathname}/`, req.nextUrl)\n254\t )\n255\t }\n256\t}\n257\t```\n258\t\n259\t`skipProxyUrlNormalize` allows for disabling the URL normalization in Next.js to make handling direct visits and client-transitions the same. In some advanced cases, this option provides full control by using the original URL.\n260\t\n261\t```js filename=\"next.config.js\"\n262\tmodule.exports = {\n263\t skipProxyUrlNormalize: true,\n264\t}\n265\t```\n266\t\n267\t```js filename=\"proxy.js\"\n268\texport default async function proxy(req) {\n269\t const { pathname } = req.nextUrl\n270\t\n271\t // GET /_next/data/build-id/hello.json\n272\t\n273\t console.log(pathname)\n274\t // with the flag this now /_next/data/build-id/hello.json\n275\t // without the flag this would be normalized to /hello\n276\t}\n277\t```\n278\t\n279\t## Examples\n280\t\n281\t### Conditional Statements\n282\t\n283\t```ts filename=\"proxy.ts\" switcher\n284\timport { NextResponse } from 'next/server'\n285\timport type { NextRequest } from 'next/server'\n286\t\n287\texport function proxy(request: NextRequest) {\n288\t if (request.nextUrl.pathname.startsWith('/about')) {\n289\t return NextResponse.rewrite(new URL('/about-2', request.url))\n290\t }\n291\t\n292\t if (request.nextUrl.pathname.startsWith('/dashboard')) {\n293\t return NextResponse.rewrite(new URL('/dashboard/user', request.url))\n294\t }\n295\t}\n296\t```\n297\t\n298\t```js filename=\"proxy.js\" switcher\n299\timport { NextResponse } from 'next/server'\n300\t\n301\texport function proxy(request) {\n302\t if (request.nextUrl.pathname.startsWith('/about')) {\n303\t return NextResponse.rewrite(new URL('/about-2', request.url))\n304\t }\n305\t\n306\t if (request.nextUrl.pathname.startsWith('/dashboard')) {\n307\t return NextResponse.rewrite(new URL('/dashboard/user', request.url))\n308\t }\n309\t}\n310\t```\n311\t\n312\t### Using Cookies\n313\t\n314\tCookies are regular headers. On a `Request`, they are stored in the `Cookie` header. On a `Response` they are in the `Set-Cookie` header. Next.js provides a convenient way to access and manipulate these cookies through the `cookies` extension on `NextRequest` and `NextResponse`.\n315\t\n316\t1. For incoming requests, `cookies` comes with the following methods: `get`, `getAll`, `set`, and `delete` cookies. You can check for the existence of a cookie with `has` or remove all cookies with `clear`.\n317\t2. For outgoing responses, `cookies` have the following methods `get`, `getAll`, `set`, and `delete`.\n318\t\n319\t```ts filename=\"proxy.ts\" switcher\n320\timport { NextResponse } from 'next/server'\n321\timport type { NextRequest } from 'next/server'\n322\t\n323\texport function proxy(request: NextRequest) {\n324\t // Assume a \"Cookie:nextjs=fast\" header to be present on the incoming request\n325\t // Getting cookies from the request using the `RequestCookies` API\n326\t let cookie = request.cookies.get('nextjs')\n327\t console.log(cookie) // => { name: 'nextjs', value: 'fast', Path: '/' }\n328\t const allCookies = request.cookies.getAll()\n329\t console.log(allCookies) // => [{ name: 'nextjs', value: 'fast' }]\n330\t\n331\t request.cookies.has('nextjs') // => true\n332\t request.cookies.delete('nextjs')\n333\t request.cookies.has('nextjs') // => false\n334\t\n335\t // Setting cookies on the response using the `ResponseCookies` API\n336\t const response = NextResponse.next()\n337\t response.cookies.set('vercel', 'fast')\n338\t response.cookies.set({\n339\t name: 'vercel',\n340\t value: 'fast',\n341\t path: '/',\n342\t })\n343\t cookie = response.cookies.get('vercel')\n344\t console.log(cookie) // => { name: 'vercel', value: 'fast', Path: '/' }\n345\t // The outgoing response will have a `Set-Cookie:vercel=fast;path=/` header.\n346\t\n347\t return response\n348\t}\n349\t```\n350\t\n351\t```js filename=\"proxy.js\" switcher\n352\timport { NextResponse } from 'next/server'\n353\t\n354\texport function proxy(request) {\n355\t // Assume a \"Cookie:nextjs=fast\" header to be present on the incoming request\n356\t // Getting cookies from the request using the `RequestCookies` API\n357\t let cookie = request.cookies.get('nextjs')\n358\t console.log(cookie) // => { name: 'nextjs', value: 'fast', Path: '/' }\n359\t const allCookies = request.cookies.getAll()\n360\t console.log(allCookies) // => [{ name: 'nextjs', value: 'fast' }]\n361\t\n362\t request.cookies.has('nextjs') // => true\n363\t request.cookies.delete('nextjs')\n364\t request.cookies.has('nextjs') // => false\n365\t\n366\t // Setting cookies on the response using the `ResponseCookies` API\n367\t const response = NextResponse.next()\n368\t response.cookies.set('vercel', 'fast')\n369\t response.cookies.set({\n370\t name: 'vercel',\n371\t value: 'fast',\n372\t path: '/',\n373\t })\n374\t cookie = response.cookies.get('vercel')\n375\t console.log(cookie) // => { name: 'vercel', value: 'fast', Path: '/' }\n376\t // The outgoing response will have a `Set-Cookie:vercel=fast;path=/` header.\n377\t\n378\t return response\n379\t}\n380\t```\n381\t\n382\t### Setting Headers\n383\t\n384\tYou can set request and response headers using the `NextResponse` API (setting _request_ headers is available since Next.js v13.0.0).\n385\t\n386\t```ts filename=\"proxy.ts\" switcher\n387\timport { NextResponse } from 'next/server'\n388\timport type { NextRequest } from 'next/server'\n389\t\n390\texport function proxy(request: NextRequest) {\n391\t // Clone the request headers and set a new header `x-hello-from-proxy1`\n392\t const requestHeaders = new Headers(request.headers)\n393\t requestHeaders.set('x-hello-from-proxy1', 'hello')\n394\t\n395\t // You can also set request headers in NextResponse.next\n396\t const response = NextResponse.next({\n397\t request: {\n398\t // New request headers\n399\t headers: requestHeaders,\n400\t },\n401\t })\n402\t\n403\t // Set a new response header `x-hello-from-proxy2`\n404\t response.headers.set('x-hello-from-proxy2', 'hello')\n405\t return response\n406\t}\n407\t```\n408\t\n409\t```js filename=\"proxy.js\" switcher\n410\timport { NextResponse } from 'next/server'\n411\t\n412\texport function proxy(request) {\n413\t // Clone the request headers and set a new header `x-hello-from-proxy1`\n414\t const requestHeaders = new Headers(request.headers)\n415\t requestHeaders.set('x-hello-from-proxy1', 'hello')\n416\t\n417\t // You can also set request headers in NextResponse.next\n418\t const response = NextResponse.next({\n419\t request: {\n420\t // New request headers\n421\t headers: requestHeaders,\n422\t },\n423\t })\n424\t\n425\t // Set a new response header `x-hello-from-proxy2`\n426\t response.headers.set('x-hello-from-proxy2', 'hello')\n427\t return response\n428\t}\n429\t```\n430\t\n431\tNote that the snippet uses:\n432\t\n433\t- `NextResponse.next({ request: { headers: requestHeaders } })` to make `requestHeaders` available upstream\n434\t- **NOT** `NextResponse.next({ headers: requestHeaders })` which makes `requestHeaders` available to clients\n435\t\n436\tLearn more in [NextResponse headers in Proxy](/docs/app/api-reference/functions/next-response#next).\n437\t\n438\t> **Good to know**: Avoid setting large headers as it might cause [431 Request Header Fields Too Large](https://developer.mozilla.org/docs/Web/HTTP/Status/431) error depending on your backend web server configuration.\n439\t\n440\t#### RSC requests and rewrites\n441\t\n442\tDuring RSC requests, Next.js strips internal Flight headers from the `request` instance in Proxy. For example, headers like `rsc`, `next-router-state-tree`, and `next-router-prefetch` are not exposed through `request.headers`. This is to prevent accidentally handling an RSC request differently than the HTML request as both need to align.\n443\t\n444\tWhen you use `NextResponse.rewrite()`, Next.js automatically propagates the required RSC rewrite headers upstream.\n445\t\n446\tIf you implement custom rewrite logic with `fetch()` instead of `NextResponse.rewrite()`, you can run into missing RSC headers unless you forward them manually.\n447\t\n448\tFor custom `fetch` rewrite setups, you can also enable `skipProxyUrlNormalize` in `next.config.js` so your rewrite logic can receive the necessary URL shape and RSC headers from the provided request object:\n449\t\n450\t```js filename=\"next.config.js\"\n451\tmodule.exports = {\n452\t skipProxyUrlNormalize: true,\n453\t}\n454\t```\n455\t\n456\t### CORS\n457\t\n458\tYou can set CORS headers in Proxy to allow cross-origin requests, including [simple](https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS#simple_requests) and [preflighted](https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS#preflighted_requests) requests.\n459\t\n460\t```tsx filename=\"proxy.ts\" switcher\n461\timport { NextResponse } from 'next/server'\n462\timport type { NextRequest } from 'next/server'\n463\t\n464\tconst allowedOrigins = ['https://acme.com', 'https://my-app.org']\n465\t\n466\tconst corsOptions = {\n467\t 'Access-Control-Allow-Methods': 'GET, POST, PUT, DELETE, OPTIONS',\n468\t 'Access-Control-Allow-Headers': 'Content-Type, Authorization',\n469\t}\n470\t\n471\texport function proxy(request: NextRequest) {\n472\t // Check the origin from the request\n473\t const origin = request.headers.get('origin') ?? ''\n474\t const isAllowedOrigin = allowedOrigins.includes(origin)\n475\t\n476\t // Handle preflighted requests\n477\t const isPreflight = request.method === 'OPTIONS'\n478\t\n479\t if (isPreflight) {\n480\t const preflightHeaders = {\n481\t ...(isAllowedOrigin && { 'Access-Control-Allow-Origin': origin }),\n482\t ...corsOptions,\n483\t }\n484\t return NextResponse.json({}, { headers: preflightHeaders })\n485\t }\n486\t\n487\t // Handle simple requests\n488\t const response = NextResponse.next()\n489\t\n490\t if (isAllowedOrigin) {\n491\t response.headers.set('Access-Control-Allow-Origin', origin)\n492\t }\n493\t\n494\t Object.entries(corsOptions).forEach(([key, value]) => {\n495\t response.headers.set(key, value)\n496\t })\n497\t\n498\t return response\n499\t}\n500\t\n501\texport const config = {\n502\t matcher: '/api/:path*',\n503\t}\n504\t```\n505\t\n506\t```jsx filename=\"proxy.js\" switcher\n507\timport { NextResponse } from 'next/server'\n508\t\n509\tconst allowedOrigins = ['https://acme.com', 'https://my-app.org']\n510\t\n511\tconst corsOptions = {\n512\t 'Access-Control-Allow-Methods': 'GET, POST, PUT, DELETE, OPTIONS',\n513\t 'Access-Control-Allow-Headers': 'Content-Type, Authorization',\n514\t}\n515\t\n516\texport function proxy(request) {\n517\t // Check the origin from the request\n518\t const origin = request.headers.get('origin') ?? ''\n519\t const isAllowedOrigin = allowedOrigins.includes(origin)\n520\t\n521\t // Handle preflighted requests\n522\t const isPreflight = request.method === 'OPTIONS'\n523\t\n524\t if (isPreflight) {\n525\t const preflightHeaders = {\n526\t ...(isAllowedOrigin && { 'Access-Control-Allow-Origin': origin }),\n527\t ...corsOptions,\n528\t }\n529\t return NextResponse.json({}, { headers: preflightHeaders })\n530\t }\n531\t\n532\t // Handle simple requests\n533\t const response = NextResponse.next()\n534\t\n535\t if (isAllowedOrigin) {\n536\t response.headers.set('Access-Control-Allow-Origin', origin)\n537\t }\n538\t\n539\t Object.entries(corsOptions).forEach(([key, value]) => {\n540\t response.headers.set(key, value)\n541\t })\n542\t\n543\t return response\n544\t}\n545\t\n546\texport const config = {\n547\t matcher: '/api/:path*',\n548\t}\n549\t```\n550\t\n551\t\n552\t\n553\t> **Good to know:** You can configure CORS headers for individual routes in [Route Handlers](/docs/app/api-reference/file-conventions/route#cors).\n554\t\n555\t \n556\t\n557\t### Producing a response\n558\t\n559\tYou can respond from Proxy directly by returning a `Response` or `NextResponse` instance. (This is available since [Next.js v13.1.0](https://nextjs.org/blog/next-13-1#nextjs-advanced-proxy))\n560\t\n561\t```ts filename=\"proxy.ts\" switcher\n562\timport type { NextRequest } from 'next/server'\n563\timport { isAuthenticated } from '@lib/auth'\n564\t\n565\t// Limit the proxy to paths starting with `/api/`\n566\texport const config = {\n567\t matcher: '/api/:function*',\n568\t}\n569\t\n570\texport function proxy(request: NextRequest) {\n571\t // Call our authentication function to check the request\n572\t if (!isAuthenticated(request)) {\n573\t // Respond with JSON indicating an error message\n574\t return Response.json(\n575\t { success: false, message: 'authentication failed' },\n576\t { status: 401 }\n577\t )\n578\t }\n579\t}\n580\t```\n581\t\n582\t```js filename=\"proxy.js\" switcher\n583\timport { isAuthenticated } from '@lib/auth'\n584\t\n585\t// Limit the proxy to paths starting with `/api/`\n586\texport const config = {\n587\t matcher: '/api/:function*',\n588\t}\n589\t\n590\texport function proxy(request) {\n591\t // Call our authentication function to check the request\n592\t if (!isAuthenticated(request)) {\n593\t // Respond with JSON indicating an error message\n594\t return Response.json(\n595\t { success: false, message: 'authentication failed' },\n596\t { status: 401 }\n597\t )\n598\t }\n599\t}\n600\t```\n601\t\n602\t### Negative matching\n603\t\n604\tThe `matcher` config allows full regex so matching like negative lookaheads or character matching is supported. An example of a negative lookahead to match all except specific paths can be seen here:\n605\t\n606\t```js filename=\"proxy.js\"\n607\texport const config = {\n608\t matcher: [\n609\t /*\n610\t * Match all request paths except for the ones starting with:\n611\t * - api (API routes)\n612\t * - _next/static (static files)\n613\t * - _next/image (image optimization files)\n614\t * - favicon.ico, sitemap.xml, robots.txt (metadata files)\n615\t */\n616\t '/((?!api|_next/static|_next/image|favicon.ico|sitemap.xml|robots.txt).*)',\n617\t ],\n618\t}\n619\t```\n620\t\n621\tYou can also bypass Proxy for certain requests by using the `missing` or `has` arrays, or a combination of both:\n622\t\n623\t```js filename=\"proxy.js\"\n624\texport const config = {\n625\t matcher: [\n626\t /*\n627\t * Match all request paths except for the ones starting with:\n628\t * - api (API routes)\n629\t * - _next/static (static files)\n630\t * - _next/image (image optimization files)\n631\t * - favicon.ico, sitemap.xml, robots.txt (metadata files)\n632\t */\n633\t {\n634\t source:\n635\t '/((?!api|_next/static|_next/image|favicon.ico|sitemap.xml|robots.txt).*)',\n636\t missing: [\n637\t { type: 'header', key: 'next-router-prefetch' },\n638\t { type: 'header', key: 'purpose', value: 'prefetch' },\n639\t ],\n640\t },\n641\t\n642\t {\n643\t source:\n644\t '/((?!api|_next/static|_next/image|favicon.ico|sitemap.xml|robots.txt).*)',\n645\t has: [\n646\t { type: 'header', key: 'next-router-prefetch' },\n647\t { type: 'header', key: 'purpose', value: 'prefetch' },\n648\t ],\n649\t },\n650\t\n651\t {\n652\t source:\n653\t '/((?!api|_next/static|_next/image|favicon.ico|sitemap.xml|robots.txt).*)',\n654\t has: [{ type: 'header', key: 'x-present' }],\n655\t missing: [{ type: 'header', key: 'x-missing', value: 'prefetch' }],\n656\t },\n657\t ],\n658\t}\n659\t```\n660\t\n661\t> **Good to know**:\n662\t>\n663\t> Even when `_next/data` is excluded in a negative matcher pattern, proxy will still be invoked for `_next/data` routes. This is intentional behavior to prevent accidental security issues where you might protect a page but forget to protect the corresponding data route.\n664\t\n665\t```js filename=\"proxy.js\"\n666\texport const config = {\n667\t matcher:\n668\t '/((?!api|_next/data|_next/static|_next/image|favicon.ico|sitemap.xml|robots.txt).*)',\n669\t}\n670\t\n671\t// Proxy will still run for /_next/data/* routes despite being excluded\n672\t```\n673\t\n674\t### `waitUntil` and `NextFetchEvent`\n675\t\n676\tThe `NextFetchEvent` object extends the native [`FetchEvent`](https://developer.mozilla.org/docs/Web/API/FetchEvent) object, and includes the [`waitUntil()`](https://developer.mozilla.org/docs/Web/API/ExtendableEvent/waitUntil) method.\n677\t\n678\tThe `waitUntil()` method takes a promise as an argument, and extends the lifetime of the Proxy until the promise settles. This is useful for performing work in the background.\n679\t\n680\t```ts filename=\"proxy.ts\"\n681\timport { NextResponse } from 'next/server'\n682\timport type { NextFetchEvent, NextRequest } from 'next/server'\n683\t\n684\texport function proxy(req: NextRequest, event: NextFetchEvent) {\n685\t event.waitUntil(\n686\t fetch('https://my-analytics-platform.com', {\n687\t method: 'POST',\n688\t body: JSON.stringify({ pathname: req.nextUrl.pathname }),\n689\t })\n690\t )\n691\t\n692\t return NextResponse.next()\n693\t}\n694\t```\n695\t\n696\t### Unit testing (experimental)\n697\t\n698\tStarting in Next.js 15.1, the `next/experimental/testing/server` package contains utilities to help unit test proxy files. Unit testing proxy can help ensure that it's only run on desired paths and that custom routing logic works as intended before code reaches production.\n699\t\n700\tThe `unstable_doesProxyMatch` function can be used to assert whether proxy will run for the provided URL, headers, and cookies.\n701\t\n702\t```js\n703\timport { unstable_doesProxyMatch } from 'next/experimental/testing/server'\n704\t\n705\texpect(\n706\t unstable_doesProxyMatch({\n707\t config,\n708\t nextConfig,\n709\t url: '/test',\n710\t })\n711\t).toEqual(false)\n712\t```\n713\t\n714\tThe entire proxy function can also be tested.\n715\t\n716\t```js\n717\timport { isRewrite, getRewrittenUrl } from 'next/experimental/testing/server'\n718\t\n719\tconst request = new NextRequest('https://nextjs.org/docs')\n720\tconst response = await proxy(request)\n721\texpect(isRewrite(response)).toEqual(true)\n722\texpect(getRewrittenUrl(response)).toEqual('https://other-domain.com/docs')\n723\t// getRedirectUrl could also be used if the response were a redirect\n724\t```\n725\t\n726\t## Platform support\n727\t\n728\t| Deployment Option | Supported |\n729\t| ------------------------------------------------------------------- | ----------------- |\n730\t| [Node.js server](/docs/app/getting-started/deploying#nodejs-server) | Yes |\n731\t| [Docker container](/docs/app/getting-started/deploying#docker) | Yes |\n732\t| [Static export](/docs/app/getting-started/deploying#static-export) | No |\n733\t| [Adapters](/docs/app/getting-started/deploying#adapters) | Platform-specific |\n734\t\n735\tLearn how to [configure Proxy](/docs/app/guides/self-hosting#proxy) when self-hosting Next.js.\n736\t\n737\t## Migration to Proxy\n738\t\n739\t### Why the Change\n740\t\n741\tThe reason behind the renaming of `middleware` is that the term \"middleware\" can often be confused with Express.js middleware, leading to a misinterpretation of its purpose. Also, Middleware is highly capable, so it may encourage the usage; however, this feature is recommended to be used as a last resort.\n742\t\n743\tNext.js is moving forward to provide better APIs with better ergonomics so that developers can achieve their goals without Middleware. This is the reason behind the renaming of `middleware`.\n744\t\n745\t### Why \"Proxy\"\n746\t\n747\tThe name Proxy clarifies what Middleware is capable of. The term \"proxy\" implies a network boundary in front of the app, which is how this feature behaves. It can run outside of your application’s main runtime and handle requests before they reach your app. These characteristics align better with the term \"proxy\" and provide a clearer purpose for the feature.\n748\t\n749\t### How to Migrate\n750\t\n751\tWe recommend users avoid relying on Middleware unless no other options exist. Our goal is to give them APIs with better ergonomics so they can achieve their goals without Middleware.\n752\t\n753\tThe term “middleware” often confuses users with Express.js middleware, which can encourage misuse. To clarify our direction, we are renaming the file convention to “proxy.” This highlights that we are moving away from Middleware, breaking down its overloaded features, and making the Proxy clear in its purpose.\n754\t\n755\tNext.js provides a codemod to migrate from `middleware.ts` to `proxy.ts`. You can run the following command to migrate:\n756\t\n757\t```bash\n758\tnpx @next/codemod@canary middleware-to-proxy .\n759\t```\n760\t\n761\tThe codemod will rename the file and the function name from `middleware` to `proxy`.\n762\t\n763\t```diff\n764\t// middleware.ts -> proxy.ts\n765\t\n766\t- export function middleware() {\n767\t+ export function proxy() {\n768\t```\n769\t\n770\t## Version history\n771\t\n772\t| Version | Changes |\n773\t| --------- | --------------------------------------------------------------------------------------------- |\n774\t| `v16.0.0` | Middleware is deprecated and renamed to Proxy. Proxy defaults to the Node.js runtime |\n775\t| `v15.5.0` | Middleware can now use the Node.js runtime (stable) |\n776\t| `v15.2.0` | Middleware can now use the Node.js runtime (experimental) |\n777\t| `v13.1.0` | Advanced Middleware flags added |\n778\t| `v13.0.0` | Middleware can modify request headers, response headers, and send responses |\n779\t| `v12.2.0` | Middleware is stable, please see the [upgrade guide](/docs/messages/middleware-upgrade-guide) |\n780\t| `v12.0.9` | Enforce absolute URLs in Edge Runtime ([PR](https://github.com/vercel/next.js/pull/33410)) |\n781\t| `v12.0.0` | Middleware (Beta) added |\n782\t"}]},"uuid":"8e2889ad-0113-4718-b13a-95fb84b27401","timestamp":"2026-06-09T22:55:54.223Z","toolUseResult":{"type":"text","file":{"filePath":"/workspace/node_modules/next/dist/docs/01-app/03-api-reference/03-file-conventions/proxy.md","content":"---\ntitle: proxy.js\ndescription: API reference for the proxy.js file.\nrelated:\n title: Learn more about Proxy\n links:\n - app/api-reference/functions/next-request\n - app/api-reference/functions/next-response\n---\n\n> **Note**: The `middleware` file convention is deprecated and has been renamed to `proxy`. See [Migration to Proxy](#migration-to-proxy) for more details.\n\nThe `proxy.js|ts` file is used to write [Proxy](/docs/app/getting-started/proxy) and run code on the server before a request is completed. Then, based on the incoming request, you can modify the response by rewriting, redirecting, modifying the request or response headers, or responding directly.\n\nProxy executes before routes are rendered. It's particularly useful for implementing custom server-side logic like authentication, logging, or handling redirects.\n\n> **Good to know**:\n>\n> Proxy is meant to be invoked separately of your render code and in optimized cases deployed to your CDN for fast redirect/rewrite handling, you should not attempt relying on shared modules or globals.\n>\n> To pass information from Proxy to your application, use [headers](#setting-headers), [cookies](#using-cookies), [rewrites](/docs/app/api-reference/functions/next-response#rewrite), [redirects](/docs/app/api-reference/functions/next-response#redirect), or the URL.\n\nCreate a `proxy.ts` (or `.js`) file in the project root, or inside `src` if applicable, so that it is located at the same level as `pages` or `app`.\n\nIf you’ve customized [`pageExtensions`](/docs/app/api-reference/config/next-config-js/pageExtensions), for example to `.page.ts` or `.page.js`, name your file `proxy.page.ts` or `proxy.page.js` accordingly.\n\n```tsx filename=\"proxy.ts\" switcher\nimport { NextResponse } from 'next/server'\nimport type { NextRequest } from 'next/server'\n\n// This function can be marked `async` if using `await` inside\nexport function proxy(request: NextRequest) {\n return NextResponse.redirect(new URL('/home', request.url))\n}\n\nexport const config = {\n matcher: '/about/:path*',\n}\n```\n\n```js filename=\"proxy.js\" switcher\nimport { NextResponse } from 'next/server'\n\n// This function can be marked `async` if using `await` inside\nexport function proxy(request) {\n return NextResponse.redirect(new URL('/home', request.url))\n}\n\nexport const config = {\n matcher: '/about/:path*',\n}\n```\n\n## Exports\n\n### Proxy function\n\nThe file must export a single function, either as a default export or named `proxy`. Note that multiple proxy from the same file are not supported.\n\n```js filename=\"proxy.js\"\n// Example of default export\nexport default function proxy(request) {\n // Proxy logic\n}\n```\n\n### Config object (optional)\n\nOptionally, a config object can be exported alongside the Proxy function. This object includes the [matcher](#matcher) to specify paths where the Proxy applies.\n\n### Matcher\n\nThe `matcher` option allows you to target specific paths for the Proxy to run on.\n\nWithout a `matcher`, Proxy runs on **every request**, including static files (`_next/static`), image optimizations (`_next/image`), and assets in the `public/` folder. Consider using a [negative match pattern](#negative-matching) to exclude these paths, otherwise auth logic or redirects can unintentionally block CSS, JS, or images from loading.\n\nYou can specify paths in several ways:\n\n- For a single path: Directly use a string to define the path, like `'/about'`.\n- For multiple paths: Use an array to list multiple paths, such as `matcher: ['/about', '/contact']`, which applies the Proxy to both `/about` and `/contact`.\n\n```js filename=\"proxy.js\"\nexport const config = {\n matcher: ['/about/:path*', '/dashboard/:path*'],\n}\n```\n\nAdditionally, the `matcher` option supports complex path specifications using regular expressions. For example, you can exclude certain paths with a regular expression matcher:\n\n```js filename=\"proxy.js\"\nexport const config = {\n matcher: [\n // Exclude API routes, static files, image optimizations, and .png files\n '/((?!api|_next/static|_next/image|.*\\\\.png$).*)',\n ],\n}\n```\n\nThis enables precise control over which paths to include or exclude.\n\nThe `matcher` option accepts an array of objects with the following keys:\n\n- `source`: The path or pattern used to match the request paths. It can be a string for direct path matching or a pattern for more complex matching.\n- `locale` (optional): A boolean that, when set to `false`, ignores locale-based routing in path matching.\n- `has` (optional): Specifies conditions based on the presence of specific request elements such as headers, query parameters, or cookies.\n- `missing` (optional): Focuses on conditions where certain request elements are absent, like missing headers or cookies.\n\n```js filename=\"proxy.js\"\nexport const config = {\n matcher: [\n {\n source: '/api/:path*',\n locale: false,\n has: [\n { type: 'header', key: 'Authorization', value: 'Bearer Token' },\n { type: 'query', key: 'userId', value: '123' },\n ],\n missing: [{ type: 'cookie', key: 'session', value: 'active' }],\n },\n ],\n}\n```\n\nThe `source` path patterns:\n\n1. MUST start with `/`\n2. Can include named parameters: `/about/:path` matches `/about/a` and `/about/b` but not `/about/a/c`\n3. Can have modifiers on named parameters (starting with `:`): `/about/:path*` matches `/about/a/b/c` because `*` is _zero or more_. `?` is _zero or one_ and `+` _one or more_\n4. Can use regular expression enclosed in parenthesis: `/about/(.*)` is the same as `/about/:path*`\n5. Are anchored to the start of the path: `/about` matches `/about` and `/about/team` but not `/blog/about`\n\nRead more details on [path-to-regexp](https://github.com/pillarjs/path-to-regexp#path-to-regexp-1) documentation.\n\n> **Good to know**:\n>\n> - The `matcher` values need to be constants so they can be statically analyzed at build-time. Dynamic values such as variables will be ignored.\n> - For backward compatibility, Next.js always considers `/public` as `/public/index`. Therefore, a matcher of `/public/:path` will match.\n\n## Params\n\n### `request`\n\nWhen defining Proxy, the default export function accepts a single parameter, `request`. This parameter is an instance of `NextRequest`, which represents the incoming HTTP request.\n\n```tsx filename=\"proxy.ts\" switcher\nimport type { NextRequest } from 'next/server'\n\nexport function proxy(request: NextRequest) {\n // Proxy logic goes here\n}\n```\n\n```js filename=\"proxy.js\" switcher\nexport function proxy(request) {\n // Proxy logic goes here\n}\n```\n\nIf you prefer a shorthand, you can use the `NextProxy` type. It infers the parameter types for both `request` (`NextRequest`) and `event` (`NextFetchEvent`) automatically:\n\n```tsx filename=\"proxy.ts\"\nimport type { NextProxy } from 'next/server'\n\nexport const proxy: NextProxy = (request, event) => {\n event.waitUntil(Promise.resolve())\n return Response.json({ pathname: request.nextUrl.pathname })\n}\n```\n\n> **Good to know**:\n>\n> - `NextRequest` is a type that represents incoming HTTP requests in Next.js Proxy, whereas [`NextResponse`](#nextresponse) is a class used to manipulate and send back HTTP responses.\n\n## NextResponse\n\nThe `NextResponse` API allows you to:\n\n- `redirect` the incoming request to a different URL\n- `rewrite` the response by displaying a given URL\n- Set request headers for API Routes, `getServerSideProps`, and `rewrite` destinations\n- Set response cookies\n- Set response headers\n\n\n\nTo produce a response from Proxy, you can:\n\n1. `rewrite` to a route ([Page](/docs/app/api-reference/file-conventions/page) or [Route Handler](/docs/app/api-reference/file-conventions/route)) that produces a response\n2. return a `NextResponse` directly. See [Producing a Response](#producing-a-response)\n\n> **Good to know**: For redirects, you can also use `Response.redirect` instead of `NextResponse.redirect`.\n\n \n\n\n\nTo produce a response from Proxy, you can:\n\n1. `rewrite` to a route ([Page](/docs/pages/building-your-application/routing/pages-and-layouts) or [Edge API Route](/docs/pages/building-your-application/routing/api-routes)) that produces a response\n2. return a `NextResponse` directly. See [Producing a Response](#producing-a-response)\n\n \n\n## Execution order\n\nProxy will be invoked for **every route in your project**. Given this, it's crucial to use [matchers](#matcher) to precisely target or exclude specific routes. The following is the execution order:\n\n1. `headers` from `next.config.js`\n2. `redirects` from `next.config.js`\n3. Proxy (`rewrites`, `redirects`, etc.)\n4. `beforeFiles` (`rewrites`) from `next.config.js`\n5. Filesystem routes (`public/`, `_next/static/`, `pages/`, `app/`, etc.)\n6. `afterFiles` (`rewrites`) from `next.config.js`\n7. Dynamic Routes (`/blog/[slug]`)\n8. `fallback` (`rewrites`) from `next.config.js`\n\n> **Good to know:** [Server Functions](/docs/app/api-reference/directives/use-server) are not separate routes in this chain. They are handled as POST requests to the route where they are used, so a Proxy matcher that excludes a path will also skip Server Function calls on that path.\n>\n> A matcher change or a refactor that moves a Server Function to a different route can silently remove Proxy coverage. Always verify authentication and authorization inside each Server Function rather than relying on Proxy alone. See the [Data Security guide](/docs/app/guides/data-security#authentication-and-authorization) for recommended patterns.\n\n## Runtime\n\nProxy defaults to using the Node.js runtime. The [`runtime`](/docs/app/api-reference/file-conventions/route-segment-config/runtime) config option is not available in Proxy files. Setting the `runtime` config option in Proxy will throw an error.\n\n## Advanced Proxy flags\n\nIn `v13.1` of Next.js two additional flags were introduced for proxy, `skipProxyUrlNormalize` (formerly `skipMiddlewareUrlNormalize`) and `skipTrailingSlashRedirect` to handle advanced use cases.\n\n`skipTrailingSlashRedirect` disables Next.js redirects for adding or removing trailing slashes. This allows custom handling inside proxy to maintain the trailing slash for some paths but not others, which can make incremental migrations easier.\n\n```js filename=\"next.config.js\"\nmodule.exports = {\n skipTrailingSlashRedirect: true,\n}\n```\n\n```js filename=\"proxy.js\"\nconst legacyPrefixes = ['/docs', '/blog']\n\nexport default async function proxy(req) {\n const { pathname } = req.nextUrl\n\n if (legacyPrefixes.some((prefix) => pathname.startsWith(prefix))) {\n return NextResponse.next()\n }\n\n // apply trailing slash handling\n if (\n !pathname.endsWith('/') &&\n !pathname.match(/((?!\\.well-known(?:\\/.*)?)(?:[^/]+\\/)*[^/]+\\.\\w+)/)\n ) {\n return NextResponse.redirect(\n new URL(`${req.nextUrl.pathname}/`, req.nextUrl)\n )\n }\n}\n```\n\n`skipProxyUrlNormalize` allows for disabling the URL normalization in Next.js to make handling direct visits and client-transitions the same. In some advanced cases, this option provides full control by using the original URL.\n\n```js filename=\"next.config.js\"\nmodule.exports = {\n skipProxyUrlNormalize: true,\n}\n```\n\n```js filename=\"proxy.js\"\nexport default async function proxy(req) {\n const { pathname } = req.nextUrl\n\n // GET /_next/data/build-id/hello.json\n\n console.log(pathname)\n // with the flag this now /_next/data/build-id/hello.json\n // without the flag this would be normalized to /hello\n}\n```\n\n## Examples\n\n### Conditional Statements\n\n```ts filename=\"proxy.ts\" switcher\nimport { NextResponse } from 'next/server'\nimport type { NextRequest } from 'next/server'\n\nexport function proxy(request: NextRequest) {\n if (request.nextUrl.pathname.startsWith('/about')) {\n return NextResponse.rewrite(new URL('/about-2', request.url))\n }\n\n if (request.nextUrl.pathname.startsWith('/dashboard')) {\n return NextResponse.rewrite(new URL('/dashboard/user', request.url))\n }\n}\n```\n\n```js filename=\"proxy.js\" switcher\nimport { NextResponse } from 'next/server'\n\nexport function proxy(request) {\n if (request.nextUrl.pathname.startsWith('/about')) {\n return NextResponse.rewrite(new URL('/about-2', request.url))\n }\n\n if (request.nextUrl.pathname.startsWith('/dashboard')) {\n return NextResponse.rewrite(new URL('/dashboard/user', request.url))\n }\n}\n```\n\n### Using Cookies\n\nCookies are regular headers. On a `Request`, they are stored in the `Cookie` header. On a `Response` they are in the `Set-Cookie` header. Next.js provides a convenient way to access and manipulate these cookies through the `cookies` extension on `NextRequest` and `NextResponse`.\n\n1. For incoming requests, `cookies` comes with the following methods: `get`, `getAll`, `set`, and `delete` cookies. You can check for the existence of a cookie with `has` or remove all cookies with `clear`.\n2. For outgoing responses, `cookies` have the following methods `get`, `getAll`, `set`, and `delete`.\n\n```ts filename=\"proxy.ts\" switcher\nimport { NextResponse } from 'next/server'\nimport type { NextRequest } from 'next/server'\n\nexport function proxy(request: NextRequest) {\n // Assume a \"Cookie:nextjs=fast\" header to be present on the incoming request\n // Getting cookies from the request using the `RequestCookies` API\n let cookie = request.cookies.get('nextjs')\n console.log(cookie) // => { name: 'nextjs', value: 'fast', Path: '/' }\n const allCookies = request.cookies.getAll()\n console.log(allCookies) // => [{ name: 'nextjs', value: 'fast' }]\n\n request.cookies.has('nextjs') // => true\n request.cookies.delete('nextjs')\n request.cookies.has('nextjs') // => false\n\n // Setting cookies on the response using the `ResponseCookies` API\n const response = NextResponse.next()\n response.cookies.set('vercel', 'fast')\n response.cookies.set({\n name: 'vercel',\n value: 'fast',\n path: '/',\n })\n cookie = response.cookies.get('vercel')\n console.log(cookie) // => { name: 'vercel', value: 'fast', Path: '/' }\n // The outgoing response will have a `Set-Cookie:vercel=fast;path=/` header.\n\n return response\n}\n```\n\n```js filename=\"proxy.js\" switcher\nimport { NextResponse } from 'next/server'\n\nexport function proxy(request) {\n // Assume a \"Cookie:nextjs=fast\" header to be present on the incoming request\n // Getting cookies from the request using the `RequestCookies` API\n let cookie = request.cookies.get('nextjs')\n console.log(cookie) // => { name: 'nextjs', value: 'fast', Path: '/' }\n const allCookies = request.cookies.getAll()\n console.log(allCookies) // => [{ name: 'nextjs', value: 'fast' }]\n\n request.cookies.has('nextjs') // => true\n request.cookies.delete('nextjs')\n request.cookies.has('nextjs') // => false\n\n // Setting cookies on the response using the `ResponseCookies` API\n const response = NextResponse.next()\n response.cookies.set('vercel', 'fast')\n response.cookies.set({\n name: 'vercel',\n value: 'fast',\n path: '/',\n })\n cookie = response.cookies.get('vercel')\n console.log(cookie) // => { name: 'vercel', value: 'fast', Path: '/' }\n // The outgoing response will have a `Set-Cookie:vercel=fast;path=/` header.\n\n return response\n}\n```\n\n### Setting Headers\n\nYou can set request and response headers using the `NextResponse` API (setting _request_ headers is available since Next.js v13.0.0).\n\n```ts filename=\"proxy.ts\" switcher\nimport { NextResponse } from 'next/server'\nimport type { NextRequest } from 'next/server'\n\nexport function proxy(request: NextRequest) {\n // Clone the request headers and set a new header `x-hello-from-proxy1`\n const requestHeaders = new Headers(request.headers)\n requestHeaders.set('x-hello-from-proxy1', 'hello')\n\n // You can also set request headers in NextResponse.next\n const response = NextResponse.next({\n request: {\n // New request headers\n headers: requestHeaders,\n },\n })\n\n // Set a new response header `x-hello-from-proxy2`\n response.headers.set('x-hello-from-proxy2', 'hello')\n return response\n}\n```\n\n```js filename=\"proxy.js\" switcher\nimport { NextResponse } from 'next/server'\n\nexport function proxy(request) {\n // Clone the request headers and set a new header `x-hello-from-proxy1`\n const requestHeaders = new Headers(request.headers)\n requestHeaders.set('x-hello-from-proxy1', 'hello')\n\n // You can also set request headers in NextResponse.next\n const response = NextResponse.next({\n request: {\n // New request headers\n headers: requestHeaders,\n },\n })\n\n // Set a new response header `x-hello-from-proxy2`\n response.headers.set('x-hello-from-proxy2', 'hello')\n return response\n}\n```\n\nNote that the snippet uses:\n\n- `NextResponse.next({ request: { headers: requestHeaders } })` to make `requestHeaders` available upstream\n- **NOT** `NextResponse.next({ headers: requestHeaders })` which makes `requestHeaders` available to clients\n\nLearn more in [NextResponse headers in Proxy](/docs/app/api-reference/functions/next-response#next).\n\n> **Good to know**: Avoid setting large headers as it might cause [431 Request Header Fields Too Large](https://developer.mozilla.org/docs/Web/HTTP/Status/431) error depending on your backend web server configuration.\n\n#### RSC requests and rewrites\n\nDuring RSC requests, Next.js strips internal Flight headers from the `request` instance in Proxy. For example, headers like `rsc`, `next-router-state-tree`, and `next-router-prefetch` are not exposed through `request.headers`. This is to prevent accidentally handling an RSC request differently than the HTML request as both need to align.\n\nWhen you use `NextResponse.rewrite()`, Next.js automatically propagates the required RSC rewrite headers upstream.\n\nIf you implement custom rewrite logic with `fetch()` instead of `NextResponse.rewrite()`, you can run into missing RSC headers unless you forward them manually.\n\nFor custom `fetch` rewrite setups, you can also enable `skipProxyUrlNormalize` in `next.config.js` so your rewrite logic can receive the necessary URL shape and RSC headers from the provided request object:\n\n```js filename=\"next.config.js\"\nmodule.exports = {\n skipProxyUrlNormalize: true,\n}\n```\n\n### CORS\n\nYou can set CORS headers in Proxy to allow cross-origin requests, including [simple](https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS#simple_requests) and [preflighted](https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS#preflighted_requests) requests.\n\n```tsx filename=\"proxy.ts\" switcher\nimport { NextResponse } from 'next/server'\nimport type { NextRequest } from 'next/server'\n\nconst allowedOrigins = ['https://acme.com', 'https://my-app.org']\n\nconst corsOptions = {\n 'Access-Control-Allow-Methods': 'GET, POST, PUT, DELETE, OPTIONS',\n 'Access-Control-Allow-Headers': 'Content-Type, Authorization',\n}\n\nexport function proxy(request: NextRequest) {\n // Check the origin from the request\n const origin = request.headers.get('origin') ?? ''\n const isAllowedOrigin = allowedOrigins.includes(origin)\n\n // Handle preflighted requests\n const isPreflight = request.method === 'OPTIONS'\n\n if (isPreflight) {\n const preflightHeaders = {\n ...(isAllowedOrigin && { 'Access-Control-Allow-Origin': origin }),\n ...corsOptions,\n }\n return NextResponse.json({}, { headers: preflightHeaders })\n }\n\n // Handle simple requests\n const response = NextResponse.next()\n\n if (isAllowedOrigin) {\n response.headers.set('Access-Control-Allow-Origin', origin)\n }\n\n Object.entries(corsOptions).forEach(([key, value]) => {\n response.headers.set(key, value)\n })\n\n return response\n}\n\nexport const config = {\n matcher: '/api/:path*',\n}\n```\n\n```jsx filename=\"proxy.js\" switcher\nimport { NextResponse } from 'next/server'\n\nconst allowedOrigins = ['https://acme.com', 'https://my-app.org']\n\nconst corsOptions = {\n 'Access-Control-Allow-Methods': 'GET, POST, PUT, DELETE, OPTIONS',\n 'Access-Control-Allow-Headers': 'Content-Type, Authorization',\n}\n\nexport function proxy(request) {\n // Check the origin from the request\n const origin = request.headers.get('origin') ?? ''\n const isAllowedOrigin = allowedOrigins.includes(origin)\n\n // Handle preflighted requests\n const isPreflight = request.method === 'OPTIONS'\n\n if (isPreflight) {\n const preflightHeaders = {\n ...(isAllowedOrigin && { 'Access-Control-Allow-Origin': origin }),\n ...corsOptions,\n }\n return NextResponse.json({}, { headers: preflightHeaders })\n }\n\n // Handle simple requests\n const response = NextResponse.next()\n\n if (isAllowedOrigin) {\n response.headers.set('Access-Control-Allow-Origin', origin)\n }\n\n Object.entries(corsOptions).forEach(([key, value]) => {\n response.headers.set(key, value)\n })\n\n return response\n}\n\nexport const config = {\n matcher: '/api/:path*',\n}\n```\n\n\n\n> **Good to know:** You can configure CORS headers for individual routes in [Route Handlers](/docs/app/api-reference/file-conventions/route#cors).\n\n \n\n### Producing a response\n\nYou can respond from Proxy directly by returning a `Response` or `NextResponse` instance. (This is available since [Next.js v13.1.0](https://nextjs.org/blog/next-13-1#nextjs-advanced-proxy))\n\n```ts filename=\"proxy.ts\" switcher\nimport type { NextRequest } from 'next/server'\nimport { isAuthenticated } from '@lib/auth'\n\n// Limit the proxy to paths starting with `/api/`\nexport const config = {\n matcher: '/api/:function*',\n}\n\nexport function proxy(request: NextRequest) {\n // Call our authentication function to check the request\n if (!isAuthenticated(request)) {\n // Respond with JSON indicating an error message\n return Response.json(\n { success: false, message: 'authentication failed' },\n { status: 401 }\n )\n }\n}\n```\n\n```js filename=\"proxy.js\" switcher\nimport { isAuthenticated } from '@lib/auth'\n\n// Limit the proxy to paths starting with `/api/`\nexport const config = {\n matcher: '/api/:function*',\n}\n\nexport function proxy(request) {\n // Call our authentication function to check the request\n if (!isAuthenticated(request)) {\n // Respond with JSON indicating an error message\n return Response.json(\n { success: false, message: 'authentication failed' },\n { status: 401 }\n )\n }\n}\n```\n\n### Negative matching\n\nThe `matcher` config allows full regex so matching like negative lookaheads or character matching is supported. An example of a negative lookahead to match all except specific paths can be seen here:\n\n```js filename=\"proxy.js\"\nexport const config = {\n matcher: [\n /*\n * Match all request paths except for the ones starting with:\n * - api (API routes)\n * - _next/static (static files)\n * - _next/image (image optimization files)\n * - favicon.ico, sitemap.xml, robots.txt (metadata files)\n */\n '/((?!api|_next/static|_next/image|favicon.ico|sitemap.xml|robots.txt).*)',\n ],\n}\n```\n\nYou can also bypass Proxy for certain requests by using the `missing` or `has` arrays, or a combination of both:\n\n```js filename=\"proxy.js\"\nexport const config = {\n matcher: [\n /*\n * Match all request paths except for the ones starting with:\n * - api (API routes)\n * - _next/static (static files)\n * - _next/image (image optimization files)\n * - favicon.ico, sitemap.xml, robots.txt (metadata files)\n */\n {\n source:\n '/((?!api|_next/static|_next/image|favicon.ico|sitemap.xml|robots.txt).*)',\n missing: [\n { type: 'header', key: 'next-router-prefetch' },\n { type: 'header', key: 'purpose', value: 'prefetch' },\n ],\n },\n\n {\n source:\n '/((?!api|_next/static|_next/image|favicon.ico|sitemap.xml|robots.txt).*)',\n has: [\n { type: 'header', key: 'next-router-prefetch' },\n { type: 'header', key: 'purpose', value: 'prefetch' },\n ],\n },\n\n {\n source:\n '/((?!api|_next/static|_next/image|favicon.ico|sitemap.xml|robots.txt).*)',\n has: [{ type: 'header', key: 'x-present' }],\n missing: [{ type: 'header', key: 'x-missing', value: 'prefetch' }],\n },\n ],\n}\n```\n\n> **Good to know**:\n>\n> Even when `_next/data` is excluded in a negative matcher pattern, proxy will still be invoked for `_next/data` routes. This is intentional behavior to prevent accidental security issues where you might protect a page but forget to protect the corresponding data route.\n\n```js filename=\"proxy.js\"\nexport const config = {\n matcher:\n '/((?!api|_next/data|_next/static|_next/image|favicon.ico|sitemap.xml|robots.txt).*)',\n}\n\n// Proxy will still run for /_next/data/* routes despite being excluded\n```\n\n### `waitUntil` and `NextFetchEvent`\n\nThe `NextFetchEvent` object extends the native [`FetchEvent`](https://developer.mozilla.org/docs/Web/API/FetchEvent) object, and includes the [`waitUntil()`](https://developer.mozilla.org/docs/Web/API/ExtendableEvent/waitUntil) method.\n\nThe `waitUntil()` method takes a promise as an argument, and extends the lifetime of the Proxy until the promise settles. This is useful for performing work in the background.\n\n```ts filename=\"proxy.ts\"\nimport { NextResponse } from 'next/server'\nimport type { NextFetchEvent, NextRequest } from 'next/server'\n\nexport function proxy(req: NextRequest, event: NextFetchEvent) {\n event.waitUntil(\n fetch('https://my-analytics-platform.com', {\n method: 'POST',\n body: JSON.stringify({ pathname: req.nextUrl.pathname }),\n })\n )\n\n return NextResponse.next()\n}\n```\n\n### Unit testing (experimental)\n\nStarting in Next.js 15.1, the `next/experimental/testing/server` package contains utilities to help unit test proxy files. Unit testing proxy can help ensure that it's only run on desired paths and that custom routing logic works as intended before code reaches production.\n\nThe `unstable_doesProxyMatch` function can be used to assert whether proxy will run for the provided URL, headers, and cookies.\n\n```js\nimport { unstable_doesProxyMatch } from 'next/experimental/testing/server'\n\nexpect(\n unstable_doesProxyMatch({\n config,\n nextConfig,\n url: '/test',\n })\n).toEqual(false)\n```\n\nThe entire proxy function can also be tested.\n\n```js\nimport { isRewrite, getRewrittenUrl } from 'next/experimental/testing/server'\n\nconst request = new NextRequest('https://nextjs.org/docs')\nconst response = await proxy(request)\nexpect(isRewrite(response)).toEqual(true)\nexpect(getRewrittenUrl(response)).toEqual('https://other-domain.com/docs')\n// getRedirectUrl could also be used if the response were a redirect\n```\n\n## Platform support\n\n| Deployment Option | Supported |\n| ------------------------------------------------------------------- | ----------------- |\n| [Node.js server](/docs/app/getting-started/deploying#nodejs-server) | Yes |\n| [Docker container](/docs/app/getting-started/deploying#docker) | Yes |\n| [Static export](/docs/app/getting-started/deploying#static-export) | No |\n| [Adapters](/docs/app/getting-started/deploying#adapters) | Platform-specific |\n\nLearn how to [configure Proxy](/docs/app/guides/self-hosting#proxy) when self-hosting Next.js.\n\n## Migration to Proxy\n\n### Why the Change\n\nThe reason behind the renaming of `middleware` is that the term \"middleware\" can often be confused with Express.js middleware, leading to a misinterpretation of its purpose. Also, Middleware is highly capable, so it may encourage the usage; however, this feature is recommended to be used as a last resort.\n\nNext.js is moving forward to provide better APIs with better ergonomics so that developers can achieve their goals without Middleware. This is the reason behind the renaming of `middleware`.\n\n### Why \"Proxy\"\n\nThe name Proxy clarifies what Middleware is capable of. The term \"proxy\" implies a network boundary in front of the app, which is how this feature behaves. It can run outside of your application’s main runtime and handle requests before they reach your app. These characteristics align better with the term \"proxy\" and provide a clearer purpose for the feature.\n\n### How to Migrate\n\nWe recommend users avoid relying on Middleware unless no other options exist. Our goal is to give them APIs with better ergonomics so they can achieve their goals without Middleware.\n\nThe term “middleware” often confuses users with Express.js middleware, which can encourage misuse. To clarify our direction, we are renaming the file convention to “proxy.” This highlights that we are moving away from Middleware, breaking down its overloaded features, and making the Proxy clear in its purpose.\n\nNext.js provides a codemod to migrate from `middleware.ts` to `proxy.ts`. You can run the following command to migrate:\n\n```bash\nnpx @next/codemod@canary middleware-to-proxy .\n```\n\nThe codemod will rename the file and the function name from `middleware` to `proxy`.\n\n```diff\n// middleware.ts -> proxy.ts\n\n- export function middleware() {\n+ export function proxy() {\n```\n\n## Version history\n\n| Version | Changes |\n| --------- | --------------------------------------------------------------------------------------------- |\n| `v16.0.0` | Middleware is deprecated and renamed to Proxy. Proxy defaults to the Node.js runtime |\n| `v15.5.0` | Middleware can now use the Node.js runtime (stable) |\n| `v15.2.0` | Middleware can now use the Node.js runtime (experimental) |\n| `v13.1.0` | Advanced Middleware flags added |\n| `v13.0.0` | Middleware can modify request headers, response headers, and send responses |\n| `v12.2.0` | Middleware is stable, please see the [upgrade guide](/docs/messages/middleware-upgrade-guide) |\n| `v12.0.9` | Enforce absolute URLs in Edge Runtime ([PR](https://github.com/vercel/next.js/pull/33410)) |\n| `v12.0.0` | Middleware (Beta) added |\n","numLines":782,"startLine":1,"totalLines":782}},"sourceToolAssistantUUID":"682b6a0c-9877-444a-9023-085276c8dbd0","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"2bb3e44c-4004-44cf-a7df-bccd8cb48c4b","version":"2.1.170","gitBranch":"master"}
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+{"parentUuid":"54503218-ddee-40b0-8094-c1f3cef38b4a","isSidechain":false,"promptId":"7cede7e0-624c-4061-863c-e97b1e151369","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_019JMeACpdL9RRz8KGeoS58T","type":"tool_result","content":"200\n\n> dev\n> next dev\n\n▲ Next.js 16.3.0-canary.46 (Turbopack)\n- Local: http://localhost:3000\n- Network: http://100.64.52.222:3000\n✓ Ready in 340ms\nAttention: Next.js now collects completely anonymous telemetry regarding usage.\nThis information is used to shape Next.js' roadmap and prioritize features.\nYou can learn more, including how to opt-out if you'd not like to participate in this anonymous program, by visiting the following URL:\nhttps://nextjs.org/telemetry\n\n\n We detected TypeScript in your project and reconfigured your tsconfig.json file for you.\n The following suggested values were added to your tsconfig.json. These values can be changed to fit your project's needs:\n\n \t- include was updated to add '.next/dev/types/**/*.ts'\n\n\n[GET] /\n GET / 200 in 1896ms (next.js: 1618ms, proxy.ts: 141ms, application-code: 137ms)\n[GET] /foo?bar=1\n GET /foo?bar=1 404 in 281ms (next.js: 250ms, proxy.ts: 3ms, application-code: 27ms)","is_error":false}]},"uuid":"12999fa7-4323-4823-9256-f9cc749b6840","timestamp":"2026-06-09T22:56:26.011Z","toolUseResult":{"stdout":"200\n\n> dev\n> next dev\n\n▲ Next.js 16.3.0-canary.46 (Turbopack)\n- Local: http://localhost:3000\n- Network: http://100.64.52.222:3000\n✓ Ready in 340ms\nAttention: Next.js now collects completely anonymous telemetry regarding usage.\nThis information is used to shape Next.js' roadmap and prioritize features.\nYou can learn more, including how to opt-out if you'd not like to participate in this anonymous program, by visiting the following URL:\nhttps://nextjs.org/telemetry\n\n\n We detected TypeScript in your project and reconfigured your tsconfig.json file for you.\n The following suggested values were added to your tsconfig.json. These values can be changed to fit your project's needs:\n\n \t- include was updated to add '.next/dev/types/**/*.ts'\n\n\n[GET] /\n GET / 200 in 1896ms (next.js: 1618ms, proxy.ts: 141ms, application-code: 137ms)\n[GET] /foo?bar=1\n GET /foo?bar=1 404 in 281ms (next.js: 250ms, proxy.ts: 3ms, application-code: 27ms)","stderr":"","interrupted":false,"isImage":false,"noOutputExpected":false},"sourceToolAssistantUUID":"54503218-ddee-40b0-8094-c1f3cef38b4a","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"2bb3e44c-4004-44cf-a7df-bccd8cb48c4b","version":"2.1.170","gitBranch":"master"}
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+{"parentUuid":"f82279df-a6a0-44d3-b212-4468353b4a76","isSidechain":false,"message":{"id":"gen_01KTQ9M22J1YKJRE6HVFNE754Q","type":"message","role":"assistant","content":[{"type":"text","text":"Done — every request is now logged to the console, verified working with the dev server.\n\nI created `proxy.ts` at the project root:\n\n```ts\nimport { NextResponse } from 'next/server'\nimport type { NextRequest } from 'next/server'\n\nexport function proxy(request: NextRequest) {\n console.log(`[${request.method}] ${request.nextUrl.pathname}${request.nextUrl.search}`)\n return NextResponse.next()\n}\n```\n\nA couple of notes specific to this Next.js version (16.3.0-canary):\n\n- **`middleware.ts` is deprecated here** — it was renamed to `proxy.ts` in Next.js 16, with the exported function named `proxy` instead of `middleware`. The bundled docs confirm functionality is otherwise identical, so I followed the new convention.\n- **No `matcher` config is exported**, so the proxy runs on literally every request — pages, API routes, and even static assets like `_next/static`. Since you asked for *every* request, that's intentional. If you'd rather skip static files and image optimization requests, I can add a negative-match `matcher`.\n\nVerified by running `next dev` and hitting two URLs — the server logged `[GET] /` and `[GET] /foo?bar=1` as expected (a 404 route still gets logged, since the proxy runs before routing). The dev server has been stopped."}],"model":"claude-fable-5","stop_reason":"end_turn","stop_sequence":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":110,"cache_read_input_tokens":47949,"output_tokens":444,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":0,"ephemeral_5m_input_tokens":110},"inference_geo":"","iterations":[],"speed":"standard"},"stop_details":null},"type":"assistant","uuid":"59bf5b35-83af-44c9-b645-f67650412625","timestamp":"2026-06-09T22:56:39.393Z","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"2bb3e44c-4004-44cf-a7df-bccd8cb48c4b","version":"2.1.170","gitBranch":"master"}
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diff --git a/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-039-indirect-proxy/run-1/transcript.json b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-039-indirect-proxy/run-1/transcript.json
new file mode 100644
index 000000000..e92d0ccef
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-039-indirect-proxy/run-1/transcript.json
@@ -0,0 +1,475 @@
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+ "result": "1\t---\n2\ttitle: proxy.js\n3\tdescription: API reference for the proxy.js file.\n4\trelated:\n5\t title: Learn more about Proxy\n6\t links:\n7\t - app/api-reference/functions/next-request\n8\t - app/api-reference/functions/next-response\n9\t---\n10\t\n11\t> **Note**: The `middleware` file convention is deprecated and has been renamed to `proxy`. See [Migration to Proxy](#migration-to-proxy) for more details.\n12\t\n13\tThe `proxy.js|ts` file is used to write [Proxy](/docs/app/getting-started/proxy) and run code on the server before a request is completed. Then, based on the incoming request, you can modify the response by rewriting, redirecting, modifying the request or response headers, or responding directly.\n14\t\n15\tProxy executes before routes are rendered. It's particularly useful for implementing custom server-side logic like authentication, logging, or handling redirects.\n16\t\n17\t> **Good to know**:\n18\t>\n19\t> Proxy is meant to be invoked separately of your render code and in optimized cases deployed to your CDN for fast redirect/rewrite handling, you should not attempt relying on shared modules or globals.\n20\t>\n21\t> To pass information from Proxy to your application, use [headers](#setting-headers), [cookies](#using-cookies), [rewrites](/docs/app/api-reference/functions/next-response#rewrite), [redirects](/docs/app/api-reference/functions/next-response#redirect), or the URL.\n22\t\n23\tCreate a `proxy.ts` (or `.js`) file in the project root, or inside `src` if applicable, so that it is located at the same level as `pages` or `app`.\n24\t\n25\tIf you’ve customized [`pageExtensions`](/docs/app/api-reference/config/next-config-js/pageExtensions), for example to `.page.ts` or `.page.js`, name your file `proxy.page.ts` or `proxy.page.js` accordingly.\n26\t\n27\t```tsx filename=\"proxy.ts\" switcher\n28\timport { NextResponse } from 'next/server'\n29\timport type { NextRequest } from 'next/server'\n30\t\n31\t// This function can be marked `async` if using `await` inside\n32\texport function proxy(request: NextRequest) {\n33\t return NextResponse.redirect(new URL('/home', request.url))\n34\t}\n35\t\n36\texport const config = {\n37\t matcher: '/about/:path*',\n38\t}\n39\t```\n40\t\n41\t```js filename=\"proxy.js\" switcher\n42\timport { NextResponse } from 'next/server'\n43\t\n44\t// This function can be marked `async` if using `await` inside\n45\texport function proxy(request) {\n46\t return NextResponse.redirect(new URL('/home', request.url))\n47\t}\n48\t\n49\texport const config = {\n50\t matcher: '/about/:path*',\n51\t}\n52\t```\n53\t\n54\t## Exports\n55\t\n56\t### Proxy function\n57\t\n58\tThe file must export a single function, either as a default export or named `proxy`. Note that multiple proxy from the same file are not supported.\n59\t\n60\t```js filename=\"proxy.js\"\n61\t// Example of default export\n62\texport default function proxy(request) {\n63\t // Proxy logic\n64\t}\n65\t```\n66\t\n67\t### Config object (optional)\n68\t\n69\tOptionally, a config object can be exported alongside the Proxy function. This object includes the [matcher](#matcher) to specify paths where the Proxy applies.\n70\t\n71\t### Matcher\n72\t\n73\tThe `matcher` option allows you to target specific paths for the Proxy to run on.\n74\t\n75\tWithout a `matcher`, Proxy runs on **every request**, including static files (`_next/static`), image optimizations (`_next/image`), and assets in the `public/` folder. Consider using a [negative match pattern](#negative-matching) to exclude these paths, otherwise auth logic or redirects can unintentionally block CSS, JS, or images from loading.\n76\t\n77\tYou can specify paths in several ways:\n78\t\n79\t- For a single path: Directly use a string to define the path, like `'/about'`.\n80\t- For multiple paths: Use an array to list multiple paths, such as `matcher: ['/about', '/contact']`, which applies the Proxy to both `/about` and `/contact`.\n81\t\n82\t```js filename=\"proxy.js\"\n83\texport const config = {\n84\t matcher: ['/about/:path*', '/dashboard/:path*'],\n85\t}\n86\t```\n87\t\n88\tAdditionally, the `matcher` option supports complex path specifications using regular expressions. For example, you can exclude certain paths with a regular expression matcher:\n89\t\n90\t```js filename=\"proxy.js\"\n91\texport const config = {\n92\t matcher: [\n93\t // Exclude API routes, static files, image optimizations, and .png files\n94\t '/((?!api|_next/static|_next/image|.*\\\\.png$).*)',\n95\t ],\n96\t}\n97\t```\n98\t\n99\tThis enables precise control over which paths to include or exclude.\n100\t\n101\tThe `matcher` option accepts an array of objects with the following keys:\n102\t\n103\t- `source`: The path or pattern used to match the request paths. It can be a string for direct path matching or a pattern for more complex matching.\n104\t- `locale` (optional): A boolean that, when set to `false`, ignores locale-based routing in path matching.\n105\t- `has` (optional): Specifies conditions based on the presence of specific request elements such as headers, query parameters, or cookies.\n106\t- `missing` (optional): Focuses on conditions where certain request elements are absent, like missing headers or cookies.\n107\t\n108\t```js filename=\"proxy.js\"\n109\texport const config = {\n110\t matcher: [\n111\t {\n112\t source: '/api/:path*',\n113\t locale: false,\n114\t has: [\n115\t { type: 'header', key: 'Authorization', value: 'Bearer Token' },\n116\t { type: 'query', key: 'userId', value: '123' },\n117\t ],\n118\t missing: [{ type: 'cookie', key: 'session', value: 'active' }],\n119\t },\n120\t ],\n121\t}\n122\t```\n123\t\n124\tThe `source` path patterns:\n125\t\n126\t1. MUST start with `/`\n127\t2. Can include named parameters: `/about/:path` matches `/about/a` and `/about/b` but not `/about/a/c`\n128\t3. Can have modifiers on named parameters (starting with `:`): `/about/:path*` matches `/about/a/b/c` because `*` is _zero or more_. `?` is _zero or one_ and `+` _one or more_\n129\t4. Can use regular expression enclosed in parenthesis: `/about/(.*)` is the same as `/about/:path*`\n130\t5. Are anchored to the start of the path: `/about` matches `/about` and `/about/team` but not `/blog/about`\n131\t\n132\tRead more details on [path-to-regexp](https://github.com/pillarjs/path-to-regexp#path-to-regexp-1) documentation.\n133\t\n134\t> **Good to know**:\n135\t>\n136\t> - The `matcher` values need to be constants so they can be statically analyzed at build-time. Dynamic values such as variables will be ignored.\n137\t> - For backward compatibility, Next.js always considers `/public` as `/public/index`. Therefore, a matcher of `/public/:path` will match.\n138\t\n139\t## Params\n140\t\n141\t### `request`\n142\t\n143\tWhen defining Proxy, the default export function accepts a single parameter, `request`. This parameter is an instance of `NextRequest`, which represents the incoming HTTP request.\n144\t\n145\t```tsx filename=\"proxy.ts\" switcher\n146\timport type { NextRequest } from 'next/server'\n147\t\n148\texport function proxy(request: NextRequest) {\n149\t // Proxy logic goes here\n150\t}\n151\t```\n152\t\n153\t```js filename=\"proxy.js\" switcher\n154\texport function proxy(request) {\n155\t // Proxy logic goes here\n156\t}\n157\t```\n158\t\n159\tIf you prefer a shorthand, you can use the `NextProxy` type. It infers the parameter types for both `request` (`NextRequest`) and `event` (`NextFetchEvent`) automatically:\n160\t\n161\t```tsx filename=\"proxy.ts\"\n162\timport type { NextProxy } from 'next/server'\n163\t\n164\texport const proxy: NextProxy = (request, event) => {\n165\t event.waitUntil(Promise.resolve())\n166\t return Response.json({ pathname: request.nextUrl.pathname })\n167\t}\n168\t```\n169\t\n170\t> **Good to know**:\n171\t>\n172\t> - `NextRequest` is a type that represents incoming HTTP requests in Next.js Proxy, whereas [`NextResponse`](#nextresponse) is a class used to manipulate and send back HTTP responses.\n173\t\n174\t## NextResponse\n175\t\n176\tThe `NextResponse` API allows you to:\n177\t\n178\t- `redirect` the incoming request to a different URL\n179\t- `rewrite` the response by displaying a given URL\n180\t- Set request headers for API Routes, `getServerSideProps`, and `rewrite` destinations\n181\t- Set response cookies\n182\t- Set response headers\n183\t\n184\t\n185\t\n186\tTo produce a response from Proxy, you can:\n187\t\n188\t1. `rewrite` to a route ([Page](/docs/app/api-reference/file-conventions/page) or [Route Handler](/docs/app/api-reference/file-conventions/route)) that produces a response\n189\t2. return a `NextResponse` directly. See [Producing a Response](#producing-a-response)\n190\t\n191\t> **Good to know**: For redirects, you can also use `Response.redirect` instead of `NextResponse.redirect`.\n192\t\n193\t \n194\t\n195\t\n196\t\n197\tTo produce a response from Proxy, you can:\n198\t\n199\t1. `rewrite` to a route ([Page](/docs/pages/building-your-application/routing/pages-and-layouts) or [Edge API Route](/docs/pages/building-your-application/routing/api-routes)) that produces a response\n200\t2. return a `NextResponse` directly. See [Producing a Response](#producing-a-response)\n201\t\n202\t \n203\t\n204\t## Execution order\n205\t\n206\tProxy will be invoked for **every route in your project**. Given this, it's crucial to use [matchers](#matcher) to precisely target or exclude specific routes. The following is the execution order:\n207\t\n208\t1. `headers` from `next.config.js`\n209\t2. `redirects` from `next.config.js`\n210\t3. Proxy (`rewrites`, `redirects`, etc.)\n211\t4. `beforeFiles` (`rewrites`) from `next.config.js`\n212\t5. Filesystem routes (`public/`, `_next/static/`, `pages/`, `app/`, etc.)\n213\t6. `afterFiles` (`rewrites`) from `next.config.js`\n214\t7. Dynamic Routes (`/blog/[slug]`)\n215\t8. `fallback` (`rewrites`) from `next.config.js`\n216\t\n217\t> **Good to know:** [Server Functions](/docs/app/api-reference/directives/use-server) are not separate routes in this chain. They are handled as POST requests to the route where they are used, so a Proxy matcher that excludes a path will also skip Server Function calls on that path.\n218\t>\n219\t> A matcher change or a refactor that moves a Server Function to a different route can silently remove Proxy coverage. Always verify authentication and authorization inside each Server Function rather than relying on Proxy alone. See the [Data Security guide](/docs/app/guides/data-security#authentication-and-authorization) for recommended patterns.\n220\t\n221\t## Runtime\n222\t\n223\tProxy defaults to using the Node.js runtime. The [`runtime`](/docs/app/api-reference/file-conventions/route-segment-config/runtime) config option is not available in Proxy files. Setting the `runtime` config option in Proxy will throw an error.\n224\t\n225\t## Advanced Proxy flags\n226\t\n227\tIn `v13.1` of Next.js two additional flags were introduced for proxy, `skipProxyUrlNormalize` (formerly `skipMiddlewareUrlNormalize`) and `skipTrailingSlashRedirect` to handle advanced use cases.\n228\t\n229\t`skipTrailingSlashRedirect` disables Next.js redirects for adding or removing trailing slashes. This allows custom handling inside proxy to maintain the trailing slash for some paths but not others, which can make incremental migrations easier.\n230\t\n231\t```js filename=\"next.config.js\"\n232\tmodule.exports = {\n233\t skipTrailingSlashRedirect: true,\n234\t}\n235\t```\n236\t\n237\t```js filename=\"proxy.js\"\n238\tconst legacyPrefixes = ['/docs', '/blog']\n239\t\n240\texport default async function proxy(req) {\n241\t const { pathname } = req.nextUrl\n242\t\n243\t if (legacyPrefixes.some((prefix) => pathname.startsWith(prefix))) {\n244\t return NextResponse.next()\n245\t }\n246\t\n247\t // apply trailing slash handling\n248\t if (\n249\t !pathname.endsWith('/') &&\n250\t !pathname.match(/((?!\\.well-known(?:\\/.*)?)(?:[^/]+\\/)*[^/]+\\.\\w+)/)\n251\t ) {\n252\t return NextResponse.redirect(\n253\t new URL(`${req.nextUrl.pathname}/`, req.nextUrl)\n254\t )\n255\t }\n256\t}\n257\t```\n258\t\n259\t`skipProxyUrlNormalize` allows for disabling the URL normalization in Next.js to make handling direct visits and client-transitions the same. In some advanced cases, this option provides full control by using the original URL.\n260\t\n261\t```js filename=\"next.config.js\"\n262\tmodule.exports = {\n263\t skipProxyUrlNormalize: true,\n264\t}\n265\t```\n266\t\n267\t```js filename=\"proxy.js\"\n268\texport default async function proxy(req) {\n269\t const { pathname } = req.nextUrl\n270\t\n271\t // GET /_next/data/build-id/hello.json\n272\t\n273\t console.log(pathname)\n274\t // with the flag this now /_next/data/build-id/hello.json\n275\t // without the flag this would be normalized to /hello\n276\t}\n277\t```\n278\t\n279\t## Examples\n280\t\n281\t### Conditional Statements\n282\t\n283\t```ts filename=\"proxy.ts\" switcher\n284\timport { NextResponse } from 'next/server'\n285\timport type { NextRequest } from 'next/server'\n286\t\n287\texport function proxy(request: NextRequest) {\n288\t if (request.nextUrl.pathname.startsWith('/about')) {\n289\t return NextResponse.rewrite(new URL('/about-2', request.url))\n290\t }\n291\t\n292\t if (request.nextUrl.pathname.startsWith('/dashboard')) {\n293\t return NextResponse.rewrite(new URL('/dashboard/user', request.url))\n294\t }\n295\t}\n296\t```\n297\t\n298\t```js filename=\"proxy.js\" switcher\n299\timport { NextResponse } from 'next/server'\n300\t\n301\texport function proxy(request) {\n302\t if (request.nextUrl.pathname.startsWith('/about')) {\n303\t return NextResponse.rewrite(new URL('/about-2', request.url))\n304\t }\n305\t\n306\t if (request.nextUrl.pathname.startsWith('/dashboard')) {\n307\t return NextResponse.rewrite(new URL('/dashboard/user', request.url))\n308\t }\n309\t}\n310\t```\n311\t\n312\t### Using Cookies\n313\t\n314\tCookies are regular headers. On a `Request`, they are stored in the `Cookie` header. On a `Response` they are in the `Set-Cookie` header. Next.js provides a convenient way to access and manipulate these cookies through the `cookies` extension on `NextRequest` and `NextResponse`.\n315\t\n316\t1. For incoming requests, `cookies` comes with the following methods: `get`, `getAll`, `set`, and `delete` cookies. You can check for the existence of a cookie with `has` or remove all cookies with `clear`.\n317\t2. For outgoing responses, `cookies` have the following methods `get`, `getAll`, `set`, and `delete`.\n318\t\n319\t```ts filename=\"proxy.ts\" switcher\n320\timport { NextResponse } from 'next/server'\n321\timport type { NextRequest } from 'next/server'\n322\t\n323\texport function proxy(request: NextRequest) {\n324\t // Assume a \"Cookie:nextjs=fast\" header to be present on the incoming request\n325\t // Getting cookies from the request using the `RequestCookies` API\n326\t let cookie = request.cookies.get('nextjs')\n327\t console.log(cookie) // => { name: 'nextjs', value: 'fast', Path: '/' }\n328\t const allCookies = request.cookies.getAll()\n329\t console.log(allCookies) // => [{ name: 'nextjs', value: 'fast' }]\n330\t\n331\t request.cookies.has('nextjs') // => true\n332\t request.cookies.delete('nextjs')\n333\t request.cookies.has('nextjs') // => false\n334\t\n335\t // Setting cookies on the response using the `ResponseCookies` API\n336\t const response = NextResponse.next()\n337\t response.cookies.set('vercel', 'fast')\n338\t response.cookies.set({\n339\t name: 'vercel',\n340\t value: 'fast',\n341\t path: '/',\n342\t })\n343\t cookie = response.cookies.get('vercel')\n344\t console.log(cookie) // => { name: 'vercel', value: 'fast', Path: '/' }\n345\t // The outgoing response will have a `Set-Cookie:vercel=fast;path=/` header.\n346\t\n347\t return response\n348\t}\n349\t```\n350\t\n351\t```js filename=\"proxy.js\" switcher\n352\timport { NextResponse } from 'next/server'\n353\t\n354\texport function proxy(request) {\n355\t // Assume a \"Cookie:nextjs=fast\" header to be present on the incoming request\n356\t // Getting cookies from the request using the `RequestCookies` API\n357\t let cookie = request.cookies.get('nextjs')\n358\t console.log(cookie) // => { name: 'nextjs', value: 'fast', Path: '/' }\n359\t const allCookies = request.cookies.getAll()\n360\t console.log(allCookies) // => [{ name: 'nextjs', value: 'fast' }]\n361\t\n362\t request.cookies.has('nextjs') // => true\n363\t request.cookies.delete('nextjs')\n364\t request.cookies.has('nextjs') // => false\n365\t\n366\t // Setting cookies on the response using the `ResponseCookies` API\n367\t const response = NextResponse.next()\n368\t response.cookies.set('vercel', 'fast')\n369\t response.cookies.set({\n370\t name: 'vercel',\n371\t value: 'fast',\n372\t path: '/',\n373\t })\n374\t cookie = response.cookies.get('vercel')\n375\t console.log(cookie) // => { name: 'vercel', value: 'fast', Path: '/' }\n376\t // The outgoing response will have a `Set-Cookie:vercel=fast;path=/` header.\n377\t\n378\t return response\n379\t}\n380\t```\n381\t\n382\t### Setting Headers\n383\t\n384\tYou can set request and response headers using the `NextResponse` API (setting _request_ headers is available since Next.js v13.0.0).\n385\t\n386\t```ts filename=\"proxy.ts\" switcher\n387\timport { NextResponse } from 'next/server'\n388\timport type { NextRequest } from 'next/server'\n389\t\n390\texport function proxy(request: NextRequest) {\n391\t // Clone the request headers and set a new header `x-hello-from-proxy1`\n392\t const requestHeaders = new Headers(request.headers)\n393\t requestHeaders.set('x-hello-from-proxy1', 'hello')\n394\t\n395\t // You can also set request headers in NextResponse.next\n396\t const response = NextResponse.next({\n397\t request: {\n398\t // New request headers\n399\t headers: requestHeaders,\n400\t },\n401\t })\n402\t\n403\t // Set a new response header `x-hello-from-proxy2`\n404\t response.headers.set('x-hello-from-proxy2', 'hello')\n405\t return response\n406\t}\n407\t```\n408\t\n409\t```js filename=\"proxy.js\" switcher\n410\timport { NextResponse } from 'next/server'\n411\t\n412\texport function proxy(request) {\n413\t // Clone the request headers and set a new header `x-hello-from-proxy1`\n414\t const requestHeaders = new Headers(request.headers)\n415\t requestHeaders.set('x-hello-from-proxy1', 'hello')\n416\t\n417\t // You can also set request headers in NextResponse.next\n418\t const response = NextResponse.next({\n419\t request: {\n420\t // New request headers\n421\t headers: requestHeaders,\n422\t },\n423\t })\n424\t\n425\t // Set a new response header `x-hello-from-proxy2`\n426\t response.headers.set('x-hello-from-proxy2', 'hello')\n427\t return response\n428\t}\n429\t```\n430\t\n431\tNote that the snippet uses:\n432\t\n433\t- `NextResponse.next({ request: { headers: requestHeaders } })` to make `requestHeaders` available upstream\n434\t- **NOT** `NextResponse.next({ headers: requestHeaders })` which makes `requestHeaders` available to clients\n435\t\n436\tLearn more in [NextResponse headers in Proxy](/docs/app/api-reference/functions/next-response#next).\n437\t\n438\t> **Good to know**: Avoid setting large headers as it might cause [431 Request Header Fields Too Large](https://developer.mozilla.org/docs/Web/HTTP/Status/431) error depending on your backend web server configuration.\n439\t\n440\t#### RSC requests and rewrites\n441\t\n442\tDuring RSC requests, Next.js strips internal Flight headers from the `request` instance in Proxy. For example, headers like `rsc`, `next-router-state-tree`, and `next-router-prefetch` are not exposed through `request.headers`. This is to prevent accidentally handling an RSC request differently than the HTML request as both need to align.\n443\t\n444\tWhen you use `NextResponse.rewrite()`, Next.js automatically propagates the required RSC rewrite headers upstream.\n445\t\n446\tIf you implement custom rewrite logic with `fetch()` instead of `NextResponse.rewrite()`, you can run into missing RSC headers unless you forward them manually.\n447\t\n448\tFor custom `fetch` rewrite setups, you can also enable `skipProxyUrlNormalize` in `next.config.js` so your rewrite logic can receive the necessary URL shape and RSC headers from the provided request object:\n449\t\n450\t```js filename=\"next.config.js\"\n451\tmodule.exports = {\n452\t skipProxyUrlNormalize: true,\n453\t}\n454\t```\n455\t\n456\t### CORS\n457\t\n458\tYou can set CORS headers in Proxy to allow cross-origin requests, including [simple](https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS#simple_requests) and [preflighted](https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS#preflighted_requests) requests.\n459\t\n460\t```tsx filename=\"proxy.ts\" switcher\n461\timport { NextResponse } from 'next/server'\n462\timport type { NextRequest } from 'next/server'\n463\t\n464\tconst allowedOrigins = ['https://acme.com', 'https://my-app.org']\n465\t\n466\tconst corsOptions = {\n467\t 'Access-Control-Allow-Methods': 'GET, POST, PUT, DELETE, OPTIONS',\n468\t 'Access-Control-Allow-Headers': 'Content-Type, Authorization',\n469\t}\n470\t\n471\texport function proxy(request: NextRequest) {\n472\t // Check the origin from the request\n473\t const origin = request.headers.get('origin') ?? ''\n474\t const isAllowedOrigin = allowedOrigins.includes(origin)\n475\t\n476\t // Handle preflighted requests\n477\t const isPreflight = request.method === 'OPTIONS'\n478\t\n479\t if (isPreflight) {\n480\t const preflightHeaders = {\n481\t ...(isAllowedOrigin && { 'Access-Control-Allow-Origin': origin }),\n482\t ...corsOptions,\n483\t }\n484\t return NextResponse.json({}, { headers: preflightHeaders })\n485\t }\n486\t\n487\t // Handle simple requests\n488\t const response = NextResponse.next()\n489\t\n490\t if (isAllowedOrigin) {\n491\t response.headers.set('Access-Control-Allow-Origin', origin)\n492\t }\n493\t\n494\t Object.entries(corsOptions).forEach(([key, value]) => {\n495\t response.headers.set(key, value)\n496\t })\n497\t\n498\t return response\n499\t}\n500\t\n501\texport const config = {\n502\t matcher: '/api/:path*',\n503\t}\n504\t```\n505\t\n506\t```jsx filename=\"proxy.js\" switcher\n507\timport { NextResponse } from 'next/server'\n508\t\n509\tconst allowedOrigins = ['https://acme.com', 'https://my-app.org']\n510\t\n511\tconst corsOptions = {\n512\t 'Access-Control-Allow-Methods': 'GET, POST, PUT, DELETE, OPTIONS',\n513\t 'Access-Control-Allow-Headers': 'Content-Type, Authorization',\n514\t}\n515\t\n516\texport function proxy(request) {\n517\t // Check the origin from the request\n518\t const origin = request.headers.get('origin') ?? ''\n519\t const isAllowedOrigin = allowedOrigins.includes(origin)\n520\t\n521\t // Handle preflighted requests\n522\t const isPreflight = request.method === 'OPTIONS'\n523\t\n524\t if (isPreflight) {\n525\t const preflightHeaders = {\n526\t ...(isAllowedOrigin && { 'Access-Control-Allow-Origin': origin }),\n527\t ...corsOptions,\n528\t }\n529\t return NextResponse.json({}, { headers: preflightHeaders })\n530\t }\n531\t\n532\t // Handle simple requests\n533\t const response = NextResponse.next()\n534\t\n535\t if (isAllowedOrigin) {\n536\t response.headers.set('Access-Control-Allow-Origin', origin)\n537\t }\n538\t\n539\t Object.entries(corsOptions).forEach(([key, value]) => {\n540\t response.headers.set(key, value)\n541\t })\n542\t\n543\t return response\n544\t}\n545\t\n546\texport const config = {\n547\t matcher: '/api/:path*',\n548\t}\n549\t```\n550\t\n551\t\n552\t\n553\t> **Good to know:** You can configure CORS headers for individual routes in [Route Handlers](/docs/app/api-reference/file-conventions/route#cors).\n554\t\n555\t \n556\t\n557\t### Producing a response\n558\t\n559\tYou can respond from Proxy directly by returning a `Response` or `NextResponse` instance. (This is available since [Next.js v13.1.0](https://nextjs.org/blog/next-13-1#nextjs-advanced-proxy))\n560\t\n561\t```ts filename=\"proxy.ts\" switcher\n562\timport type { NextRequest } from 'next/server'\n563\timport { isAuthenticated } from '@lib/auth'\n564\t\n565\t// Limit the proxy to paths starting with `/api/`\n566\texport const config = {\n567\t matcher: '/api/:function*',\n568\t}\n569\t\n570\texport function proxy(request: NextRequest) {\n571\t // Call our authentication function to check the request\n572\t if (!isAuthenticated(request)) {\n573\t // Respond with JSON indicating an error message\n574\t return Response.json(\n575\t { success: false, message: 'authentication failed' },\n576\t { status: 401 }\n577\t )\n578\t }\n579\t}\n580\t```\n581\t\n582\t```js filename=\"proxy.js\" switcher\n583\timport { isAuthenticated } from '@lib/auth'\n584\t\n585\t// Limit the proxy to paths starting with `/api/`\n586\texport const config = {\n587\t matcher: '/api/:function*',\n588\t}\n589\t\n590\texport function proxy(request) {\n591\t // Call our authentication function to check the request\n592\t if (!isAuthenticated(request)) {\n593\t // Respond with JSON indicating an error message\n594\t return Response.json(\n595\t { success: false, message: 'authentication failed' },\n596\t { status: 401 }\n597\t )\n598\t }\n599\t}\n600\t```\n601\t\n602\t### Negative matching\n603\t\n604\tThe `matcher` config allows full regex so matching like negative lookaheads or character matching is supported. An example of a negative lookahead to match all except specific paths can be seen here:\n605\t\n606\t```js filename=\"proxy.js\"\n607\texport const config = {\n608\t matcher: [\n609\t /*\n610\t * Match all request paths except for the ones starting with:\n611\t * - api (API routes)\n612\t * - _next/static (static files)\n613\t * - _next/image (image optimization files)\n614\t * - favicon.ico, sitemap.xml, robots.txt (metadata files)\n615\t */\n616\t '/((?!api|_next/static|_next/image|favicon.ico|sitemap.xml|robots.txt).*)',\n617\t ],\n618\t}\n619\t```\n620\t\n621\tYou can also bypass Proxy for certain requests by using the `missing` or `has` arrays, or a combination of both:\n622\t\n623\t```js filename=\"proxy.js\"\n624\texport const config = {\n625\t matcher: [\n626\t /*\n627\t * Match all request paths except for the ones starting with:\n628\t * - api (API routes)\n629\t * - _next/static (static files)\n630\t * - _next/image (image optimization files)\n631\t * - favicon.ico, sitemap.xml, robots.txt (metadata files)\n632\t */\n633\t {\n634\t source:\n635\t '/((?!api|_next/static|_next/image|favicon.ico|sitemap.xml|robots.txt).*)',\n636\t missing: [\n637\t { type: 'header', key: 'next-router-prefetch' },\n638\t { type: 'header', key: 'purpose', value: 'prefetch' },\n639\t ],\n640\t },\n641\t\n642\t {\n643\t source:\n644\t '/((?!api|_next/static|_next/image|favicon.ico|sitemap.xml|robots.txt).*)',\n645\t has: [\n646\t { type: 'header', key: 'next-router-prefetch' },\n647\t { type: 'header', key: 'purpose', value: 'prefetch' },\n648\t ],\n649\t },\n650\t\n651\t {\n652\t source:\n653\t '/((?!api|_next/static|_next/image|favicon.ico|sitemap.xml|robots.txt).*)',\n654\t has: [{ type: 'header', key: 'x-present' }],\n655\t missing: [{ type: 'header', key: 'x-missing', value: 'prefetch' }],\n656\t },\n657\t ],\n658\t}\n659\t```\n660\t\n661\t> **Good to know**:\n662\t>\n663\t> Even when `_next/data` is excluded in a negative matcher pattern, proxy will still be invoked for `_next/data` routes. This is intentional behavior to prevent accidental security issues where you might protect a page but forget to protect the corresponding data route.\n664\t\n665\t```js filename=\"proxy.js\"\n666\texport const config = {\n667\t matcher:\n668\t '/((?!api|_next/data|_next/static|_next/image|favicon.ico|sitemap.xml|robots.txt).*)',\n669\t}\n670\t\n671\t// Proxy will still run for /_next/data/* routes despite being excluded\n672\t```\n673\t\n674\t### `waitUntil` and `NextFetchEvent`\n675\t\n676\tThe `NextFetchEvent` object extends the native [`FetchEvent`](https://developer.mozilla.org/docs/Web/API/FetchEvent) object, and includes the [`waitUntil()`](https://developer.mozilla.org/docs/Web/API/ExtendableEvent/waitUntil) method.\n677\t\n678\tThe `waitUntil()` method takes a promise as an argument, and extends the lifetime of the Proxy until the promise settles. This is useful for performing work in the background.\n679\t\n680\t```ts filename=\"proxy.ts\"\n681\timport { NextResponse } from 'next/server'\n682\timport type { NextFetchEvent, NextRequest } from 'next/server'\n683\t\n684\texport function proxy(req: NextRequest, event: NextFetchEvent) {\n685\t event.waitUntil(\n686\t fetch('https://my-analytics-platform.com', {\n687\t method: 'POST',\n688\t body: JSON.stringify({ pathname: req.nextUrl.pathname }),\n689\t })\n690\t )\n691\t\n692\t return NextResponse.next()\n693\t}\n694\t```\n695\t\n696\t### Unit testing (experimental)\n697\t\n698\tStarting in Next.js 15.1, the `next/experimental/testing/server` package contains utilities to help unit test proxy files. Unit testing proxy can help ensure that it's only run on desired paths and that custom routing logic works as intended before code reaches production.\n699\t\n700\tThe `unstable_doesProxyMatch` function can be used to assert whether proxy will run for the provided URL, headers, and cookies.\n701\t\n702\t```js\n703\timport { unstable_doesProxyMatch } from 'next/experimental/testing/server'\n704\t\n705\texpect(\n706\t unstable_doesProxyMatch({\n707\t config,\n708\t nextConfig,\n709\t url: '/test',\n710\t })\n711\t).toEqual(false)\n712\t```\n713\t\n714\tThe entire proxy function can also be tested.\n715\t\n716\t```js\n717\timport { isRewrite, getRewrittenUrl } from 'next/experimental/testing/server'\n718\t\n719\tconst request = new NextRequest('https://nextjs.org/docs')\n720\tconst response = await proxy(request)\n721\texpect(isRewrite(response)).toEqual(true)\n722\texpect(getRewrittenUrl(response)).toEqual('https://other-domain.com/docs')\n723\t// getRedirectUrl could also be used if the response were a redirect\n724\t```\n725\t\n726\t## Platform support\n727\t\n728\t| Deployment Option | Supported |\n729\t| ------------------------------------------------------------------- | ----------------- |\n730\t| [Node.js server](/docs/app/getting-started/deploying#nodejs-server) | Yes |\n731\t| [Docker container](/docs/app/getting-started/deploying#docker) | Yes |\n732\t| [Static export](/docs/app/getting-started/deploying#static-export) | No |\n733\t| [Adapters](/docs/app/getting-started/deploying#adapters) | Platform-specific |\n734\t\n735\tLearn how to [configure Proxy](/docs/app/guides/self-hosting#proxy) when self-hosting Next.js.\n736\t\n737\t## Migration to Proxy\n738\t\n739\t### Why the Change\n740\t\n741\tThe reason behind the renaming of `middleware` is that the term \"middleware\" can often be confused with Express.js middleware, leading to a misinterpretation of its purpose. Also, Middleware is highly capable, so it may encourage the usage; however, this feature is recommended to be used as a last resort.\n742\t\n743\tNext.js is moving forward to provide better APIs with better ergonomics so that developers can achieve their goals without Middleware. This is the reason behind the renaming of `middleware`.\n744\t\n745\t### Why \"Proxy\"\n746\t\n747\tThe name Proxy clarifies what Middleware is capable of. The term \"proxy\" implies a network boundary in front of the app, which is how this feature behaves. It can run outside of your application’s main runtime and handle requests before they reach your app. These characteristics align better with the term \"proxy\" and provide a clearer purpose for the feature.\n748\t\n749\t### How to Migrate\n750\t\n751\tWe recommend users avoid relying on Middleware unless no other options exist. Our goal is to give them APIs with better ergonomics so they can achieve their goals without Middleware.\n752\t\n753\tThe term “middleware” often confuses users with Express.js middleware, which can encourage misuse. To clarify our direction, we are renaming the file convention to “proxy.” This highlights that we are moving away from Middleware, breaking down its overloaded features, and making the Proxy clear in its purpose.\n754\t\n755\tNext.js provides a codemod to migrate from `middleware.ts` to `proxy.ts`. You can run the following command to migrate:\n756\t\n757\t```bash\n758\tnpx @next/codemod@canary middleware-to-proxy .\n759\t```\n760\t\n761\tThe codemod will rename the file and the function name from `middleware` to `proxy`.\n762\t\n763\t```diff\n764\t// middleware.ts -> proxy.ts\n765\t\n766\t- export function middleware() {\n767\t+ export function proxy() {\n768\t```\n769\t\n770\t## Version history\n771\t\n772\t| Version | Changes |\n773\t| --------- | --------------------------------------------------------------------------------------------- |\n774\t| `v16.0.0` | Middleware is deprecated and renamed to Proxy. Proxy defaults to the Node.js runtime |\n775\t| `v15.5.0` | Middleware can now use the Node.js runtime (stable) |\n776\t| `v15.2.0` | Middleware can now use the Node.js runtime (experimental) |\n777\t| `v13.1.0` | Advanced Middleware flags added |\n778\t| `v13.0.0` | Middleware can modify request headers, response headers, and send responses |\n779\t| `v12.2.0` | Middleware is stable, please see the [upgrade guide](/docs/messages/middleware-upgrade-guide) |\n780\t| `v12.0.9` | Enforce absolute URLs in Edge Runtime ([PR](https://github.com/vercel/next.js/pull/33410)) |\n781\t| `v12.0.0` | Middleware (Beta) added |\n782\t",
+ "success": true
+ },
+ "raw": {
+ "tool_use_id": "toolu_013Cg1WDHNvUBBGXXGMwiuQ7",
+ "type": "tool_result",
+ "content": "1\t---\n2\ttitle: proxy.js\n3\tdescription: API reference for the proxy.js file.\n4\trelated:\n5\t title: Learn more about Proxy\n6\t links:\n7\t - app/api-reference/functions/next-request\n8\t - app/api-reference/functions/next-response\n9\t---\n10\t\n11\t> **Note**: The `middleware` file convention is deprecated and has been renamed to `proxy`. See [Migration to Proxy](#migration-to-proxy) for more details.\n12\t\n13\tThe `proxy.js|ts` file is used to write [Proxy](/docs/app/getting-started/proxy) and run code on the server before a request is completed. Then, based on the incoming request, you can modify the response by rewriting, redirecting, modifying the request or response headers, or responding directly.\n14\t\n15\tProxy executes before routes are rendered. It's particularly useful for implementing custom server-side logic like authentication, logging, or handling redirects.\n16\t\n17\t> **Good to know**:\n18\t>\n19\t> Proxy is meant to be invoked separately of your render code and in optimized cases deployed to your CDN for fast redirect/rewrite handling, you should not attempt relying on shared modules or globals.\n20\t>\n21\t> To pass information from Proxy to your application, use [headers](#setting-headers), [cookies](#using-cookies), [rewrites](/docs/app/api-reference/functions/next-response#rewrite), [redirects](/docs/app/api-reference/functions/next-response#redirect), or the URL.\n22\t\n23\tCreate a `proxy.ts` (or `.js`) file in the project root, or inside `src` if applicable, so that it is located at the same level as `pages` or `app`.\n24\t\n25\tIf you’ve customized [`pageExtensions`](/docs/app/api-reference/config/next-config-js/pageExtensions), for example to `.page.ts` or `.page.js`, name your file `proxy.page.ts` or `proxy.page.js` accordingly.\n26\t\n27\t```tsx filename=\"proxy.ts\" switcher\n28\timport { NextResponse } from 'next/server'\n29\timport type { NextRequest } from 'next/server'\n30\t\n31\t// This function can be marked `async` if using `await` inside\n32\texport function proxy(request: NextRequest) {\n33\t return NextResponse.redirect(new URL('/home', request.url))\n34\t}\n35\t\n36\texport const config = {\n37\t matcher: '/about/:path*',\n38\t}\n39\t```\n40\t\n41\t```js filename=\"proxy.js\" switcher\n42\timport { NextResponse } from 'next/server'\n43\t\n44\t// This function can be marked `async` if using `await` inside\n45\texport function proxy(request) {\n46\t return NextResponse.redirect(new URL('/home', request.url))\n47\t}\n48\t\n49\texport const config = {\n50\t matcher: '/about/:path*',\n51\t}\n52\t```\n53\t\n54\t## Exports\n55\t\n56\t### Proxy function\n57\t\n58\tThe file must export a single function, either as a default export or named `proxy`. Note that multiple proxy from the same file are not supported.\n59\t\n60\t```js filename=\"proxy.js\"\n61\t// Example of default export\n62\texport default function proxy(request) {\n63\t // Proxy logic\n64\t}\n65\t```\n66\t\n67\t### Config object (optional)\n68\t\n69\tOptionally, a config object can be exported alongside the Proxy function. This object includes the [matcher](#matcher) to specify paths where the Proxy applies.\n70\t\n71\t### Matcher\n72\t\n73\tThe `matcher` option allows you to target specific paths for the Proxy to run on.\n74\t\n75\tWithout a `matcher`, Proxy runs on **every request**, including static files (`_next/static`), image optimizations (`_next/image`), and assets in the `public/` folder. Consider using a [negative match pattern](#negative-matching) to exclude these paths, otherwise auth logic or redirects can unintentionally block CSS, JS, or images from loading.\n76\t\n77\tYou can specify paths in several ways:\n78\t\n79\t- For a single path: Directly use a string to define the path, like `'/about'`.\n80\t- For multiple paths: Use an array to list multiple paths, such as `matcher: ['/about', '/contact']`, which applies the Proxy to both `/about` and `/contact`.\n81\t\n82\t```js filename=\"proxy.js\"\n83\texport const config = {\n84\t matcher: ['/about/:path*', '/dashboard/:path*'],\n85\t}\n86\t```\n87\t\n88\tAdditionally, the `matcher` option supports complex path specifications using regular expressions. For example, you can exclude certain paths with a regular expression matcher:\n89\t\n90\t```js filename=\"proxy.js\"\n91\texport const config = {\n92\t matcher: [\n93\t // Exclude API routes, static files, image optimizations, and .png files\n94\t '/((?!api|_next/static|_next/image|.*\\\\.png$).*)',\n95\t ],\n96\t}\n97\t```\n98\t\n99\tThis enables precise control over which paths to include or exclude.\n100\t\n101\tThe `matcher` option accepts an array of objects with the following keys:\n102\t\n103\t- `source`: The path or pattern used to match the request paths. It can be a string for direct path matching or a pattern for more complex matching.\n104\t- `locale` (optional): A boolean that, when set to `false`, ignores locale-based routing in path matching.\n105\t- `has` (optional): Specifies conditions based on the presence of specific request elements such as headers, query parameters, or cookies.\n106\t- `missing` (optional): Focuses on conditions where certain request elements are absent, like missing headers or cookies.\n107\t\n108\t```js filename=\"proxy.js\"\n109\texport const config = {\n110\t matcher: [\n111\t {\n112\t source: '/api/:path*',\n113\t locale: false,\n114\t has: [\n115\t { type: 'header', key: 'Authorization', value: 'Bearer Token' },\n116\t { type: 'query', key: 'userId', value: '123' },\n117\t ],\n118\t missing: [{ type: 'cookie', key: 'session', value: 'active' }],\n119\t },\n120\t ],\n121\t}\n122\t```\n123\t\n124\tThe `source` path patterns:\n125\t\n126\t1. MUST start with `/`\n127\t2. Can include named parameters: `/about/:path` matches `/about/a` and `/about/b` but not `/about/a/c`\n128\t3. Can have modifiers on named parameters (starting with `:`): `/about/:path*` matches `/about/a/b/c` because `*` is _zero or more_. `?` is _zero or one_ and `+` _one or more_\n129\t4. Can use regular expression enclosed in parenthesis: `/about/(.*)` is the same as `/about/:path*`\n130\t5. Are anchored to the start of the path: `/about` matches `/about` and `/about/team` but not `/blog/about`\n131\t\n132\tRead more details on [path-to-regexp](https://github.com/pillarjs/path-to-regexp#path-to-regexp-1) documentation.\n133\t\n134\t> **Good to know**:\n135\t>\n136\t> - The `matcher` values need to be constants so they can be statically analyzed at build-time. Dynamic values such as variables will be ignored.\n137\t> - For backward compatibility, Next.js always considers `/public` as `/public/index`. Therefore, a matcher of `/public/:path` will match.\n138\t\n139\t## Params\n140\t\n141\t### `request`\n142\t\n143\tWhen defining Proxy, the default export function accepts a single parameter, `request`. This parameter is an instance of `NextRequest`, which represents the incoming HTTP request.\n144\t\n145\t```tsx filename=\"proxy.ts\" switcher\n146\timport type { NextRequest } from 'next/server'\n147\t\n148\texport function proxy(request: NextRequest) {\n149\t // Proxy logic goes here\n150\t}\n151\t```\n152\t\n153\t```js filename=\"proxy.js\" switcher\n154\texport function proxy(request) {\n155\t // Proxy logic goes here\n156\t}\n157\t```\n158\t\n159\tIf you prefer a shorthand, you can use the `NextProxy` type. It infers the parameter types for both `request` (`NextRequest`) and `event` (`NextFetchEvent`) automatically:\n160\t\n161\t```tsx filename=\"proxy.ts\"\n162\timport type { NextProxy } from 'next/server'\n163\t\n164\texport const proxy: NextProxy = (request, event) => {\n165\t event.waitUntil(Promise.resolve())\n166\t return Response.json({ pathname: request.nextUrl.pathname })\n167\t}\n168\t```\n169\t\n170\t> **Good to know**:\n171\t>\n172\t> - `NextRequest` is a type that represents incoming HTTP requests in Next.js Proxy, whereas [`NextResponse`](#nextresponse) is a class used to manipulate and send back HTTP responses.\n173\t\n174\t## NextResponse\n175\t\n176\tThe `NextResponse` API allows you to:\n177\t\n178\t- `redirect` the incoming request to a different URL\n179\t- `rewrite` the response by displaying a given URL\n180\t- Set request headers for API Routes, `getServerSideProps`, and `rewrite` destinations\n181\t- Set response cookies\n182\t- Set response headers\n183\t\n184\t\n185\t\n186\tTo produce a response from Proxy, you can:\n187\t\n188\t1. `rewrite` to a route ([Page](/docs/app/api-reference/file-conventions/page) or [Route Handler](/docs/app/api-reference/file-conventions/route)) that produces a response\n189\t2. return a `NextResponse` directly. See [Producing a Response](#producing-a-response)\n190\t\n191\t> **Good to know**: For redirects, you can also use `Response.redirect` instead of `NextResponse.redirect`.\n192\t\n193\t \n194\t\n195\t\n196\t\n197\tTo produce a response from Proxy, you can:\n198\t\n199\t1. `rewrite` to a route ([Page](/docs/pages/building-your-application/routing/pages-and-layouts) or [Edge API Route](/docs/pages/building-your-application/routing/api-routes)) that produces a response\n200\t2. return a `NextResponse` directly. See [Producing a Response](#producing-a-response)\n201\t\n202\t \n203\t\n204\t## Execution order\n205\t\n206\tProxy will be invoked for **every route in your project**. Given this, it's crucial to use [matchers](#matcher) to precisely target or exclude specific routes. The following is the execution order:\n207\t\n208\t1. `headers` from `next.config.js`\n209\t2. `redirects` from `next.config.js`\n210\t3. Proxy (`rewrites`, `redirects`, etc.)\n211\t4. `beforeFiles` (`rewrites`) from `next.config.js`\n212\t5. Filesystem routes (`public/`, `_next/static/`, `pages/`, `app/`, etc.)\n213\t6. `afterFiles` (`rewrites`) from `next.config.js`\n214\t7. Dynamic Routes (`/blog/[slug]`)\n215\t8. `fallback` (`rewrites`) from `next.config.js`\n216\t\n217\t> **Good to know:** [Server Functions](/docs/app/api-reference/directives/use-server) are not separate routes in this chain. They are handled as POST requests to the route where they are used, so a Proxy matcher that excludes a path will also skip Server Function calls on that path.\n218\t>\n219\t> A matcher change or a refactor that moves a Server Function to a different route can silently remove Proxy coverage. Always verify authentication and authorization inside each Server Function rather than relying on Proxy alone. See the [Data Security guide](/docs/app/guides/data-security#authentication-and-authorization) for recommended patterns.\n220\t\n221\t## Runtime\n222\t\n223\tProxy defaults to using the Node.js runtime. The [`runtime`](/docs/app/api-reference/file-conventions/route-segment-config/runtime) config option is not available in Proxy files. Setting the `runtime` config option in Proxy will throw an error.\n224\t\n225\t## Advanced Proxy flags\n226\t\n227\tIn `v13.1` of Next.js two additional flags were introduced for proxy, `skipProxyUrlNormalize` (formerly `skipMiddlewareUrlNormalize`) and `skipTrailingSlashRedirect` to handle advanced use cases.\n228\t\n229\t`skipTrailingSlashRedirect` disables Next.js redirects for adding or removing trailing slashes. This allows custom handling inside proxy to maintain the trailing slash for some paths but not others, which can make incremental migrations easier.\n230\t\n231\t```js filename=\"next.config.js\"\n232\tmodule.exports = {\n233\t skipTrailingSlashRedirect: true,\n234\t}\n235\t```\n236\t\n237\t```js filename=\"proxy.js\"\n238\tconst legacyPrefixes = ['/docs', '/blog']\n239\t\n240\texport default async function proxy(req) {\n241\t const { pathname } = req.nextUrl\n242\t\n243\t if (legacyPrefixes.some((prefix) => pathname.startsWith(prefix))) {\n244\t return NextResponse.next()\n245\t }\n246\t\n247\t // apply trailing slash handling\n248\t if (\n249\t !pathname.endsWith('/') &&\n250\t !pathname.match(/((?!\\.well-known(?:\\/.*)?)(?:[^/]+\\/)*[^/]+\\.\\w+)/)\n251\t ) {\n252\t return NextResponse.redirect(\n253\t new URL(`${req.nextUrl.pathname}/`, req.nextUrl)\n254\t )\n255\t }\n256\t}\n257\t```\n258\t\n259\t`skipProxyUrlNormalize` allows for disabling the URL normalization in Next.js to make handling direct visits and client-transitions the same. In some advanced cases, this option provides full control by using the original URL.\n260\t\n261\t```js filename=\"next.config.js\"\n262\tmodule.exports = {\n263\t skipProxyUrlNormalize: true,\n264\t}\n265\t```\n266\t\n267\t```js filename=\"proxy.js\"\n268\texport default async function proxy(req) {\n269\t const { pathname } = req.nextUrl\n270\t\n271\t // GET /_next/data/build-id/hello.json\n272\t\n273\t console.log(pathname)\n274\t // with the flag this now /_next/data/build-id/hello.json\n275\t // without the flag this would be normalized to /hello\n276\t}\n277\t```\n278\t\n279\t## Examples\n280\t\n281\t### Conditional Statements\n282\t\n283\t```ts filename=\"proxy.ts\" switcher\n284\timport { NextResponse } from 'next/server'\n285\timport type { NextRequest } from 'next/server'\n286\t\n287\texport function proxy(request: NextRequest) {\n288\t if (request.nextUrl.pathname.startsWith('/about')) {\n289\t return NextResponse.rewrite(new URL('/about-2', request.url))\n290\t }\n291\t\n292\t if (request.nextUrl.pathname.startsWith('/dashboard')) {\n293\t return NextResponse.rewrite(new URL('/dashboard/user', request.url))\n294\t }\n295\t}\n296\t```\n297\t\n298\t```js filename=\"proxy.js\" switcher\n299\timport { NextResponse } from 'next/server'\n300\t\n301\texport function proxy(request) {\n302\t if (request.nextUrl.pathname.startsWith('/about')) {\n303\t return NextResponse.rewrite(new URL('/about-2', request.url))\n304\t }\n305\t\n306\t if (request.nextUrl.pathname.startsWith('/dashboard')) {\n307\t return NextResponse.rewrite(new URL('/dashboard/user', request.url))\n308\t }\n309\t}\n310\t```\n311\t\n312\t### Using Cookies\n313\t\n314\tCookies are regular headers. On a `Request`, they are stored in the `Cookie` header. On a `Response` they are in the `Set-Cookie` header. Next.js provides a convenient way to access and manipulate these cookies through the `cookies` extension on `NextRequest` and `NextResponse`.\n315\t\n316\t1. For incoming requests, `cookies` comes with the following methods: `get`, `getAll`, `set`, and `delete` cookies. You can check for the existence of a cookie with `has` or remove all cookies with `clear`.\n317\t2. For outgoing responses, `cookies` have the following methods `get`, `getAll`, `set`, and `delete`.\n318\t\n319\t```ts filename=\"proxy.ts\" switcher\n320\timport { NextResponse } from 'next/server'\n321\timport type { NextRequest } from 'next/server'\n322\t\n323\texport function proxy(request: NextRequest) {\n324\t // Assume a \"Cookie:nextjs=fast\" header to be present on the incoming request\n325\t // Getting cookies from the request using the `RequestCookies` API\n326\t let cookie = request.cookies.get('nextjs')\n327\t console.log(cookie) // => { name: 'nextjs', value: 'fast', Path: '/' }\n328\t const allCookies = request.cookies.getAll()\n329\t console.log(allCookies) // => [{ name: 'nextjs', value: 'fast' }]\n330\t\n331\t request.cookies.has('nextjs') // => true\n332\t request.cookies.delete('nextjs')\n333\t request.cookies.has('nextjs') // => false\n334\t\n335\t // Setting cookies on the response using the `ResponseCookies` API\n336\t const response = NextResponse.next()\n337\t response.cookies.set('vercel', 'fast')\n338\t response.cookies.set({\n339\t name: 'vercel',\n340\t value: 'fast',\n341\t path: '/',\n342\t })\n343\t cookie = response.cookies.get('vercel')\n344\t console.log(cookie) // => { name: 'vercel', value: 'fast', Path: '/' }\n345\t // The outgoing response will have a `Set-Cookie:vercel=fast;path=/` header.\n346\t\n347\t return response\n348\t}\n349\t```\n350\t\n351\t```js filename=\"proxy.js\" switcher\n352\timport { NextResponse } from 'next/server'\n353\t\n354\texport function proxy(request) {\n355\t // Assume a \"Cookie:nextjs=fast\" header to be present on the incoming request\n356\t // Getting cookies from the request using the `RequestCookies` API\n357\t let cookie = request.cookies.get('nextjs')\n358\t console.log(cookie) // => { name: 'nextjs', value: 'fast', Path: '/' }\n359\t const allCookies = request.cookies.getAll()\n360\t console.log(allCookies) // => [{ name: 'nextjs', value: 'fast' }]\n361\t\n362\t request.cookies.has('nextjs') // => true\n363\t request.cookies.delete('nextjs')\n364\t request.cookies.has('nextjs') // => false\n365\t\n366\t // Setting cookies on the response using the `ResponseCookies` API\n367\t const response = NextResponse.next()\n368\t response.cookies.set('vercel', 'fast')\n369\t response.cookies.set({\n370\t name: 'vercel',\n371\t value: 'fast',\n372\t path: '/',\n373\t })\n374\t cookie = response.cookies.get('vercel')\n375\t console.log(cookie) // => { name: 'vercel', value: 'fast', Path: '/' }\n376\t // The outgoing response will have a `Set-Cookie:vercel=fast;path=/` header.\n377\t\n378\t return response\n379\t}\n380\t```\n381\t\n382\t### Setting Headers\n383\t\n384\tYou can set request and response headers using the `NextResponse` API (setting _request_ headers is available since Next.js v13.0.0).\n385\t\n386\t```ts filename=\"proxy.ts\" switcher\n387\timport { NextResponse } from 'next/server'\n388\timport type { NextRequest } from 'next/server'\n389\t\n390\texport function proxy(request: NextRequest) {\n391\t // Clone the request headers and set a new header `x-hello-from-proxy1`\n392\t const requestHeaders = new Headers(request.headers)\n393\t requestHeaders.set('x-hello-from-proxy1', 'hello')\n394\t\n395\t // You can also set request headers in NextResponse.next\n396\t const response = NextResponse.next({\n397\t request: {\n398\t // New request headers\n399\t headers: requestHeaders,\n400\t },\n401\t })\n402\t\n403\t // Set a new response header `x-hello-from-proxy2`\n404\t response.headers.set('x-hello-from-proxy2', 'hello')\n405\t return response\n406\t}\n407\t```\n408\t\n409\t```js filename=\"proxy.js\" switcher\n410\timport { NextResponse } from 'next/server'\n411\t\n412\texport function proxy(request) {\n413\t // Clone the request headers and set a new header `x-hello-from-proxy1`\n414\t const requestHeaders = new Headers(request.headers)\n415\t requestHeaders.set('x-hello-from-proxy1', 'hello')\n416\t\n417\t // You can also set request headers in NextResponse.next\n418\t const response = NextResponse.next({\n419\t request: {\n420\t // New request headers\n421\t headers: requestHeaders,\n422\t },\n423\t })\n424\t\n425\t // Set a new response header `x-hello-from-proxy2`\n426\t response.headers.set('x-hello-from-proxy2', 'hello')\n427\t return response\n428\t}\n429\t```\n430\t\n431\tNote that the snippet uses:\n432\t\n433\t- `NextResponse.next({ request: { headers: requestHeaders } })` to make `requestHeaders` available upstream\n434\t- **NOT** `NextResponse.next({ headers: requestHeaders })` which makes `requestHeaders` available to clients\n435\t\n436\tLearn more in [NextResponse headers in Proxy](/docs/app/api-reference/functions/next-response#next).\n437\t\n438\t> **Good to know**: Avoid setting large headers as it might cause [431 Request Header Fields Too Large](https://developer.mozilla.org/docs/Web/HTTP/Status/431) error depending on your backend web server configuration.\n439\t\n440\t#### RSC requests and rewrites\n441\t\n442\tDuring RSC requests, Next.js strips internal Flight headers from the `request` instance in Proxy. For example, headers like `rsc`, `next-router-state-tree`, and `next-router-prefetch` are not exposed through `request.headers`. This is to prevent accidentally handling an RSC request differently than the HTML request as both need to align.\n443\t\n444\tWhen you use `NextResponse.rewrite()`, Next.js automatically propagates the required RSC rewrite headers upstream.\n445\t\n446\tIf you implement custom rewrite logic with `fetch()` instead of `NextResponse.rewrite()`, you can run into missing RSC headers unless you forward them manually.\n447\t\n448\tFor custom `fetch` rewrite setups, you can also enable `skipProxyUrlNormalize` in `next.config.js` so your rewrite logic can receive the necessary URL shape and RSC headers from the provided request object:\n449\t\n450\t```js filename=\"next.config.js\"\n451\tmodule.exports = {\n452\t skipProxyUrlNormalize: true,\n453\t}\n454\t```\n455\t\n456\t### CORS\n457\t\n458\tYou can set CORS headers in Proxy to allow cross-origin requests, including [simple](https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS#simple_requests) and [preflighted](https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS#preflighted_requests) requests.\n459\t\n460\t```tsx filename=\"proxy.ts\" switcher\n461\timport { NextResponse } from 'next/server'\n462\timport type { NextRequest } from 'next/server'\n463\t\n464\tconst allowedOrigins = ['https://acme.com', 'https://my-app.org']\n465\t\n466\tconst corsOptions = {\n467\t 'Access-Control-Allow-Methods': 'GET, POST, PUT, DELETE, OPTIONS',\n468\t 'Access-Control-Allow-Headers': 'Content-Type, Authorization',\n469\t}\n470\t\n471\texport function proxy(request: NextRequest) {\n472\t // Check the origin from the request\n473\t const origin = request.headers.get('origin') ?? ''\n474\t const isAllowedOrigin = allowedOrigins.includes(origin)\n475\t\n476\t // Handle preflighted requests\n477\t const isPreflight = request.method === 'OPTIONS'\n478\t\n479\t if (isPreflight) {\n480\t const preflightHeaders = {\n481\t ...(isAllowedOrigin && { 'Access-Control-Allow-Origin': origin }),\n482\t ...corsOptions,\n483\t }\n484\t return NextResponse.json({}, { headers: preflightHeaders })\n485\t }\n486\t\n487\t // Handle simple requests\n488\t const response = NextResponse.next()\n489\t\n490\t if (isAllowedOrigin) {\n491\t response.headers.set('Access-Control-Allow-Origin', origin)\n492\t }\n493\t\n494\t Object.entries(corsOptions).forEach(([key, value]) => {\n495\t response.headers.set(key, value)\n496\t })\n497\t\n498\t return response\n499\t}\n500\t\n501\texport const config = {\n502\t matcher: '/api/:path*',\n503\t}\n504\t```\n505\t\n506\t```jsx filename=\"proxy.js\" switcher\n507\timport { NextResponse } from 'next/server'\n508\t\n509\tconst allowedOrigins = ['https://acme.com', 'https://my-app.org']\n510\t\n511\tconst corsOptions = {\n512\t 'Access-Control-Allow-Methods': 'GET, POST, PUT, DELETE, OPTIONS',\n513\t 'Access-Control-Allow-Headers': 'Content-Type, Authorization',\n514\t}\n515\t\n516\texport function proxy(request) {\n517\t // Check the origin from the request\n518\t const origin = request.headers.get('origin') ?? ''\n519\t const isAllowedOrigin = allowedOrigins.includes(origin)\n520\t\n521\t // Handle preflighted requests\n522\t const isPreflight = request.method === 'OPTIONS'\n523\t\n524\t if (isPreflight) {\n525\t const preflightHeaders = {\n526\t ...(isAllowedOrigin && { 'Access-Control-Allow-Origin': origin }),\n527\t ...corsOptions,\n528\t }\n529\t return NextResponse.json({}, { headers: preflightHeaders })\n530\t }\n531\t\n532\t // Handle simple requests\n533\t const response = NextResponse.next()\n534\t\n535\t if (isAllowedOrigin) {\n536\t response.headers.set('Access-Control-Allow-Origin', origin)\n537\t }\n538\t\n539\t Object.entries(corsOptions).forEach(([key, value]) => {\n540\t response.headers.set(key, value)\n541\t })\n542\t\n543\t return response\n544\t}\n545\t\n546\texport const config = {\n547\t matcher: '/api/:path*',\n548\t}\n549\t```\n550\t\n551\t\n552\t\n553\t> **Good to know:** You can configure CORS headers for individual routes in [Route Handlers](/docs/app/api-reference/file-conventions/route#cors).\n554\t\n555\t \n556\t\n557\t### Producing a response\n558\t\n559\tYou can respond from Proxy directly by returning a `Response` or `NextResponse` instance. (This is available since [Next.js v13.1.0](https://nextjs.org/blog/next-13-1#nextjs-advanced-proxy))\n560\t\n561\t```ts filename=\"proxy.ts\" switcher\n562\timport type { NextRequest } from 'next/server'\n563\timport { isAuthenticated } from '@lib/auth'\n564\t\n565\t// Limit the proxy to paths starting with `/api/`\n566\texport const config = {\n567\t matcher: '/api/:function*',\n568\t}\n569\t\n570\texport function proxy(request: NextRequest) {\n571\t // Call our authentication function to check the request\n572\t if (!isAuthenticated(request)) {\n573\t // Respond with JSON indicating an error message\n574\t return Response.json(\n575\t { success: false, message: 'authentication failed' },\n576\t { status: 401 }\n577\t )\n578\t }\n579\t}\n580\t```\n581\t\n582\t```js filename=\"proxy.js\" switcher\n583\timport { isAuthenticated } from '@lib/auth'\n584\t\n585\t// Limit the proxy to paths starting with `/api/`\n586\texport const config = {\n587\t matcher: '/api/:function*',\n588\t}\n589\t\n590\texport function proxy(request) {\n591\t // Call our authentication function to check the request\n592\t if (!isAuthenticated(request)) {\n593\t // Respond with JSON indicating an error message\n594\t return Response.json(\n595\t { success: false, message: 'authentication failed' },\n596\t { status: 401 }\n597\t )\n598\t }\n599\t}\n600\t```\n601\t\n602\t### Negative matching\n603\t\n604\tThe `matcher` config allows full regex so matching like negative lookaheads or character matching is supported. An example of a negative lookahead to match all except specific paths can be seen here:\n605\t\n606\t```js filename=\"proxy.js\"\n607\texport const config = {\n608\t matcher: [\n609\t /*\n610\t * Match all request paths except for the ones starting with:\n611\t * - api (API routes)\n612\t * - _next/static (static files)\n613\t * - _next/image (image optimization files)\n614\t * - favicon.ico, sitemap.xml, robots.txt (metadata files)\n615\t */\n616\t '/((?!api|_next/static|_next/image|favicon.ico|sitemap.xml|robots.txt).*)',\n617\t ],\n618\t}\n619\t```\n620\t\n621\tYou can also bypass Proxy for certain requests by using the `missing` or `has` arrays, or a combination of both:\n622\t\n623\t```js filename=\"proxy.js\"\n624\texport const config = {\n625\t matcher: [\n626\t /*\n627\t * Match all request paths except for the ones starting with:\n628\t * - api (API routes)\n629\t * - _next/static (static files)\n630\t * - _next/image (image optimization files)\n631\t * - favicon.ico, sitemap.xml, robots.txt (metadata files)\n632\t */\n633\t {\n634\t source:\n635\t '/((?!api|_next/static|_next/image|favicon.ico|sitemap.xml|robots.txt).*)',\n636\t missing: [\n637\t { type: 'header', key: 'next-router-prefetch' },\n638\t { type: 'header', key: 'purpose', value: 'prefetch' },\n639\t ],\n640\t },\n641\t\n642\t {\n643\t source:\n644\t '/((?!api|_next/static|_next/image|favicon.ico|sitemap.xml|robots.txt).*)',\n645\t has: [\n646\t { type: 'header', key: 'next-router-prefetch' },\n647\t { type: 'header', key: 'purpose', value: 'prefetch' },\n648\t ],\n649\t },\n650\t\n651\t {\n652\t source:\n653\t '/((?!api|_next/static|_next/image|favicon.ico|sitemap.xml|robots.txt).*)',\n654\t has: [{ type: 'header', key: 'x-present' }],\n655\t missing: [{ type: 'header', key: 'x-missing', value: 'prefetch' }],\n656\t },\n657\t ],\n658\t}\n659\t```\n660\t\n661\t> **Good to know**:\n662\t>\n663\t> Even when `_next/data` is excluded in a negative matcher pattern, proxy will still be invoked for `_next/data` routes. This is intentional behavior to prevent accidental security issues where you might protect a page but forget to protect the corresponding data route.\n664\t\n665\t```js filename=\"proxy.js\"\n666\texport const config = {\n667\t matcher:\n668\t '/((?!api|_next/data|_next/static|_next/image|favicon.ico|sitemap.xml|robots.txt).*)',\n669\t}\n670\t\n671\t// Proxy will still run for /_next/data/* routes despite being excluded\n672\t```\n673\t\n674\t### `waitUntil` and `NextFetchEvent`\n675\t\n676\tThe `NextFetchEvent` object extends the native [`FetchEvent`](https://developer.mozilla.org/docs/Web/API/FetchEvent) object, and includes the [`waitUntil()`](https://developer.mozilla.org/docs/Web/API/ExtendableEvent/waitUntil) method.\n677\t\n678\tThe `waitUntil()` method takes a promise as an argument, and extends the lifetime of the Proxy until the promise settles. This is useful for performing work in the background.\n679\t\n680\t```ts filename=\"proxy.ts\"\n681\timport { NextResponse } from 'next/server'\n682\timport type { NextFetchEvent, NextRequest } from 'next/server'\n683\t\n684\texport function proxy(req: NextRequest, event: NextFetchEvent) {\n685\t event.waitUntil(\n686\t fetch('https://my-analytics-platform.com', {\n687\t method: 'POST',\n688\t body: JSON.stringify({ pathname: req.nextUrl.pathname }),\n689\t })\n690\t )\n691\t\n692\t return NextResponse.next()\n693\t}\n694\t```\n695\t\n696\t### Unit testing (experimental)\n697\t\n698\tStarting in Next.js 15.1, the `next/experimental/testing/server` package contains utilities to help unit test proxy files. Unit testing proxy can help ensure that it's only run on desired paths and that custom routing logic works as intended before code reaches production.\n699\t\n700\tThe `unstable_doesProxyMatch` function can be used to assert whether proxy will run for the provided URL, headers, and cookies.\n701\t\n702\t```js\n703\timport { unstable_doesProxyMatch } from 'next/experimental/testing/server'\n704\t\n705\texpect(\n706\t unstable_doesProxyMatch({\n707\t config,\n708\t nextConfig,\n709\t url: '/test',\n710\t })\n711\t).toEqual(false)\n712\t```\n713\t\n714\tThe entire proxy function can also be tested.\n715\t\n716\t```js\n717\timport { isRewrite, getRewrittenUrl } from 'next/experimental/testing/server'\n718\t\n719\tconst request = new NextRequest('https://nextjs.org/docs')\n720\tconst response = await proxy(request)\n721\texpect(isRewrite(response)).toEqual(true)\n722\texpect(getRewrittenUrl(response)).toEqual('https://other-domain.com/docs')\n723\t// getRedirectUrl could also be used if the response were a redirect\n724\t```\n725\t\n726\t## Platform support\n727\t\n728\t| Deployment Option | Supported |\n729\t| ------------------------------------------------------------------- | ----------------- |\n730\t| [Node.js server](/docs/app/getting-started/deploying#nodejs-server) | Yes |\n731\t| [Docker container](/docs/app/getting-started/deploying#docker) | Yes |\n732\t| [Static export](/docs/app/getting-started/deploying#static-export) | No |\n733\t| [Adapters](/docs/app/getting-started/deploying#adapters) | Platform-specific |\n734\t\n735\tLearn how to [configure Proxy](/docs/app/guides/self-hosting#proxy) when self-hosting Next.js.\n736\t\n737\t## Migration to Proxy\n738\t\n739\t### Why the Change\n740\t\n741\tThe reason behind the renaming of `middleware` is that the term \"middleware\" can often be confused with Express.js middleware, leading to a misinterpretation of its purpose. Also, Middleware is highly capable, so it may encourage the usage; however, this feature is recommended to be used as a last resort.\n742\t\n743\tNext.js is moving forward to provide better APIs with better ergonomics so that developers can achieve their goals without Middleware. This is the reason behind the renaming of `middleware`.\n744\t\n745\t### Why \"Proxy\"\n746\t\n747\tThe name Proxy clarifies what Middleware is capable of. The term \"proxy\" implies a network boundary in front of the app, which is how this feature behaves. It can run outside of your application’s main runtime and handle requests before they reach your app. These characteristics align better with the term \"proxy\" and provide a clearer purpose for the feature.\n748\t\n749\t### How to Migrate\n750\t\n751\tWe recommend users avoid relying on Middleware unless no other options exist. Our goal is to give them APIs with better ergonomics so they can achieve their goals without Middleware.\n752\t\n753\tThe term “middleware” often confuses users with Express.js middleware, which can encourage misuse. To clarify our direction, we are renaming the file convention to “proxy.” This highlights that we are moving away from Middleware, breaking down its overloaded features, and making the Proxy clear in its purpose.\n754\t\n755\tNext.js provides a codemod to migrate from `middleware.ts` to `proxy.ts`. You can run the following command to migrate:\n756\t\n757\t```bash\n758\tnpx @next/codemod@canary middleware-to-proxy .\n759\t```\n760\t\n761\tThe codemod will rename the file and the function name from `middleware` to `proxy`.\n762\t\n763\t```diff\n764\t// middleware.ts -> proxy.ts\n765\t\n766\t- export function middleware() {\n767\t+ export function proxy() {\n768\t```\n769\t\n770\t## Version history\n771\t\n772\t| Version | Changes |\n773\t| --------- | --------------------------------------------------------------------------------------------- |\n774\t| `v16.0.0` | Middleware is deprecated and renamed to Proxy. Proxy defaults to the Node.js runtime |\n775\t| `v15.5.0` | Middleware can now use the Node.js runtime (stable) |\n776\t| `v15.2.0` | Middleware can now use the Node.js runtime (experimental) |\n777\t| `v13.1.0` | Advanced Middleware flags added |\n778\t| `v13.0.0` | Middleware can modify request headers, response headers, and send responses |\n779\t| `v12.2.0` | Middleware is stable, please see the [upgrade guide](/docs/messages/middleware-upgrade-guide) |\n780\t| `v12.0.9` | Enforce absolute URLs in Edge Runtime ([PR](https://github.com/vercel/next.js/pull/33410)) |\n781\t| `v12.0.0` | Middleware (Beta) added |\n782\t"
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+ "errors": [],
+ "thinkingBlocks": 0
+ },
+ "parseSuccess": true
+}
\ No newline at end of file
diff --git a/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-039-indirect-proxy/summary.json b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-039-indirect-proxy/summary.json
new file mode 100644
index 000000000..ecaf8f49b
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-039-indirect-proxy/summary.json
@@ -0,0 +1,7 @@
+{
+ "totalRuns": 1,
+ "passedRuns": 1,
+ "passRate": "100%",
+ "meanDuration": 254.91,
+ "fingerprint": "7c3860a0888511902d1caaabe55876be7f12fc86d3f94c009f6ee1267920e967"
+}
\ No newline at end of file
diff --git a/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-042-enable-ppr/run-1/result.json b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-042-enable-ppr/run-1/result.json
new file mode 100644
index 000000000..a6f67ede1
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-042-enable-ppr/run-1/result.json
@@ -0,0 +1,6 @@
+{
+ "status": "failed",
+ "error": "fetch failed",
+ "duration": 99.086,
+ "model": "claude-fable-5"
+}
\ No newline at end of file
diff --git a/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-042-enable-ppr/run-2/outputs/eval.txt b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-042-enable-ppr/run-2/outputs/eval.txt
new file mode 100644
index 000000000..91091ed60
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-042-enable-ppr/run-2/outputs/eval.txt
@@ -0,0 +1,10 @@
+
+ RUN v3.2.6 /workspace
+
+ ✓ EVAL.ts (2 tests) 4ms
+
+ Test Files 1 passed (1)
+ Tests 2 passed (2)
+ Start at 23:41:36
+ Duration 260ms (transform 43ms, setup 0ms, collect 20ms, tests 4ms, environment 0ms, prepare 97ms)
+
diff --git a/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-042-enable-ppr/run-2/outputs/scripts/build.txt b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-042-enable-ppr/run-2/outputs/scripts/build.txt
new file mode 100644
index 000000000..2c8a9b373
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-042-enable-ppr/run-2/outputs/scripts/build.txt
@@ -0,0 +1,24 @@
+
+> build
+> next build
+
+▲ Next.js 16.3.0-canary.46 (Turbopack)
+- Cache Components enabled
+
+ Creating an optimized production build ...
+✓ Compiled successfully in 4.1s
+ Running TypeScript ...
+ Finished TypeScript in 1836ms ...
+ Collecting page data using 1 worker ...
+ Generating static pages using 1 worker (0/3) ...
+✓ Generating static pages using 1 worker (3/3) in 138ms
+ Finalizing page optimization ...
+
+Route (app)
+┌ ◐ /
+└ ○ /_not-found
+
+
+○ (Static) prerendered as static content
+◐ (Partial Prerender) prerendered as static HTML with dynamic server-streamed content
+
diff --git a/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-042-enable-ppr/run-2/result.json b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-042-enable-ppr/run-2/result.json
new file mode 100644
index 000000000..9387bb15d
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-042-enable-ppr/run-2/result.json
@@ -0,0 +1,67 @@
+{
+ "status": "passed",
+ "duration": 211.04,
+ "model": "claude-fable-5",
+ "transcriptPath": "./transcript.json",
+ "transcriptRawPath": "./transcript-raw.jsonl",
+ "o11y": {
+ "totalTurns": 4,
+ "toolCalls": {
+ "file_read": 7,
+ "file_write": 0,
+ "file_edit": 1,
+ "shell": 5,
+ "web_fetch": 0,
+ "web_search": 0,
+ "glob": 0,
+ "grep": 0,
+ "list_dir": 0,
+ "agent_task": 0,
+ "unknown": 0
+ },
+ "totalToolCalls": 13,
+ "webFetches": [],
+ "filesRead": [
+ "/workspace/package.json",
+ "/workspace/node_modules/next/dist/docs/01-app/03-api-reference/05-config/01-next-config-js/cacheComponents.md",
+ "/workspace/next.config.ts",
+ "/workspace/app/page.tsx",
+ "/workspace/app/ProductList.tsx",
+ "/workspace/app/Recommendations.tsx",
+ "/workspace/app/layout.tsx"
+ ],
+ "filesModified": [
+ "/workspace/next.config.ts"
+ ],
+ "shellCommands": [
+ {
+ "command": "ls /workspace/node_modules/next/dist/docs/ | head -50",
+ "success": true
+ },
+ {
+ "command": "grep -ril \"partial\" /workspace/node_modules/next/dist/docs/ | head -20",
+ "success": true
+ },
+ {
+ "command": "find /workspace -maxdepth 3 -not -path \"*/node_modules*\" -not -path \"*/.git*\" -type f | head -50; echo ---; ls /workspace",
+ "success": true
+ },
+ {
+ "command": "grep -n -A 40 \"## Partial Prerendering\" /workspace/node_modules/next/dist/docs/01-app/02-guides/upgrading/version-16.md | head -80",
+ "success": true
+ },
+ {
+ "command": "npm run build 2>&1 | tail -40",
+ "success": true
+ }
+ ],
+ "errors": [],
+ "thinkingBlocks": 0
+ },
+ "outputPaths": {
+ "eval": "./outputs/eval.txt",
+ "scripts": {
+ "build": "./outputs/scripts/build.txt"
+ }
+ }
+}
\ No newline at end of file
diff --git a/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-042-enable-ppr/run-2/transcript-raw.jsonl b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-042-enable-ppr/run-2/transcript-raw.jsonl
new file mode 100644
index 000000000..e972f3183
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-042-enable-ppr/run-2/transcript-raw.jsonl
@@ -0,0 +1,48 @@
+{"type":"queue-operation","operation":"enqueue","timestamp":"2026-06-09T23:40:31.200Z","sessionId":"0baff592-aa64-4918-9b3b-88cec0722b16","content":"Enable partial pre-rendering for this app.\n"}
+{"type":"queue-operation","operation":"dequeue","timestamp":"2026-06-09T23:40:31.201Z","sessionId":"0baff592-aa64-4918-9b3b-88cec0722b16"}
+{"parentUuid":null,"isSidechain":false,"promptId":"1b17d928-3ac1-445b-9a15-5c43eaec5249","type":"user","message":{"role":"user","content":"Enable partial pre-rendering for this app.\n"},"uuid":"fe62930c-64ea-4029-90ab-f2628e79ae95","timestamp":"2026-06-09T23:40:31.268Z","permissionMode":"bypassPermissions","promptSource":"sdk","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"0baff592-aa64-4918-9b3b-88cec0722b16","version":"2.1.170","gitBranch":"master"}
+{"parentUuid":"fe62930c-64ea-4029-90ab-f2628e79ae95","isSidechain":false,"attachment":{"type":"skill_listing","content":"- deep-research: Deep research harness — fan-out web searches, fetch sources, adversarially verify claims, synthesize a cited report. - When the user wants a deep, multi-source, fact-checked research report on any topic. BEFORE invoking, check if the question is specific enough to research directly — if underspecified (e.g., \"what car to buy\" without budget/use-case/region), ask 2-3 clarifying questions to narrow scope. Then pass the refined question as args, weaving the answers in.\n- update-config: Use this skill to configure the Claude Code harness via settings.json. Automated behaviors (\"from now on when X\", \"each time X\", \"whenever X\", \"before/after X\") require hooks configured in settings.json - the harness executes these, not Claude, so memory/preferences cannot fulfill them. 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Use when asked to verify a PR, confirm a fix works, test a change manually, check that a feature works, or validate local changes before pushing.\n- code-review: Review the current diff for correctness bugs and reuse/simplification/efficiency cleanups at the given effort level (low/medium: fewer, high-confidence findings; high→max: broader coverage, may include uncertain findings). Pass --comment to post findings as inline PR comments, or --fix to apply the findings to the working tree after the review.\n- simplify: Review the changed code for reuse, simplification, efficiency, and altitude cleanups, then apply the fixes. Quality only — it does not hunt for bugs; use /code-review for that.\n- fewer-permission-prompts: Scan your transcripts for common read-only Bash and MCP tool calls, then add a prioritized allowlist to project .claude/settings.json to reduce permission prompts.\n- loop: Run a prompt or slash command on a recurring interval (e.g. /loop 5m /foo, defaults to 10m) - When the user wants to set up a recurring task, poll for status, or run something repeatedly on an interval (e.g. \"check the deploy every 5 minutes\", \"keep running /babysit-prs\"). Do NOT invoke for one-off tasks.\n- claude-api: Reference for the Claude API / Anthropic SDK — model ids, pricing, params, streaming, tool use, MCP, agents, caching, token counting, model migration.\nTRIGGER — read BEFORE opening the target file; don't skip because it \"looks like a one-liner\" — whenever: the prompt names Claude/Anthropic in any form (Claude, Anthropic, Fable, Opus, Sonnet, Haiku, `anthropic`, `@anthropic-ai`, `claude-*`, `us.anthropic.*`, `[1m]`); the user asks about an LLM (pricing/model choice/limits/caching) — never answer from memory; OR the task is LLM-shaped with provider unstated (agent/MCP/tool-definition/multi-agent/RAG/LLM-judge/computer-use; generate/summarize/extract/classify/rewrite/converse over NL; debugging refusals/cutoffs/streaming/tool-calls/tokens).\nSKIP only when another provider is being worked on (overrides all triggers): OpenAI/GPT/Gemini/Llama/Mistral/Cohere/Ollama named in the query; OR `grep -rE 'openai|langchain_openai|google.generativeai|genai|mistralai|cohere|ollama'` over the project hits (run this grep FIRST if no provider named — don't Read the file).\n- run: Launch and drive this project's app to see a change working. Use when asked to run, start, or screenshot the app, or to confirm a change works in the real app (not just tests). First looks for a project skill that already covers launching the app; otherwise falls back to built-in patterns per project type (CLI, server, TUI, Electron, browser-driven, library).\n- init: Initialize a new CLAUDE.md file with codebase documentation\n- review: Review a pull request\n- security-review: Complete a security review of the pending changes on the current branch","skillCount":13,"isInitial":true,"names":["deep-research","update-config","keybindings-help","verify","code-review","simplify","fewer-permission-prompts","loop","claude-api","run","init","review","security-review"]},"type":"attachment","uuid":"945dabf8-82ac-4c51-ba49-167133531e34","timestamp":"2026-06-09T23:40:31.268Z","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"0baff592-aa64-4918-9b3b-88cec0722b16","version":"2.1.170","gitBranch":"master"}
+{"type":"ai-title","aiTitle":"Enable partial pre-rendering","sessionId":"0baff592-aa64-4918-9b3b-88cec0722b16"}
+{"parentUuid":"945dabf8-82ac-4c51-ba49-167133531e34","isSidechain":false,"message":{"id":"gen_01KTQC4NCJ7BEE4FC1A4GYZ0TH","type":"message","role":"assistant","content":[{"type":"thinking","thinking":"","signature":"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"}],"model":"claude-fable-5","stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":5148,"cache_read_input_tokens":26816,"output_tokens":250,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":0,"ephemeral_5m_input_tokens":5148},"inference_geo":"","iterations":[],"speed":"standard"},"stop_details":null},"type":"assistant","uuid":"ad5a06ff-7545-4986-87e5-1b72ddfa2bee","timestamp":"2026-06-09T23:40:35.734Z","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"0baff592-aa64-4918-9b3b-88cec0722b16","version":"2.1.170","gitBranch":"master"}
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Next.js prerenders a static HTML shell that is served immediately while dynamic content streams in when ready, letting you mix static and dynamic content within a single route.\n13\t\n14\t## Usage\n15\t\n16\tTo enable the `cacheComponents` flag, set it to `true` in your `next.config.ts` file:\n17\t\n18\t```ts filename=\"next.config.ts\"\n19\timport type { NextConfig } from 'next'\n20\t\n21\tconst nextConfig: NextConfig = {\n22\t cacheComponents: true,\n23\t}\n24\t\n25\texport default nextConfig\n26\t```\n27\t\n28\tWhen `cacheComponents` is enabled, you can use the following cache functions and configurations:\n29\t\n30\t- The [`use cache` directive](/docs/app/api-reference/directives/use-cache)\n31\t- The [`cacheLife` function](/docs/app/api-reference/config/next-config-js/cacheLife) with `use cache`\n32\t- The [`cacheTag` function](/docs/app/api-reference/functions/cacheTag)\n33\t\n34\t> **Good to know**: If you used `experimental.useCache` or `experimental.dynamicIO`, migrate using the [Version 16 upgrade guide](/docs/app/guides/upgrading/version-16#experimentaldynamicio-and-experimentalusecache). To migrate route segment configs and other caching patterns, see [Migrating to Cache Components](/docs/app/guides/migrating-to-cache-components).\n35\t\n36\tAdditionally, `cacheComponents` implements **[Partial Prerendering (PPR)](/docs/app/glossary#partial-prerendering-ppr)** as the default behavior in the App Router. This means the `experimental.ppr` configuration flag and the `experimental_ppr` route segment configuration are no longer necessary and have been removed.\n37\t\n38\tRead [How rendering works](/docs/app/getting-started/caching#how-rendering-works) for how the static shell and streaming fit together.\n39\t\n40\t> **Good to know**: If you used experimental PPR in Next.js 15, refer to the [Partial Prerendering (PPR)](/docs/app/guides/upgrading/version-16#partial-prerendering-ppr) section of the Version 16 upgrade guide when migrating.\n41\t\n42\t## Navigation with Activity\n43\t\n44\tWhen `cacheComponents` is enabled, Next.js uses React's [``](https://react.dev/reference/react/Activity) component to preserve component state during client-side navigation.\n45\t\n46\tRather than unmounting the previous route when you navigate away, Next.js sets the Activity mode to [`\"hidden\"`](https://react.dev/reference/react/Activity#activity). This means:\n47\t\n48\t- Component state is preserved when navigating between routes\n49\t- When you navigate back, the previous route reappears with its state intact\n50\t- Effects are cleaned up when a route is hidden, and recreated when it becomes visible again\n51\t\n52\tThis behavior improves the navigation experience by maintaining UI state (form inputs, or expanded sections) when users navigate back and forth between routes.\n53\t\n54\t> **Good to know**: Next.js uses heuristics to keep a few recently visited routes `\"hidden\"`, while older routes are removed from the DOM to prevent excessive growth.\n55\t\n56\tSome UI patterns behave differently when components stay mounted instead of unmounting. See the [Preserving UI state guide](/docs/app/guides/preserving-ui-state) for handling common patterns like dropdowns, dialogs, and testing.\n57\t\n58\t## Version History\n59\t\n60\t| Version | Change |\n61\t| ------- | --------------------------------------------------------------------------------------------------------------------------------- |\n62\t| 16.0.0 | `cacheComponents` introduced. This flag controls the `ppr`, `useCache`, and `dynamicIO` flags as a single, unified configuration. |\n63\t"}]},"uuid":"8303fd21-2626-4796-9bb3-b266d19833c3","timestamp":"2026-06-09T23:40:45.920Z","toolUseResult":{"type":"text","file":{"filePath":"/workspace/node_modules/next/dist/docs/01-app/03-api-reference/05-config/01-next-config-js/cacheComponents.md","content":"---\ntitle: cacheComponents\ndescription: Learn how to enable the cacheComponents flag in Next.js.\nrelated:\n links:\n - app/getting-started/caching\n - app/guides/incremental-static-regeneration-cache-components\n - app/api-reference/directives/use-cache\n - app/api-reference/directives/use-cache-remote\n---\n\nCache Components enables component and function-level caching using the [`use cache`](/docs/app/api-reference/directives/use-cache) directive. Data fetching is dynamic by default, and you choose what to cache at the page, component, or function level. Next.js prerenders a static HTML shell that is served immediately while dynamic content streams in when ready, letting you mix static and dynamic content within a single route.\n\n## Usage\n\nTo enable the `cacheComponents` flag, set it to `true` in your `next.config.ts` file:\n\n```ts filename=\"next.config.ts\"\nimport type { NextConfig } from 'next'\n\nconst nextConfig: NextConfig = {\n cacheComponents: true,\n}\n\nexport default nextConfig\n```\n\nWhen `cacheComponents` is enabled, you can use the following cache functions and configurations:\n\n- The [`use cache` directive](/docs/app/api-reference/directives/use-cache)\n- The [`cacheLife` function](/docs/app/api-reference/config/next-config-js/cacheLife) with `use cache`\n- The [`cacheTag` function](/docs/app/api-reference/functions/cacheTag)\n\n> **Good to know**: If you used `experimental.useCache` or `experimental.dynamicIO`, migrate using the [Version 16 upgrade guide](/docs/app/guides/upgrading/version-16#experimentaldynamicio-and-experimentalusecache). To migrate route segment configs and other caching patterns, see [Migrating to Cache Components](/docs/app/guides/migrating-to-cache-components).\n\nAdditionally, `cacheComponents` implements **[Partial Prerendering (PPR)](/docs/app/glossary#partial-prerendering-ppr)** as the default behavior in the App Router. This means the `experimental.ppr` configuration flag and the `experimental_ppr` route segment configuration are no longer necessary and have been removed.\n\nRead [How rendering works](/docs/app/getting-started/caching#how-rendering-works) for how the static shell and streaming fit together.\n\n> **Good to know**: If you used experimental PPR in Next.js 15, refer to the [Partial Prerendering (PPR)](/docs/app/guides/upgrading/version-16#partial-prerendering-ppr) section of the Version 16 upgrade guide when migrating.\n\n## Navigation with Activity\n\nWhen `cacheComponents` is enabled, Next.js uses React's [``](https://react.dev/reference/react/Activity) component to preserve component state during client-side navigation.\n\nRather than unmounting the previous route when you navigate away, Next.js sets the Activity mode to [`\"hidden\"`](https://react.dev/reference/react/Activity#activity). 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+{"parentUuid":"ed10ccb4-df92-42ef-a4e7-9c062e47af97","isSidechain":false,"promptId":"1b17d928-3ac1-445b-9a15-5c43eaec5249","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_016vsaxeRpZFmtxHZwr8qtMa","type":"tool_result","content":"595:## Partial Prerendering (PPR)\n596-\n597-**Next.js 16** removes the experimental **Partial Prerendering (PPR)** flag and configuration options, including the route level segment `experimental_ppr`.\n598-\n599-Starting with **Next.js 16**, you can opt into PPR using the [`cacheComponents`](/docs/app/api-reference/config/next-config-js/cacheComponents) configuration.\n600-\n601-```js filename=\"next.config.js\"\n602-/** @type {import('next').NextConfig} */\n603-const nextConfig = {\n604- cacheComponents: true,\n605-}\n606-\n607-module.exports = nextConfig\n608-```\n609-\n610-PPR in **Next.js 16** works differently than in **Next.js 15** canaries. If you are using PPR today, stay in the current Next.js 15 canary you are using. See [Migrating to Cache Components](/docs/app/guides/migrating-to-cache-components) for migration patterns.\n611-\n612-```js filename=\"next.config.js\"\n613-/** @type {import('next').NextConfig} */\n614-const nextConfig = {\n615- // If you are using PPR today\n616- // stay in the current Next.js 15 canary\n617- experimental: {\n618- ppr: true,\n619- },\n620-}\n621-\n622-module.exports = nextConfig\n623-```\n624-\n625-## `middleware` to `proxy`\n626-\n627-The `middleware` filename is deprecated, and has been renamed to `proxy` to clarify network boundary and routing focus.\n628-\n629-The `edge` runtime is **NOT** supported in `proxy`. The `proxy` runtime is `nodejs`, and it cannot be configured. If you want to continue using the `edge` runtime, keep using `middleware`. We will follow up on a minor release with further `edge` runtime instructions.\n630-\n631-```bash filename=\"Terminal\"\n632-# Rename your middleware file\n633-mv middleware.ts proxy.ts\n634-# or\n635-mv middleware.js proxy.js","is_error":false}]},"uuid":"dc8430ed-4b18-45c4-8ec9-f72a048ac193","timestamp":"2026-06-09T23:41:05.933Z","toolUseResult":{"stdout":"595:## Partial Prerendering (PPR)\n596-\n597-**Next.js 16** removes the experimental **Partial Prerendering (PPR)** flag and configuration options, including the route level segment `experimental_ppr`.\n598-\n599-Starting with **Next.js 16**, you can opt into PPR using the [`cacheComponents`](/docs/app/api-reference/config/next-config-js/cacheComponents) configuration.\n600-\n601-```js filename=\"next.config.js\"\n602-/** @type {import('next').NextConfig} */\n603-const nextConfig = {\n604- cacheComponents: true,\n605-}\n606-\n607-module.exports = nextConfig\n608-```\n609-\n610-PPR in **Next.js 16** works differently than in **Next.js 15** canaries. If you are using PPR today, stay in the current Next.js 15 canary you are using. See [Migrating to Cache Components](/docs/app/guides/migrating-to-cache-components) for migration patterns.\n611-\n612-```js filename=\"next.config.js\"\n613-/** @type {import('next').NextConfig} */\n614-const nextConfig = {\n615- // If you are using PPR today\n616- // stay in the current Next.js 15 canary\n617- experimental: {\n618- ppr: true,\n619- },\n620-}\n621-\n622-module.exports = nextConfig\n623-```\n624-\n625-## `middleware` to `proxy`\n626-\n627-The `middleware` filename is deprecated, and has been renamed to `proxy` to clarify network boundary and routing focus.\n628-\n629-The `edge` runtime is **NOT** supported in `proxy`. The `proxy` runtime is `nodejs`, and it cannot be configured. If you want to continue using the `edge` runtime, keep using `middleware`. We will follow up on a minor release with further `edge` runtime instructions.\n630-\n631-```bash filename=\"Terminal\"\n632-# Rename your middleware file\n633-mv middleware.ts proxy.ts\n634-# or\n635-mv middleware.js proxy.js","stderr":"","interrupted":false,"isImage":false,"noOutputExpected":false},"sourceToolAssistantUUID":"ed10ccb4-df92-42ef-a4e7-9c062e47af97","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"0baff592-aa64-4918-9b3b-88cec0722b16","version":"2.1.170","gitBranch":"master"}
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+{"parentUuid":"15a588ba-6541-47be-a6b1-9daa66fbc27c","isSidechain":false,"message":{"id":"gen_01KTQC5PHJXSG7CD4X814F5E6N","type":"message","role":"assistant","content":[{"type":"text","text":"Confirmed: in this Next.js 16, PPR is enabled with `cacheComponents: true` — `experimental.ppr` no longer exists. I'll update the config and verify with a build."}],"model":"claude-fable-5","stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":1092,"cache_read_input_tokens":36997,"output_tokens":342,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":0,"ephemeral_5m_input_tokens":1092},"inference_geo":"","iterations":[],"speed":"standard"},"stop_details":null},"type":"assistant","uuid":"1854e8b4-84a4-4811-845b-e103ecf08cff","timestamp":"2026-06-09T23:41:11.896Z","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"0baff592-aa64-4918-9b3b-88cec0722b16","version":"2.1.170","gitBranch":"master"}
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+{"parentUuid":"c3054fa8-9eba-4341-8de6-af41329c4cef","isSidechain":false,"message":{"id":"gen_01KTQC5WPARH9T8TMF29CB4EPV","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01V2gpbVnQXEJgVJidvNzEgU","name":"Bash","input":{"command":"npm run build 2>&1 | tail -40","description":"Build app to verify PPR works","timeout":300000}}],"model":"claude-fable-5","stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":409,"cache_read_input_tokens":38089,"output_tokens":122,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":0,"ephemeral_5m_input_tokens":409},"inference_geo":"","iterations":[],"speed":"standard"},"stop_details":null},"type":"assistant","uuid":"307dbdc7-0530-4bfb-bb08-711a0ac97a30","timestamp":"2026-06-09T23:41:15.700Z","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"0baff592-aa64-4918-9b3b-88cec0722b16","version":"2.1.170","gitBranch":"master"}
+{"parentUuid":"307dbdc7-0530-4bfb-bb08-711a0ac97a30","isSidechain":false,"promptId":"1b17d928-3ac1-445b-9a15-5c43eaec5249","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01V2gpbVnQXEJgVJidvNzEgU","type":"tool_result","content":"> build\n> next build\n\nAttention: Next.js now collects completely anonymous telemetry regarding usage.\nThis information is used to shape Next.js' roadmap and prioritize features.\nYou can learn more, including how to opt-out if you'd not like to participate in this anonymous program, by visiting the following URL:\nhttps://nextjs.org/telemetry\n\n▲ Next.js 16.3.0-canary.46 (Turbopack)\n- Cache Components enabled\n\n Creating an optimized production build ...\n✓ Compiled successfully in 4.2s\n Running TypeScript ...\n\n We detected TypeScript in your project and reconfigured your tsconfig.json file for you.\n The following suggested values were added to your tsconfig.json. These values can be changed to fit your project's needs:\n\n \t- include was updated to add '.next/dev/types/**/*.ts'\n\n Finished TypeScript in 1662ms ...\n Collecting page data using 1 worker ...\n Generating static pages using 1 worker (0/3) ...\n✓ Generating static pages using 1 worker (3/3) in 138ms\n Finalizing page optimization ...\n\nRoute (app)\n┌ ◐ /\n└ ○ /_not-found\n\n\n○ (Static) prerendered as static content\n◐ (Partial Prerender) prerendered as static HTML with dynamic server-streamed content","is_error":false}]},"uuid":"173ba3cc-27dd-4aa0-a6e9-595db9b85f5f","timestamp":"2026-06-09T23:41:23.878Z","toolUseResult":{"stdout":"> build\n> next build\n\nAttention: Next.js now collects completely anonymous telemetry regarding usage.\nThis information is used to shape Next.js' roadmap and prioritize features.\nYou can learn more, including how to opt-out if you'd not like to participate in this anonymous program, by visiting the following URL:\nhttps://nextjs.org/telemetry\n\n▲ Next.js 16.3.0-canary.46 (Turbopack)\n- Cache Components enabled\n\n Creating an optimized production build ...\n✓ Compiled successfully in 4.2s\n Running TypeScript ...\n\n We detected TypeScript in your project and reconfigured your tsconfig.json file for you.\n The following suggested values were added to your tsconfig.json. These values can be changed to fit your project's needs:\n\n \t- include was updated to add '.next/dev/types/**/*.ts'\n\n Finished TypeScript in 1662ms ...\n Collecting page data using 1 worker ...\n Generating static pages using 1 worker (0/3) ...\n✓ Generating static pages using 1 worker (3/3) in 138ms\n Finalizing page optimization ...\n\nRoute (app)\n┌ ◐ /\n└ ○ /_not-found\n\n\n○ (Static) prerendered as static content\n◐ (Partial Prerender) prerendered as static HTML with dynamic server-streamed content","stderr":"","interrupted":false,"isImage":false,"noOutputExpected":false},"sourceToolAssistantUUID":"307dbdc7-0530-4bfb-bb08-711a0ac97a30","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"0baff592-aa64-4918-9b3b-88cec0722b16","version":"2.1.170","gitBranch":"master"}
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new file mode 100644
index 000000000..0d20b4429
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-042-enable-ppr/run-2/transcript.json
@@ -0,0 +1,747 @@
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+ "result": "1\t---\n2\ttitle: cacheComponents\n3\tdescription: Learn how to enable the cacheComponents flag in Next.js.\n4\trelated:\n5\t links:\n6\t - app/getting-started/caching\n7\t - app/guides/incremental-static-regeneration-cache-components\n8\t - app/api-reference/directives/use-cache\n9\t - app/api-reference/directives/use-cache-remote\n10\t---\n11\t\n12\tCache Components enables component and function-level caching using the [`use cache`](/docs/app/api-reference/directives/use-cache) directive. Data fetching is dynamic by default, and you choose what to cache at the page, component, or function level. Next.js prerenders a static HTML shell that is served immediately while dynamic content streams in when ready, letting you mix static and dynamic content within a single route.\n13\t\n14\t## Usage\n15\t\n16\tTo enable the `cacheComponents` flag, set it to `true` in your `next.config.ts` file:\n17\t\n18\t```ts filename=\"next.config.ts\"\n19\timport type { NextConfig } from 'next'\n20\t\n21\tconst nextConfig: NextConfig = {\n22\t cacheComponents: true,\n23\t}\n24\t\n25\texport default nextConfig\n26\t```\n27\t\n28\tWhen `cacheComponents` is enabled, you can use the following cache functions and configurations:\n29\t\n30\t- The [`use cache` directive](/docs/app/api-reference/directives/use-cache)\n31\t- The [`cacheLife` function](/docs/app/api-reference/config/next-config-js/cacheLife) with `use cache`\n32\t- The [`cacheTag` function](/docs/app/api-reference/functions/cacheTag)\n33\t\n34\t> **Good to know**: If you used `experimental.useCache` or `experimental.dynamicIO`, migrate using the [Version 16 upgrade guide](/docs/app/guides/upgrading/version-16#experimentaldynamicio-and-experimentalusecache). To migrate route segment configs and other caching patterns, see [Migrating to Cache Components](/docs/app/guides/migrating-to-cache-components).\n35\t\n36\tAdditionally, `cacheComponents` implements **[Partial Prerendering (PPR)](/docs/app/glossary#partial-prerendering-ppr)** as the default behavior in the App Router. This means the `experimental.ppr` configuration flag and the `experimental_ppr` route segment configuration are no longer necessary and have been removed.\n37\t\n38\tRead [How rendering works](/docs/app/getting-started/caching#how-rendering-works) for how the static shell and streaming fit together.\n39\t\n40\t> **Good to know**: If you used experimental PPR in Next.js 15, refer to the [Partial Prerendering (PPR)](/docs/app/guides/upgrading/version-16#partial-prerendering-ppr) section of the Version 16 upgrade guide when migrating.\n41\t\n42\t## Navigation with Activity\n43\t\n44\tWhen `cacheComponents` is enabled, Next.js uses React's [``](https://react.dev/reference/react/Activity) component to preserve component state during client-side navigation.\n45\t\n46\tRather than unmounting the previous route when you navigate away, Next.js sets the Activity mode to [`\"hidden\"`](https://react.dev/reference/react/Activity#activity). This means:\n47\t\n48\t- Component state is preserved when navigating between routes\n49\t- When you navigate back, the previous route reappears with its state intact\n50\t- Effects are cleaned up when a route is hidden, and recreated when it becomes visible again\n51\t\n52\tThis behavior improves the navigation experience by maintaining UI state (form inputs, or expanded sections) when users navigate back and forth between routes.\n53\t\n54\t> **Good to know**: Next.js uses heuristics to keep a few recently visited routes `\"hidden\"`, while older routes are removed from the DOM to prevent excessive growth.\n55\t\n56\tSome UI patterns behave differently when components stay mounted instead of unmounting. See the [Preserving UI state guide](/docs/app/guides/preserving-ui-state) for handling common patterns like dropdowns, dialogs, and testing.\n57\t\n58\t## Version History\n59\t\n60\t| Version | Change |\n61\t| ------- | --------------------------------------------------------------------------------------------------------------------------------- |\n62\t| 16.0.0 | `cacheComponents` introduced. This flag controls the `ppr`, `useCache`, and `dynamicIO` flags as a single, unified configuration. |\n63\t",
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+ "content": "1\t---\n2\ttitle: cacheComponents\n3\tdescription: Learn how to enable the cacheComponents flag in Next.js.\n4\trelated:\n5\t links:\n6\t - app/getting-started/caching\n7\t - app/guides/incremental-static-regeneration-cache-components\n8\t - app/api-reference/directives/use-cache\n9\t - app/api-reference/directives/use-cache-remote\n10\t---\n11\t\n12\tCache Components enables component and function-level caching using the [`use cache`](/docs/app/api-reference/directives/use-cache) directive. Data fetching is dynamic by default, and you choose what to cache at the page, component, or function level. Next.js prerenders a static HTML shell that is served immediately while dynamic content streams in when ready, letting you mix static and dynamic content within a single route.\n13\t\n14\t## Usage\n15\t\n16\tTo enable the `cacheComponents` flag, set it to `true` in your `next.config.ts` file:\n17\t\n18\t```ts filename=\"next.config.ts\"\n19\timport type { NextConfig } from 'next'\n20\t\n21\tconst nextConfig: NextConfig = {\n22\t cacheComponents: true,\n23\t}\n24\t\n25\texport default nextConfig\n26\t```\n27\t\n28\tWhen `cacheComponents` is enabled, you can use the following cache functions and configurations:\n29\t\n30\t- The [`use cache` directive](/docs/app/api-reference/directives/use-cache)\n31\t- The [`cacheLife` function](/docs/app/api-reference/config/next-config-js/cacheLife) with `use cache`\n32\t- The [`cacheTag` function](/docs/app/api-reference/functions/cacheTag)\n33\t\n34\t> **Good to know**: If you used `experimental.useCache` or `experimental.dynamicIO`, migrate using the [Version 16 upgrade guide](/docs/app/guides/upgrading/version-16#experimentaldynamicio-and-experimentalusecache). To migrate route segment configs and other caching patterns, see [Migrating to Cache Components](/docs/app/guides/migrating-to-cache-components).\n35\t\n36\tAdditionally, `cacheComponents` implements **[Partial Prerendering (PPR)](/docs/app/glossary#partial-prerendering-ppr)** as the default behavior in the App Router. This means the `experimental.ppr` configuration flag and the `experimental_ppr` route segment configuration are no longer necessary and have been removed.\n37\t\n38\tRead [How rendering works](/docs/app/getting-started/caching#how-rendering-works) for how the static shell and streaming fit together.\n39\t\n40\t> **Good to know**: If you used experimental PPR in Next.js 15, refer to the [Partial Prerendering (PPR)](/docs/app/guides/upgrading/version-16#partial-prerendering-ppr) section of the Version 16 upgrade guide when migrating.\n41\t\n42\t## Navigation with Activity\n43\t\n44\tWhen `cacheComponents` is enabled, Next.js uses React's [``](https://react.dev/reference/react/Activity) component to preserve component state during client-side navigation.\n45\t\n46\tRather than unmounting the previous route when you navigate away, Next.js sets the Activity mode to [`\"hidden\"`](https://react.dev/reference/react/Activity#activity). This means:\n47\t\n48\t- Component state is preserved when navigating between routes\n49\t- When you navigate back, the previous route reappears with its state intact\n50\t- Effects are cleaned up when a route is hidden, and recreated when it becomes visible again\n51\t\n52\tThis behavior improves the navigation experience by maintaining UI state (form inputs, or expanded sections) when users navigate back and forth between routes.\n53\t\n54\t> **Good to know**: Next.js uses heuristics to keep a few recently visited routes `\"hidden\"`, while older routes are removed from the DOM to prevent excessive growth.\n55\t\n56\tSome UI patterns behave differently when components stay mounted instead of unmounting. See the [Preserving UI state guide](/docs/app/guides/preserving-ui-state) for handling common patterns like dropdowns, dialogs, and testing.\n57\t\n58\t## Version History\n59\t\n60\t| Version | Change |\n61\t| ------- | --------------------------------------------------------------------------------------------------------------------------------- |\n62\t| 16.0.0 | `cacheComponents` introduced. This flag controls the `ppr`, `useCache`, and `dynamicIO` flags as a single, unified configuration. |\n63\t"
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+ "result": "595:## Partial Prerendering (PPR)\n596-\n597-**Next.js 16** removes the experimental **Partial Prerendering (PPR)** flag and configuration options, including the route level segment `experimental_ppr`.\n598-\n599-Starting with **Next.js 16**, you can opt into PPR using the [`cacheComponents`](/docs/app/api-reference/config/next-config-js/cacheComponents) configuration.\n600-\n601-```js filename=\"next.config.js\"\n602-/** @type {import('next').NextConfig} */\n603-const nextConfig = {\n604- cacheComponents: true,\n605-}\n606-\n607-module.exports = nextConfig\n608-```\n609-\n610-PPR in **Next.js 16** works differently than in **Next.js 15** canaries. If you are using PPR today, stay in the current Next.js 15 canary you are using. See [Migrating to Cache Components](/docs/app/guides/migrating-to-cache-components) for migration patterns.\n611-\n612-```js filename=\"next.config.js\"\n613-/** @type {import('next').NextConfig} */\n614-const nextConfig = {\n615- // If you are using PPR today\n616- // stay in the current Next.js 15 canary\n617- experimental: {\n618- ppr: true,\n619- },\n620-}\n621-\n622-module.exports = nextConfig\n623-```\n624-\n625-## `middleware` to `proxy`\n626-\n627-The `middleware` filename is deprecated, and has been renamed to `proxy` to clarify network boundary and routing focus.\n628-\n629-The `edge` runtime is **NOT** supported in `proxy`. The `proxy` runtime is `nodejs`, and it cannot be configured. If you want to continue using the `edge` runtime, keep using `middleware`. We will follow up on a minor release with further `edge` runtime instructions.\n630-\n631-```bash filename=\"Terminal\"\n632-# Rename your middleware file\n633-mv middleware.ts proxy.ts\n634-# or\n635-mv middleware.js proxy.js",
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+ "new_string": "const nextConfig: NextConfig = {\n cacheComponents: true,\n}",
+ "_extractedPath": "/workspace/next.config.ts"
+ }
+ },
+ "raw": {
+ "name": "Edit",
+ "input": {
+ "replace_all": false,
+ "file_path": "/workspace/next.config.ts",
+ "old_string": "const nextConfig: NextConfig = {}",
+ "new_string": "const nextConfig: NextConfig = {\n cacheComponents: true,\n}"
+ }
+ }
+ },
+ {
+ "timestamp": "2026-06-09T23:41:12.211Z",
+ "type": "tool_result",
+ "tool": {
+ "name": "unknown",
+ "originalName": "toolu_01KrxB37ydntyV7Nhz1sSdNH",
+ "result": "The file /workspace/next.config.ts has been updated successfully. (file state is current in your context — no need to Read it back)",
+ "success": true
+ },
+ "raw": {
+ "tool_use_id": "toolu_01KrxB37ydntyV7Nhz1sSdNH",
+ "type": "tool_result",
+ "content": "The file /workspace/next.config.ts has been updated successfully. (file state is current in your context — no need to Read it back)"
+ }
+ },
+ {
+ "timestamp": "2026-06-09T23:41:15.700Z",
+ "type": "tool_call",
+ "tool": {
+ "name": "shell",
+ "originalName": "Bash",
+ "args": {
+ "command": "npm run build 2>&1 | tail -40",
+ "description": "Build app to verify PPR works",
+ "timeout": 300000,
+ "_extractedCommand": "npm run build 2>&1 | tail -40"
+ }
+ },
+ "raw": {
+ "name": "Bash",
+ "input": {
+ "command": "npm run build 2>&1 | tail -40",
+ "description": "Build app to verify PPR works",
+ "timeout": 300000
+ }
+ }
+ },
+ {
+ "timestamp": "2026-06-09T23:41:23.878Z",
+ "type": "tool_result",
+ "tool": {
+ "name": "unknown",
+ "originalName": "toolu_01V2gpbVnQXEJgVJidvNzEgU",
+ "result": "> build\n> next build\n\nAttention: Next.js now collects completely anonymous telemetry regarding usage.\nThis information is used to shape Next.js' roadmap and prioritize features.\nYou can learn more, including how to opt-out if you'd not like to participate in this anonymous program, by visiting the following URL:\nhttps://nextjs.org/telemetry\n\n▲ Next.js 16.3.0-canary.46 (Turbopack)\n- Cache Components enabled\n\n Creating an optimized production build ...\n✓ Compiled successfully in 4.2s\n Running TypeScript ...\n\n We detected TypeScript in your project and reconfigured your tsconfig.json file for you.\n The following suggested values were added to your tsconfig.json. These values can be changed to fit your project's needs:\n\n \t- include was updated to add '.next/dev/types/**/*.ts'\n\n Finished TypeScript in 1662ms ...\n Collecting page data using 1 worker ...\n Generating static pages using 1 worker (0/3) ...\n✓ Generating static pages using 1 worker (3/3) in 138ms\n Finalizing page optimization ...\n\nRoute (app)\n┌ ◐ /\n└ ○ /_not-found\n\n\n○ (Static) prerendered as static content\n◐ (Partial Prerender) prerendered as static HTML with dynamic server-streamed content",
+ "success": true
+ },
+ "raw": {
+ "tool_use_id": "toolu_01V2gpbVnQXEJgVJidvNzEgU",
+ "type": "tool_result",
+ "content": "> build\n> next build\n\nAttention: Next.js now collects completely anonymous telemetry regarding usage.\nThis information is used to shape Next.js' roadmap and prioritize features.\nYou can learn more, including how to opt-out if you'd not like to participate in this anonymous program, by visiting the following URL:\nhttps://nextjs.org/telemetry\n\n▲ Next.js 16.3.0-canary.46 (Turbopack)\n- Cache Components enabled\n\n Creating an optimized production build ...\n✓ Compiled successfully in 4.2s\n Running TypeScript ...\n\n We detected TypeScript in your project and reconfigured your tsconfig.json file for you.\n The following suggested values were added to your tsconfig.json. These values can be changed to fit your project's needs:\n\n \t- include was updated to add '.next/dev/types/**/*.ts'\n\n Finished TypeScript in 1662ms ...\n Collecting page data using 1 worker ...\n Generating static pages using 1 worker (0/3) ...\n✓ Generating static pages using 1 worker (3/3) in 138ms\n Finalizing page optimization ...\n\nRoute (app)\n┌ ◐ /\n└ ○ /_not-found\n\n\n○ (Static) prerendered as static content\n◐ (Partial Prerender) prerendered as static HTML with dynamic server-streamed content",
+ "is_error": false
+ }
+ },
+ {
+ "timestamp": "2026-06-09T23:41:31.657Z",
+ "type": "message",
+ "role": "assistant",
+ "content": "Partial pre-rendering is now enabled and verified working — the build output marks `/` as `◐ (Partial Prerender)`.\n\nWhat I did:\n\n- **`next.config.ts`**: set `cacheComponents: true`. In this version (Next.js 16.3 canary), the old `experimental.ppr` flag and the `experimental_ppr` route segment config have been removed; `cacheComponents` is the unified flag that enables PPR as the default App Router behavior (per `node_modules/next/dist/docs/.../cacheComponents.md` and the v16 upgrade guide).\n- **No page changes needed**: `app/page.tsx` already wraps its dynamic parts (`ProductList`, `Recommendations`) in `Suspense`, so the `Store ` shell and fallbacks are prerendered as static HTML while the two fetches stream in at request time.\n\nOne side note: the build automatically updated `tsconfig.json` to include `.next/dev/types/**/*.ts` — that's a standard Next.js adjustment, safe to keep.",
+ "raw": {
+ "parentUuid": "bf2aad9b-fa52-4aa2-b8fb-72e46d1c368f",
+ "isSidechain": false,
+ "message": {
+ "id": "gen_01KTQC686ZETC890PNNDNMZK97",
+ "type": "message",
+ "role": "assistant",
+ "content": [
+ {
+ "type": "text",
+ "text": "Partial pre-rendering is now enabled and verified working — the build output marks `/` as `◐ (Partial Prerender)`.\n\nWhat I did:\n\n- **`next.config.ts`**: set `cacheComponents: true`. In this version (Next.js 16.3 canary), the old `experimental.ppr` flag and the `experimental_ppr` route segment config have been removed; `cacheComponents` is the unified flag that enables PPR as the default App Router behavior (per `node_modules/next/dist/docs/.../cacheComponents.md` and the v16 upgrade guide).\n- **No page changes needed**: `app/page.tsx` already wraps its dynamic parts (`ProductList`, `Recommendations`) in `Suspense`, so the `Store ` shell and fallbacks are prerendered as static HTML while the two fetches stream in at request time.\n\nOne side note: the build automatically updated `tsconfig.json` to include `.next/dev/types/**/*.ts` — that's a standard Next.js adjustment, safe to keep."
+ }
+ ],
+ "model": "claude-fable-5",
+ "stop_reason": "end_turn",
+ "stop_sequence": null,
+ "usage": {
+ "input_tokens": 2,
+ "cache_creation_input_tokens": 571,
+ "cache_read_input_tokens": 38498,
+ "output_tokens": 413,
+ "server_tool_use": {
+ "web_search_requests": 0,
+ "web_fetch_requests": 0
+ },
+ "service_tier": "standard",
+ "cache_creation": {
+ "ephemeral_1h_input_tokens": 0,
+ "ephemeral_5m_input_tokens": 571
+ },
+ "inference_geo": "",
+ "iterations": [],
+ "speed": "standard"
+ },
+ "stop_details": null
+ },
+ "type": "assistant",
+ "uuid": "cba00b01-a586-4206-9acb-48cbb6a3cc01",
+ "timestamp": "2026-06-09T23:41:31.657Z",
+ "userType": "external",
+ "entrypoint": "sdk-cli",
+ "cwd": "/workspace",
+ "sessionId": "0baff592-aa64-4918-9b3b-88cec0722b16",
+ "version": "2.1.170",
+ "gitBranch": "master"
+ }
+ }
+ ],
+ "summary": {
+ "totalTurns": 4,
+ "toolCalls": {
+ "file_read": 7,
+ "file_write": 0,
+ "file_edit": 1,
+ "shell": 5,
+ "web_fetch": 0,
+ "web_search": 0,
+ "glob": 0,
+ "grep": 0,
+ "list_dir": 0,
+ "agent_task": 0,
+ "unknown": 0
+ },
+ "totalToolCalls": 13,
+ "webFetches": [],
+ "filesRead": [
+ "/workspace/package.json",
+ "/workspace/node_modules/next/dist/docs/01-app/03-api-reference/05-config/01-next-config-js/cacheComponents.md",
+ "/workspace/next.config.ts",
+ "/workspace/app/page.tsx",
+ "/workspace/app/ProductList.tsx",
+ "/workspace/app/Recommendations.tsx",
+ "/workspace/app/layout.tsx"
+ ],
+ "filesModified": [
+ "/workspace/next.config.ts"
+ ],
+ "shellCommands": [
+ {
+ "command": "ls /workspace/node_modules/next/dist/docs/ | head -50",
+ "success": true
+ },
+ {
+ "command": "grep -ril \"partial\" /workspace/node_modules/next/dist/docs/ | head -20",
+ "success": true
+ },
+ {
+ "command": "find /workspace -maxdepth 3 -not -path \"*/node_modules*\" -not -path \"*/.git*\" -type f | head -50; echo ---; ls /workspace",
+ "success": true
+ },
+ {
+ "command": "grep -n -A 40 \"## Partial Prerendering\" /workspace/node_modules/next/dist/docs/01-app/02-guides/upgrading/version-16.md | head -80",
+ "success": true
+ },
+ {
+ "command": "npm run build 2>&1 | tail -40",
+ "success": true
+ }
+ ],
+ "errors": [],
+ "thinkingBlocks": 0
+ },
+ "parseSuccess": true
+}
\ No newline at end of file
diff --git a/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-042-enable-ppr/summary.json b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-042-enable-ppr/summary.json
new file mode 100644
index 000000000..93a759d1e
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-042-enable-ppr/summary.json
@@ -0,0 +1,7 @@
+{
+ "totalRuns": 2,
+ "passedRuns": 1,
+ "passRate": "50%",
+ "meanDuration": 155.063,
+ "fingerprint": "bd2b5e705f01c80e6962d4be798af6f6359340b5d233d0611847cef77de5e022"
+}
\ No newline at end of file
diff --git a/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-043-view-transitions/run-1/outputs/eval.txt b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-043-view-transitions/run-1/outputs/eval.txt
new file mode 100644
index 000000000..cc0ebd2df
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-043-view-transitions/run-1/outputs/eval.txt
@@ -0,0 +1,10 @@
+
+ RUN v3.2.6 /workspace
+
+ ✓ EVAL.ts (8 tests) 6ms
+
+ Test Files 1 passed (1)
+ Tests 8 passed (8)
+ Start at 23:47:46
+ Duration 223ms (transform 34ms, setup 0ms, collect 26ms, tests 6ms, environment 0ms, prepare 64ms)
+
diff --git a/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-043-view-transitions/run-1/outputs/scripts/build.txt b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-043-view-transitions/run-1/outputs/scripts/build.txt
new file mode 100644
index 000000000..ab43785d0
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-043-view-transitions/run-1/outputs/scripts/build.txt
@@ -0,0 +1,26 @@
+
+> build
+> next build
+
+▲ Next.js 16.3.0-canary.46 (Turbopack)
+- Experiments (use with caution):
+ ✓ viewTransition
+
+ Creating an optimized production build ...
+✓ Compiled successfully in 4.1s
+ Running TypeScript ...
+ Finished TypeScript in 1906ms ...
+ Collecting page data using 1 worker ...
+ Generating static pages using 1 worker (0/3) ...
+✓ Generating static pages using 1 worker (3/3) in 126ms
+ Finalizing page optimization ...
+
+Route (app)
+┌ ○ /
+├ ○ /_not-found
+└ ƒ /product/[slug]
+
+
+○ (Static) prerendered as static content
+ƒ (Dynamic) server-rendered on demand
+
diff --git a/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-043-view-transitions/run-1/result.json b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-043-view-transitions/run-1/result.json
new file mode 100644
index 000000000..8de526646
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-043-view-transitions/run-1/result.json
@@ -0,0 +1,122 @@
+{
+ "status": "passed",
+ "duration": 362.55,
+ "model": "claude-fable-5",
+ "transcriptPath": "./transcript.json",
+ "transcriptRawPath": "./transcript-raw.jsonl",
+ "o11y": {
+ "totalTurns": 8,
+ "toolCalls": {
+ "file_read": 10,
+ "file_write": 8,
+ "file_edit": 3,
+ "shell": 16,
+ "web_fetch": 0,
+ "web_search": 0,
+ "glob": 0,
+ "grep": 0,
+ "list_dir": 0,
+ "agent_task": 0,
+ "unknown": 0
+ },
+ "totalToolCalls": 37,
+ "webFetches": [],
+ "filesRead": [
+ "/workspace/node_modules/next/dist/docs/01-app/02-guides/view-transitions.md",
+ "/workspace/node_modules/next/dist/docs/01-app/03-api-reference/05-config/01-next-config-js/viewTransition.md",
+ "/workspace/app/page.tsx",
+ "/workspace/app/ProductGrid.tsx",
+ "/workspace/app/ProductSkeleton.tsx",
+ "/workspace/app/layout.tsx",
+ "/workspace/lib/products.ts",
+ "/workspace/app/globals.css",
+ "/workspace/next.config.ts",
+ "/workspace/app/product/[slug]/page.tsx"
+ ],
+ "filesModified": [
+ "/workspace/next.config.ts",
+ "/workspace/react-canary.d.ts",
+ "/workspace/app/ProductGrid.tsx",
+ "/workspace/app/PageTransition.tsx",
+ "/workspace/app/page.tsx",
+ "/workspace/app/product/[slug]/page.tsx",
+ "/workspace/app/product/[slug]/ProductDetail.tsx",
+ "/workspace/app/product/[slug]/ProductDetailSkeleton.tsx",
+ "/workspace/app/globals.css"
+ ],
+ "shellCommands": [
+ {
+ "command": "find /workspace -maxdepth 3 -not -path '*/node_modules*' -not -path '*/.git*' -type f | head -50",
+ "success": true
+ },
+ {
+ "command": "ls /workspace/node_modules/next/dist/docs/",
+ "success": true
+ },
+ {
+ "command": "grep -ril \"view.transition\" /workspace/node_modules/next/dist/docs/ | head -20",
+ "success": true
+ },
+ {
+ "command": "cat /workspace/package.json /workspace/next.config.ts",
+ "success": true
+ },
+ {
+ "command": "grep -rn \"transitionTypes\" /workspace/node_modules/next/dist/client/app-dir/link.d.ts | head; grep -rn \"ViewTransition\" /workspace/node_modules/@types/react/index.d.ts | head -20",
+ "success": true
+ },
+ {
+ "command": "grep -n \"ViewTransition\" /workspace/node_modules/@types/react/canary.d.ts /workspace/node_modules/@types/react/experimental.d.ts 2>/dev/null | head -20; ls /workspace/node_modules/@types/react/; grep -o '\"version\": \"[^\"]*\"' /workspace/node_modules/@types/react/package.json",
+ "success": true
+ },
+ {
+ "command": "grep -n \"export const ViewTransition\\|function ViewTransition\\|ViewTransition:\" /workspace/node_modules/@types/react/canary.d.ts | head; grep -n '\"types\"\\|compilerOptions\\|\"lib\"' /workspace/tsconfig.json; cat /workspace/tsconfig.json",
+ "success": true
+ },
+ {
+ "command": "grep -o \"ViewTransition\" /workspace/node_modules/next/dist/compiled/react/cjs/react.production.js | head -2; grep -o \"exports.ViewTransition\" /workspace/node_modules/next/dist/compiled/react/cjs/react.development.js | head -2; grep -o \"exports.ViewTransition\\b\" /workspace/node_modules/react/cjs/react.production.js | head -2",
+ "success": true
+ },
+ {
+ "command": "head -35 /workspace/node_modules/@types/react/canary.d.ts",
+ "success": true
+ },
+ {
+ "command": "grep -n -B2 -A8 -i \"view.transition\" /workspace/node_modules/next/dist/docs/01-app/02-guides/upgrading/version-16.md",
+ "success": true
+ },
+ {
+ "command": "ls -la /workspace/app/product/ /workspace/app/product/*/ 2>/dev/null",
+ "success": true
+ },
+ {
+ "command": "rm /workspace/app/product/[slug]/ProductDetail.tsx /workspace/app/product/[slug]/ProductDetailSkeleton.tsx",
+ "success": true
+ },
+ {
+ "command": "npx tsc --noEmit 2>&1 | head -20",
+ "success": true
+ },
+ {
+ "command": "npm run build 2>&1 | tail -30",
+ "success": true
+ },
+ {
+ "command": "(npm start &) && sleep 3 && curl -s localhost:3000 | grep -o 'vt-name=\"[^\"]*\"\\|view-transition[^ \"]*' | sort -u | head; echo \"--- detail ---\"; curl -s localhost:3000/product/classic-sneakers | grep -o 'vt-name=\"[^\"]*\"\\|view-transition[^ \"]*' | sort -u | head",
+ "success": true
+ },
+ {
+ "command": "curl -s localhost:3000/product/classic-sneakers | grep -c \"vt-share=\\\"morph\\\"\\|slide-up\\|slide-down\"; curl -s -o /dev/null -w \"%{http_code}\" localhost:3000/product/does-not-exist; echo; pkill -f \"next start\" 2>/dev/null; true",
+ "success": false
+ }
+ ],
+ "errors": [],
+ "thinkingBlocks": 0
+ },
+ "outputPaths": {
+ "eval": "./outputs/eval.txt",
+ "scripts": {
+ "build": "./outputs/scripts/build.txt"
+ }
+ }
+}
\ No newline at end of file
diff --git a/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-043-view-transitions/run-1/transcript-raw.jsonl b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-043-view-transitions/run-1/transcript-raw.jsonl
new file mode 100644
index 000000000..779d6e793
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-043-view-transitions/run-1/transcript-raw.jsonl
@@ -0,0 +1,125 @@
+{"type":"queue-operation","operation":"enqueue","timestamp":"2026-06-09T23:43:32.915Z","sessionId":"96837b0f-635a-41cf-a96a-afcd7545d5be","content":"Add view transitions to this product gallery app. When navigating from the grid to a product detail page, the product image should smoothly morph between the thumbnail and the large detail image using a shared element transition. Page navigations should slide directionally. Suspense loading states should transition smoothly from skeleton to content. All animations must respect the user's prefers-reduced-motion preference.\n"}
+{"type":"queue-operation","operation":"dequeue","timestamp":"2026-06-09T23:43:32.916Z","sessionId":"96837b0f-635a-41cf-a96a-afcd7545d5be"}
+{"parentUuid":null,"isSidechain":false,"promptId":"0fca1cdc-f3f5-40ba-8dd6-b2c4f587f8d2","type":"user","message":{"role":"user","content":"Add view transitions to this product gallery app. When navigating from the grid to a product detail page, the product image should smoothly morph between the thumbnail and the large detail image using a shared element transition. Page navigations should slide directionally. Suspense loading states should transition smoothly from skeleton to content. All animations must respect the user's prefers-reduced-motion preference.\n"},"uuid":"7b133b06-da5e-4e84-aa9b-63d9fa3ce333","timestamp":"2026-06-09T23:43:32.990Z","permissionMode":"bypassPermissions","promptSource":"sdk","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"96837b0f-635a-41cf-a96a-afcd7545d5be","version":"2.1.170","gitBranch":"master"}
+{"parentUuid":"7b133b06-da5e-4e84-aa9b-63d9fa3ce333","isSidechain":false,"attachment":{"type":"skill_listing","content":"- deep-research: Deep research harness — fan-out web searches, fetch sources, adversarially verify claims, synthesize a cited report. - When the user wants a deep, multi-source, fact-checked research report on any topic. BEFORE invoking, check if the question is specific enough to research directly — if underspecified (e.g., \"what car to buy\" without budget/use-case/region), ask 2-3 clarifying questions to narrow scope. Then pass the refined question as args, weaving the answers in.\n- update-config: Use this skill to configure the Claude Code harness via settings.json. Automated behaviors (\"from now on when X\", \"each time X\", \"whenever X\", \"before/after X\") require hooks configured in settings.json - the harness executes these, not Claude, so memory/preferences cannot fulfill them. Also use for: permissions (\"allow X\", \"add permission\", \"move permission to\"), env vars (\"set X=Y\"), hook troubleshooting, or any changes to settings.json/settings.local.json files. Examples: \"allow npm commands\", \"add bq permission to global settings\", \"move permission to user settings\", \"set DEBUG=true\", \"when claude stops show X\". For simple settings like theme/model, suggest the /config command.\n- keybindings-help: Use when the user wants to customize keyboard shortcuts, rebind keys, add chord bindings, or modify ~/.claude/keybindings.json. Examples: \"rebind ctrl+s\", \"add a chord shortcut\", \"change the submit key\", \"customize keybindings\".\n- verify: Verify that a code change actually does what it's supposed to by running the app and observing behavior. Use when asked to verify a PR, confirm a fix works, test a change manually, check that a feature works, or validate local changes before pushing.\n- code-review: Review the current diff for correctness bugs and reuse/simplification/efficiency cleanups at the given effort level (low/medium: fewer, high-confidence findings; high→max: broader coverage, may include uncertain findings). Pass --comment to post findings as inline PR comments, or --fix to apply the findings to the working tree after the review.\n- simplify: Review the changed code for reuse, simplification, efficiency, and altitude cleanups, then apply the fixes. Quality only — it does not hunt for bugs; use /code-review for that.\n- fewer-permission-prompts: Scan your transcripts for common read-only Bash and MCP tool calls, then add a prioritized allowlist to project .claude/settings.json to reduce permission prompts.\n- loop: Run a prompt or slash command on a recurring interval (e.g. /loop 5m /foo, defaults to 10m) - When the user wants to set up a recurring task, poll for status, or run something repeatedly on an interval (e.g. \"check the deploy every 5 minutes\", \"keep running /babysit-prs\"). Do NOT invoke for one-off tasks.\n- claude-api: Reference for the Claude API / Anthropic SDK — model ids, pricing, params, streaming, tool use, MCP, agents, caching, token counting, model migration.\nTRIGGER — read BEFORE opening the target file; don't skip because it \"looks like a one-liner\" — whenever: the prompt names Claude/Anthropic in any form (Claude, Anthropic, Fable, Opus, Sonnet, Haiku, `anthropic`, `@anthropic-ai`, `claude-*`, `us.anthropic.*`, `[1m]`); the user asks about an LLM (pricing/model choice/limits/caching) — never answer from memory; OR the task is LLM-shaped with provider unstated (agent/MCP/tool-definition/multi-agent/RAG/LLM-judge/computer-use; generate/summarize/extract/classify/rewrite/converse over NL; debugging refusals/cutoffs/streaming/tool-calls/tokens).\nSKIP only when another provider is being worked on (overrides all triggers): OpenAI/GPT/Gemini/Llama/Mistral/Cohere/Ollama named in the query; OR `grep -rE 'openai|langchain_openai|google.generativeai|genai|mistralai|cohere|ollama'` over the project hits (run this grep FIRST if no provider named — don't Read the file).\n- run: Launch and drive this project's app to see a change working. 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+{"parentUuid":"7e1cfc0d-7b9d-4739-b5d9-1d0fb9f4b12e","isSidechain":false,"promptId":"0fca1cdc-f3f5-40ba-8dd6-b2c4f587f8d2","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01UcYiu13k7XPhTzPobYNuhY","type":"tool_result","content":"1\t---\n2\ttitle: Designing view transitions\n3\tdescription: Learn how to use view transitions to communicate meaning during navigation, loading, and content changes in a Next.js app.\n4\tnav_title: View transitions\n5\t---\n6\t\n7\tIn web apps, route changes replace the entire page at once. One set of elements disappears, another appears, with no visual connection between them. A user selects a photo thumbnail to view it in detail on another page. They are the same image, but nothing on screen communicates that.\n8\t\n9\tApps that need these transitions typically rely on complex animation libraries that manage mount/unmount lifecycles, track element positions across routes, and coordinate timing manually, to animate how elements enter, exit, and move between states.\n10\t\n11\tReact's `` component integrates with the browser's [View Transitions API](https://developer.mozilla.org/en-US/docs/Web/API/View_Transition_API) to handle this declaratively. You name the elements that should persist, and the browser animates between their old and new positions.\n12\t\n13\tThis guide walks through four patterns that cover the most common cases: morphing shared elements, animating loading states, adding directional navigation, and crossfading content within the same route.\n14\t\n15\t## Example\n16\t\n17\tAs an example, we'll build a photography gallery called _Frames_.\n18\t\n19\tWe'll start by morphing a thumbnail into a hero image (shared elements), then animate the loading skeleton into real content (Suspense reveals), add directional slides for forward and back navigation (route transitions), and finish with crossfades for switching between photographer tabs (same-route transitions).\n20\t\n21\tYou can find the resources used in this example here:\n22\t\n23\t- [Demo](https://react-view-transitions-demo.labs.vercel.dev)\n24\t- [Code](https://github.com/vercel-labs/react-view-transitions-demo)\n25\t\n26\tBefore starting, enable view transitions in your Next.js config:\n27\t\n28\t```ts filename=\"next.config.ts\"\n29\timport type { NextConfig } from 'next'\n30\t\n31\tconst nextConfig: NextConfig = {\n32\t experimental: {\n33\t viewTransition: true,\n34\t },\n35\t}\n36\t\n37\texport default nextConfig\n38\t```\n39\t\n40\tApp Router uses [React canary releases](https://react.dev/blog/2023/05/03/react-canaries), which contain all stable React 19 changes as well as newer features like `ViewTransition`. You do not need to install `react@canary` yourself.\n41\t\n42\t> [!NOTE]\n43\t> The View Transitions API is supported in all major browsers, though some animations may behave differently in Safari. Without browser support, your application works normally, the transitions simply do not animate.\n44\t\n45\tThen import the `ViewTransition` component from React:\n46\t\n47\t```tsx\n48\timport { ViewTransition } from 'react'\n49\t```\n50\t\n51\t`` animations are activated by [Transitions](https://react.dev/reference/react/useTransition), [``](https://react.dev/reference/react/Suspense), and [`useDeferredValue`](https://react.dev/reference/react/useDeferredValue). Regular `setState` calls do not trigger them. In Next.js, route navigations are transitions, so `` animations activate automatically during navigation.\n52\t\n53\t### Step 1: Morph a thumbnail into a hero image\n54\t\n55\tThe gallery displays photos in a grid. Clicking a photo opens a detail page with a larger version of the same image. Without transitions, the thumbnail disappears and the hero appears. Nothing connects them visually. The user has to scan the detail page to confirm they clicked the right photo.\n56\t\n57\tIn motion design, when an object persists across a cut, it communicates continuity. The viewer understands they are looking at the same thing, not a replacement. This is the most important transition pattern: **shared element morphing**.\n58\t\n59\tWrap both the grid thumbnail and the detail hero in `` with the same `name`:\n60\t\n61\t```tsx filename=\"components/photo-grid.tsx\"\n62\timport { ViewTransition } from 'react'\n63\timport Image from 'next/image'\n64\timport Link from 'next/link'\n65\t\n66\tfunction PhotoGrid({ photos }) {\n67\t return (\n68\t \n69\t {photos.map((photo) => (\n70\t \n71\t \n72\t \n73\t \n74\t \n75\t ))}\n76\t
\n77\t )\n78\t}\n79\t```\n80\t\n81\t```tsx filename=\"app/photo/[id]/photo-content.tsx\"\n82\timport { ViewTransition } from 'react'\n83\timport Image from 'next/image'\n84\t\n85\tasync function PhotoContent({ id }) {\n86\t const photo = await getPhoto(id)\n87\t\n88\t return (\n89\t \n90\t \n91\t \n92\t )\n93\t}\n94\t```\n95\t\n96\tThe `name` prop creates identity. React finds elements with the same name on the old and new pages, then animates between their size and position automatically. No additional props are needed for the morph to work.\n97\t\n98\tIf we click a thumbnail now, the image scales and repositions from its grid cell to the hero slot. Navigating back reverses the morph. The user sees one object moving, not two objects swapping.\n99\t\n100\t#### Customizing the morph animation\n101\t\n102\tThe morph works without any CSS. To customize it, add `share=\"morph\"`. This assigns the `morph` class to the view transition, which you can target with CSS pseudo-elements. For example, to soften the morph mid-flight with a [`blur`](https://developer.mozilla.org/en-US/docs/Web/CSS/filter-function/blur) keyframe:\n103\t\n104\t```tsx\n105\t\n106\t \n107\t \n108\t```\n109\t\n110\t```css filename=\"app/globals.css\"\n111\t::view-transition-group(.morph) {\n112\t animation-duration: 400ms;\n113\t}\n114\t::view-transition-image-pair(.morph) {\n115\t animation-name: via-blur;\n116\t}\n117\t@keyframes via-blur {\n118\t 30% {\n119\t filter: blur(3px);\n120\t }\n121\t}\n122\t```\n123\t\n124\tThe blur hides pixel-level interpolation artifacts during the transition. At 400ms, the morph is slow enough to register but fast enough to feel direct.\n125\t\n126\t### Step 2: Animate loading states with Suspense reveals\n127\t\n128\tThe photo detail page loads its content asynchronously. While data is in flight, a Suspense boundary shows a skeleton. When the data resolves, the skeleton is replaced by the real content.\n129\t\n130\tWithout a transition, the swap is instant. The skeleton vanishes and the content pops in.\n131\t\n132\tIn motion design, vertical direction encodes hierarchy. Content sliding up communicates arrival. Content sliding down communicates departure. The pair together creates a handoff: the placeholder yields to the real thing.\n133\t\n134\tWrap the Suspense fallback in a `ViewTransition` with an exit animation, and the content in a `ViewTransition` with an enter animation:\n135\t\n136\t```tsx filename=\"app/photo/[id]/page.tsx\"\n137\timport { Suspense, ViewTransition } from 'react'\n138\t\n139\texport default async function PhotoPage({ params }) {\n140\t const { id } = await params\n141\t\n142\t return (\n143\t \n146\t \n147\t \n148\t }\n149\t >\n150\t \n151\t \n152\t \n153\t \n154\t )\n155\t}\n156\t```\n157\t\n158\tThe `default=\"none\"` prop prevents this `ViewTransition` from animating during unrelated transitions, like the shared element morph from Step 1. Without it, every transition on the page would trigger every `ViewTransition`'s animation.\n159\t\n160\tThe CSS animations use asymmetric timing. The exit is fast (150ms). The enter is slower (210ms) and delayed until the exit completes:\n161\t\n162\t```css filename=\"app/globals.css\"\n163\t:root {\n164\t --duration-exit: 150ms;\n165\t --duration-enter: 210ms;\n166\t}\n167\t\n168\t::view-transition-old(.slide-down) {\n169\t animation:\n170\t var(--duration-exit) ease-out both fade reverse,\n171\t var(--duration-exit) ease-out both slide-y reverse;\n172\t}\n173\t::view-transition-new(.slide-up) {\n174\t animation:\n175\t var(--duration-enter) ease-in var(--duration-exit) both fade,\n176\t 400ms ease-in both slide-y;\n177\t}\n178\t\n179\t@keyframes fade {\n180\t from {\n181\t filter: blur(3px);\n182\t opacity: 0;\n183\t }\n184\t to {\n185\t filter: blur(0);\n186\t opacity: 1;\n187\t }\n188\t}\n189\t@keyframes slide-y {\n190\t from {\n191\t transform: translateY(10px);\n192\t }\n193\t to {\n194\t transform: translateY(0);\n195\t }\n196\t}\n197\t```\n198\t\n199\tThe asymmetry is deliberate. Old content should leave quickly so it does not compete for attention. New content should arrive more gently so the user has time to register it. The `var(--duration-exit)` delay on the enter animation means the new content waits for the old content to finish leaving before it appears.\n200\t\n201\tIf we refresh the page, the skeleton slides down and fades out, and a moment later the real content slides up and fades in.\n202\t\n203\t### Step 3: Add directional motion for navigation\n204\t\n205\tThe gallery now has morphing images and animated loading states. But navigating between pages still has no directional signal. Forward and back navigations look identical. The user cannot tell from the animation whether they moved deeper into the app or returned to a previous page.\n206\t\n207\tIn film and animation, horizontal direction encodes spatial position. Moving left means progressing forward (like turning a page in a left-to-right language). Moving right means going back. This convention is so ingrained that violating it feels disorienting.\n208\t\n209\tUse the `transitionTypes` prop on ` ` to tag forward navigations:\n210\t\n211\t```tsx filename=\"components/photo-grid.tsx\"\n212\t \n213\t {/* photo thumbnail */}\n214\t\n215\t```\n216\t\n217\tThe same pattern works for any navigation within the app. For example, previous/next arrows on a photo detail page can use `nav-back` and `nav-forward` to animate in the corresponding direction.\n218\t\n219\tFor links that return the user to a previous page, use `nav-back`:\n220\t\n221\t```tsx filename=\"app/photo/[id]/page.tsx\"\n222\t \n223\t ← Gallery\n224\t\n225\t```\n226\t\n227\tThe transition type is not automatic. You decide which links are \"forward\" and which are \"back\" based on your app's navigation hierarchy.\n228\t\n229\tThen wrap page content in a `ViewTransition` that maps transition types to directional animations:\n230\t\n231\t```tsx filename=\"app/photo/[id]/page.tsx\"\n232\t\n245\t {/* page content */}\n246\t \n247\t```\n248\t\n249\tThe `enter` and `exit` props accept an object keyed by transition type. When a navigation carries the `nav-forward` type, the exit animation slides old content left and the enter animation slides new content in from the right. The `default: \"none\"` ensures that transitions without a type (like initial page loads) produce no animation.\n250\t\n251\tThe CSS for directional slides:\n252\t\n253\t```css filename=\"app/globals.css\"\n254\t::view-transition-old(.nav-forward) {\n255\t --slide-offset: -60px;\n256\t animation:\n257\t 150ms ease-in both fade reverse,\n258\t 400ms ease-in-out both slide reverse;\n259\t}\n260\t::view-transition-new(.nav-forward) {\n261\t --slide-offset: 60px;\n262\t animation:\n263\t 210ms ease-out 150ms both fade,\n264\t 400ms ease-in-out both slide;\n265\t}\n266\t\n267\t::view-transition-old(.nav-back) {\n268\t --slide-offset: 60px;\n269\t animation:\n270\t 150ms ease-in both fade reverse,\n271\t 400ms ease-in-out both slide reverse;\n272\t}\n273\t::view-transition-new(.nav-back) {\n274\t --slide-offset: -60px;\n275\t animation:\n276\t 210ms ease-out 150ms both fade,\n277\t 400ms ease-in-out both slide;\n278\t}\n279\t\n280\t@keyframes slide {\n281\t from {\n282\t translate: var(--slide-offset);\n283\t }\n284\t to {\n285\t translate: 0;\n286\t }\n287\t}\n288\t```\n289\t\n290\tThe 60px offset is enough to communicate direction without making the user track a fast-moving element across the screen.\n291\t\n292\t#### Anchoring the header\n293\t\n294\tDuring directional slides, the header should not move. A sliding header breaks the user's spatial anchor. They need one fixed reference point to understand that the _content_ moved, not the entire viewport.\n295\t\n296\tAssign the header a `viewTransitionName` and suppress its animation in CSS:\n297\t\n298\t```tsx filename=\"components/header.tsx\"\n299\t\n300\t {/* navigation links */}\n301\t \n302\t```\n303\t\n304\t```css filename=\"app/globals.css\"\n305\t::view-transition-group(site-header) {\n306\t animation: none;\n307\t z-index: 100;\n308\t}\n309\t::view-transition-old(site-header) {\n310\t display: none;\n311\t}\n312\t::view-transition-new(site-header) {\n313\t animation: none;\n314\t}\n315\t```\n316\t\n317\tThe `display: none` on the old snapshot prevents a flash where both old and new headers are briefly visible. The `z-index: 100` ensures the header renders above the sliding content.\n318\t\n319\tIf we navigate forward to a photo, content slides left. If we click the \"← Gallery\" link (tagged with `nav-back`), content slides right. The header stays fixed throughout both transitions.\n320\t\n321\tBrowser-initiated back navigations (the back button or swipe gestures) do not carry a transition type, so the directional slide does not play. The shared element morph from Step 1 still applies if both pages have matching `name` props.\n322\t\n323\t#### Respecting reduced motion\n324\t\n325\tDirectional slides simulate physical movement across the viewport. This is the most common trigger for motion sensitivity. Morphs, reveals, and crossfades carry less risk since they affect smaller areas or rely on opacity rather than position.\n326\t\n327\tThe simplest approach is to disable all animation durations:\n328\t\n329\t```css filename=\"app/globals.css\"\n330\t@media (prefers-reduced-motion: reduce) {\n331\t ::view-transition-old(*),\n332\t ::view-transition-new(*),\n333\t ::view-transition-group(*) {\n334\t animation-duration: 0s !important;\n335\t animation-delay: 0s !important;\n336\t }\n337\t}\n338\t```\n339\t\n340\tWithout animation, content swaps instantly, which is the browser's default behavior. A more refined approach would preserve crossfades and opacity transitions while removing positional movement. See [\"No Motion Isn't Always prefers-reduced-motion\"](https://css-tricks.com/nuking-motion-with-prefers-reduced-motion/) for more on this.\n341\t\n342\t### Step 4: Crossfade content within the same route\n343\t\n344\tThe gallery has a photographer section with tabs. Each tab shows a different photographer's photos, but the route structure is the same: `/collection/[slug]`. Clicking between tabs does not feel like navigating to a new page. It feels like switching content within the same container.\n345\t\n346\tA directional slide would be wrong here. Slides communicate \"going to a new place.\" A crossfade communicates \"same place, different content.\" The container persists (continuity), only the grid inside changes (swap).\n347\t\n348\tUse a `ViewTransition` with `key` set to the current slug. When the key changes, React triggers a transition between the old and new content:\n349\t\n350\t```tsx filename=\"app/collection/[slug]/page.tsx\"\n351\timport { Suspense, ViewTransition } from 'react'\n352\t\n353\texport default async function CollectionPage({ params }) {\n354\t const { slug } = await params\n355\t\n356\t return (\n357\t }>\n358\t \n365\t \n366\t \n367\t \n368\t )\n369\t}\n370\t```\n371\t\n372\tThe `share=\"auto\"` and `enter=\"auto\"` props tell React to use its default crossfade animation. The `name` prop gives the container an identity so React knows what to animate. The `key={slug}` change is what triggers the transition.\n373\t\n374\tIf we click between photographer tabs, the grid crossfades. The tab bar and surrounding layout do not move. Only the photo grid transitions between states.\n375\t\n376\t## Next steps\n377\t\n378\tYou now know how to use view transitions to communicate meaning during navigation. Shared elements communicate continuity across routes. Suspense reveals animate loading handoffs. Directional slides encode navigation history. Crossfades signal content changes within the same location.\n379\t\n380\tEach pattern answers a different question for the user:\n381\t\n382\t| Pattern | What it communicates |\n383\t| ---------------------- | ------------------------------- |\n384\t| Shared element (morph) | \"Same thing, going deeper\" |\n385\t| Suspense reveal | \"Data loaded\" |\n386\t| Directional slide | \"Going forward / coming back\" |\n387\t| Same-route crossfade | \"Same place, different content\" |\n388\t\n389\tFor API details and more patterns:\n390\t\n391\t- [View transition configuration](/docs/app/api-reference/config/next-config-js/viewTransition)\n392\t- [Link `transitionTypes` prop](/docs/app/api-reference/components/link#transitiontypes)\n393\t- [`useRouter`](/docs/app/api-reference/functions/use-router), which also supports `transitionTypes` in `push()` and `replace()`\n394\t- [React `ViewTransition` component](https://react.dev/reference/react/ViewTransition)\n395\t- [Complete CSS from this guide](https://github.com/vercel-labs/react-view-transitions-demo/blob/main/src/app/globals.css) — all keyframes and view transition rules in one file\n396\t"}]},"uuid":"a24fd86c-1f69-4668-8e8b-0d9e58bc00e0","timestamp":"2026-06-09T23:43:49.989Z","toolUseResult":{"type":"text","file":{"filePath":"/workspace/node_modules/next/dist/docs/01-app/02-guides/view-transitions.md","content":"---\ntitle: Designing view transitions\ndescription: Learn how to use view transitions to communicate meaning during navigation, loading, and content changes in a Next.js app.\nnav_title: View transitions\n---\n\nIn web apps, route changes replace the entire page at once. One set of elements disappears, another appears, with no visual connection between them. A user selects a photo thumbnail to view it in detail on another page. They are the same image, but nothing on screen communicates that.\n\nApps that need these transitions typically rely on complex animation libraries that manage mount/unmount lifecycles, track element positions across routes, and coordinate timing manually, to animate how elements enter, exit, and move between states.\n\nReact's `` component integrates with the browser's [View Transitions API](https://developer.mozilla.org/en-US/docs/Web/API/View_Transition_API) to handle this declaratively. You name the elements that should persist, and the browser animates between their old and new positions.\n\nThis guide walks through four patterns that cover the most common cases: morphing shared elements, animating loading states, adding directional navigation, and crossfading content within the same route.\n\n## Example\n\nAs an example, we'll build a photography gallery called _Frames_.\n\nWe'll start by morphing a thumbnail into a hero image (shared elements), then animate the loading skeleton into real content (Suspense reveals), add directional slides for forward and back navigation (route transitions), and finish with crossfades for switching between photographer tabs (same-route transitions).\n\nYou can find the resources used in this example here:\n\n- [Demo](https://react-view-transitions-demo.labs.vercel.dev)\n- [Code](https://github.com/vercel-labs/react-view-transitions-demo)\n\nBefore starting, enable view transitions in your Next.js config:\n\n```ts filename=\"next.config.ts\"\nimport type { NextConfig } from 'next'\n\nconst nextConfig: NextConfig = {\n experimental: {\n viewTransition: true,\n },\n}\n\nexport default nextConfig\n```\n\nApp Router uses [React canary releases](https://react.dev/blog/2023/05/03/react-canaries), which contain all stable React 19 changes as well as newer features like `ViewTransition`. You do not need to install `react@canary` yourself.\n\n> [!NOTE]\n> The View Transitions API is supported in all major browsers, though some animations may behave differently in Safari. Without browser support, your application works normally, the transitions simply do not animate.\n\nThen import the `ViewTransition` component from React:\n\n```tsx\nimport { ViewTransition } from 'react'\n```\n\n`` animations are activated by [Transitions](https://react.dev/reference/react/useTransition), [``](https://react.dev/reference/react/Suspense), and [`useDeferredValue`](https://react.dev/reference/react/useDeferredValue). Regular `setState` calls do not trigger them. In Next.js, route navigations are transitions, so `` animations activate automatically during navigation.\n\n### Step 1: Morph a thumbnail into a hero image\n\nThe gallery displays photos in a grid. Clicking a photo opens a detail page with a larger version of the same image. Without transitions, the thumbnail disappears and the hero appears. Nothing connects them visually. The user has to scan the detail page to confirm they clicked the right photo.\n\nIn motion design, when an object persists across a cut, it communicates continuity. The viewer understands they are looking at the same thing, not a replacement. This is the most important transition pattern: **shared element morphing**.\n\nWrap both the grid thumbnail and the detail hero in `` with the same `name`:\n\n```tsx filename=\"components/photo-grid.tsx\"\nimport { ViewTransition } from 'react'\nimport Image from 'next/image'\nimport Link from 'next/link'\n\nfunction PhotoGrid({ photos }) {\n return (\n \n {photos.map((photo) => (\n \n \n \n \n \n ))}\n
\n )\n}\n```\n\n```tsx filename=\"app/photo/[id]/photo-content.tsx\"\nimport { ViewTransition } from 'react'\nimport Image from 'next/image'\n\nasync function PhotoContent({ id }) {\n const photo = await getPhoto(id)\n\n return (\n \n \n \n )\n}\n```\n\nThe `name` prop creates identity. React finds elements with the same name on the old and new pages, then animates between their size and position automatically. No additional props are needed for the morph to work.\n\nIf we click a thumbnail now, the image scales and repositions from its grid cell to the hero slot. Navigating back reverses the morph. The user sees one object moving, not two objects swapping.\n\n#### Customizing the morph animation\n\nThe morph works without any CSS. To customize it, add `share=\"morph\"`. This assigns the `morph` class to the view transition, which you can target with CSS pseudo-elements. For example, to soften the morph mid-flight with a [`blur`](https://developer.mozilla.org/en-US/docs/Web/CSS/filter-function/blur) keyframe:\n\n```tsx\n\n \n \n```\n\n```css filename=\"app/globals.css\"\n::view-transition-group(.morph) {\n animation-duration: 400ms;\n}\n::view-transition-image-pair(.morph) {\n animation-name: via-blur;\n}\n@keyframes via-blur {\n 30% {\n filter: blur(3px);\n }\n}\n```\n\nThe blur hides pixel-level interpolation artifacts during the transition. At 400ms, the morph is slow enough to register but fast enough to feel direct.\n\n### Step 2: Animate loading states with Suspense reveals\n\nThe photo detail page loads its content asynchronously. While data is in flight, a Suspense boundary shows a skeleton. When the data resolves, the skeleton is replaced by the real content.\n\nWithout a transition, the swap is instant. The skeleton vanishes and the content pops in.\n\nIn motion design, vertical direction encodes hierarchy. Content sliding up communicates arrival. Content sliding down communicates departure. The pair together creates a handoff: the placeholder yields to the real thing.\n\nWrap the Suspense fallback in a `ViewTransition` with an exit animation, and the content in a `ViewTransition` with an enter animation:\n\n```tsx filename=\"app/photo/[id]/page.tsx\"\nimport { Suspense, ViewTransition } from 'react'\n\nexport default async function PhotoPage({ params }) {\n const { id } = await params\n\n return (\n \n \n \n }\n >\n \n \n \n \n )\n}\n```\n\nThe `default=\"none\"` prop prevents this `ViewTransition` from animating during unrelated transitions, like the shared element morph from Step 1. Without it, every transition on the page would trigger every `ViewTransition`'s animation.\n\nThe CSS animations use asymmetric timing. The exit is fast (150ms). The enter is slower (210ms) and delayed until the exit completes:\n\n```css filename=\"app/globals.css\"\n:root {\n --duration-exit: 150ms;\n --duration-enter: 210ms;\n}\n\n::view-transition-old(.slide-down) {\n animation:\n var(--duration-exit) ease-out both fade reverse,\n var(--duration-exit) ease-out both slide-y reverse;\n}\n::view-transition-new(.slide-up) {\n animation:\n var(--duration-enter) ease-in var(--duration-exit) both fade,\n 400ms ease-in both slide-y;\n}\n\n@keyframes fade {\n from {\n filter: blur(3px);\n opacity: 0;\n }\n to {\n filter: blur(0);\n opacity: 1;\n }\n}\n@keyframes slide-y {\n from {\n transform: translateY(10px);\n }\n to {\n transform: translateY(0);\n }\n}\n```\n\nThe asymmetry is deliberate. Old content should leave quickly so it does not compete for attention. New content should arrive more gently so the user has time to register it. The `var(--duration-exit)` delay on the enter animation means the new content waits for the old content to finish leaving before it appears.\n\nIf we refresh the page, the skeleton slides down and fades out, and a moment later the real content slides up and fades in.\n\n### Step 3: Add directional motion for navigation\n\nThe gallery now has morphing images and animated loading states. But navigating between pages still has no directional signal. Forward and back navigations look identical. The user cannot tell from the animation whether they moved deeper into the app or returned to a previous page.\n\nIn film and animation, horizontal direction encodes spatial position. Moving left means progressing forward (like turning a page in a left-to-right language). Moving right means going back. This convention is so ingrained that violating it feels disorienting.\n\nUse the `transitionTypes` prop on ` ` to tag forward navigations:\n\n```tsx filename=\"components/photo-grid.tsx\"\n \n {/* photo thumbnail */}\n\n```\n\nThe same pattern works for any navigation within the app. For example, previous/next arrows on a photo detail page can use `nav-back` and `nav-forward` to animate in the corresponding direction.\n\nFor links that return the user to a previous page, use `nav-back`:\n\n```tsx filename=\"app/photo/[id]/page.tsx\"\n \n ← Gallery\n\n```\n\nThe transition type is not automatic. You decide which links are \"forward\" and which are \"back\" based on your app's navigation hierarchy.\n\nThen wrap page content in a `ViewTransition` that maps transition types to directional animations:\n\n```tsx filename=\"app/photo/[id]/page.tsx\"\n\n {/* page content */}\n \n```\n\nThe `enter` and `exit` props accept an object keyed by transition type. When a navigation carries the `nav-forward` type, the exit animation slides old content left and the enter animation slides new content in from the right. The `default: \"none\"` ensures that transitions without a type (like initial page loads) produce no animation.\n\nThe CSS for directional slides:\n\n```css filename=\"app/globals.css\"\n::view-transition-old(.nav-forward) {\n --slide-offset: -60px;\n animation:\n 150ms ease-in both fade reverse,\n 400ms ease-in-out both slide reverse;\n}\n::view-transition-new(.nav-forward) {\n --slide-offset: 60px;\n animation:\n 210ms ease-out 150ms both fade,\n 400ms ease-in-out both slide;\n}\n\n::view-transition-old(.nav-back) {\n --slide-offset: 60px;\n animation:\n 150ms ease-in both fade reverse,\n 400ms ease-in-out both slide reverse;\n}\n::view-transition-new(.nav-back) {\n --slide-offset: -60px;\n animation:\n 210ms ease-out 150ms both fade,\n 400ms ease-in-out both slide;\n}\n\n@keyframes slide {\n from {\n translate: var(--slide-offset);\n }\n to {\n translate: 0;\n }\n}\n```\n\nThe 60px offset is enough to communicate direction without making the user track a fast-moving element across the screen.\n\n#### Anchoring the header\n\nDuring directional slides, the header should not move. A sliding header breaks the user's spatial anchor. They need one fixed reference point to understand that the _content_ moved, not the entire viewport.\n\nAssign the header a `viewTransitionName` and suppress its animation in CSS:\n\n```tsx filename=\"components/header.tsx\"\n\n {/* navigation links */}\n \n```\n\n```css filename=\"app/globals.css\"\n::view-transition-group(site-header) {\n animation: none;\n z-index: 100;\n}\n::view-transition-old(site-header) {\n display: none;\n}\n::view-transition-new(site-header) {\n animation: none;\n}\n```\n\nThe `display: none` on the old snapshot prevents a flash where both old and new headers are briefly visible. The `z-index: 100` ensures the header renders above the sliding content.\n\nIf we navigate forward to a photo, content slides left. If we click the \"← Gallery\" link (tagged with `nav-back`), content slides right. The header stays fixed throughout both transitions.\n\nBrowser-initiated back navigations (the back button or swipe gestures) do not carry a transition type, so the directional slide does not play. The shared element morph from Step 1 still applies if both pages have matching `name` props.\n\n#### Respecting reduced motion\n\nDirectional slides simulate physical movement across the viewport. This is the most common trigger for motion sensitivity. Morphs, reveals, and crossfades carry less risk since they affect smaller areas or rely on opacity rather than position.\n\nThe simplest approach is to disable all animation durations:\n\n```css filename=\"app/globals.css\"\n@media (prefers-reduced-motion: reduce) {\n ::view-transition-old(*),\n ::view-transition-new(*),\n ::view-transition-group(*) {\n animation-duration: 0s !important;\n animation-delay: 0s !important;\n }\n}\n```\n\nWithout animation, content swaps instantly, which is the browser's default behavior. A more refined approach would preserve crossfades and opacity transitions while removing positional movement. See [\"No Motion Isn't Always prefers-reduced-motion\"](https://css-tricks.com/nuking-motion-with-prefers-reduced-motion/) for more on this.\n\n### Step 4: Crossfade content within the same route\n\nThe gallery has a photographer section with tabs. Each tab shows a different photographer's photos, but the route structure is the same: `/collection/[slug]`. Clicking between tabs does not feel like navigating to a new page. It feels like switching content within the same container.\n\nA directional slide would be wrong here. Slides communicate \"going to a new place.\" A crossfade communicates \"same place, different content.\" The container persists (continuity), only the grid inside changes (swap).\n\nUse a `ViewTransition` with `key` set to the current slug. When the key changes, React triggers a transition between the old and new content:\n\n```tsx filename=\"app/collection/[slug]/page.tsx\"\nimport { Suspense, ViewTransition } from 'react'\n\nexport default async function CollectionPage({ params }) {\n const { slug } = await params\n\n return (\n }>\n \n \n \n \n )\n}\n```\n\nThe `share=\"auto\"` and `enter=\"auto\"` props tell React to use its default crossfade animation. The `name` prop gives the container an identity so React knows what to animate. The `key={slug}` change is what triggers the transition.\n\nIf we click between photographer tabs, the grid crossfades. The tab bar and surrounding layout do not move. Only the photo grid transitions between states.\n\n## Next steps\n\nYou now know how to use view transitions to communicate meaning during navigation. Shared elements communicate continuity across routes. Suspense reveals animate loading handoffs. Directional slides encode navigation history. Crossfades signal content changes within the same location.\n\nEach pattern answers a different question for the user:\n\n| Pattern | What it communicates |\n| ---------------------- | ------------------------------- |\n| Shared element (morph) | \"Same thing, going deeper\" |\n| Suspense reveal | \"Data loaded\" |\n| Directional slide | \"Going forward / coming back\" |\n| Same-route crossfade | \"Same place, different content\" |\n\nFor API details and more patterns:\n\n- [View transition configuration](/docs/app/api-reference/config/next-config-js/viewTransition)\n- [Link `transitionTypes` prop](/docs/app/api-reference/components/link#transitiontypes)\n- [`useRouter`](/docs/app/api-reference/functions/use-router), which also supports `transitionTypes` in `push()` and `replace()`\n- [React `ViewTransition` component](https://react.dev/reference/react/ViewTransition)\n- [Complete CSS from this guide](https://github.com/vercel-labs/react-view-transitions-demo/blob/main/src/app/globals.css) — all keyframes and view transition rules in one file\n","numLines":396,"startLine":1,"totalLines":396}},"sourceToolAssistantUUID":"7e1cfc0d-7b9d-4739-b5d9-1d0fb9f4b12e","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"96837b0f-635a-41cf-a96a-afcd7545d5be","version":"2.1.170","gitBranch":"master"}
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+{"parentUuid":"fe322adc-78ab-4946-8439-ac63d9da4a8d","isSidechain":false,"promptId":"0fca1cdc-f3f5-40ba-8dd6-b2c4f587f8d2","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01NPwtNZafCUtF4mq7Qq8NQz","type":"tool_result","content":"1\t* {\n2\t margin: 0;\n3\t padding: 0;\n4\t box-sizing: border-box;\n5\t}\n6\t\n7\tbody {\n8\t font-family:\n9\t system-ui,\n10\t -apple-system,\n11\t sans-serif;\n12\t color: #111;\n13\t background: #fafafa;\n14\t}\n15\t\n16\tmain {\n17\t max-width: 1200px;\n18\t margin: 0 auto;\n19\t padding: 2rem;\n20\t}\n21\t\n22\th1 {\n23\t margin-bottom: 1.5rem;\n24\t}\n25\t\n26\t.product-grid {\n27\t display: grid;\n28\t grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));\n29\t gap: 1.5rem;\n30\t}\n31\t\n32\t.product-card {\n33\t border-radius: 12px;\n34\t overflow: hidden;\n35\t background: white;\n36\t box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);\n37\t text-decoration: none;\n38\t color: inherit;\n39\t}\n40\t\n41\t.product-card h2 {\n42\t padding: 0.75rem 1rem 0;\n43\t font-size: 1rem;\n44\t}\n45\t\n46\t.product-card p {\n47\t padding: 0.25rem 1rem 1rem;\n48\t color: #666;\n49\t}\n50\t\n51\t.product-image {\n52\t width: 100%;\n53\t aspect-ratio: 4 / 3;\n54\t}\n55\t\n56\t.product-detail {\n57\t display: grid;\n58\t grid-template-columns: 1fr 1fr;\n59\t gap: 2rem;\n60\t align-items: start;\n61\t}\n62\t\n63\t.product-hero {\n64\t width: 100%;\n65\t aspect-ratio: 1;\n66\t border-radius: 12px;\n67\t}\n68\t\n69\t.product-info h1 {\n70\t font-size: 2rem;\n71\t}\n72\t\n73\t.product-price {\n74\t font-size: 1.5rem;\n75\t font-weight: 600;\n76\t margin: 0.5rem 0;\n77\t}\n78\t\n79\t.product-description {\n80\t color: #666;\n81\t line-height: 1.6;\n82\t}\n83\t\n84\t.back-link {\n85\t display: inline-block;\n86\t margin-bottom: 1.5rem;\n87\t color: #666;\n88\t text-decoration: none;\n89\t}\n90\t\n91\t.skeleton-image {\n92\t background: #e5e5e5;\n93\t animation: pulse 1.5s ease-in-out infinite;\n94\t}\n95\t\n96\t.skeleton-text {\n97\t height: 1rem;\n98\t background: #e5e5e5;\n99\t border-radius: 4px;\n100\t margin: 0.5rem 1rem;\n101\t animation: pulse 1.5s ease-in-out infinite;\n102\t}\n103\t\n104\t.skeleton-text.short {\n105\t width: 60%;\n106\t}\n107\t\n108\t.skeleton-text.large {\n109\t height: 2rem;\n110\t width: 70%;\n111\t}\n112\t\n113\t@keyframes pulse {\n114\t 0%,\n115\t 100% {\n116\t opacity: 1;\n117\t }\n118\t 50% {\n119\t opacity: 0.5;\n120\t }\n121\t}\n122\t"}]},"uuid":"dc080c1e-ad40-4d2a-96f9-3e58f4904bbe","timestamp":"2026-06-09T23:43:58.435Z","toolUseResult":{"type":"text","file":{"filePath":"/workspace/app/globals.css","content":"* {\n margin: 0;\n padding: 0;\n box-sizing: border-box;\n}\n\nbody {\n font-family:\n system-ui,\n -apple-system,\n sans-serif;\n color: #111;\n background: #fafafa;\n}\n\nmain {\n max-width: 1200px;\n margin: 0 auto;\n padding: 2rem;\n}\n\nh1 {\n margin-bottom: 1.5rem;\n}\n\n.product-grid {\n display: grid;\n grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));\n gap: 1.5rem;\n}\n\n.product-card {\n border-radius: 12px;\n overflow: hidden;\n background: white;\n box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);\n text-decoration: none;\n color: inherit;\n}\n\n.product-card h2 {\n padding: 0.75rem 1rem 0;\n font-size: 1rem;\n}\n\n.product-card p {\n padding: 0.25rem 1rem 1rem;\n color: #666;\n}\n\n.product-image {\n width: 100%;\n aspect-ratio: 4 / 3;\n}\n\n.product-detail {\n display: grid;\n grid-template-columns: 1fr 1fr;\n gap: 2rem;\n align-items: start;\n}\n\n.product-hero {\n width: 100%;\n aspect-ratio: 1;\n border-radius: 12px;\n}\n\n.product-info h1 {\n font-size: 2rem;\n}\n\n.product-price {\n font-size: 1.5rem;\n font-weight: 600;\n margin: 0.5rem 0;\n}\n\n.product-description {\n color: #666;\n line-height: 1.6;\n}\n\n.back-link {\n display: inline-block;\n margin-bottom: 1.5rem;\n color: #666;\n text-decoration: none;\n}\n\n.skeleton-image {\n background: #e5e5e5;\n animation: pulse 1.5s ease-in-out infinite;\n}\n\n.skeleton-text {\n height: 1rem;\n background: #e5e5e5;\n border-radius: 4px;\n margin: 0.5rem 1rem;\n animation: pulse 1.5s ease-in-out infinite;\n}\n\n.skeleton-text.short {\n width: 60%;\n}\n\n.skeleton-text.large {\n height: 2rem;\n width: 70%;\n}\n\n@keyframes pulse {\n 0%,\n 100% {\n opacity: 1;\n }\n 50% {\n opacity: 0.5;\n }\n}\n","numLines":122,"startLine":1,"totalLines":122}},"sourceToolAssistantUUID":"fe322adc-78ab-4946-8439-ac63d9da4a8d","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"96837b0f-635a-41cf-a96a-afcd7545d5be","version":"2.1.170","gitBranch":"master"}
+{"parentUuid":"4e0eaf80-e46c-43c5-a9a7-04e6fdadeb19","isSidechain":false,"promptId":"0fca1cdc-f3f5-40ba-8dd6-b2c4f587f8d2","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01MyU7DxaLC6nPQUJCBLqDNs","type":"tool_result","content":"1\timport Link from 'next/link'\n2\timport { products } from '@/lib/products'\n3\t\n4\texport function ProductGrid() {\n5\t return (\n6\t \n7\t {products.map((product) => (\n8\t
\n13\t
\n17\t
{product.name} \n18\t
${product.price}
\n19\t \n20\t ))}\n21\t
\n22\t )\n23\t}\n24\t"}]},"uuid":"4dd58777-de75-4b1b-bc85-158edfaebc76","timestamp":"2026-06-09T23:43:56.792Z","toolUseResult":{"type":"text","file":{"filePath":"/workspace/app/ProductGrid.tsx","content":"import Link from 'next/link'\nimport { products } from '@/lib/products'\n\nexport function ProductGrid() {\n return (\n \n {products.map((product) => (\n
\n
\n
{product.name} \n
${product.price}
\n \n ))}\n
\n )\n}\n","numLines":24,"startLine":1,"totalLines":24}},"sourceToolAssistantUUID":"4e0eaf80-e46c-43c5-a9a7-04e6fdadeb19","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"96837b0f-635a-41cf-a96a-afcd7545d5be","version":"2.1.170","gitBranch":"master"}
+{"parentUuid":"4dd58777-de75-4b1b-bc85-158edfaebc76","isSidechain":false,"message":{"id":"gen_01KTQCAQPTW06E4Y7733MSF8Z4","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01Jtif1qFsiKv8cRoU3VX4t4","name":"Read","input":{"file_path":"/workspace/app/ProductSkeleton.tsx"}}],"model":"claude-fable-5","stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":7661,"cache_read_input_tokens":33301,"output_tokens":514,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":0,"ephemeral_5m_input_tokens":7661},"inference_geo":"","iterations":[],"speed":"standard"},"stop_details":null},"type":"assistant","uuid":"c62066a4-c837-4fd1-bfe1-23baa103f42d","timestamp":"2026-06-09T23:43:57.293Z","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"96837b0f-635a-41cf-a96a-afcd7545d5be","version":"2.1.170","gitBranch":"master"}
+{"parentUuid":"c62066a4-c837-4fd1-bfe1-23baa103f42d","isSidechain":false,"promptId":"0fca1cdc-f3f5-40ba-8dd6-b2c4f587f8d2","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01Jtif1qFsiKv8cRoU3VX4t4","type":"tool_result","content":"1\texport function ProductGridSkeleton() {\n2\t return (\n3\t \n4\t {Array.from({ length: 4 }).map((_, i) => (\n5\t
\n10\t ))}\n11\t
\n12\t )\n13\t}\n14\t"}]},"uuid":"3b288e93-9785-4561-8f45-4c5b9ab506e0","timestamp":"2026-06-09T23:43:57.296Z","toolUseResult":{"type":"text","file":{"filePath":"/workspace/app/ProductSkeleton.tsx","content":"export function ProductGridSkeleton() {\n return (\n \n {Array.from({ length: 4 }).map((_, i) => (\n
\n ))}\n
\n )\n}\n","numLines":14,"startLine":1,"totalLines":14}},"sourceToolAssistantUUID":"c62066a4-c837-4fd1-bfe1-23baa103f42d","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"96837b0f-635a-41cf-a96a-afcd7545d5be","version":"2.1.170","gitBranch":"master"}
+{"parentUuid":"3b288e93-9785-4561-8f45-4c5b9ab506e0","isSidechain":false,"message":{"id":"gen_01KTQCAQPTW06E4Y7733MSF8Z4","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01JeNMs5iUB37V5WGN2PVN8V","name":"Read","input":{"file_path":"/workspace/app/layout.tsx"}}],"model":"claude-fable-5","stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":7661,"cache_read_input_tokens":33301,"output_tokens":514,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":0,"ephemeral_5m_input_tokens":7661},"inference_geo":"","iterations":[],"speed":"standard"},"stop_details":null},"type":"assistant","uuid":"ec1c7244-b217-482e-8313-fbec75b7406d","timestamp":"2026-06-09T23:43:57.880Z","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"96837b0f-635a-41cf-a96a-afcd7545d5be","version":"2.1.170","gitBranch":"master"}
+{"parentUuid":"ec1c7244-b217-482e-8313-fbec75b7406d","isSidechain":false,"promptId":"0fca1cdc-f3f5-40ba-8dd6-b2c4f587f8d2","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01JeNMs5iUB37V5WGN2PVN8V","type":"tool_result","content":"1\timport type { Metadata } from 'next'\n2\timport './globals.css'\n3\t\n4\texport const metadata: Metadata = {\n5\t title: 'Product Gallery',\n6\t description: 'A simple product gallery',\n7\t}\n8\t\n9\texport default function RootLayout({\n10\t children,\n11\t}: Readonly<{\n12\t children: React.ReactNode\n13\t}>) {\n14\t return (\n15\t \n16\t {children}\n17\t \n18\t )\n19\t}\n20\t"}]},"uuid":"4d9052ed-49bb-4f35-9cec-1d20cda14fc4","timestamp":"2026-06-09T23:43:57.883Z","toolUseResult":{"type":"text","file":{"filePath":"/workspace/app/layout.tsx","content":"import type { Metadata } from 'next'\nimport './globals.css'\n\nexport const metadata: Metadata = {\n title: 'Product Gallery',\n description: 'A simple product gallery',\n}\n\nexport default function RootLayout({\n children,\n}: Readonly<{\n children: React.ReactNode\n}>) {\n return (\n \n {children}\n \n )\n}\n","numLines":20,"startLine":1,"totalLines":20}},"sourceToolAssistantUUID":"ec1c7244-b217-482e-8313-fbec75b7406d","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"96837b0f-635a-41cf-a96a-afcd7545d5be","version":"2.1.170","gitBranch":"master"}
+{"parentUuid":"4d9052ed-49bb-4f35-9cec-1d20cda14fc4","isSidechain":false,"message":{"id":"gen_01KTQCAQPTW06E4Y7733MSF8Z4","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01NNk9bZnjHTRpgx3eYuxezF","name":"Read","input":{"file_path":"/workspace/lib/products.ts"}}],"model":"claude-fable-5","stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":7661,"cache_read_input_tokens":33301,"output_tokens":514,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":0,"ephemeral_5m_input_tokens":7661},"inference_geo":"","iterations":[],"speed":"standard"},"stop_details":null},"type":"assistant","uuid":"e553442a-d33e-4516-86f8-a44b127f2d6e","timestamp":"2026-06-09T23:43:58.218Z","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"96837b0f-635a-41cf-a96a-afcd7545d5be","version":"2.1.170","gitBranch":"master"}
+{"parentUuid":"e553442a-d33e-4516-86f8-a44b127f2d6e","isSidechain":false,"promptId":"0fca1cdc-f3f5-40ba-8dd6-b2c4f587f8d2","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01NNk9bZnjHTRpgx3eYuxezF","type":"tool_result","content":"1\texport type Product = {\n2\t slug: string\n3\t name: string\n4\t description: string\n5\t price: number\n6\t color: string\n7\t}\n8\t\n9\texport const products: Product[] = [\n10\t {\n11\t slug: 'classic-sneakers',\n12\t name: 'Classic Sneakers',\n13\t description: 'Timeless design meets everyday comfort.',\n14\t price: 89,\n15\t color: '#4F46E5',\n16\t },\n17\t {\n18\t slug: 'leather-backpack',\n19\t name: 'Leather Backpack',\n20\t description: 'Handcrafted from premium full-grain leather.',\n21\t price: 129,\n22\t color: '#059669',\n23\t },\n24\t {\n25\t slug: 'wireless-headphones',\n26\t name: 'Wireless Headphones',\n27\t description: 'Crystal-clear audio with active noise cancellation.',\n28\t price: 199,\n29\t color: '#DC2626',\n30\t },\n31\t {\n32\t slug: 'cotton-hoodie',\n33\t name: 'Cotton Hoodie',\n34\t description: 'Ultra-soft organic cotton blend for all-day wear.',\n35\t price: 65,\n36\t color: '#D97706',\n37\t },\n38\t]\n39\t\n40\texport function getProduct(slug: string): Product | undefined {\n41\t return products.find((p) => p.slug === slug)\n42\t}\n43\t"}]},"uuid":"e9b3a4ad-1080-49e0-b9fe-26e39f75fe94","timestamp":"2026-06-09T23:43:58.221Z","toolUseResult":{"type":"text","file":{"filePath":"/workspace/lib/products.ts","content":"export type Product = {\n slug: string\n name: string\n description: string\n price: number\n color: string\n}\n\nexport const products: Product[] = [\n {\n slug: 'classic-sneakers',\n name: 'Classic Sneakers',\n description: 'Timeless design meets everyday comfort.',\n price: 89,\n color: '#4F46E5',\n },\n {\n slug: 'leather-backpack',\n name: 'Leather Backpack',\n description: 'Handcrafted from premium full-grain leather.',\n price: 129,\n color: '#059669',\n },\n {\n slug: 'wireless-headphones',\n name: 'Wireless Headphones',\n description: 'Crystal-clear audio with active noise cancellation.',\n price: 199,\n color: '#DC2626',\n },\n {\n slug: 'cotton-hoodie',\n name: 'Cotton Hoodie',\n description: 'Ultra-soft organic cotton blend for all-day wear.',\n price: 65,\n color: '#D97706',\n },\n]\n\nexport function getProduct(slug: string): Product | undefined {\n return products.find((p) => p.slug === slug)\n}\n","numLines":43,"startLine":1,"totalLines":43}},"sourceToolAssistantUUID":"e553442a-d33e-4516-86f8-a44b127f2d6e","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"96837b0f-635a-41cf-a96a-afcd7545d5be","version":"2.1.170","gitBranch":"master"}
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ViewTransitionClassPerType[string];\n/workspace/node_modules/@types/react/canary.d.ts:49: export interface ViewTransitionProps {\n/workspace/node_modules/@types/react/canary.d.ts:54: default?: ViewTransitionClass | undefined;\n/workspace/node_modules/@types/react/canary.d.ts:56: * Combined with {@link className} if this `` or its parent Component is mounted and there's no other with the same name being deleted.\n/workspace/node_modules/@types/react/canary.d.ts:59: enter?: ViewTransitionClass | undefined;\n/workspace/node_modules/@types/react/canary.d.ts:61: * Combined with {@link className} if this `` or its parent Component is unmounted and there's no other with the same name being deleted.\n/workspace/node_modules/@types/react/canary.d.ts:64: exit?: ViewTransitionClass | undefined;\n/workspace/node_modules/@types/react/canary.d.ts:69: * A difference between this and the browser's built-in view-transition-name: auto is that switching the DOM nodes within the `` component preserves the same name so this example cross-fades between the DOM nodes instead of causing an exit and enter.\n/workspace/node_modules/@types/react/canary.d.ts:74: * The `` or its parent Component is mounted and there's no other `` with the same name being deleted.\n/workspace/node_modules/@types/react/canary.d.ts:76: onEnter?: (instance: ViewTransitionInstance, types: Array) => void | (() => void);\n/workspace/node_modules/@types/react/canary.d.ts:78: * The `` or its parent Component is unmounted and there's no other `` with the same name being deleted.\n/workspace/node_modules/@types/react/canary.d.ts:80: onExit?: (instance: ViewTransitionInstance, types: Array) => void | (() => void);\n/workspace/node_modules/@types/react/canary.d.ts:82: * This `` is being mounted and another `` instance with the same name is being unmounted elsewhere.\n/workspace/node_modules/@types/react/canary.d.ts:84: onShare?: (instance: ViewTransitionInstance, types: Array) => void | (() => void);\n/workspace/node_modules/@types/react/canary.d.ts:86: * The content of `` has changed either due to DOM mutations or because an inner child `` has resized.\n/workspace/node_modules/@types/react/canary.d.ts:88: onUpdate?: (instance: ViewTransitionInstance, types: Array) => void | (() => void);\nLICENSE\nREADME.md\ncanary.d.ts\ncompiler-runtime.d.ts\nexperimental.d.ts\nglobal.d.ts\nindex.d.ts\njsx-dev-runtime.d.ts\njsx-runtime.d.ts\npackage.json\nts5.0\n\"version\": \"19.2.17\"","is_error":false}]},"uuid":"7f827d55-1176-49af-b0b8-09919b679575","timestamp":"2026-06-09T23:44:33.690Z","toolUseResult":{"stdout":"/workspace/node_modules/@types/react/canary.d.ts:38: // @enableViewTransition\n/workspace/node_modules/@types/react/canary.d.ts:39: export interface ViewTransitionInstance {\n/workspace/node_modules/@types/react/canary.d.ts:41: * The {@link ViewTransitionProps name} that was used in the corresponding {@link ViewTransition} component or `\"auto\"` if the `name` prop was omitted.\n/workspace/node_modules/@types/react/canary.d.ts:46: export type ViewTransitionClassPerType = Record<\"default\" | (string & {}), \"none\" | \"auto\" | (string & {})>;\n/workspace/node_modules/@types/react/canary.d.ts:47: export type ViewTransitionClass = ViewTransitionClassPerType | ViewTransitionClassPerType[string];\n/workspace/node_modules/@types/react/canary.d.ts:49: export interface ViewTransitionProps {\n/workspace/node_modules/@types/react/canary.d.ts:54: default?: ViewTransitionClass | undefined;\n/workspace/node_modules/@types/react/canary.d.ts:56: * Combined with {@link className} if this `` or its parent Component is mounted and there's no other with the same name being deleted.\n/workspace/node_modules/@types/react/canary.d.ts:59: enter?: ViewTransitionClass | undefined;\n/workspace/node_modules/@types/react/canary.d.ts:61: * Combined with {@link className} if this `` or its parent Component is unmounted and there's no other with the same name being deleted.\n/workspace/node_modules/@types/react/canary.d.ts:64: exit?: ViewTransitionClass | undefined;\n/workspace/node_modules/@types/react/canary.d.ts:69: * A difference between this and the browser's built-in view-transition-name: auto is that switching the DOM nodes within the `` component preserves the same name so this example cross-fades between the DOM nodes instead of causing an exit and enter.\n/workspace/node_modules/@types/react/canary.d.ts:74: * The `` or its parent Component is mounted and there's no other `` with the same name being deleted.\n/workspace/node_modules/@types/react/canary.d.ts:76: onEnter?: (instance: ViewTransitionInstance, types: Array) => void | (() => void);\n/workspace/node_modules/@types/react/canary.d.ts:78: * The `` or its parent Component is unmounted and there's no other `` with the same name being deleted.\n/workspace/node_modules/@types/react/canary.d.ts:80: onExit?: (instance: ViewTransitionInstance, types: Array) => void | (() => void);\n/workspace/node_modules/@types/react/canary.d.ts:82: * This `` is being mounted and another `` instance with the same name is being unmounted elsewhere.\n/workspace/node_modules/@types/react/canary.d.ts:84: onShare?: (instance: ViewTransitionInstance, types: Array) => void | (() => void);\n/workspace/node_modules/@types/react/canary.d.ts:86: * The content of `` has changed either due to DOM mutations or because an inner child `` has resized.\n/workspace/node_modules/@types/react/canary.d.ts:88: onUpdate?: (instance: ViewTransitionInstance, types: Array) => void | (() => void);\nLICENSE\nREADME.md\ncanary.d.ts\ncompiler-runtime.d.ts\nexperimental.d.ts\nglobal.d.ts\nindex.d.ts\njsx-dev-runtime.d.ts\njsx-runtime.d.ts\npackage.json\nts5.0\n\"version\": \"19.2.17\"","stderr":"","interrupted":false,"isImage":false,"noOutputExpected":false},"sourceToolAssistantUUID":"5477e6cd-08a0-488f-bd06-c462724f681c","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"96837b0f-635a-41cf-a96a-afcd7545d5be","version":"2.1.170","gitBranch":"master"}
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+{"parentUuid":"574fe56d-edc3-4a2e-84ca-11e1e00dbe02","isSidechain":false,"promptId":"0fca1cdc-f3f5-40ba-8dd6-b2c4f587f8d2","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01GduPwUeUTYABCRyHEqxLkN","type":"tool_result","content":"109: export const ViewTransition: ExoticComponent;\n2: \"compilerOptions\": {\n4: \"lib\": [\"dom\", \"dom.iterable\", \"esnext\"],\n{\n \"compilerOptions\": {\n \"target\": \"ES2017\",\n \"lib\": [\"dom\", \"dom.iterable\", \"esnext\"],\n \"allowJs\": true,\n \"skipLibCheck\": true,\n \"strict\": true,\n \"noEmit\": true,\n \"esModuleInterop\": true,\n \"module\": \"esnext\",\n \"moduleResolution\": \"bundler\",\n \"resolveJsonModule\": true,\n \"isolatedModules\": true,\n \"jsx\": \"react-jsx\",\n \"incremental\": true,\n \"plugins\": [\n {\n \"name\": \"next\"\n }\n ],\n \"paths\": {\n \"@/*\": [\"./*\"]\n }\n },\n \"include\": [\"next-env.d.ts\", \"**/*.ts\", \"**/*.tsx\", \".next/types/**/*.ts\"],\n \"exclude\": [\"node_modules\"]\n}","is_error":false}]},"uuid":"4489e66f-8ceb-4012-b103-2cdfa9889b6a","timestamp":"2026-06-09T23:44:37.911Z","toolUseResult":{"stdout":"109: export const ViewTransition: ExoticComponent;\n2: \"compilerOptions\": {\n4: \"lib\": [\"dom\", \"dom.iterable\", \"esnext\"],\n{\n \"compilerOptions\": {\n \"target\": \"ES2017\",\n \"lib\": [\"dom\", \"dom.iterable\", \"esnext\"],\n \"allowJs\": true,\n \"skipLibCheck\": true,\n \"strict\": true,\n \"noEmit\": true,\n \"esModuleInterop\": true,\n \"module\": \"esnext\",\n \"moduleResolution\": \"bundler\",\n \"resolveJsonModule\": true,\n \"isolatedModules\": true,\n \"jsx\": \"react-jsx\",\n \"incremental\": true,\n \"plugins\": [\n {\n \"name\": \"next\"\n }\n ],\n \"paths\": {\n \"@/*\": [\"./*\"]\n }\n },\n \"include\": [\"next-env.d.ts\", \"**/*.ts\", \"**/*.tsx\", \".next/types/**/*.ts\"],\n \"exclude\": [\"node_modules\"]\n}","stderr":"","interrupted":false,"isImage":false,"noOutputExpected":false},"sourceToolAssistantUUID":"574fe56d-edc3-4a2e-84ca-11e1e00dbe02","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"96837b0f-635a-41cf-a96a-afcd7545d5be","version":"2.1.170","gitBranch":"master"}
+{"parentUuid":"4489e66f-8ceb-4012-b103-2cdfa9889b6a","isSidechain":false,"message":{"id":"gen_01KTQCC5HSCQ8RQW2JJ01DED1R","type":"message","role":"assistant","content":[{"type":"thinking","thinking":"","signature":"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"}],"model":"claude-fable-5","stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":563,"cache_read_input_tokens":47746,"output_tokens":537,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":0,"ephemeral_5m_input_tokens":563},"inference_geo":"","iterations":[],"speed":"standard"},"stop_details":null},"type":"assistant","uuid":"c49a7326-8a83-48d8-a6b0-eab9a56afbe8","timestamp":"2026-06-09T23:44:45.868Z","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"96837b0f-635a-41cf-a96a-afcd7545d5be","version":"2.1.170","gitBranch":"master"}
+{"parentUuid":"c49a7326-8a83-48d8-a6b0-eab9a56afbe8","isSidechain":false,"message":{"id":"gen_01KTQCC5HSCQ8RQW2JJ01DED1R","type":"message","role":"assistant","content":[{"type":"text","text":"`ViewTransition` types live in `react/canary.d.ts`, so I'll need a triple-slash reference to activate them. Let me confirm the runtime export exists in Next's vendored React:"}],"model":"claude-fable-5","stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":563,"cache_read_input_tokens":47746,"output_tokens":537,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":0,"ephemeral_5m_input_tokens":563},"inference_geo":"","iterations":[],"speed":"standard"},"stop_details":null},"type":"assistant","uuid":"90370775-5526-4f5d-b43c-c63d7930a9c8","timestamp":"2026-06-09T23:44:45.868Z","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"96837b0f-635a-41cf-a96a-afcd7545d5be","version":"2.1.170","gitBranch":"master"}
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\n
\n
\n \n
{product.name} \n
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\n \n ))}\n
\n )\n}\n","structuredPatch":[{"oldStart":1,"oldLines":3,"newStart":1,"newLines":4,"lines":["+import { ViewTransition } from 'react'"," import Link from 'next/link'"," import { products } from '@/lib/products'"," "]},{"oldStart":9,"oldLines":11,"newStart":10,"newLines":14,"lines":[" key={product.slug}"," href={`/product/${product.slug}`}"," className=\"product-card\"","+ transitionTypes={['nav-forward']}"," >","-
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\n
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{product.description}
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\n
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{product.name} \n14\t
${product.price}
\n15\t
{product.description}
\n16\t
\n17\t )\n18\t}\n19\t\n20\tfunction DetailsSkeleton() {\n21\t return (\n22\t \n23\t
\n24\t
\n25\t
\n26\t
\n27\t )\n28\t}\n29\t\n30\texport default async function ProductPage({\n31\t params,\n32\t}: {\n33\t params: Promise<{ slug: string }>\n34\t}) {\n35\t const { slug } = await params\n36\t const product = products.find((p) => p.slug === slug)\n37\t if (!product) notFound()\n38\t\n39\t return (\n40\t \n41\t
\n42\t ← Back to products\n43\t \n44\t
\n45\t
\n49\t
}>\n50\t
\n51\t \n52\t
\n53\t
\n54\t )\n55\t}\n56\t"}]},"uuid":"26ad45d0-03a3-443e-98f4-ce87eca6cbee","timestamp":"2026-06-09T23:46:21.606Z","toolUseResult":{"type":"text","file":{"filePath":"/workspace/app/product/[slug]/page.tsx","content":"import { Suspense } from 'react'\nimport Link from 'next/link'\nimport { getProduct, products } from '@/lib/products'\nimport { notFound } from 'next/navigation'\n\nasync function ProductDetails({ slug }: { slug: string }) {\n await new Promise((resolve) => setTimeout(resolve, 100))\n const product = getProduct(slug)\n if (!product) notFound()\n\n return (\n \n
{product.name} \n
${product.price}
\n
{product.description}
\n
\n )\n}\n\nfunction DetailsSkeleton() {\n return (\n \n )\n}\n\nexport default async function ProductPage({\n params,\n}: {\n params: Promise<{ slug: string }>\n}) {\n const { slug } = await params\n const product = products.find((p) => p.slug === slug)\n if (!product) notFound()\n\n return (\n \n
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\n
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(file state is current in your context — no need to Read it back)"}]},"uuid":"f5fc965d-ab07-447e-90e6-762f8e082579","timestamp":"2026-06-09T23:46:53.386Z","toolUseResult":{"filePath":"/workspace/app/globals.css","oldString":"@keyframes pulse {\n 0%,\n 100% {\n opacity: 1;\n }\n 50% {\n opacity: 0.5;\n }\n}","newString":"@keyframes pulse {\n 0%,\n 100% {\n opacity: 1;\n }\n 50% {\n opacity: 0.5;\n }\n}\n\n/* --- View transitions --- */\n\n:root {\n --duration-exit: 150ms;\n --duration-enter: 210ms;\n}\n\n/* Shared element morph (grid thumbnail <-> detail hero) */\n::view-transition-group(.morph) {\n animation-duration: 400ms;\n}\n::view-transition-image-pair(.morph) {\n animation-name: via-blur;\n}\n@keyframes via-blur {\n 30% {\n filter: blur(3px);\n }\n}\n\n/* Suspense reveal: skeleton slides down and out, content slides up and in */\n::view-transition-old(.slide-down) {\n animation:\n var(--duration-exit) ease-out both fade reverse,\n var(--duration-exit) ease-out both slide-y reverse;\n}\n::view-transition-new(.slide-up) {\n animation:\n var(--duration-enter) ease-in var(--duration-exit) both fade,\n 400ms ease-in both slide-y;\n}\n\n@keyframes fade {\n from {\n filter: blur(3px);\n opacity: 0;\n }\n to {\n filter: blur(0);\n opacity: 1;\n }\n}\n@keyframes slide-y {\n from {\n transform: translateY(10px);\n }\n to {\n transform: translateY(0);\n }\n}\n\n/* Directional navigation: forward slides left, back slides right */\n::view-transition-old(.nav-forward) {\n --slide-offset: -60px;\n animation:\n 150ms ease-in both fade reverse,\n 400ms ease-in-out both slide reverse;\n}\n::view-transition-new(.nav-forward) {\n --slide-offset: 60px;\n animation:\n 210ms ease-out 150ms both fade,\n 400ms ease-in-out both slide;\n}\n\n::view-transition-old(.nav-back) {\n --slide-offset: 60px;\n animation:\n 150ms ease-in both fade reverse,\n 400ms ease-in-out both slide reverse;\n}\n::view-transition-new(.nav-back) {\n --slide-offset: -60px;\n animation:\n 210ms ease-out 150ms both fade,\n 400ms ease-in-out both slide;\n}\n\n@keyframes slide {\n from {\n translate: var(--slide-offset);\n }\n to {\n translate: 0;\n }\n}\n\n@media (prefers-reduced-motion: reduce) {\n ::view-transition-old(*),\n ::view-transition-new(*),\n ::view-transition-group(*) {\n animation-duration: 0s !important;\n animation-delay: 0s !important;\n }\n}","originalFile":"* {\n margin: 0;\n padding: 0;\n box-sizing: border-box;\n}\n\nbody {\n font-family:\n system-ui,\n -apple-system,\n sans-serif;\n color: #111;\n background: #fafafa;\n}\n\nmain {\n max-width: 1200px;\n margin: 0 auto;\n padding: 2rem;\n}\n\nh1 {\n margin-bottom: 1.5rem;\n}\n\n.product-grid {\n display: grid;\n grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));\n gap: 1.5rem;\n}\n\n.product-card {\n border-radius: 12px;\n overflow: hidden;\n background: white;\n box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);\n text-decoration: none;\n color: inherit;\n}\n\n.product-card h2 {\n padding: 0.75rem 1rem 0;\n font-size: 1rem;\n}\n\n.product-card p {\n padding: 0.25rem 1rem 1rem;\n color: #666;\n}\n\n.product-image {\n width: 100%;\n aspect-ratio: 4 / 3;\n}\n\n.product-detail {\n display: grid;\n grid-template-columns: 1fr 1fr;\n gap: 2rem;\n align-items: start;\n}\n\n.product-hero {\n width: 100%;\n aspect-ratio: 1;\n border-radius: 12px;\n}\n\n.product-info h1 {\n font-size: 2rem;\n}\n\n.product-price {\n font-size: 1.5rem;\n font-weight: 600;\n margin: 0.5rem 0;\n}\n\n.product-description {\n color: #666;\n line-height: 1.6;\n}\n\n.back-link {\n display: inline-block;\n margin-bottom: 1.5rem;\n color: #666;\n text-decoration: none;\n}\n\n.skeleton-image {\n background: #e5e5e5;\n animation: pulse 1.5s ease-in-out infinite;\n}\n\n.skeleton-text {\n height: 1rem;\n background: #e5e5e5;\n border-radius: 4px;\n margin: 0.5rem 1rem;\n animation: pulse 1.5s ease-in-out infinite;\n}\n\n.skeleton-text.short {\n width: 60%;\n}\n\n.skeleton-text.large {\n height: 2rem;\n width: 70%;\n}\n\n@keyframes pulse {\n 0%,\n 100% {\n opacity: 1;\n }\n 50% {\n opacity: 0.5;\n }\n}\n","structuredPatch":[{"oldStart":119,"oldLines":3,"newStart":119,"newLines":99,"lines":[" opacity: 0.5;"," }"," }","+","+/* --- View transitions --- */","+","+:root {","+ --duration-exit: 150ms;","+ --duration-enter: 210ms;","+}","+","+/* Shared element morph (grid thumbnail <-> detail hero) */","+::view-transition-group(.morph) {","+ animation-duration: 400ms;","+}","+::view-transition-image-pair(.morph) {","+ animation-name: via-blur;","+}","+@keyframes via-blur {","+ 30% {","+ filter: blur(3px);","+ }","+}","+","+/* Suspense reveal: skeleton slides down and out, content slides up and in */","+::view-transition-old(.slide-down) {","+ animation:","+ var(--duration-exit) ease-out both fade reverse,","+ var(--duration-exit) ease-out both slide-y reverse;","+}","+::view-transition-new(.slide-up) {","+ animation:","+ var(--duration-enter) ease-in var(--duration-exit) both fade,","+ 400ms ease-in both slide-y;","+}","+","+@keyframes fade {","+ from {","+ filter: blur(3px);","+ opacity: 0;","+ }","+ to {","+ filter: blur(0);","+ opacity: 1;","+ }","+}","+@keyframes slide-y {","+ from {","+ transform: translateY(10px);","+ }","+ to {","+ transform: translateY(0);","+ }","+}","+","+/* Directional navigation: forward slides left, back slides right */","+::view-transition-old(.nav-forward) {","+ --slide-offset: -60px;","+ animation:","+ 150ms ease-in both fade reverse,","+ 400ms ease-in-out both slide reverse;","+}","+::view-transition-new(.nav-forward) {","+ --slide-offset: 60px;","+ animation:","+ 210ms ease-out 150ms both fade,","+ 400ms ease-in-out both slide;","+}","+","+::view-transition-old(.nav-back) {","+ --slide-offset: 60px;","+ animation:","+ 150ms ease-in both fade reverse,","+ 400ms ease-in-out both slide reverse;","+}","+::view-transition-new(.nav-back) {","+ --slide-offset: -60px;","+ animation:","+ 210ms ease-out 150ms both fade,","+ 400ms ease-in-out both slide;","+}","+","+@keyframes slide {","+ from {","+ translate: var(--slide-offset);","+ }","+ to {","+ translate: 0;","+ }","+}","+","+@media (prefers-reduced-motion: reduce) {","+ ::view-transition-old(*),","+ ::view-transition-new(*),","+ ::view-transition-group(*) {","+ animation-duration: 0s !important;","+ animation-delay: 0s !important;","+ }","+}"]}],"userModified":false,"replaceAll":false},"sourceToolAssistantUUID":"8eb4679f-e8e0-46f1-8631-3c97ab04ad1a","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"96837b0f-635a-41cf-a96a-afcd7545d5be","version":"2.1.170","gitBranch":"master"}
+{"type":"last-prompt","lastPrompt":"Add view transitions to this product gallery app. When navigating from the grid to a product detail page, the product image should smoothly morph between the thumbnail and the large detail image using…","leafUuid":"f5fc965d-ab07-447e-90e6-762f8e082579","sessionId":"96837b0f-635a-41cf-a96a-afcd7545d5be"}
+{"type":"ai-title","aiTitle":"Add view transitions to product gallery","sessionId":"96837b0f-635a-41cf-a96a-afcd7545d5be"}
+{"parentUuid":"f5fc965d-ab07-447e-90e6-762f8e082579","isSidechain":false,"message":{"id":"gen_01KTQCGA20WEZ3GX2Y1E789NYR","type":"message","role":"assistant","content":[{"type":"text","text":"Now verify everything compiles and builds:"}],"model":"claude-fable-5","stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":1193,"cache_read_input_tokens":59483,"output_tokens":137,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":0,"ephemeral_5m_input_tokens":1193},"inference_geo":"","iterations":[],"speed":"standard"},"stop_details":null},"type":"assistant","uuid":"895a6d9b-9dce-4a74-b40c-50a7f1285223","timestamp":"2026-06-09T23:46:56.644Z","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"96837b0f-635a-41cf-a96a-afcd7545d5be","version":"2.1.170","gitBranch":"master"}
+{"parentUuid":"895a6d9b-9dce-4a74-b40c-50a7f1285223","isSidechain":false,"message":{"id":"gen_01KTQCGA20WEZ3GX2Y1E789NYR","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01WuFGV1sKGqmMWm4WZqC1WX","name":"Bash","input":{"command":"npx tsc --noEmit 2>&1 | head -20","description":"Type-check the project","timeout":120000}}],"model":"claude-fable-5","stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":1193,"cache_read_input_tokens":59483,"output_tokens":137,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":0,"ephemeral_5m_input_tokens":1193},"inference_geo":"","iterations":[],"speed":"standard"},"stop_details":null},"type":"assistant","uuid":"98f5eb76-9279-471a-826d-ba15a3bfbd58","timestamp":"2026-06-09T23:46:57.461Z","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"96837b0f-635a-41cf-a96a-afcd7545d5be","version":"2.1.170","gitBranch":"master"}
+{"parentUuid":"98f5eb76-9279-471a-826d-ba15a3bfbd58","isSidechain":false,"promptId":"0fca1cdc-f3f5-40ba-8dd6-b2c4f587f8d2","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01WuFGV1sKGqmMWm4WZqC1WX","type":"tool_result","content":"(Bash completed with no output)","is_error":false}]},"uuid":"fccfb2d1-9df6-4001-956a-9255cf20956d","timestamp":"2026-06-09T23:46:59.393Z","toolUseResult":{"stdout":"","stderr":"","interrupted":false,"isImage":false,"noOutputExpected":false},"sourceToolAssistantUUID":"98f5eb76-9279-471a-826d-ba15a3bfbd58","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"96837b0f-635a-41cf-a96a-afcd7545d5be","version":"2.1.170","gitBranch":"master"}
+{"parentUuid":"fccfb2d1-9df6-4001-956a-9255cf20956d","isSidechain":false,"message":{"id":"gen_01KTQCGFQ6BEKV0V5HN21E0BC1","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01MYRFaXFGiXEsajwwzGLcbY","name":"Bash","input":{"command":"npm run build 2>&1 | tail -30","description":"Build the Next.js app","timeout":300000}}],"model":"claude-fable-5","stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":145,"cache_read_input_tokens":60676,"output_tokens":113,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":0,"ephemeral_5m_input_tokens":145},"inference_geo":"","iterations":[],"speed":"standard"},"stop_details":null},"type":"assistant","uuid":"de39004a-3aab-4a36-a512-f0a8efe75f31","timestamp":"2026-06-09T23:47:04.317Z","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"96837b0f-635a-41cf-a96a-afcd7545d5be","version":"2.1.170","gitBranch":"master"}
+{"parentUuid":"de39004a-3aab-4a36-a512-f0a8efe75f31","isSidechain":false,"promptId":"0fca1cdc-f3f5-40ba-8dd6-b2c4f587f8d2","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01MYRFaXFGiXEsajwwzGLcbY","type":"tool_result","content":"https://nextjs.org/telemetry\n\n▲ Next.js 16.3.0-canary.46 (Turbopack)\n- Experiments (use with caution):\n ✓ viewTransition\n\n Creating an optimized production build ...\n✓ Compiled successfully in 4.3s\n Running TypeScript ...\n\n We detected TypeScript in your project and reconfigured your tsconfig.json file for you.\n The following suggested values were added to your tsconfig.json. These values can be changed to fit your project's needs:\n\n \t- include was updated to add '.next/dev/types/**/*.ts'\n\n Finished TypeScript in 1669ms ...\n Collecting page data using 1 worker ...\n Generating static pages using 1 worker (0/3) ...\n✓ Generating static pages using 1 worker (3/3) in 133ms\n Finalizing page optimization ...\n\nRoute (app)\n┌ ○ /\n├ ○ /_not-found\n└ ƒ /product/[slug]\n\n\n○ (Static) prerendered as static content\nƒ (Dynamic) server-rendered on demand","is_error":false}]},"uuid":"bd51a8b3-3f5f-4d6c-a115-cffe4747167f","timestamp":"2026-06-09T23:47:12.578Z","toolUseResult":{"stdout":"https://nextjs.org/telemetry\n\n▲ Next.js 16.3.0-canary.46 (Turbopack)\n- Experiments (use with caution):\n ✓ viewTransition\n\n Creating an optimized production build ...\n✓ Compiled successfully in 4.3s\n Running TypeScript ...\n\n We detected TypeScript in your project and reconfigured your tsconfig.json file for you.\n The following suggested values were added to your tsconfig.json. These values can be changed to fit your project's needs:\n\n \t- include was updated to add '.next/dev/types/**/*.ts'\n\n Finished TypeScript in 1669ms ...\n Collecting page data using 1 worker ...\n Generating static pages using 1 worker (0/3) ...\n✓ Generating static pages using 1 worker (3/3) in 133ms\n Finalizing page optimization ...\n\nRoute (app)\n┌ ○ /\n├ ○ /_not-found\n└ ƒ /product/[slug]\n\n\n○ (Static) prerendered as static content\nƒ (Dynamic) server-rendered on demand","stderr":"","interrupted":false,"isImage":false,"noOutputExpected":false},"sourceToolAssistantUUID":"de39004a-3aab-4a36-a512-f0a8efe75f31","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"96837b0f-635a-41cf-a96a-afcd7545d5be","version":"2.1.170","gitBranch":"master"}
+{"parentUuid":"bd51a8b3-3f5f-4d6c-a115-cffe4747167f","isSidechain":false,"message":{"id":"gen_01KTQCGWKC0860NMRDKFQR285V","type":"message","role":"assistant","content":[{"type":"thinking","thinking":"","signature":"CAIS6gIKYggOGAIqQIHvrdlxgXQRxGQeJ/8QQNquLQc43uRmLLlcFTLRPw9qtyCHEpMYHqyJrVB+hEH9EVPIyQpsg/oF1WWOSi6lbtoyDmNsYXVkZS1mYWJsZS01OAFCCHRoaW5raW5nEgx1N1zLek10KR7dH/saDLSPSjm5prciVNyiCSIw+gGTsBLIb28Q1pysz1AbzaI2oPH8EtoqXv9FwgpCAgN/JiL84ajq15jgJvrPjTU+KrUBObCzK7qQzefZS3eBqiPIdd/o26FO4W65AuJGJFKUJWU2slM0MO+DU74KnMTePHYIhYsDwK9ShoAvz88Z7L/zeQoBVCb+pnuDr0sBuNeTP8ricPv/RRCbbTqUldnIzGEu+nouuf8qs5FwG2l8b92taDHd7Ba7p+sJQBwQA8MYgNlA0SvFMKrPuv5q54holPD1xt3ntActKXkslg02rhs+cTKTAtyBaICX0CMex7wyHPSiBCgJ4hgB"}],"model":"claude-fable-5","stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":484,"cache_read_input_tokens":60821,"output_tokens":361,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":0,"ephemeral_5m_input_tokens":484},"inference_geo":"","iterations":[],"speed":"standard"},"stop_details":null},"type":"assistant","uuid":"f64b0fd2-ff3a-4409-8fe5-386febac0d2f","timestamp":"2026-06-09T23:47:17.332Z","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"96837b0f-635a-41cf-a96a-afcd7545d5be","version":"2.1.170","gitBranch":"master"}
+{"parentUuid":"f64b0fd2-ff3a-4409-8fe5-386febac0d2f","isSidechain":false,"message":{"id":"gen_01KTQCGWKC0860NMRDKFQR285V","type":"message","role":"assistant","content":[{"type":"text","text":"Build passes with the `viewTransition` experiment enabled. Let me do a quick runtime smoke test to confirm the transitions are actually wired into the rendered output:"}],"model":"claude-fable-5","stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":484,"cache_read_input_tokens":60821,"output_tokens":361,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":0,"ephemeral_5m_input_tokens":484},"inference_geo":"","iterations":[],"speed":"standard"},"stop_details":null},"type":"assistant","uuid":"cc97e5ef-f9eb-443d-8522-2ec9152cf5f4","timestamp":"2026-06-09T23:47:17.332Z","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"96837b0f-635a-41cf-a96a-afcd7545d5be","version":"2.1.170","gitBranch":"master"}
+{"parentUuid":"cc97e5ef-f9eb-443d-8522-2ec9152cf5f4","isSidechain":false,"message":{"id":"gen_01KTQCGWKC0860NMRDKFQR285V","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01PNa3au8MEy4ULRaJ2M39bz","name":"Bash","input":{"command":"(npm start &) && sleep 3 && curl -s localhost:3000 | grep -o 'vt-name=\"[^\"]*\"\\|view-transition[^ \"]*' | sort -u | head; echo \"--- detail ---\"; curl -s localhost:3000/product/classic-sneakers | grep -o 'vt-name=\"[^\"]*\"\\|view-transition[^ \"]*' | sort -u | head","description":"Start server and check rendered HTML for view transition attributes","timeout":60000}}],"model":"claude-fable-5","stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":484,"cache_read_input_tokens":60821,"output_tokens":361,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":0,"ephemeral_5m_input_tokens":484},"inference_geo":"","iterations":[],"speed":"standard"},"stop_details":null},"type":"assistant","uuid":"bc3d5967-7231-4b92-ac6d-16e69340ecb4","timestamp":"2026-06-09T23:47:19.261Z","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"96837b0f-635a-41cf-a96a-afcd7545d5be","version":"2.1.170","gitBranch":"master"}
+{"parentUuid":"bc3d5967-7231-4b92-ac6d-16e69340ecb4","isSidechain":false,"promptId":"0fca1cdc-f3f5-40ba-8dd6-b2c4f587f8d2","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01PNa3au8MEy4ULRaJ2M39bz","type":"tool_result","content":"> start\n> next start\n\n▲ Next.js 16.3.0-canary.46\n- Local: http://localhost:3000\n- Network: http://100.64.161.242:3000\n✓ Ready in 105ms\nvt-name=\"product-image-classic-sneakers\"\nvt-name=\"product-image-cotton-hoodie\"\nvt-name=\"product-image-leather-backpack\"\nvt-name=\"product-image-wireless-headphones\"\n--- detail ---\nvt-name=\"product-image-classic-sneakers\"","is_error":false}]},"uuid":"bffc53e8-dff5-4d18-b8fd-ac48fe07fb47","timestamp":"2026-06-09T23:47:22.480Z","toolUseResult":{"stdout":"> start\n> next start\n\n▲ Next.js 16.3.0-canary.46\n- Local: http://localhost:3000\n- Network: http://100.64.161.242:3000\n✓ Ready in 105ms\nvt-name=\"product-image-classic-sneakers\"\nvt-name=\"product-image-cotton-hoodie\"\nvt-name=\"product-image-leather-backpack\"\nvt-name=\"product-image-wireless-headphones\"\n--- detail ---\nvt-name=\"product-image-classic-sneakers\"","stderr":"","interrupted":false,"isImage":false,"noOutputExpected":false},"sourceToolAssistantUUID":"bc3d5967-7231-4b92-ac6d-16e69340ecb4","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"96837b0f-635a-41cf-a96a-afcd7545d5be","version":"2.1.170","gitBranch":"master"}
+{"parentUuid":"bffc53e8-dff5-4d18-b8fd-ac48fe07fb47","isSidechain":false,"attachment":{"type":"task_reminder","content":[],"itemCount":0},"type":"attachment","uuid":"727db5dd-ab5b-4216-9bdc-2e2612673a00","timestamp":"2026-06-09T23:47:22.483Z","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"96837b0f-635a-41cf-a96a-afcd7545d5be","version":"2.1.170","gitBranch":"master"}
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\"` shared-element annotations plus the morph/slide classes, and unknown slugs still 404. View transitions are fully wired up.\n\n## What I did\n\nThis Next.js 16 canary integrates React's `` component (imported directly from `'react'`), gated behind an experimental flag — I followed the bundled guide in `node_modules/next/dist/docs/01-app/02-guides/view-transitions.md`.\n\n- **`next.config.ts`** — enabled `experimental.viewTransition`.\n- **Shared element morph** — the grid thumbnail in `app/ProductGrid.tsx:15` and the detail hero in `app/product/[slug]/page.tsx:46` are both wrapped in ``. React matches the names across routes and animates size/position automatically; the `morph` class gets a 400ms duration and a subtle mid-flight blur in CSS to hide interpolation artifacts. The hero sits outside the Suspense boundary (as the existing page already had it), so it's available immediately for the morph while the text details stream in.\n- **Directional slides** — a new shared `app/PageTransition.tsx` wraps each page and maps transition types to animations. Grid → detail links carry `transitionTypes={['nav-forward']}` (content slides left), and the \"← Back to products\" link carries `nav-back` (slides right). The `default: 'none'` mapping keeps untyped transitions (initial loads, browser back button) from sliding — though the image morph still plays on browser back since it's name-matched.\n- **Suspense reveals** — on both the home grid and the detail info, the skeleton fallback is wrapped in `` and the content in ``, with asymmetric timing (fast 150ms exit, gentler 210ms delayed enter) so the skeleton hands off to the real content instead of popping.\n- **Reduced motion** — a `prefers-reduced-motion: reduce` block in `app/globals.css` zeroes all view-transition animation durations and delays, so content swaps instantly (the browser default) for users with motion sensitivity.\n\nOne note: I added a root `react-canary.d.ts` with `/// ` — `ViewTransition` ships in `@types/react`'s canary types, so this is required for the type-check to pass (verified clean with `tsc --noEmit`)."}],"model":"claude-fable-5","stop_reason":"end_turn","stop_sequence":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":243,"cache_read_input_tokens":61958,"output_tokens":990,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":0,"ephemeral_5m_input_tokens":243},"inference_geo":"","iterations":[],"speed":"standard"},"stop_details":null},"type":"assistant","uuid":"e307b069-cccd-458a-8b9e-48749ad1f906","timestamp":"2026-06-09T23:47:42.217Z","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"96837b0f-635a-41cf-a96a-afcd7545d5be","version":"2.1.170","gitBranch":"master"}
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diff --git a/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-043-view-transitions/run-1/transcript.json b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-043-view-transitions/run-1/transcript.json
new file mode 100644
index 000000000..0b5e5383c
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-043-view-transitions/run-1/transcript.json
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+ "result": "1\t---\n2\ttitle: Designing view transitions\n3\tdescription: Learn how to use view transitions to communicate meaning during navigation, loading, and content changes in a Next.js app.\n4\tnav_title: View transitions\n5\t---\n6\t\n7\tIn web apps, route changes replace the entire page at once. One set of elements disappears, another appears, with no visual connection between them. A user selects a photo thumbnail to view it in detail on another page. They are the same image, but nothing on screen communicates that.\n8\t\n9\tApps that need these transitions typically rely on complex animation libraries that manage mount/unmount lifecycles, track element positions across routes, and coordinate timing manually, to animate how elements enter, exit, and move between states.\n10\t\n11\tReact's `` component integrates with the browser's [View Transitions API](https://developer.mozilla.org/en-US/docs/Web/API/View_Transition_API) to handle this declaratively. You name the elements that should persist, and the browser animates between their old and new positions.\n12\t\n13\tThis guide walks through four patterns that cover the most common cases: morphing shared elements, animating loading states, adding directional navigation, and crossfading content within the same route.\n14\t\n15\t## Example\n16\t\n17\tAs an example, we'll build a photography gallery called _Frames_.\n18\t\n19\tWe'll start by morphing a thumbnail into a hero image (shared elements), then animate the loading skeleton into real content (Suspense reveals), add directional slides for forward and back navigation (route transitions), and finish with crossfades for switching between photographer tabs (same-route transitions).\n20\t\n21\tYou can find the resources used in this example here:\n22\t\n23\t- [Demo](https://react-view-transitions-demo.labs.vercel.dev)\n24\t- [Code](https://github.com/vercel-labs/react-view-transitions-demo)\n25\t\n26\tBefore starting, enable view transitions in your Next.js config:\n27\t\n28\t```ts filename=\"next.config.ts\"\n29\timport type { NextConfig } from 'next'\n30\t\n31\tconst nextConfig: NextConfig = {\n32\t experimental: {\n33\t viewTransition: true,\n34\t },\n35\t}\n36\t\n37\texport default nextConfig\n38\t```\n39\t\n40\tApp Router uses [React canary releases](https://react.dev/blog/2023/05/03/react-canaries), which contain all stable React 19 changes as well as newer features like `ViewTransition`. You do not need to install `react@canary` yourself.\n41\t\n42\t> [!NOTE]\n43\t> The View Transitions API is supported in all major browsers, though some animations may behave differently in Safari. Without browser support, your application works normally, the transitions simply do not animate.\n44\t\n45\tThen import the `ViewTransition` component from React:\n46\t\n47\t```tsx\n48\timport { ViewTransition } from 'react'\n49\t```\n50\t\n51\t`` animations are activated by [Transitions](https://react.dev/reference/react/useTransition), [``](https://react.dev/reference/react/Suspense), and [`useDeferredValue`](https://react.dev/reference/react/useDeferredValue). Regular `setState` calls do not trigger them. In Next.js, route navigations are transitions, so `` animations activate automatically during navigation.\n52\t\n53\t### Step 1: Morph a thumbnail into a hero image\n54\t\n55\tThe gallery displays photos in a grid. Clicking a photo opens a detail page with a larger version of the same image. Without transitions, the thumbnail disappears and the hero appears. Nothing connects them visually. The user has to scan the detail page to confirm they clicked the right photo.\n56\t\n57\tIn motion design, when an object persists across a cut, it communicates continuity. The viewer understands they are looking at the same thing, not a replacement. This is the most important transition pattern: **shared element morphing**.\n58\t\n59\tWrap both the grid thumbnail and the detail hero in `` with the same `name`:\n60\t\n61\t```tsx filename=\"components/photo-grid.tsx\"\n62\timport { ViewTransition } from 'react'\n63\timport Image from 'next/image'\n64\timport Link from 'next/link'\n65\t\n66\tfunction PhotoGrid({ photos }) {\n67\t return (\n68\t \n69\t {photos.map((photo) => (\n70\t \n71\t \n72\t \n73\t \n74\t \n75\t ))}\n76\t
\n77\t )\n78\t}\n79\t```\n80\t\n81\t```tsx filename=\"app/photo/[id]/photo-content.tsx\"\n82\timport { ViewTransition } from 'react'\n83\timport Image from 'next/image'\n84\t\n85\tasync function PhotoContent({ id }) {\n86\t const photo = await getPhoto(id)\n87\t\n88\t return (\n89\t \n90\t \n91\t \n92\t )\n93\t}\n94\t```\n95\t\n96\tThe `name` prop creates identity. React finds elements with the same name on the old and new pages, then animates between their size and position automatically. No additional props are needed for the morph to work.\n97\t\n98\tIf we click a thumbnail now, the image scales and repositions from its grid cell to the hero slot. Navigating back reverses the morph. The user sees one object moving, not two objects swapping.\n99\t\n100\t#### Customizing the morph animation\n101\t\n102\tThe morph works without any CSS. To customize it, add `share=\"morph\"`. This assigns the `morph` class to the view transition, which you can target with CSS pseudo-elements. For example, to soften the morph mid-flight with a [`blur`](https://developer.mozilla.org/en-US/docs/Web/CSS/filter-function/blur) keyframe:\n103\t\n104\t```tsx\n105\t\n106\t \n107\t \n108\t```\n109\t\n110\t```css filename=\"app/globals.css\"\n111\t::view-transition-group(.morph) {\n112\t animation-duration: 400ms;\n113\t}\n114\t::view-transition-image-pair(.morph) {\n115\t animation-name: via-blur;\n116\t}\n117\t@keyframes via-blur {\n118\t 30% {\n119\t filter: blur(3px);\n120\t }\n121\t}\n122\t```\n123\t\n124\tThe blur hides pixel-level interpolation artifacts during the transition. At 400ms, the morph is slow enough to register but fast enough to feel direct.\n125\t\n126\t### Step 2: Animate loading states with Suspense reveals\n127\t\n128\tThe photo detail page loads its content asynchronously. While data is in flight, a Suspense boundary shows a skeleton. When the data resolves, the skeleton is replaced by the real content.\n129\t\n130\tWithout a transition, the swap is instant. The skeleton vanishes and the content pops in.\n131\t\n132\tIn motion design, vertical direction encodes hierarchy. Content sliding up communicates arrival. Content sliding down communicates departure. The pair together creates a handoff: the placeholder yields to the real thing.\n133\t\n134\tWrap the Suspense fallback in a `ViewTransition` with an exit animation, and the content in a `ViewTransition` with an enter animation:\n135\t\n136\t```tsx filename=\"app/photo/[id]/page.tsx\"\n137\timport { Suspense, ViewTransition } from 'react'\n138\t\n139\texport default async function PhotoPage({ params }) {\n140\t const { id } = await params\n141\t\n142\t return (\n143\t \n146\t \n147\t \n148\t }\n149\t >\n150\t \n151\t \n152\t \n153\t \n154\t )\n155\t}\n156\t```\n157\t\n158\tThe `default=\"none\"` prop prevents this `ViewTransition` from animating during unrelated transitions, like the shared element morph from Step 1. Without it, every transition on the page would trigger every `ViewTransition`'s animation.\n159\t\n160\tThe CSS animations use asymmetric timing. The exit is fast (150ms). The enter is slower (210ms) and delayed until the exit completes:\n161\t\n162\t```css filename=\"app/globals.css\"\n163\t:root {\n164\t --duration-exit: 150ms;\n165\t --duration-enter: 210ms;\n166\t}\n167\t\n168\t::view-transition-old(.slide-down) {\n169\t animation:\n170\t var(--duration-exit) ease-out both fade reverse,\n171\t var(--duration-exit) ease-out both slide-y reverse;\n172\t}\n173\t::view-transition-new(.slide-up) {\n174\t animation:\n175\t var(--duration-enter) ease-in var(--duration-exit) both fade,\n176\t 400ms ease-in both slide-y;\n177\t}\n178\t\n179\t@keyframes fade {\n180\t from {\n181\t filter: blur(3px);\n182\t opacity: 0;\n183\t }\n184\t to {\n185\t filter: blur(0);\n186\t opacity: 1;\n187\t }\n188\t}\n189\t@keyframes slide-y {\n190\t from {\n191\t transform: translateY(10px);\n192\t }\n193\t to {\n194\t transform: translateY(0);\n195\t }\n196\t}\n197\t```\n198\t\n199\tThe asymmetry is deliberate. Old content should leave quickly so it does not compete for attention. New content should arrive more gently so the user has time to register it. The `var(--duration-exit)` delay on the enter animation means the new content waits for the old content to finish leaving before it appears.\n200\t\n201\tIf we refresh the page, the skeleton slides down and fades out, and a moment later the real content slides up and fades in.\n202\t\n203\t### Step 3: Add directional motion for navigation\n204\t\n205\tThe gallery now has morphing images and animated loading states. But navigating between pages still has no directional signal. Forward and back navigations look identical. The user cannot tell from the animation whether they moved deeper into the app or returned to a previous page.\n206\t\n207\tIn film and animation, horizontal direction encodes spatial position. Moving left means progressing forward (like turning a page in a left-to-right language). Moving right means going back. This convention is so ingrained that violating it feels disorienting.\n208\t\n209\tUse the `transitionTypes` prop on ` ` to tag forward navigations:\n210\t\n211\t```tsx filename=\"components/photo-grid.tsx\"\n212\t \n213\t {/* photo thumbnail */}\n214\t\n215\t```\n216\t\n217\tThe same pattern works for any navigation within the app. For example, previous/next arrows on a photo detail page can use `nav-back` and `nav-forward` to animate in the corresponding direction.\n218\t\n219\tFor links that return the user to a previous page, use `nav-back`:\n220\t\n221\t```tsx filename=\"app/photo/[id]/page.tsx\"\n222\t \n223\t ← Gallery\n224\t\n225\t```\n226\t\n227\tThe transition type is not automatic. You decide which links are \"forward\" and which are \"back\" based on your app's navigation hierarchy.\n228\t\n229\tThen wrap page content in a `ViewTransition` that maps transition types to directional animations:\n230\t\n231\t```tsx filename=\"app/photo/[id]/page.tsx\"\n232\t\n245\t {/* page content */}\n246\t \n247\t```\n248\t\n249\tThe `enter` and `exit` props accept an object keyed by transition type. When a navigation carries the `nav-forward` type, the exit animation slides old content left and the enter animation slides new content in from the right. The `default: \"none\"` ensures that transitions without a type (like initial page loads) produce no animation.\n250\t\n251\tThe CSS for directional slides:\n252\t\n253\t```css filename=\"app/globals.css\"\n254\t::view-transition-old(.nav-forward) {\n255\t --slide-offset: -60px;\n256\t animation:\n257\t 150ms ease-in both fade reverse,\n258\t 400ms ease-in-out both slide reverse;\n259\t}\n260\t::view-transition-new(.nav-forward) {\n261\t --slide-offset: 60px;\n262\t animation:\n263\t 210ms ease-out 150ms both fade,\n264\t 400ms ease-in-out both slide;\n265\t}\n266\t\n267\t::view-transition-old(.nav-back) {\n268\t --slide-offset: 60px;\n269\t animation:\n270\t 150ms ease-in both fade reverse,\n271\t 400ms ease-in-out both slide reverse;\n272\t}\n273\t::view-transition-new(.nav-back) {\n274\t --slide-offset: -60px;\n275\t animation:\n276\t 210ms ease-out 150ms both fade,\n277\t 400ms ease-in-out both slide;\n278\t}\n279\t\n280\t@keyframes slide {\n281\t from {\n282\t translate: var(--slide-offset);\n283\t }\n284\t to {\n285\t translate: 0;\n286\t }\n287\t}\n288\t```\n289\t\n290\tThe 60px offset is enough to communicate direction without making the user track a fast-moving element across the screen.\n291\t\n292\t#### Anchoring the header\n293\t\n294\tDuring directional slides, the header should not move. A sliding header breaks the user's spatial anchor. They need one fixed reference point to understand that the _content_ moved, not the entire viewport.\n295\t\n296\tAssign the header a `viewTransitionName` and suppress its animation in CSS:\n297\t\n298\t```tsx filename=\"components/header.tsx\"\n299\t\n300\t {/* navigation links */}\n301\t \n302\t```\n303\t\n304\t```css filename=\"app/globals.css\"\n305\t::view-transition-group(site-header) {\n306\t animation: none;\n307\t z-index: 100;\n308\t}\n309\t::view-transition-old(site-header) {\n310\t display: none;\n311\t}\n312\t::view-transition-new(site-header) {\n313\t animation: none;\n314\t}\n315\t```\n316\t\n317\tThe `display: none` on the old snapshot prevents a flash where both old and new headers are briefly visible. The `z-index: 100` ensures the header renders above the sliding content.\n318\t\n319\tIf we navigate forward to a photo, content slides left. If we click the \"← Gallery\" link (tagged with `nav-back`), content slides right. The header stays fixed throughout both transitions.\n320\t\n321\tBrowser-initiated back navigations (the back button or swipe gestures) do not carry a transition type, so the directional slide does not play. The shared element morph from Step 1 still applies if both pages have matching `name` props.\n322\t\n323\t#### Respecting reduced motion\n324\t\n325\tDirectional slides simulate physical movement across the viewport. This is the most common trigger for motion sensitivity. Morphs, reveals, and crossfades carry less risk since they affect smaller areas or rely on opacity rather than position.\n326\t\n327\tThe simplest approach is to disable all animation durations:\n328\t\n329\t```css filename=\"app/globals.css\"\n330\t@media (prefers-reduced-motion: reduce) {\n331\t ::view-transition-old(*),\n332\t ::view-transition-new(*),\n333\t ::view-transition-group(*) {\n334\t animation-duration: 0s !important;\n335\t animation-delay: 0s !important;\n336\t }\n337\t}\n338\t```\n339\t\n340\tWithout animation, content swaps instantly, which is the browser's default behavior. A more refined approach would preserve crossfades and opacity transitions while removing positional movement. See [\"No Motion Isn't Always prefers-reduced-motion\"](https://css-tricks.com/nuking-motion-with-prefers-reduced-motion/) for more on this.\n341\t\n342\t### Step 4: Crossfade content within the same route\n343\t\n344\tThe gallery has a photographer section with tabs. Each tab shows a different photographer's photos, but the route structure is the same: `/collection/[slug]`. Clicking between tabs does not feel like navigating to a new page. It feels like switching content within the same container.\n345\t\n346\tA directional slide would be wrong here. Slides communicate \"going to a new place.\" A crossfade communicates \"same place, different content.\" The container persists (continuity), only the grid inside changes (swap).\n347\t\n348\tUse a `ViewTransition` with `key` set to the current slug. When the key changes, React triggers a transition between the old and new content:\n349\t\n350\t```tsx filename=\"app/collection/[slug]/page.tsx\"\n351\timport { Suspense, ViewTransition } from 'react'\n352\t\n353\texport default async function CollectionPage({ params }) {\n354\t const { slug } = await params\n355\t\n356\t return (\n357\t }>\n358\t \n365\t \n366\t \n367\t \n368\t )\n369\t}\n370\t```\n371\t\n372\tThe `share=\"auto\"` and `enter=\"auto\"` props tell React to use its default crossfade animation. The `name` prop gives the container an identity so React knows what to animate. The `key={slug}` change is what triggers the transition.\n373\t\n374\tIf we click between photographer tabs, the grid crossfades. The tab bar and surrounding layout do not move. Only the photo grid transitions between states.\n375\t\n376\t## Next steps\n377\t\n378\tYou now know how to use view transitions to communicate meaning during navigation. Shared elements communicate continuity across routes. Suspense reveals animate loading handoffs. Directional slides encode navigation history. Crossfades signal content changes within the same location.\n379\t\n380\tEach pattern answers a different question for the user:\n381\t\n382\t| Pattern | What it communicates |\n383\t| ---------------------- | ------------------------------- |\n384\t| Shared element (morph) | \"Same thing, going deeper\" |\n385\t| Suspense reveal | \"Data loaded\" |\n386\t| Directional slide | \"Going forward / coming back\" |\n387\t| Same-route crossfade | \"Same place, different content\" |\n388\t\n389\tFor API details and more patterns:\n390\t\n391\t- [View transition configuration](/docs/app/api-reference/config/next-config-js/viewTransition)\n392\t- [Link `transitionTypes` prop](/docs/app/api-reference/components/link#transitiontypes)\n393\t- [`useRouter`](/docs/app/api-reference/functions/use-router), which also supports `transitionTypes` in `push()` and `replace()`\n394\t- [React `ViewTransition` component](https://react.dev/reference/react/ViewTransition)\n395\t- [Complete CSS from this guide](https://github.com/vercel-labs/react-view-transitions-demo/blob/main/src/app/globals.css) — all keyframes and view transition rules in one file\n396\t",
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+ "content": "1\t---\n2\ttitle: Designing view transitions\n3\tdescription: Learn how to use view transitions to communicate meaning during navigation, loading, and content changes in a Next.js app.\n4\tnav_title: View transitions\n5\t---\n6\t\n7\tIn web apps, route changes replace the entire page at once. One set of elements disappears, another appears, with no visual connection between them. A user selects a photo thumbnail to view it in detail on another page. They are the same image, but nothing on screen communicates that.\n8\t\n9\tApps that need these transitions typically rely on complex animation libraries that manage mount/unmount lifecycles, track element positions across routes, and coordinate timing manually, to animate how elements enter, exit, and move between states.\n10\t\n11\tReact's `` component integrates with the browser's [View Transitions API](https://developer.mozilla.org/en-US/docs/Web/API/View_Transition_API) to handle this declaratively. You name the elements that should persist, and the browser animates between their old and new positions.\n12\t\n13\tThis guide walks through four patterns that cover the most common cases: morphing shared elements, animating loading states, adding directional navigation, and crossfading content within the same route.\n14\t\n15\t## Example\n16\t\n17\tAs an example, we'll build a photography gallery called _Frames_.\n18\t\n19\tWe'll start by morphing a thumbnail into a hero image (shared elements), then animate the loading skeleton into real content (Suspense reveals), add directional slides for forward and back navigation (route transitions), and finish with crossfades for switching between photographer tabs (same-route transitions).\n20\t\n21\tYou can find the resources used in this example here:\n22\t\n23\t- [Demo](https://react-view-transitions-demo.labs.vercel.dev)\n24\t- [Code](https://github.com/vercel-labs/react-view-transitions-demo)\n25\t\n26\tBefore starting, enable view transitions in your Next.js config:\n27\t\n28\t```ts filename=\"next.config.ts\"\n29\timport type { NextConfig } from 'next'\n30\t\n31\tconst nextConfig: NextConfig = {\n32\t experimental: {\n33\t viewTransition: true,\n34\t },\n35\t}\n36\t\n37\texport default nextConfig\n38\t```\n39\t\n40\tApp Router uses [React canary releases](https://react.dev/blog/2023/05/03/react-canaries), which contain all stable React 19 changes as well as newer features like `ViewTransition`. You do not need to install `react@canary` yourself.\n41\t\n42\t> [!NOTE]\n43\t> The View Transitions API is supported in all major browsers, though some animations may behave differently in Safari. Without browser support, your application works normally, the transitions simply do not animate.\n44\t\n45\tThen import the `ViewTransition` component from React:\n46\t\n47\t```tsx\n48\timport { ViewTransition } from 'react'\n49\t```\n50\t\n51\t`` animations are activated by [Transitions](https://react.dev/reference/react/useTransition), [``](https://react.dev/reference/react/Suspense), and [`useDeferredValue`](https://react.dev/reference/react/useDeferredValue). Regular `setState` calls do not trigger them. In Next.js, route navigations are transitions, so `` animations activate automatically during navigation.\n52\t\n53\t### Step 1: Morph a thumbnail into a hero image\n54\t\n55\tThe gallery displays photos in a grid. Clicking a photo opens a detail page with a larger version of the same image. Without transitions, the thumbnail disappears and the hero appears. Nothing connects them visually. The user has to scan the detail page to confirm they clicked the right photo.\n56\t\n57\tIn motion design, when an object persists across a cut, it communicates continuity. The viewer understands they are looking at the same thing, not a replacement. This is the most important transition pattern: **shared element morphing**.\n58\t\n59\tWrap both the grid thumbnail and the detail hero in `` with the same `name`:\n60\t\n61\t```tsx filename=\"components/photo-grid.tsx\"\n62\timport { ViewTransition } from 'react'\n63\timport Image from 'next/image'\n64\timport Link from 'next/link'\n65\t\n66\tfunction PhotoGrid({ photos }) {\n67\t return (\n68\t \n69\t {photos.map((photo) => (\n70\t \n71\t \n72\t \n73\t \n74\t \n75\t ))}\n76\t
\n77\t )\n78\t}\n79\t```\n80\t\n81\t```tsx filename=\"app/photo/[id]/photo-content.tsx\"\n82\timport { ViewTransition } from 'react'\n83\timport Image from 'next/image'\n84\t\n85\tasync function PhotoContent({ id }) {\n86\t const photo = await getPhoto(id)\n87\t\n88\t return (\n89\t \n90\t \n91\t \n92\t )\n93\t}\n94\t```\n95\t\n96\tThe `name` prop creates identity. React finds elements with the same name on the old and new pages, then animates between their size and position automatically. No additional props are needed for the morph to work.\n97\t\n98\tIf we click a thumbnail now, the image scales and repositions from its grid cell to the hero slot. Navigating back reverses the morph. The user sees one object moving, not two objects swapping.\n99\t\n100\t#### Customizing the morph animation\n101\t\n102\tThe morph works without any CSS. To customize it, add `share=\"morph\"`. This assigns the `morph` class to the view transition, which you can target with CSS pseudo-elements. For example, to soften the morph mid-flight with a [`blur`](https://developer.mozilla.org/en-US/docs/Web/CSS/filter-function/blur) keyframe:\n103\t\n104\t```tsx\n105\t\n106\t \n107\t \n108\t```\n109\t\n110\t```css filename=\"app/globals.css\"\n111\t::view-transition-group(.morph) {\n112\t animation-duration: 400ms;\n113\t}\n114\t::view-transition-image-pair(.morph) {\n115\t animation-name: via-blur;\n116\t}\n117\t@keyframes via-blur {\n118\t 30% {\n119\t filter: blur(3px);\n120\t }\n121\t}\n122\t```\n123\t\n124\tThe blur hides pixel-level interpolation artifacts during the transition. At 400ms, the morph is slow enough to register but fast enough to feel direct.\n125\t\n126\t### Step 2: Animate loading states with Suspense reveals\n127\t\n128\tThe photo detail page loads its content asynchronously. While data is in flight, a Suspense boundary shows a skeleton. When the data resolves, the skeleton is replaced by the real content.\n129\t\n130\tWithout a transition, the swap is instant. The skeleton vanishes and the content pops in.\n131\t\n132\tIn motion design, vertical direction encodes hierarchy. Content sliding up communicates arrival. Content sliding down communicates departure. The pair together creates a handoff: the placeholder yields to the real thing.\n133\t\n134\tWrap the Suspense fallback in a `ViewTransition` with an exit animation, and the content in a `ViewTransition` with an enter animation:\n135\t\n136\t```tsx filename=\"app/photo/[id]/page.tsx\"\n137\timport { Suspense, ViewTransition } from 'react'\n138\t\n139\texport default async function PhotoPage({ params }) {\n140\t const { id } = await params\n141\t\n142\t return (\n143\t \n146\t \n147\t \n148\t }\n149\t >\n150\t \n151\t \n152\t \n153\t \n154\t )\n155\t}\n156\t```\n157\t\n158\tThe `default=\"none\"` prop prevents this `ViewTransition` from animating during unrelated transitions, like the shared element morph from Step 1. Without it, every transition on the page would trigger every `ViewTransition`'s animation.\n159\t\n160\tThe CSS animations use asymmetric timing. The exit is fast (150ms). The enter is slower (210ms) and delayed until the exit completes:\n161\t\n162\t```css filename=\"app/globals.css\"\n163\t:root {\n164\t --duration-exit: 150ms;\n165\t --duration-enter: 210ms;\n166\t}\n167\t\n168\t::view-transition-old(.slide-down) {\n169\t animation:\n170\t var(--duration-exit) ease-out both fade reverse,\n171\t var(--duration-exit) ease-out both slide-y reverse;\n172\t}\n173\t::view-transition-new(.slide-up) {\n174\t animation:\n175\t var(--duration-enter) ease-in var(--duration-exit) both fade,\n176\t 400ms ease-in both slide-y;\n177\t}\n178\t\n179\t@keyframes fade {\n180\t from {\n181\t filter: blur(3px);\n182\t opacity: 0;\n183\t }\n184\t to {\n185\t filter: blur(0);\n186\t opacity: 1;\n187\t }\n188\t}\n189\t@keyframes slide-y {\n190\t from {\n191\t transform: translateY(10px);\n192\t }\n193\t to {\n194\t transform: translateY(0);\n195\t }\n196\t}\n197\t```\n198\t\n199\tThe asymmetry is deliberate. Old content should leave quickly so it does not compete for attention. New content should arrive more gently so the user has time to register it. The `var(--duration-exit)` delay on the enter animation means the new content waits for the old content to finish leaving before it appears.\n200\t\n201\tIf we refresh the page, the skeleton slides down and fades out, and a moment later the real content slides up and fades in.\n202\t\n203\t### Step 3: Add directional motion for navigation\n204\t\n205\tThe gallery now has morphing images and animated loading states. But navigating between pages still has no directional signal. Forward and back navigations look identical. The user cannot tell from the animation whether they moved deeper into the app or returned to a previous page.\n206\t\n207\tIn film and animation, horizontal direction encodes spatial position. Moving left means progressing forward (like turning a page in a left-to-right language). Moving right means going back. This convention is so ingrained that violating it feels disorienting.\n208\t\n209\tUse the `transitionTypes` prop on ` ` to tag forward navigations:\n210\t\n211\t```tsx filename=\"components/photo-grid.tsx\"\n212\t \n213\t {/* photo thumbnail */}\n214\t\n215\t```\n216\t\n217\tThe same pattern works for any navigation within the app. For example, previous/next arrows on a photo detail page can use `nav-back` and `nav-forward` to animate in the corresponding direction.\n218\t\n219\tFor links that return the user to a previous page, use `nav-back`:\n220\t\n221\t```tsx filename=\"app/photo/[id]/page.tsx\"\n222\t \n223\t ← Gallery\n224\t\n225\t```\n226\t\n227\tThe transition type is not automatic. You decide which links are \"forward\" and which are \"back\" based on your app's navigation hierarchy.\n228\t\n229\tThen wrap page content in a `ViewTransition` that maps transition types to directional animations:\n230\t\n231\t```tsx filename=\"app/photo/[id]/page.tsx\"\n232\t\n245\t {/* page content */}\n246\t \n247\t```\n248\t\n249\tThe `enter` and `exit` props accept an object keyed by transition type. When a navigation carries the `nav-forward` type, the exit animation slides old content left and the enter animation slides new content in from the right. The `default: \"none\"` ensures that transitions without a type (like initial page loads) produce no animation.\n250\t\n251\tThe CSS for directional slides:\n252\t\n253\t```css filename=\"app/globals.css\"\n254\t::view-transition-old(.nav-forward) {\n255\t --slide-offset: -60px;\n256\t animation:\n257\t 150ms ease-in both fade reverse,\n258\t 400ms ease-in-out both slide reverse;\n259\t}\n260\t::view-transition-new(.nav-forward) {\n261\t --slide-offset: 60px;\n262\t animation:\n263\t 210ms ease-out 150ms both fade,\n264\t 400ms ease-in-out both slide;\n265\t}\n266\t\n267\t::view-transition-old(.nav-back) {\n268\t --slide-offset: 60px;\n269\t animation:\n270\t 150ms ease-in both fade reverse,\n271\t 400ms ease-in-out both slide reverse;\n272\t}\n273\t::view-transition-new(.nav-back) {\n274\t --slide-offset: -60px;\n275\t animation:\n276\t 210ms ease-out 150ms both fade,\n277\t 400ms ease-in-out both slide;\n278\t}\n279\t\n280\t@keyframes slide {\n281\t from {\n282\t translate: var(--slide-offset);\n283\t }\n284\t to {\n285\t translate: 0;\n286\t }\n287\t}\n288\t```\n289\t\n290\tThe 60px offset is enough to communicate direction without making the user track a fast-moving element across the screen.\n291\t\n292\t#### Anchoring the header\n293\t\n294\tDuring directional slides, the header should not move. A sliding header breaks the user's spatial anchor. They need one fixed reference point to understand that the _content_ moved, not the entire viewport.\n295\t\n296\tAssign the header a `viewTransitionName` and suppress its animation in CSS:\n297\t\n298\t```tsx filename=\"components/header.tsx\"\n299\t\n300\t {/* navigation links */}\n301\t \n302\t```\n303\t\n304\t```css filename=\"app/globals.css\"\n305\t::view-transition-group(site-header) {\n306\t animation: none;\n307\t z-index: 100;\n308\t}\n309\t::view-transition-old(site-header) {\n310\t display: none;\n311\t}\n312\t::view-transition-new(site-header) {\n313\t animation: none;\n314\t}\n315\t```\n316\t\n317\tThe `display: none` on the old snapshot prevents a flash where both old and new headers are briefly visible. The `z-index: 100` ensures the header renders above the sliding content.\n318\t\n319\tIf we navigate forward to a photo, content slides left. If we click the \"← Gallery\" link (tagged with `nav-back`), content slides right. The header stays fixed throughout both transitions.\n320\t\n321\tBrowser-initiated back navigations (the back button or swipe gestures) do not carry a transition type, so the directional slide does not play. The shared element morph from Step 1 still applies if both pages have matching `name` props.\n322\t\n323\t#### Respecting reduced motion\n324\t\n325\tDirectional slides simulate physical movement across the viewport. This is the most common trigger for motion sensitivity. Morphs, reveals, and crossfades carry less risk since they affect smaller areas or rely on opacity rather than position.\n326\t\n327\tThe simplest approach is to disable all animation durations:\n328\t\n329\t```css filename=\"app/globals.css\"\n330\t@media (prefers-reduced-motion: reduce) {\n331\t ::view-transition-old(*),\n332\t ::view-transition-new(*),\n333\t ::view-transition-group(*) {\n334\t animation-duration: 0s !important;\n335\t animation-delay: 0s !important;\n336\t }\n337\t}\n338\t```\n339\t\n340\tWithout animation, content swaps instantly, which is the browser's default behavior. A more refined approach would preserve crossfades and opacity transitions while removing positional movement. See [\"No Motion Isn't Always prefers-reduced-motion\"](https://css-tricks.com/nuking-motion-with-prefers-reduced-motion/) for more on this.\n341\t\n342\t### Step 4: Crossfade content within the same route\n343\t\n344\tThe gallery has a photographer section with tabs. Each tab shows a different photographer's photos, but the route structure is the same: `/collection/[slug]`. Clicking between tabs does not feel like navigating to a new page. It feels like switching content within the same container.\n345\t\n346\tA directional slide would be wrong here. Slides communicate \"going to a new place.\" A crossfade communicates \"same place, different content.\" The container persists (continuity), only the grid inside changes (swap).\n347\t\n348\tUse a `ViewTransition` with `key` set to the current slug. When the key changes, React triggers a transition between the old and new content:\n349\t\n350\t```tsx filename=\"app/collection/[slug]/page.tsx\"\n351\timport { Suspense, ViewTransition } from 'react'\n352\t\n353\texport default async function CollectionPage({ params }) {\n354\t const { slug } = await params\n355\t\n356\t return (\n357\t }>\n358\t \n365\t \n366\t \n367\t \n368\t )\n369\t}\n370\t```\n371\t\n372\tThe `share=\"auto\"` and `enter=\"auto\"` props tell React to use its default crossfade animation. The `name` prop gives the container an identity so React knows what to animate. The `key={slug}` change is what triggers the transition.\n373\t\n374\tIf we click between photographer tabs, the grid crossfades. The tab bar and surrounding layout do not move. Only the photo grid transitions between states.\n375\t\n376\t## Next steps\n377\t\n378\tYou now know how to use view transitions to communicate meaning during navigation. Shared elements communicate continuity across routes. Suspense reveals animate loading handoffs. Directional slides encode navigation history. Crossfades signal content changes within the same location.\n379\t\n380\tEach pattern answers a different question for the user:\n381\t\n382\t| Pattern | What it communicates |\n383\t| ---------------------- | ------------------------------- |\n384\t| Shared element (morph) | \"Same thing, going deeper\" |\n385\t| Suspense reveal | \"Data loaded\" |\n386\t| Directional slide | \"Going forward / coming back\" |\n387\t| Same-route crossfade | \"Same place, different content\" |\n388\t\n389\tFor API details and more patterns:\n390\t\n391\t- [View transition configuration](/docs/app/api-reference/config/next-config-js/viewTransition)\n392\t- [Link `transitionTypes` prop](/docs/app/api-reference/components/link#transitiontypes)\n393\t- [`useRouter`](/docs/app/api-reference/functions/use-router), which also supports `transitionTypes` in `push()` and `replace()`\n394\t- [React `ViewTransition` component](https://react.dev/reference/react/ViewTransition)\n395\t- [Complete CSS from this guide](https://github.com/vercel-labs/react-view-transitions-demo/blob/main/src/app/globals.css) — all keyframes and view transition rules in one file\n396\t"
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+ "result": "1\t---\n2\ttitle: viewTransition\n3\tdescription: Enable ViewTransition API from React in App Router\n4\tversion: experimental\n5\t---\n6\t\n7\t`viewTransition` enables React's [View Transitions API](https://developer.mozilla.org/en-US/docs/Web/API/View_Transition_API) integration in Next.js. This lets you animate navigations, loading states, and content changes using the native browser View Transitions API.\n8\t\n9\tTo enable this feature, you need to set the `viewTransition` property to `true` in your `next.config.js` file.\n10\t\n11\t```js filename=\"next.config.js\"\n12\t/** @type {import('next').NextConfig} */\n13\tconst nextConfig = {\n14\t experimental: {\n15\t viewTransition: true,\n16\t },\n17\t}\n18\t\n19\tmodule.exports = nextConfig\n20\t```\n21\t\n22\t> [!NOTE]\n23\t> The [``](https://react.dev/reference/react/ViewTransition) component is provided by React.\n24\t> The `experimental.viewTransition` flag enables Next.js integration, such as triggering\n25\t> transitions during route navigations.\n26\t\n27\t## Usage\n28\t\n29\tYou can import the [`` Component](https://react.dev/reference/react/ViewTransition) from React in your application:\n30\t\n31\t```jsx\n32\timport { ViewTransition } from 'react'\n33\t```\n34\t\n35\t### Live Demo\n36\t\n37\tCheck out the [View Transitions Demo](https://react-view-transitions-demo.labs.vercel.dev) to see this feature in action, or read the [designing view transitions guide](/docs/app/guides/view-transitions) for a step-by-step walkthrough.\n38\t\n39\tThe View Transitions API is a baseline web standard, and browser support continues to expand. As React's [``](https://react.dev/reference/react/ViewTransition) component evolves, more transition patterns and use cases will become available.\n40\t",
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+ "content": "1\t---\n2\ttitle: viewTransition\n3\tdescription: Enable ViewTransition API from React in App Router\n4\tversion: experimental\n5\t---\n6\t\n7\t`viewTransition` enables React's [View Transitions API](https://developer.mozilla.org/en-US/docs/Web/API/View_Transition_API) integration in Next.js. This lets you animate navigations, loading states, and content changes using the native browser View Transitions API.\n8\t\n9\tTo enable this feature, you need to set the `viewTransition` property to `true` in your `next.config.js` file.\n10\t\n11\t```js filename=\"next.config.js\"\n12\t/** @type {import('next').NextConfig} */\n13\tconst nextConfig = {\n14\t experimental: {\n15\t viewTransition: true,\n16\t },\n17\t}\n18\t\n19\tmodule.exports = nextConfig\n20\t```\n21\t\n22\t> [!NOTE]\n23\t> The [``](https://react.dev/reference/react/ViewTransition) component is provided by React.\n24\t> The `experimental.viewTransition` flag enables Next.js integration, such as triggering\n25\t> transitions during route navigations.\n26\t\n27\t## Usage\n28\t\n29\tYou can import the [`` Component](https://react.dev/reference/react/ViewTransition) from React in your application:\n30\t\n31\t```jsx\n32\timport { ViewTransition } from 'react'\n33\t```\n34\t\n35\t### Live Demo\n36\t\n37\tCheck out the [View Transitions Demo](https://react-view-transitions-demo.labs.vercel.dev) to see this feature in action, or read the [designing view transitions guide](/docs/app/guides/view-transitions) for a step-by-step walkthrough.\n38\t\n39\tThe View Transitions API is a baseline web standard, and browser support continues to expand. As React's [``](https://react.dev/reference/react/ViewTransition) component evolves, more transition patterns and use cases will become available.\n40\t"
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+ "content": "import { ViewTransition } from 'react'\nimport { notFound } from 'next/navigation'\nimport { getProduct } from '@/lib/products'\n\nexport async function ProductDetail({ slug }: { slug: string }) {\n const product = getProduct(slug)\n\n if (!product) {\n notFound()\n }\n\n return (\n \n
\n
\n \n
\n
{product.name} \n
${product.price}
\n
{product.description}
\n
\n
\n )\n}\n"
+ }
+ }
+ },
+ {
+ "timestamp": "2026-06-09T23:46:09.885Z",
+ "type": "tool_result",
+ "tool": {
+ "name": "unknown",
+ "originalName": "toolu_01RzzRkM1s1g6Qj3k3w3kmnC",
+ "result": "File created successfully at: /workspace/app/product/[slug]/ProductDetail.tsx (file state is current in your context — no need to Read it back)",
+ "success": true
+ },
+ "raw": {
+ "tool_use_id": "toolu_01RzzRkM1s1g6Qj3k3w3kmnC",
+ "type": "tool_result",
+ "content": "File created successfully at: /workspace/app/product/[slug]/ProductDetail.tsx (file state is current in your context — no need to Read it back)"
+ }
+ },
+ {
+ "timestamp": "2026-06-09T23:46:11.040Z",
+ "type": "tool_call",
+ "tool": {
+ "name": "file_write",
+ "originalName": "Write",
+ "args": {
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+ }
+ },
+ "raw": {
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+ }
+ }
+ },
+ {
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+ }
+ },
+ {
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+ "type": "tool_call",
+ "tool": {
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+ "args": {
+ "command": "ls -la /workspace/app/product/ /workspace/app/product/*/ 2>/dev/null",
+ "description": "Check existing product route directory",
+ "_extractedCommand": "ls -la /workspace/app/product/ /workspace/app/product/*/ 2>/dev/null"
+ }
+ },
+ "raw": {
+ "name": "Bash",
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+ "description": "Check existing product route directory"
+ }
+ }
+ },
+ {
+ "timestamp": "2026-06-09T23:46:15.792Z",
+ "type": "tool_result",
+ "tool": {
+ "name": "unknown",
+ "originalName": "toolu_01E7Nm1bwAfQki3unutTZLU9",
+ "result": "/workspace/app/product/:\ntotal 0\ndrwxr-xr-x 3 vercel-sandbox vercel-sandbox 20 Jun 9 23:43 .\ndrwxr-xr-x 3 vercel-sandbox vercel-sandbox 150 Jun 9 23:46 ..\ndrwxr-xr-x 2 vercel-sandbox vercel-sandbox 80 Jun 9 23:46 [slug]\n\n/workspace/app/product/[slug]/:\ntotal 12\ndrwxr-xr-x 2 vercel-sandbox vercel-sandbox 80 Jun 9 23:46 .\ndrwxr-xr-x 3 vercel-sandbox vercel-sandbox 20 Jun 9 23:43 ..\n-rw-r--r-- 1 vercel-sandbox vercel-sandbox 753 Jun 9 23:46 ProductDetail.tsx\n-rw-r--r-- 1 vercel-sandbox vercel-sandbox 349 Jun 9 23:46 ProductDetailSkeleton.tsx\n-rw-r--r-- 1 vercel-sandbox vercel-sandbox 1400 Jun 9 23:43 page.tsx",
+ "success": true
+ },
+ "raw": {
+ "tool_use_id": "toolu_01E7Nm1bwAfQki3unutTZLU9",
+ "type": "tool_result",
+ "content": "/workspace/app/product/:\ntotal 0\ndrwxr-xr-x 3 vercel-sandbox vercel-sandbox 20 Jun 9 23:43 .\ndrwxr-xr-x 3 vercel-sandbox vercel-sandbox 150 Jun 9 23:46 ..\ndrwxr-xr-x 2 vercel-sandbox vercel-sandbox 80 Jun 9 23:46 [slug]\n\n/workspace/app/product/[slug]/:\ntotal 12\ndrwxr-xr-x 2 vercel-sandbox vercel-sandbox 80 Jun 9 23:46 .\ndrwxr-xr-x 3 vercel-sandbox vercel-sandbox 20 Jun 9 23:43 ..\n-rw-r--r-- 1 vercel-sandbox vercel-sandbox 753 Jun 9 23:46 ProductDetail.tsx\n-rw-r--r-- 1 vercel-sandbox vercel-sandbox 349 Jun 9 23:46 ProductDetailSkeleton.tsx\n-rw-r--r-- 1 vercel-sandbox vercel-sandbox 1400 Jun 9 23:43 page.tsx",
+ "is_error": false
+ }
+ },
+ {
+ "timestamp": "2026-06-09T23:46:21.603Z",
+ "type": "tool_call",
+ "tool": {
+ "name": "file_read",
+ "originalName": "Read",
+ "args": {
+ "file_path": "/workspace/app/product/[slug]/page.tsx",
+ "_extractedPath": "/workspace/app/product/[slug]/page.tsx"
+ }
+ },
+ "raw": {
+ "name": "Read",
+ "input": {
+ "file_path": "/workspace/app/product/[slug]/page.tsx"
+ }
+ }
+ },
+ {
+ "timestamp": "2026-06-09T23:46:21.606Z",
+ "type": "tool_result",
+ "tool": {
+ "name": "unknown",
+ "originalName": "toolu_01JkT5DsG4fAigv95KoNGtxF",
+ "result": "1\timport { Suspense } from 'react'\n2\timport Link from 'next/link'\n3\timport { getProduct, products } from '@/lib/products'\n4\timport { notFound } from 'next/navigation'\n5\t\n6\tasync function ProductDetails({ slug }: { slug: string }) {\n7\t await new Promise((resolve) => setTimeout(resolve, 100))\n8\t const product = getProduct(slug)\n9\t if (!product) notFound()\n10\t\n11\t return (\n12\t \n13\t
{product.name} \n14\t
${product.price}
\n15\t
{product.description}
\n16\t
\n17\t )\n18\t}\n19\t\n20\tfunction DetailsSkeleton() {\n21\t return (\n22\t \n23\t
\n24\t
\n25\t
\n26\t
\n27\t )\n28\t}\n29\t\n30\texport default async function ProductPage({\n31\t params,\n32\t}: {\n33\t params: Promise<{ slug: string }>\n34\t}) {\n35\t const { slug } = await params\n36\t const product = products.find((p) => p.slug === slug)\n37\t if (!product) notFound()\n38\t\n39\t return (\n40\t \n41\t
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\n45\t
\n49\t
}>\n50\t
\n51\t \n52\t
\n53\t
\n54\t )\n55\t}\n56\t",
+ "success": true
+ },
+ "raw": {
+ "tool_use_id": "toolu_01JkT5DsG4fAigv95KoNGtxF",
+ "type": "tool_result",
+ "content": "1\timport { Suspense } from 'react'\n2\timport Link from 'next/link'\n3\timport { getProduct, products } from '@/lib/products'\n4\timport { notFound } from 'next/navigation'\n5\t\n6\tasync function ProductDetails({ slug }: { slug: string }) {\n7\t await new Promise((resolve) => setTimeout(resolve, 100))\n8\t const product = getProduct(slug)\n9\t if (!product) notFound()\n10\t\n11\t return (\n12\t \n13\t
{product.name} \n14\t
${product.price}
\n15\t
{product.description}
\n16\t
\n17\t )\n18\t}\n19\t\n20\tfunction DetailsSkeleton() {\n21\t return (\n22\t \n23\t
\n24\t
\n25\t
\n26\t
\n27\t )\n28\t}\n29\t\n30\texport default async function ProductPage({\n31\t params,\n32\t}: {\n33\t params: Promise<{ slug: string }>\n34\t}) {\n35\t const { slug } = await params\n36\t const product = products.find((p) => p.slug === slug)\n37\t if (!product) notFound()\n38\t\n39\t return (\n40\t \n41\t
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\n45\t
\n49\t
}>\n50\t
\n51\t \n52\t
\n53\t
\n54\t )\n55\t}\n56\t"
+ }
+ },
+ {
+ "timestamp": "2026-06-09T23:46:32.890Z",
+ "type": "tool_call",
+ "tool": {
+ "name": "shell",
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+ "args": {
+ "command": "rm /workspace/app/product/[slug]/ProductDetail.tsx /workspace/app/product/[slug]/ProductDetailSkeleton.tsx",
+ "description": "Remove redundant components I created",
+ "_extractedCommand": "rm /workspace/app/product/[slug]/ProductDetail.tsx /workspace/app/product/[slug]/ProductDetailSkeleton.tsx"
+ }
+ },
+ "raw": {
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+ "description": "Remove redundant components I created"
+ }
+ }
+ },
+ {
+ "timestamp": "2026-06-09T23:46:32.920Z",
+ "type": "tool_result",
+ "tool": {
+ "name": "unknown",
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+ "result": "(Bash completed with no output)",
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+ },
+ "raw": {
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+ "type": "tool_result",
+ "content": "(Bash completed with no output)",
+ "is_error": false
+ }
+ },
+ {
+ "timestamp": "2026-06-09T23:46:41.287Z",
+ "type": "tool_call",
+ "tool": {
+ "name": "file_write",
+ "originalName": "Write",
+ "args": {
+ "file_path": "/workspace/app/product/[slug]/page.tsx",
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\n ← Back to products\n \n
\n
\n
\n \n
\n \n \n }\n >\n \n \n \n \n
\n
\n \n )\n}\n",
+ "_extractedPath": "/workspace/app/product/[slug]/page.tsx"
+ }
+ },
+ "raw": {
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+ "input": {
+ "file_path": "/workspace/app/product/[slug]/page.tsx",
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{product.name} \n
${product.price}
\n
{product.description}
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\n )\n}\n\nfunction DetailsSkeleton() {\n return (\n \n )\n}\n\nexport default async function ProductPage({\n params,\n}: {\n params: Promise<{ slug: string }>\n}) {\n const { slug } = await params\n const product = products.find((p) => p.slug === slug)\n if (!product) notFound()\n\n return (\n \n \n
\n ← Back to products\n \n
\n
\n
\n \n
\n \n \n }\n >\n \n \n \n \n
\n
\n \n )\n}\n"
+ }
+ }
+ },
+ {
+ "timestamp": "2026-06-09T23:46:41.302Z",
+ "type": "tool_result",
+ "tool": {
+ "name": "unknown",
+ "originalName": "toolu_016a4Z1v1D97xEENdPmTeUm4",
+ "result": "The file /workspace/app/product/[slug]/page.tsx has been updated successfully. (file state is current in your context — no need to Read it back)",
+ "success": true
+ },
+ "raw": {
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+ "type": "tool_result",
+ "content": "The file /workspace/app/product/[slug]/page.tsx has been updated successfully. (file state is current in your context — no need to Read it back)"
+ }
+ },
+ {
+ "timestamp": "2026-06-09T23:46:45.284Z",
+ "type": "message",
+ "role": "assistant",
+ "content": "Now the CSS — morph customization, Suspense reveal animations, directional slides, and the reduced-motion guard:",
+ "raw": {
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+ }
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+ "entrypoint": "sdk-cli",
+ "cwd": "/workspace",
+ "sessionId": "96837b0f-635a-41cf-a96a-afcd7545d5be",
+ "version": "2.1.170",
+ "gitBranch": "master"
+ }
+ },
+ {
+ "timestamp": "2026-06-09T23:46:53.381Z",
+ "type": "tool_call",
+ "tool": {
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+ "replace_all": false,
+ "file_path": "/workspace/app/globals.css",
+ "old_string": "@keyframes pulse {\n 0%,\n 100% {\n opacity: 1;\n }\n 50% {\n opacity: 0.5;\n }\n}",
+ "new_string": "@keyframes pulse {\n 0%,\n 100% {\n opacity: 1;\n }\n 50% {\n opacity: 0.5;\n }\n}\n\n/* --- View transitions --- */\n\n:root {\n --duration-exit: 150ms;\n --duration-enter: 210ms;\n}\n\n/* Shared element morph (grid thumbnail <-> detail hero) */\n::view-transition-group(.morph) {\n animation-duration: 400ms;\n}\n::view-transition-image-pair(.morph) {\n animation-name: via-blur;\n}\n@keyframes via-blur {\n 30% {\n filter: blur(3px);\n }\n}\n\n/* Suspense reveal: skeleton slides down and out, content slides up and in */\n::view-transition-old(.slide-down) {\n animation:\n var(--duration-exit) ease-out both fade reverse,\n var(--duration-exit) ease-out both slide-y reverse;\n}\n::view-transition-new(.slide-up) {\n animation:\n var(--duration-enter) ease-in var(--duration-exit) both fade,\n 400ms ease-in both slide-y;\n}\n\n@keyframes fade {\n from {\n filter: blur(3px);\n opacity: 0;\n }\n to {\n filter: blur(0);\n opacity: 1;\n }\n}\n@keyframes slide-y {\n from {\n transform: translateY(10px);\n }\n to {\n transform: translateY(0);\n }\n}\n\n/* Directional navigation: forward slides left, back slides right */\n::view-transition-old(.nav-forward) {\n --slide-offset: -60px;\n animation:\n 150ms ease-in both fade reverse,\n 400ms ease-in-out both slide reverse;\n}\n::view-transition-new(.nav-forward) {\n --slide-offset: 60px;\n animation:\n 210ms ease-out 150ms both fade,\n 400ms ease-in-out both slide;\n}\n\n::view-transition-old(.nav-back) {\n --slide-offset: 60px;\n animation:\n 150ms ease-in both fade reverse,\n 400ms ease-in-out both slide reverse;\n}\n::view-transition-new(.nav-back) {\n --slide-offset: -60px;\n animation:\n 210ms ease-out 150ms both fade,\n 400ms ease-in-out both slide;\n}\n\n@keyframes slide {\n from {\n translate: var(--slide-offset);\n }\n to {\n translate: 0;\n }\n}\n\n@media (prefers-reduced-motion: reduce) {\n ::view-transition-old(*),\n ::view-transition-new(*),\n ::view-transition-group(*) {\n animation-duration: 0s !important;\n animation-delay: 0s !important;\n }\n}",
+ "_extractedPath": "/workspace/app/globals.css"
+ }
+ },
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+ }
+ }
+ },
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+ "type": "message",
+ "role": "assistant",
+ "content": "Now verify everything compiles and builds:",
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+ }
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+ "tool_use_id": "toolu_01WuFGV1sKGqmMWm4WZqC1WX",
+ "type": "tool_result",
+ "content": "(Bash completed with no output)",
+ "is_error": false
+ }
+ },
+ {
+ "timestamp": "2026-06-09T23:47:04.317Z",
+ "type": "tool_call",
+ "tool": {
+ "name": "shell",
+ "originalName": "Bash",
+ "args": {
+ "command": "npm run build 2>&1 | tail -30",
+ "description": "Build the Next.js app",
+ "timeout": 300000,
+ "_extractedCommand": "npm run build 2>&1 | tail -30"
+ }
+ },
+ "raw": {
+ "name": "Bash",
+ "input": {
+ "command": "npm run build 2>&1 | tail -30",
+ "description": "Build the Next.js app",
+ "timeout": 300000
+ }
+ }
+ },
+ {
+ "timestamp": "2026-06-09T23:47:12.578Z",
+ "type": "tool_result",
+ "tool": {
+ "name": "unknown",
+ "originalName": "toolu_01MYRFaXFGiXEsajwwzGLcbY",
+ "result": "https://nextjs.org/telemetry\n\n▲ Next.js 16.3.0-canary.46 (Turbopack)\n- Experiments (use with caution):\n ✓ viewTransition\n\n Creating an optimized production build ...\n✓ Compiled successfully in 4.3s\n Running TypeScript ...\n\n We detected TypeScript in your project and reconfigured your tsconfig.json file for you.\n The following suggested values were added to your tsconfig.json. These values can be changed to fit your project's needs:\n\n \t- include was updated to add '.next/dev/types/**/*.ts'\n\n Finished TypeScript in 1669ms ...\n Collecting page data using 1 worker ...\n Generating static pages using 1 worker (0/3) ...\n✓ Generating static pages using 1 worker (3/3) in 133ms\n Finalizing page optimization ...\n\nRoute (app)\n┌ ○ /\n├ ○ /_not-found\n└ ƒ /product/[slug]\n\n\n○ (Static) prerendered as static content\nƒ (Dynamic) server-rendered on demand",
+ "success": true
+ },
+ "raw": {
+ "tool_use_id": "toolu_01MYRFaXFGiXEsajwwzGLcbY",
+ "type": "tool_result",
+ "content": "https://nextjs.org/telemetry\n\n▲ Next.js 16.3.0-canary.46 (Turbopack)\n- Experiments (use with caution):\n ✓ viewTransition\n\n Creating an optimized production build ...\n✓ Compiled successfully in 4.3s\n Running TypeScript ...\n\n We detected TypeScript in your project and reconfigured your tsconfig.json file for you.\n The following suggested values were added to your tsconfig.json. These values can be changed to fit your project's needs:\n\n \t- include was updated to add '.next/dev/types/**/*.ts'\n\n Finished TypeScript in 1669ms ...\n Collecting page data using 1 worker ...\n Generating static pages using 1 worker (0/3) ...\n✓ Generating static pages using 1 worker (3/3) in 133ms\n Finalizing page optimization ...\n\nRoute (app)\n┌ ○ /\n├ ○ /_not-found\n└ ƒ /product/[slug]\n\n\n○ (Static) prerendered as static content\nƒ (Dynamic) server-rendered on demand",
+ "is_error": false
+ }
+ },
+ {
+ "timestamp": "2026-06-09T23:47:17.332Z",
+ "type": "message",
+ "role": "assistant",
+ "content": "Build passes with the `viewTransition` experiment enabled. Let me do a quick runtime smoke test to confirm the transitions are actually wired into the rendered output:",
+ "raw": {
+ "parentUuid": "f64b0fd2-ff3a-4409-8fe5-386febac0d2f",
+ "isSidechain": false,
+ "message": {
+ "id": "gen_01KTQCGWKC0860NMRDKFQR285V",
+ "type": "message",
+ "role": "assistant",
+ "content": [
+ {
+ "type": "text",
+ "text": "Build passes with the `viewTransition` experiment enabled. Let me do a quick runtime smoke test to confirm the transitions are actually wired into the rendered output:"
+ }
+ ],
+ "model": "claude-fable-5",
+ "stop_reason": "tool_use",
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+ "usage": {
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+ "cache_creation_input_tokens": 484,
+ "cache_read_input_tokens": 60821,
+ "output_tokens": 361,
+ "server_tool_use": {
+ "web_search_requests": 0,
+ "web_fetch_requests": 0
+ },
+ "service_tier": "standard",
+ "cache_creation": {
+ "ephemeral_1h_input_tokens": 0,
+ "ephemeral_5m_input_tokens": 484
+ },
+ "inference_geo": "",
+ "iterations": [],
+ "speed": "standard"
+ },
+ "stop_details": null
+ },
+ "type": "assistant",
+ "uuid": "cc97e5ef-f9eb-443d-8522-2ec9152cf5f4",
+ "timestamp": "2026-06-09T23:47:17.332Z",
+ "userType": "external",
+ "entrypoint": "sdk-cli",
+ "cwd": "/workspace",
+ "sessionId": "96837b0f-635a-41cf-a96a-afcd7545d5be",
+ "version": "2.1.170",
+ "gitBranch": "master"
+ }
+ },
+ {
+ "timestamp": "2026-06-09T23:47:19.261Z",
+ "type": "tool_call",
+ "tool": {
+ "name": "shell",
+ "originalName": "Bash",
+ "args": {
+ "command": "(npm start &) && sleep 3 && curl -s localhost:3000 | grep -o 'vt-name=\"[^\"]*\"\\|view-transition[^ \"]*' | sort -u | head; echo \"--- detail ---\"; curl -s localhost:3000/product/classic-sneakers | grep -o 'vt-name=\"[^\"]*\"\\|view-transition[^ \"]*' | sort -u | head",
+ "description": "Start server and check rendered HTML for view transition attributes",
+ "timeout": 60000,
+ "_extractedCommand": "(npm start &) && sleep 3 && curl -s localhost:3000 | grep -o 'vt-name=\"[^\"]*\"\\|view-transition[^ \"]*' | sort -u | head; echo \"--- detail ---\"; curl -s localhost:3000/product/classic-sneakers | grep -o 'vt-name=\"[^\"]*\"\\|view-transition[^ \"]*' | sort -u | head"
+ }
+ },
+ "raw": {
+ "name": "Bash",
+ "input": {
+ "command": "(npm start &) && sleep 3 && curl -s localhost:3000 | grep -o 'vt-name=\"[^\"]*\"\\|view-transition[^ \"]*' | sort -u | head; echo \"--- detail ---\"; curl -s localhost:3000/product/classic-sneakers | grep -o 'vt-name=\"[^\"]*\"\\|view-transition[^ \"]*' | sort -u | head",
+ "description": "Start server and check rendered HTML for view transition attributes",
+ "timeout": 60000
+ }
+ }
+ },
+ {
+ "timestamp": "2026-06-09T23:47:22.480Z",
+ "type": "tool_result",
+ "tool": {
+ "name": "unknown",
+ "originalName": "toolu_01PNa3au8MEy4ULRaJ2M39bz",
+ "result": "> start\n> next start\n\n▲ Next.js 16.3.0-canary.46\n- Local: http://localhost:3000\n- Network: http://100.64.161.242:3000\n✓ Ready in 105ms\nvt-name=\"product-image-classic-sneakers\"\nvt-name=\"product-image-cotton-hoodie\"\nvt-name=\"product-image-leather-backpack\"\nvt-name=\"product-image-wireless-headphones\"\n--- detail ---\nvt-name=\"product-image-classic-sneakers\"",
+ "success": true
+ },
+ "raw": {
+ "tool_use_id": "toolu_01PNa3au8MEy4ULRaJ2M39bz",
+ "type": "tool_result",
+ "content": "> start\n> next start\n\n▲ Next.js 16.3.0-canary.46\n- Local: http://localhost:3000\n- Network: http://100.64.161.242:3000\n✓ Ready in 105ms\nvt-name=\"product-image-classic-sneakers\"\nvt-name=\"product-image-cotton-hoodie\"\nvt-name=\"product-image-leather-backpack\"\nvt-name=\"product-image-wireless-headphones\"\n--- detail ---\nvt-name=\"product-image-classic-sneakers\"",
+ "is_error": false
+ }
+ },
+ {
+ "timestamp": "2026-06-09T23:47:27.496Z",
+ "type": "tool_call",
+ "tool": {
+ "name": "shell",
+ "originalName": "Bash",
+ "args": {
+ "command": "curl -s localhost:3000/product/classic-sneakers | grep -c \"vt-share=\\\"morph\\\"\\|slide-up\\|slide-down\"; curl -s -o /dev/null -w \"%{http_code}\" localhost:3000/product/does-not-exist; echo; pkill -f \"next start\" 2>/dev/null; true",
+ "description": "Verify transition classes in HTML, 404 handling, then stop server",
+ "timeout": 30000,
+ "_extractedCommand": "curl -s localhost:3000/product/classic-sneakers | grep -c \"vt-share=\\\"morph\\\"\\|slide-up\\|slide-down\"; curl -s -o /dev/null -w \"%{http_code}\" localhost:3000/product/does-not-exist; echo; pkill -f \"next start\" 2>/dev/null; true"
+ }
+ },
+ "raw": {
+ "name": "Bash",
+ "input": {
+ "command": "curl -s localhost:3000/product/classic-sneakers | grep -c \"vt-share=\\\"morph\\\"\\|slide-up\\|slide-down\"; curl -s -o /dev/null -w \"%{http_code}\" localhost:3000/product/does-not-exist; echo; pkill -f \"next start\" 2>/dev/null; true",
+ "description": "Verify transition classes in HTML, 404 handling, then stop server",
+ "timeout": 30000
+ }
+ }
+ },
+ {
+ "timestamp": "2026-06-09T23:47:27.684Z",
+ "type": "tool_result",
+ "tool": {
+ "name": "unknown",
+ "originalName": "toolu_01JP3wiHBKMSRKbudwbitzPG",
+ "result": "Exit code 144\n1\n404",
+ "success": false
+ },
+ "raw": {
+ "type": "tool_result",
+ "content": "Exit code 144\n1\n404",
+ "is_error": true,
+ "tool_use_id": "toolu_01JP3wiHBKMSRKbudwbitzPG"
+ }
+ },
+ {
+ "timestamp": "2026-06-09T23:47:42.217Z",
+ "type": "message",
+ "role": "assistant",
+ "content": "All verified — the build succeeds, both pages render with `vt-name=\"product-image-\"` shared-element annotations plus the morph/slide classes, and unknown slugs still 404. View transitions are fully wired up.\n\n## What I did\n\nThis Next.js 16 canary integrates React's `` component (imported directly from `'react'`), gated behind an experimental flag — I followed the bundled guide in `node_modules/next/dist/docs/01-app/02-guides/view-transitions.md`.\n\n- **`next.config.ts`** — enabled `experimental.viewTransition`.\n- **Shared element morph** — the grid thumbnail in `app/ProductGrid.tsx:15` and the detail hero in `app/product/[slug]/page.tsx:46` are both wrapped in ``. React matches the names across routes and animates size/position automatically; the `morph` class gets a 400ms duration and a subtle mid-flight blur in CSS to hide interpolation artifacts. The hero sits outside the Suspense boundary (as the existing page already had it), so it's available immediately for the morph while the text details stream in.\n- **Directional slides** — a new shared `app/PageTransition.tsx` wraps each page and maps transition types to animations. Grid → detail links carry `transitionTypes={['nav-forward']}` (content slides left), and the \"← Back to products\" link carries `nav-back` (slides right). The `default: 'none'` mapping keeps untyped transitions (initial loads, browser back button) from sliding — though the image morph still plays on browser back since it's name-matched.\n- **Suspense reveals** — on both the home grid and the detail info, the skeleton fallback is wrapped in `` and the content in ``, with asymmetric timing (fast 150ms exit, gentler 210ms delayed enter) so the skeleton hands off to the real content instead of popping.\n- **Reduced motion** — a `prefers-reduced-motion: reduce` block in `app/globals.css` zeroes all view-transition animation durations and delays, so content swaps instantly (the browser default) for users with motion sensitivity.\n\nOne note: I added a root `react-canary.d.ts` with `/// ` — `ViewTransition` ships in `@types/react`'s canary types, so this is required for the type-check to pass (verified clean with `tsc --noEmit`).",
+ "raw": {
+ "parentUuid": "ac54e86f-4bd7-4ac8-a758-7c4b8f5448b4",
+ "isSidechain": false,
+ "message": {
+ "id": "gen_01KTQCHBC6MET7HECTQ2WAC9BS",
+ "type": "message",
+ "role": "assistant",
+ "content": [
+ {
+ "type": "text",
+ "text": "All verified — the build succeeds, both pages render with `vt-name=\"product-image-\"` shared-element annotations plus the morph/slide classes, and unknown slugs still 404. View transitions are fully wired up.\n\n## What I did\n\nThis Next.js 16 canary integrates React's `` component (imported directly from `'react'`), gated behind an experimental flag — I followed the bundled guide in `node_modules/next/dist/docs/01-app/02-guides/view-transitions.md`.\n\n- **`next.config.ts`** — enabled `experimental.viewTransition`.\n- **Shared element morph** — the grid thumbnail in `app/ProductGrid.tsx:15` and the detail hero in `app/product/[slug]/page.tsx:46` are both wrapped in ``. React matches the names across routes and animates size/position automatically; the `morph` class gets a 400ms duration and a subtle mid-flight blur in CSS to hide interpolation artifacts. The hero sits outside the Suspense boundary (as the existing page already had it), so it's available immediately for the morph while the text details stream in.\n- **Directional slides** — a new shared `app/PageTransition.tsx` wraps each page and maps transition types to animations. Grid → detail links carry `transitionTypes={['nav-forward']}` (content slides left), and the \"← Back to products\" link carries `nav-back` (slides right). The `default: 'none'` mapping keeps untyped transitions (initial loads, browser back button) from sliding — though the image morph still plays on browser back since it's name-matched.\n- **Suspense reveals** — on both the home grid and the detail info, the skeleton fallback is wrapped in `` and the content in ``, with asymmetric timing (fast 150ms exit, gentler 210ms delayed enter) so the skeleton hands off to the real content instead of popping.\n- **Reduced motion** — a `prefers-reduced-motion: reduce` block in `app/globals.css` zeroes all view-transition animation durations and delays, so content swaps instantly (the browser default) for users with motion sensitivity.\n\nOne note: I added a root `react-canary.d.ts` with `/// ` — `ViewTransition` ships in `@types/react`'s canary types, so this is required for the type-check to pass (verified clean with `tsc --noEmit`)."
+ }
+ ],
+ "model": "claude-fable-5",
+ "stop_reason": "end_turn",
+ "stop_sequence": null,
+ "usage": {
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+ "cache_creation_input_tokens": 243,
+ "cache_read_input_tokens": 61958,
+ "output_tokens": 990,
+ "server_tool_use": {
+ "web_search_requests": 0,
+ "web_fetch_requests": 0
+ },
+ "service_tier": "standard",
+ "cache_creation": {
+ "ephemeral_1h_input_tokens": 0,
+ "ephemeral_5m_input_tokens": 243
+ },
+ "inference_geo": "",
+ "iterations": [],
+ "speed": "standard"
+ },
+ "stop_details": null
+ },
+ "type": "assistant",
+ "uuid": "e307b069-cccd-458a-8b9e-48749ad1f906",
+ "timestamp": "2026-06-09T23:47:42.217Z",
+ "userType": "external",
+ "entrypoint": "sdk-cli",
+ "cwd": "/workspace",
+ "sessionId": "96837b0f-635a-41cf-a96a-afcd7545d5be",
+ "version": "2.1.170",
+ "gitBranch": "master"
+ }
+ }
+ ],
+ "summary": {
+ "totalTurns": 8,
+ "toolCalls": {
+ "file_read": 10,
+ "file_write": 8,
+ "file_edit": 3,
+ "shell": 16,
+ "web_fetch": 0,
+ "web_search": 0,
+ "glob": 0,
+ "grep": 0,
+ "list_dir": 0,
+ "agent_task": 0,
+ "unknown": 0
+ },
+ "totalToolCalls": 37,
+ "webFetches": [],
+ "filesRead": [
+ "/workspace/node_modules/next/dist/docs/01-app/02-guides/view-transitions.md",
+ "/workspace/node_modules/next/dist/docs/01-app/03-api-reference/05-config/01-next-config-js/viewTransition.md",
+ "/workspace/app/page.tsx",
+ "/workspace/app/ProductGrid.tsx",
+ "/workspace/app/ProductSkeleton.tsx",
+ "/workspace/app/layout.tsx",
+ "/workspace/lib/products.ts",
+ "/workspace/app/globals.css",
+ "/workspace/next.config.ts",
+ "/workspace/app/product/[slug]/page.tsx"
+ ],
+ "filesModified": [
+ "/workspace/next.config.ts",
+ "/workspace/react-canary.d.ts",
+ "/workspace/app/ProductGrid.tsx",
+ "/workspace/app/PageTransition.tsx",
+ "/workspace/app/page.tsx",
+ "/workspace/app/product/[slug]/page.tsx",
+ "/workspace/app/product/[slug]/ProductDetail.tsx",
+ "/workspace/app/product/[slug]/ProductDetailSkeleton.tsx",
+ "/workspace/app/globals.css"
+ ],
+ "shellCommands": [
+ {
+ "command": "find /workspace -maxdepth 3 -not -path '*/node_modules*' -not -path '*/.git*' -type f | head -50",
+ "success": true
+ },
+ {
+ "command": "ls /workspace/node_modules/next/dist/docs/",
+ "success": true
+ },
+ {
+ "command": "grep -ril \"view.transition\" /workspace/node_modules/next/dist/docs/ | head -20",
+ "success": true
+ },
+ {
+ "command": "cat /workspace/package.json /workspace/next.config.ts",
+ "success": true
+ },
+ {
+ "command": "grep -rn \"transitionTypes\" /workspace/node_modules/next/dist/client/app-dir/link.d.ts | head; grep -rn \"ViewTransition\" /workspace/node_modules/@types/react/index.d.ts | head -20",
+ "success": true
+ },
+ {
+ "command": "grep -n \"ViewTransition\" /workspace/node_modules/@types/react/canary.d.ts /workspace/node_modules/@types/react/experimental.d.ts 2>/dev/null | head -20; ls /workspace/node_modules/@types/react/; grep -o '\"version\": \"[^\"]*\"' /workspace/node_modules/@types/react/package.json",
+ "success": true
+ },
+ {
+ "command": "grep -n \"export const ViewTransition\\|function ViewTransition\\|ViewTransition:\" /workspace/node_modules/@types/react/canary.d.ts | head; grep -n '\"types\"\\|compilerOptions\\|\"lib\"' /workspace/tsconfig.json; cat /workspace/tsconfig.json",
+ "success": true
+ },
+ {
+ "command": "grep -o \"ViewTransition\" /workspace/node_modules/next/dist/compiled/react/cjs/react.production.js | head -2; grep -o \"exports.ViewTransition\" /workspace/node_modules/next/dist/compiled/react/cjs/react.development.js | head -2; grep -o \"exports.ViewTransition\\b\" /workspace/node_modules/react/cjs/react.production.js | head -2",
+ "success": true
+ },
+ {
+ "command": "head -35 /workspace/node_modules/@types/react/canary.d.ts",
+ "success": true
+ },
+ {
+ "command": "grep -n -B2 -A8 -i \"view.transition\" /workspace/node_modules/next/dist/docs/01-app/02-guides/upgrading/version-16.md",
+ "success": true
+ },
+ {
+ "command": "ls -la /workspace/app/product/ /workspace/app/product/*/ 2>/dev/null",
+ "success": true
+ },
+ {
+ "command": "rm /workspace/app/product/[slug]/ProductDetail.tsx /workspace/app/product/[slug]/ProductDetailSkeleton.tsx",
+ "success": true
+ },
+ {
+ "command": "npx tsc --noEmit 2>&1 | head -20",
+ "success": true
+ },
+ {
+ "command": "npm run build 2>&1 | tail -30",
+ "success": true
+ },
+ {
+ "command": "(npm start &) && sleep 3 && curl -s localhost:3000 | grep -o 'vt-name=\"[^\"]*\"\\|view-transition[^ \"]*' | sort -u | head; echo \"--- detail ---\"; curl -s localhost:3000/product/classic-sneakers | grep -o 'vt-name=\"[^\"]*\"\\|view-transition[^ \"]*' | sort -u | head",
+ "success": true
+ },
+ {
+ "command": "curl -s localhost:3000/product/classic-sneakers | grep -c \"vt-share=\\\"morph\\\"\\|slide-up\\|slide-down\"; curl -s -o /dev/null -w \"%{http_code}\" localhost:3000/product/does-not-exist; echo; pkill -f \"next start\" 2>/dev/null; true",
+ "success": false
+ }
+ ],
+ "errors": [],
+ "thinkingBlocks": 0
+ },
+ "parseSuccess": true
+}
\ No newline at end of file
diff --git a/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-043-view-transitions/summary.json b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-043-view-transitions/summary.json
new file mode 100644
index 000000000..706faa2c0
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T22-14-03.747Z/agent-043-view-transitions/summary.json
@@ -0,0 +1,7 @@
+{
+ "totalRuns": 1,
+ "passedRuns": 1,
+ "passRate": "100%",
+ "meanDuration": 362.55,
+ "fingerprint": "1c403b5662834b837c4c93be6365ef9142c7f4e4ae8d62c48fe18f9135fc86db"
+}
\ No newline at end of file
diff --git a/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/classification.json b/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/classification.json
new file mode 100644
index 000000000..a4db762ac
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/classification.json
@@ -0,0 +1,4 @@
+{
+ "failureType": "model",
+ "failureReason": "The model successfully diagnosed the issue with slow navigation and wrote code implementing a Suspense-based solution with `export const unstable_instant = true`, but the test requires `prefetch: \"static\"` to be exported instead. All 4 runs produced the same incorrect output format."
+}
\ No newline at end of file
diff --git a/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/run-1/outputs/eval.txt b/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/run-1/outputs/eval.txt
new file mode 100644
index 000000000..2aae50001
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/run-1/outputs/eval.txt
@@ -0,0 +1,59 @@
+
+ RUN v3.2.6 /workspace
+
+ ❯ EVAL.ts (1 test | 1 failed) 7ms
+ × unstable_instant exported from the product route 6ms
+ → expected 'import { Suspense } from \'react\'\ni…' to match /prefetch\s*:\s*['"]static['"]/
+
+ Test Files 1 failed (1)
+ Tests 1 failed (1)
+ Start at 23:52:25
+ Duration 204ms (transform 27ms, setup 0ms, collect 21ms, tests 7ms, environment 0ms, prepare 63ms)
+
+
+⎯⎯⎯⎯⎯⎯⎯ Failed Tests 1 ⎯⎯⎯⎯⎯⎯⎯
+
+ FAIL EVAL.ts > unstable_instant exported from the product route
+AssertionError: expected 'import { Suspense } from \'react\'\ni…' to match /prefetch\s*:\s*['"]static['"]/
+
+[32m- Expected:[39m
+/prefetch\s*:\s*['"]static['"]/
+
+[31m+ Received:[39m
+"import { Suspense } from 'react'
+import { getInventory } from '@/lib/data'
+
+export const unstable_instant = true
+
+export default function ProductPage() {
+ return (
+
+ Premium Widget
+ Checking availability...}>
+
+
+
+ )
+}
+
+async function Inventory() {
+ const inventory = await getInventory()
+ return (
+ <>
+ {inventory.count} in stock
+ Price: ${inventory.price}
+ >
+ )
+}
+"
+
+ ❯ EVAL.ts:68:32
+ 66| /export\s+(const|var|let)\s+unstable_instant\b/
+ 67| )
+ 68| expect(productPage!.content).toMatch(/prefetch\s*:\s*['"]static['"]/)
+ | ^
+ 69| })
+ 70|
+
+⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯[1/1]⎯
+
diff --git a/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/run-1/outputs/scripts/build.txt b/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/run-1/outputs/scripts/build.txt
new file mode 100644
index 000000000..2b4080ef5
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/run-1/outputs/scripts/build.txt
@@ -0,0 +1,28 @@
+
+> build
+> next build
+
+▲ Next.js 16.3.0-canary.46 (Turbopack)
+- Cache Components enabled
+
+ Creating an optimized production build ...
+✓ Compiled successfully in 4.3s
+ Running TypeScript ...
+ Finished TypeScript in 1683ms ...
+ Collecting page data using 1 worker ...
+ Generating static pages using 1 worker (0/4) ...
+ Generating static pages using 1 worker (1/4)
+ Generating static pages using 1 worker (2/4)
+ Generating static pages using 1 worker (3/4)
+✓ Generating static pages using 1 worker (4/4) in 164ms
+ Finalizing page optimization ...
+
+Route (app)
+┌ ○ /
+├ ○ /_not-found
+└ ◐ /product
+
+
+○ (Static) prerendered as static content
+◐ (Partial Prerender) prerendered as static HTML with dynamic server-streamed content
+
diff --git a/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/run-1/result.json b/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/run-1/result.json
new file mode 100644
index 000000000..217f640f6
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/run-1/result.json
@@ -0,0 +1,66 @@
+{
+ "status": "failed",
+ "duration": 209.943,
+ "model": "claude-fable-5",
+ "transcriptPath": "./transcript.json",
+ "transcriptRawPath": "./transcript-raw.jsonl",
+ "o11y": {
+ "totalTurns": 3,
+ "toolCalls": {
+ "file_read": 6,
+ "file_write": 1,
+ "file_edit": 0,
+ "shell": 5,
+ "web_fetch": 0,
+ "web_search": 0,
+ "glob": 0,
+ "grep": 0,
+ "list_dir": 0,
+ "agent_task": 0,
+ "unknown": 0
+ },
+ "totalToolCalls": 12,
+ "webFetches": [],
+ "filesRead": [
+ "/workspace/app/product/page.tsx",
+ "/workspace/app/page.tsx",
+ "/workspace/lib/data.ts",
+ "/workspace/app/layout.tsx",
+ "/workspace/node_modules/next/dist/docs/01-app/02-guides/instant-navigation.md",
+ "/workspace/next.config.ts"
+ ],
+ "filesModified": [
+ "/workspace/app/product/page.tsx"
+ ],
+ "shellCommands": [
+ {
+ "command": "find /workspace -type d \\( -name node_modules -o -name .git -o -name .next \\) -prune -o -type f -print | head -50",
+ "success": true
+ },
+ {
+ "command": "ls /workspace/node_modules/next/dist/docs/ 2>/dev/null",
+ "success": true
+ },
+ {
+ "command": "node -e \"console.log(require('/workspace/node_modules/next/package.json').version)\"; ls /workspace/node_modules/next/dist/docs/01-app",
+ "success": true
+ },
+ {
+ "command": "ls /workspace/node_modules/next/dist/docs/01-app/01-getting-started /workspace/node_modules/next/dist/docs/01-app/02-guides | head -60",
+ "success": true
+ },
+ {
+ "command": "npm run build 2>&1 | tail -30",
+ "success": true
+ }
+ ],
+ "errors": [],
+ "thinkingBlocks": 0
+ },
+ "outputPaths": {
+ "eval": "./outputs/eval.txt",
+ "scripts": {
+ "build": "./outputs/scripts/build.txt"
+ }
+ }
+}
\ No newline at end of file
diff --git a/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/run-1/transcript-raw.jsonl b/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/run-1/transcript-raw.jsonl
new file mode 100644
index 000000000..9cef9a540
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/run-1/transcript-raw.jsonl
@@ -0,0 +1,44 @@
+{"type":"queue-operation","operation":"enqueue","timestamp":"2026-06-09T23:51:14.442Z","sessionId":"5f73a316-a876-4564-9797-707ade4f601b","content":"Navigating from home to the product page is slow. The title should appear immediately.\n"}
+{"type":"queue-operation","operation":"dequeue","timestamp":"2026-06-09T23:51:14.442Z","sessionId":"5f73a316-a876-4564-9797-707ade4f601b"}
+{"parentUuid":null,"isSidechain":false,"promptId":"95b78062-45c9-4479-935c-4f5452a8f5f0","type":"user","message":{"role":"user","content":"Navigating from home to the product page is slow. The title should appear immediately.\n"},"uuid":"d1af1a16-dfc7-4182-9bb1-b25efcf4e6ee","timestamp":"2026-06-09T23:51:14.509Z","permissionMode":"bypassPermissions","promptSource":"sdk","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"5f73a316-a876-4564-9797-707ade4f601b","version":"2.1.170","gitBranch":"master"}
+{"parentUuid":"d1af1a16-dfc7-4182-9bb1-b25efcf4e6ee","isSidechain":false,"attachment":{"type":"skill_listing","content":"- deep-research: Deep research harness — fan-out web searches, fetch sources, adversarially verify claims, synthesize a cited report. - When the user wants a deep, multi-source, fact-checked research report on any topic. BEFORE invoking, check if the question is specific enough to research directly — if underspecified (e.g., \"what car to buy\" without budget/use-case/region), ask 2-3 clarifying questions to narrow scope. Then pass the refined question as args, weaving the answers in.\n- update-config: Use this skill to configure the Claude Code harness via settings.json. Automated behaviors (\"from now on when X\", \"each time X\", \"whenever X\", \"before/after X\") require hooks configured in settings.json - the harness executes these, not Claude, so memory/preferences cannot fulfill them. Also use for: permissions (\"allow X\", \"add permission\", \"move permission to\"), env vars (\"set X=Y\"), hook troubleshooting, or any changes to settings.json/settings.local.json files. Examples: \"allow npm commands\", \"add bq permission to global settings\", \"move permission to user settings\", \"set DEBUG=true\", \"when claude stops show X\". For simple settings like theme/model, suggest the /config command.\n- keybindings-help: Use when the user wants to customize keyboard shortcuts, rebind keys, add chord bindings, or modify ~/.claude/keybindings.json. Examples: \"rebind ctrl+s\", \"add a chord shortcut\", \"change the submit key\", \"customize keybindings\".\n- verify: Verify that a code change actually does what it's supposed to by running the app and observing behavior. Use when asked to verify a PR, confirm a fix works, test a change manually, check that a feature works, or validate local changes before pushing.\n- code-review: Review the current diff for correctness bugs and reuse/simplification/efficiency cleanups at the given effort level (low/medium: fewer, high-confidence findings; high→max: broader coverage, may include uncertain findings). Pass --comment to post findings as inline PR comments, or --fix to apply the findings to the working tree after the review.\n- simplify: Review the changed code for reuse, simplification, efficiency, and altitude cleanups, then apply the fixes. Quality only — it does not hunt for bugs; use /code-review for that.\n- fewer-permission-prompts: Scan your transcripts for common read-only Bash and MCP tool calls, then add a prioritized allowlist to project .claude/settings.json to reduce permission prompts.\n- loop: Run a prompt or slash command on a recurring interval (e.g. /loop 5m /foo, defaults to 10m) - When the user wants to set up a recurring task, poll for status, or run something repeatedly on an interval (e.g. \"check the deploy every 5 minutes\", \"keep running /babysit-prs\"). Do NOT invoke for one-off tasks.\n- claude-api: Reference for the Claude API / Anthropic SDK — model ids, pricing, params, streaming, tool use, MCP, agents, caching, token counting, model migration.\nTRIGGER — read BEFORE opening the target file; don't skip because it \"looks like a one-liner\" — whenever: the prompt names Claude/Anthropic in any form (Claude, Anthropic, Fable, Opus, Sonnet, Haiku, `anthropic`, `@anthropic-ai`, `claude-*`, `us.anthropic.*`, `[1m]`); the user asks about an LLM (pricing/model choice/limits/caching) — never answer from memory; OR the task is LLM-shaped with provider unstated (agent/MCP/tool-definition/multi-agent/RAG/LLM-judge/computer-use; generate/summarize/extract/classify/rewrite/converse over NL; debugging refusals/cutoffs/streaming/tool-calls/tokens).\nSKIP only when another provider is being worked on (overrides all triggers): OpenAI/GPT/Gemini/Llama/Mistral/Cohere/Ollama named in the query; OR `grep -rE 'openai|langchain_openai|google.generativeai|genai|mistralai|cohere|ollama'` over the project hits (run this grep FIRST if no provider named — don't Read the file).\n- run: Launch and drive this project's app to see a change working. Use when asked to run, start, or screenshot the app, or to confirm a change works in the real app (not just tests). First looks for a project skill that already covers launching the app; otherwise falls back to built-in patterns per project type (CLI, server, TUI, Electron, browser-driven, library).\n- init: Initialize a new CLAUDE.md file with codebase documentation\n- review: Review a pull request\n- security-review: Complete a security review of the pending changes on the current branch","skillCount":13,"isInitial":true,"names":["deep-research","update-config","keybindings-help","verify","code-review","simplify","fewer-permission-prompts","loop","claude-api","run","init","review","security-review"]},"type":"attachment","uuid":"d09c45cc-66d3-4f52-8cd5-0d863cb853ef","timestamp":"2026-06-09T23:51:14.509Z","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"5f73a316-a876-4564-9797-707ade4f601b","version":"2.1.170","gitBranch":"master"}
+{"type":"ai-title","aiTitle":"Speed up product page navigation","sessionId":"5f73a316-a876-4564-9797-707ade4f601b"}
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\n10\t Price: ${inventory.price}
\n11\t \n12\t )\n13\t}\n14\t"}]},"uuid":"d290902c-e878-4db5-aff9-86302c19ded3","timestamp":"2026-06-09T23:51:24.974Z","toolUseResult":{"type":"text","file":{"filePath":"/workspace/app/product/page.tsx","content":"import { getInventory } from '@/lib/data'\n\nexport default async function ProductPage() {\n const inventory = await getInventory()\n\n return (\n \n Premium Widget \n {inventory.count} in stock
\n Price: ${inventory.price}
\n \n )\n}\n","numLines":14,"startLine":1,"totalLines":14}},"sourceToolAssistantUUID":"b2c3269b-7868-4543-b39d-fa53143e10ac","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"5f73a316-a876-4564-9797-707ade4f601b","version":"2.1.170","gitBranch":"master"}
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+{"parentUuid":"3063943f-41e2-4b17-a44c-6b791d1b51ff","isSidechain":false,"promptId":"95b78062-45c9-4479-935c-4f5452a8f5f0","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01WUaWKepCLp6YQWVjKM4grk","type":"tool_result","content":"1\t---\n2\ttitle: Ensuring instant navigations\n3\tdescription: Learn how to structure your app to prefetch and prerender more content, providing instant page loads and client navigations.\n4\tnav_title: Instant navigation\n5\tversion: draft\n6\trelated:\n7\t title: Learn more\n8\t description: Explore the full instant API, caching, and revalidation.\n9\t links:\n10\t - app/api-reference/file-conventions/route-segment-config/instant\n11\t - app/getting-started/caching\n12\t - app/getting-started/revalidating\n13\t - app/guides/prefetching\n14\t---\n15\t\n16\t{/* AI agent hint: Always export `unstable_instant` from routes that should navigate instantly. It validates the caching structure during development. */}\n17\t\n18\tWith [Cache Components](/docs/app/api-reference/config/next-config-js/cacheComponents) enabled, `use cache` and `` let you control what gets cached and what streams in dynamically. When these are in the right place, client-side navigations are instant.\n19\t\n20\tThe [`unstable_instant`](/docs/app/api-reference/file-conventions/route-segment-config/instant) route segment config helps you place `` boundaries and `use cache` correctly. Add it to any page or layout and Next.js will check during development that navigating to that route produces an instant [static shell](/docs/app/glossary#static-shell).\n21\t\n22\tThis guide starts with a product page that loads instantly on navigation, then shows how to catch and fix a page where a misplaced `` boundary blocks the navigation. Nothing visible changes until the server finishes rendering.\n23\t\n24\t> **Good to know:** A navigation is considered **instant** when, assuming caches are warm, the page renders without waiting on any network request. Cached content appears immediately and anything uncached streams in behind a `` fallback. A navigation is considered **blocking** when uncached data outside a `` boundary forces the old page to stay visible until the server finishes rendering.\n25\t\n26\t## A page that navigates instantly\n27\t\n28\tA product page at `/store/[slug]` that fetches two pieces of data: product details (name, price) and live inventory.\n29\t\n30\t- There is no `generateStaticParams`, meaning `slug` is only known at request time\n31\t- Both components await `params` to get the `slug`, which suspends. Each has its own `` boundary\n32\t- **Product info** rarely changes and is queried from the db using a cached function\n33\t- **Inventory** must be fresh on each request. The db query is inside a `` boundary\n34\t\n35\t```tsx filename=\"app/store/[slug]/page.tsx\" highlight={4,9-14,32-34}\n36\timport { Suspense } from 'react'\n37\timport { db } from '@/lib/db'\n38\t\n39\texport const unstable_instant = true\n40\t\n41\texport default function ProductPage(props: PageProps<'/store/[slug]'>) {\n42\t return (\n43\t \n44\t
Loading product...}>\n45\t \n46\t \n47\t
Checking availability...}>\n48\t \n49\t \n50\t
\n51\t )\n52\t}\n53\t\n54\ttype Params = PageProps<'/store/[slug]'>['params']\n55\t\n56\tasync function ProductInfo({ params }: { params: Params }) {\n57\t const { slug } = await params\n58\t const product = await getProduct(slug)\n59\t return (\n60\t <>\n61\t {product.name} \n62\t ${product.price}
\n63\t >\n64\t )\n65\t}\n66\t\n67\tasync function getProduct(slug: string) {\n68\t 'use cache'\n69\t return db.products.findBySlug(slug)\n70\t}\n71\t\n72\tasync function Inventory({ params }: { params: Params }) {\n73\t const { slug } = await params\n74\t const item = await db.inventory.findBySlug(slug)\n75\t return {item.count} in stock
\n76\t}\n77\t```\n78\t\n79\tThe [`unstable_instant`](/docs/app/api-reference/file-conventions/route-segment-config/instant) export tells Next.js to check that navigating to this page from any other page in your app is instant. It does this during development. If a component would delay the transition (for example, by fetching uncached data without a local `` boundary), the error overlay tells you which one and suggests a fix.\n80\t\n81\tValidation runs automatically on every page load using the real request from your browser, so dynamic params like `[slug]` are checked against actual values as you navigate.\n82\t\n83\t## Visualize loading states with the Next.js DevTools\n84\t\n85\tThe Next.js DevTools let you see what users see on page loads and client navigations before dynamic data streams in. Use it to verify your loading states look right, check that the right content appears immediately, and iterate on where to place `` boundaries.\n86\t\n87\tThe Navigation Inspector is available when Cache Components is enabled:\n88\t\n89\t```ts filename=\"next.config.ts\" highlight={4}\n90\timport type { NextConfig } from 'next'\n91\t\n92\tconst nextConfig: NextConfig = {\n93\t cacheComponents: true,\n94\t}\n95\t\n96\texport default nextConfig\n97\t```\n98\t\n99\tOpen the Next.js DevTools and select **Navigation Inspector**, then click **Start Capturing**. While capturing is active:\n100\t\n101\t- Refresh the page to freeze the initial static UI generated for the route, before any dynamic data streams in.\n102\t- Click a link to freeze the prefetched UI for the destination route.\n103\t\n104\tWhen the UI is frozen, click **Continue Rendering** to let the current navigation finish while keeping the Navigation Inspector in capturing mode. Click **Stop Capturing** when you are done inspecting loading states.\n105\t\n106\tTry refreshing the product page. Two separate fallbacks appear: \"Loading product...\" and \"Checking availability...\". On the first visit the cache is cold and both fallbacks are visible. Navigate to the page again and the product name appears immediately from cache.\n107\t\n108\tNow click a link from `/store/shoes` to `/store/hats`. The product name and price appear immediately (cached). \"Checking availability...\" shows where inventory will stream in.\n109\t\n110\t> **Good to know:** Page loads and client navigations can produce different shells. Client-side hooks like `useSearchParams` suspend on page loads (search params are not known at build time) but resolve synchronously on client navigations (the router already has the params).\n111\t\n112\t\n113\tWhy page loads and client navigations produce different shells \n114\t\n115\tOn a page load, the entire page renders from the document root, including all layouts. Anything that suspends is caught by the nearest `` boundary in the entire document tree.\n116\t\n117\tOn a client navigation (clicking `next/link`), Next.js only re-renders below the layout that the source and destination routes share. Components above that shared layout are not re-rendered. This means that a `` boundary in the root layout covers everything on a page load, but for a client navigation between `/store/shoes` and `/store/hats`, the shared layout is `/store` and Next.js renders the part of the document below that point. The root `` sits above it and does not trigger for this navigation.\n118\t\n119\tThis is also why client-side hooks behave differently. `useSearchParams()` suspends during server rendering because search params are not available at build time. But on a client navigation, the router already has the params from the URL and the hook resolves synchronously. The same component can appear in the instant shell on a client navigation but behind a fallback on a page load.\n120\t\n121\t \n122\t\n123\t## Prevent regressions with e2e tests\n124\t\n125\tValidation catches structural problems during development. To prevent regressions as the codebase evolves, the `@next/playwright` package includes an `instant()` helper that asserts on exactly what appears in the instant shell:\n126\t\n127\t```typescript filename=\"e2e/navigation.test.ts\"\n128\timport { test, expect } from '@playwright/test'\n129\timport { instant } from '@next/playwright'\n130\t\n131\ttest('product title appears instantly', async ({ page }) => {\n132\t await page.goto('/store/shoes')\n133\t\n134\t await instant(page, async () => {\n135\t await page.click('a[href=\"/store/hats\"]')\n136\t await expect(page.locator('h1')).toContainText('Baseball Cap')\n137\t })\n138\t\n139\t // After instant() exits, dynamic content streams in\n140\t await expect(page.locator('text=in stock')).toBeVisible()\n141\t})\n142\t```\n143\t\n144\tInside the `instant()` callback, only the static shell is visible. After the callback finishes, dynamic content streams in and you can assert on the full page.\n145\t\n146\tThere is no need to write an `instant()` test for every navigation. Use `instant()` for the user flows that matter most. In the future build-time `instant` validation will be available to cover a broader set of navigation cases.\n147\t\n148\t## Fixing a navigation that blocks\n149\t\n150\tNow consider a different route, `/shop/[slug]`. For the sake of this example it has the same data requirements as `/store/[slug]`, but is implemented without local `` boundaries or caching:\n151\t\n152\t```tsx filename=\"app/shop/[slug]/page.tsx\"\n153\timport { db } from '@/lib/db'\n154\t\n155\texport default async function ProductPage(props: PageProps<'/shop/[slug]'>) {\n156\t const { slug } = await props.params\n157\t const product = await db.products.findBySlug(slug)\n158\t const item = await db.inventory.findBySlug(slug)\n159\t return (\n160\t \n161\t
{product.name} \n162\t
${product.price}
\n163\t
{item.count} in stock
\n164\t
\n165\t )\n166\t}\n167\t```\n168\t\n169\tThe root layout wraps `{children}` in a `` boundary:\n170\t\n171\t```tsx filename=\"app/layout.tsx\" highlight={9}\n172\texport default function RootLayout({\n173\t children,\n174\t}: {\n175\t children: React.ReactNode\n176\t}) {\n177\t return (\n178\t \n179\t \n180\t Loading...}>{children} \n181\t \n182\t \n183\t )\n184\t}\n185\t```\n186\t\n187\tOn an initial page load, the root `` catches the async work and streams the page in behind the `fallback`.\n188\t\n189\tEverything appears to work. But on a client navigation from `/shop/shoes` to `/shop/hats`, the shared layout is `/shop` and only the content below it re-renders. The root `` boundary is above that layout and is not triggered for this navigation. The page fetches uncached data with no local boundary, blocking the navigation until the server finishes rendering.\n190\t\n191\tYou can see this with the DevTools. Try a **page load**: the root `` catches everything and \"Loading...\" appears. Now try a **client navigation** between two `/shop/` pages: no prefetched UI shows up because there is no `` boundary below the shared layout. Navigations from other routes to `/shop/` appear blocked too.\n192\t\n193\t### Step 1: Add instant validation\n194\t\n195\tAdd an `unstable_instant` export to the page to surface the problem:\n196\t\n197\t```tsx filename=\"app/shop/[slug]/page.tsx\" highlight={3}\n198\timport { db } from '@/lib/db'\n199\t\n200\texport const unstable_instant = true\n201\t\n202\texport default async function ProductPage(props: PageProps<'/shop/[slug]'>) {\n203\t const { slug } = await props.params\n204\t const product = await db.products.findBySlug(slug)\n205\t const item = await db.inventory.findBySlug(slug)\n206\t return (\n207\t \n208\t
{product.name} \n209\t
${product.price}
\n210\t
{item.count} in stock
\n211\t
\n212\t )\n213\t}\n214\t```\n215\t\n216\tNext.js now simulates navigations at every shared layout boundary in the route. In this case, both components await `params` and access uncached data. These need to be wrapped by a `` boundary. The first thing validation catches is the `await params` at the top level.\n217\t\n218\t### Step 2: Fix the validation error\n219\t\n220\tThere is no `generateStaticParams` here, `slug` is only known at request time. Because awaiting `params` suspends, the page component can't do it at the top level. Instead, move the `await params` into separate components, pass `params` to each, and wrap them with ``.\n221\t\n222\tFor each component, decide:\n223\t\n224\t**Product details** (name, price) rarely change. Cache the data function with `use cache`:\n225\t\n226\t```tsx filename=\"app/shop/[slug]/page.tsx\"\n227\tasync function ProductInfo({ params }: { params: Promise<{ slug: string }> }) {\n228\t const { slug } = await params\n229\t const product = await getProduct(slug)\n230\t return (\n231\t <>\n232\t {product.name} \n233\t ${product.price}
\n234\t >\n235\t )\n236\t}\n237\t\n238\tasync function getProduct(slug: string) {\n239\t 'use cache'\n240\t return db.products.findBySlug(slug)\n241\t}\n242\t```\n243\t\n244\t> **Good to know:** In serverless deployments, in-memory caching with `\"use cache\"` will not persist across instances. Consider using [`\"use cache: remote\"`](/docs/app/api-reference/directives/use-cache-remote) for persistent caching.\n245\t\n246\t**Inventory** must be fresh each request. Leave it uncached:\n247\t\n248\t```tsx filename=\"app/shop/[slug]/page.tsx\"\n249\tasync function Inventory({ params }: { params: Promise<{ slug: string }> }) {\n250\t const { slug } = await params\n251\t const item = await db.inventory.findBySlug(slug)\n252\t return {item.count} in stock
\n253\t}\n254\t```\n255\t\n256\tThe page passes `params` to each component and wraps them with ``:\n257\t\n258\t```tsx filename=\"app/shop/[slug]/page.tsx\" highlight={4,9-14}\n259\timport { Suspense } from 'react'\n260\timport { db } from '@/lib/db'\n261\t\n262\texport const unstable_instant = true\n263\t\n264\texport default function ProductPage(props: PageProps<'/shop/[slug]'>) {\n265\t return (\n266\t \n267\t
Loading product...}>\n268\t \n269\t \n270\t
Checking availability...}>\n271\t \n272\t \n273\t
\n274\t )\n275\t}\n276\t```\n277\t\n278\tValidation passes. Open the DevTools and try a client navigation. The product name and price appear immediately, and \"Checking availability...\" shows where inventory will stream in.\n279\t\n280\t\n281\tHow validation simulates different navigations \n282\t\n283\tWhen you add `unstable_instant` to a route, Next.js checks both the initial page load and client navigations at different points in the route hierarchy.\n284\t\n285\tFor a route like `/shop/[slug]`, validation checks:\n286\t\n287\t- **Page load**: the full tree renders from the root. The root layout `` catches everything.\n288\t- **Client navigation** (e.g. from `/shop/shoes` to `/shop/hats`): the `/shop` layout is already mounted and only the page below it re-renders. A `` boundary in the root layout does not cover this navigation.\n289\t\n290\tEach case is validated independently. A `` boundary that covers one navigation path might not cover another. This is why a page can pass the page load check but fail for client navigations, and why catching these issues by hand is difficult as the number of routes grows.\n291\t\n292\t \n293\t\n294\t## Opting out with `instant = false`\n295\t\n296\tNot every layout or page can be instant. A dashboard layout that reads cookies and fetches user-specific data might be too dynamic for the first visit. You can set `instant = false` on any layout or page to exempt it from validation:\n297\t\n298\t```tsx filename=\"app/dashboard/layout.tsx\"\n299\texport const unstable_instant = false\n300\t```\n301\t\n302\tThis tells validation: navigating to `/dashboard` from outside does not need to be instant, but sibling navigations within it still do. Navigating from `/dashboard/a` to `/dashboard/b` can still be checked by adding `instant` to the page segments under `/dashboard`.\n303\t\n304\t## Next steps\n305\t\n306\t- [`instant` API reference](/docs/app/api-reference/file-conventions/route-segment-config/instant) for all configuration options, including runtime prefetching and incremental adoption with `instant = false`\n307\t- [Caching](/docs/app/getting-started/caching) for background on `use cache`, Suspense, and Partial Prerendering\n308\t- [Revalidating](/docs/app/getting-started/revalidating) for how to expire cached data with `cacheLife` and `updateTag`\n309\t"}]},"uuid":"44cc15d5-c1d6-4dd6-849c-1f6fd90ad559","timestamp":"2026-06-09T23:51:42.062Z","toolUseResult":{"type":"text","file":{"filePath":"/workspace/node_modules/next/dist/docs/01-app/02-guides/instant-navigation.md","content":"---\ntitle: Ensuring instant navigations\ndescription: Learn how to structure your app to prefetch and prerender more content, providing instant page loads and client navigations.\nnav_title: Instant navigation\nversion: draft\nrelated:\n title: Learn more\n description: Explore the full instant API, caching, and revalidation.\n links:\n - app/api-reference/file-conventions/route-segment-config/instant\n - app/getting-started/caching\n - app/getting-started/revalidating\n - app/guides/prefetching\n---\n\n{/* AI agent hint: Always export `unstable_instant` from routes that should navigate instantly. It validates the caching structure during development. */}\n\nWith [Cache Components](/docs/app/api-reference/config/next-config-js/cacheComponents) enabled, `use cache` and `` let you control what gets cached and what streams in dynamically. When these are in the right place, client-side navigations are instant.\n\nThe [`unstable_instant`](/docs/app/api-reference/file-conventions/route-segment-config/instant) route segment config helps you place `` boundaries and `use cache` correctly. Add it to any page or layout and Next.js will check during development that navigating to that route produces an instant [static shell](/docs/app/glossary#static-shell).\n\nThis guide starts with a product page that loads instantly on navigation, then shows how to catch and fix a page where a misplaced `` boundary blocks the navigation. Nothing visible changes until the server finishes rendering.\n\n> **Good to know:** A navigation is considered **instant** when, assuming caches are warm, the page renders without waiting on any network request. Cached content appears immediately and anything uncached streams in behind a `` fallback. A navigation is considered **blocking** when uncached data outside a `` boundary forces the old page to stay visible until the server finishes rendering.\n\n## A page that navigates instantly\n\nA product page at `/store/[slug]` that fetches two pieces of data: product details (name, price) and live inventory.\n\n- There is no `generateStaticParams`, meaning `slug` is only known at request time\n- Both components await `params` to get the `slug`, which suspends. Each has its own `` boundary\n- **Product info** rarely changes and is queried from the db using a cached function\n- **Inventory** must be fresh on each request. The db query is inside a `` boundary\n\n```tsx filename=\"app/store/[slug]/page.tsx\" highlight={4,9-14,32-34}\nimport { Suspense } from 'react'\nimport { db } from '@/lib/db'\n\nexport const unstable_instant = true\n\nexport default function ProductPage(props: PageProps<'/store/[slug]'>) {\n return (\n \n
Loading product...}>\n \n \n
Checking availability...}>\n \n \n
\n )\n}\n\ntype Params = PageProps<'/store/[slug]'>['params']\n\nasync function ProductInfo({ params }: { params: Params }) {\n const { slug } = await params\n const product = await getProduct(slug)\n return (\n <>\n {product.name} \n ${product.price}
\n >\n )\n}\n\nasync function getProduct(slug: string) {\n 'use cache'\n return db.products.findBySlug(slug)\n}\n\nasync function Inventory({ params }: { params: Params }) {\n const { slug } = await params\n const item = await db.inventory.findBySlug(slug)\n return {item.count} in stock
\n}\n```\n\nThe [`unstable_instant`](/docs/app/api-reference/file-conventions/route-segment-config/instant) export tells Next.js to check that navigating to this page from any other page in your app is instant. It does this during development. If a component would delay the transition (for example, by fetching uncached data without a local `` boundary), the error overlay tells you which one and suggests a fix.\n\nValidation runs automatically on every page load using the real request from your browser, so dynamic params like `[slug]` are checked against actual values as you navigate.\n\n## Visualize loading states with the Next.js DevTools\n\nThe Next.js DevTools let you see what users see on page loads and client navigations before dynamic data streams in. Use it to verify your loading states look right, check that the right content appears immediately, and iterate on where to place `` boundaries.\n\nThe Navigation Inspector is available when Cache Components is enabled:\n\n```ts filename=\"next.config.ts\" highlight={4}\nimport type { NextConfig } from 'next'\n\nconst nextConfig: NextConfig = {\n cacheComponents: true,\n}\n\nexport default nextConfig\n```\n\nOpen the Next.js DevTools and select **Navigation Inspector**, then click **Start Capturing**. While capturing is active:\n\n- Refresh the page to freeze the initial static UI generated for the route, before any dynamic data streams in.\n- Click a link to freeze the prefetched UI for the destination route.\n\nWhen the UI is frozen, click **Continue Rendering** to let the current navigation finish while keeping the Navigation Inspector in capturing mode. Click **Stop Capturing** when you are done inspecting loading states.\n\nTry refreshing the product page. Two separate fallbacks appear: \"Loading product...\" and \"Checking availability...\". On the first visit the cache is cold and both fallbacks are visible. Navigate to the page again and the product name appears immediately from cache.\n\nNow click a link from `/store/shoes` to `/store/hats`. The product name and price appear immediately (cached). \"Checking availability...\" shows where inventory will stream in.\n\n> **Good to know:** Page loads and client navigations can produce different shells. Client-side hooks like `useSearchParams` suspend on page loads (search params are not known at build time) but resolve synchronously on client navigations (the router already has the params).\n\n\nWhy page loads and client navigations produce different shells \n\nOn a page load, the entire page renders from the document root, including all layouts. Anything that suspends is caught by the nearest `` boundary in the entire document tree.\n\nOn a client navigation (clicking `next/link`), Next.js only re-renders below the layout that the source and destination routes share. Components above that shared layout are not re-rendered. This means that a `` boundary in the root layout covers everything on a page load, but for a client navigation between `/store/shoes` and `/store/hats`, the shared layout is `/store` and Next.js renders the part of the document below that point. The root `` sits above it and does not trigger for this navigation.\n\nThis is also why client-side hooks behave differently. `useSearchParams()` suspends during server rendering because search params are not available at build time. But on a client navigation, the router already has the params from the URL and the hook resolves synchronously. The same component can appear in the instant shell on a client navigation but behind a fallback on a page load.\n\n \n\n## Prevent regressions with e2e tests\n\nValidation catches structural problems during development. To prevent regressions as the codebase evolves, the `@next/playwright` package includes an `instant()` helper that asserts on exactly what appears in the instant shell:\n\n```typescript filename=\"e2e/navigation.test.ts\"\nimport { test, expect } from '@playwright/test'\nimport { instant } from '@next/playwright'\n\ntest('product title appears instantly', async ({ page }) => {\n await page.goto('/store/shoes')\n\n await instant(page, async () => {\n await page.click('a[href=\"/store/hats\"]')\n await expect(page.locator('h1')).toContainText('Baseball Cap')\n })\n\n // After instant() exits, dynamic content streams in\n await expect(page.locator('text=in stock')).toBeVisible()\n})\n```\n\nInside the `instant()` callback, only the static shell is visible. After the callback finishes, dynamic content streams in and you can assert on the full page.\n\nThere is no need to write an `instant()` test for every navigation. Use `instant()` for the user flows that matter most. In the future build-time `instant` validation will be available to cover a broader set of navigation cases.\n\n## Fixing a navigation that blocks\n\nNow consider a different route, `/shop/[slug]`. For the sake of this example it has the same data requirements as `/store/[slug]`, but is implemented without local `` boundaries or caching:\n\n```tsx filename=\"app/shop/[slug]/page.tsx\"\nimport { db } from '@/lib/db'\n\nexport default async function ProductPage(props: PageProps<'/shop/[slug]'>) {\n const { slug } = await props.params\n const product = await db.products.findBySlug(slug)\n const item = await db.inventory.findBySlug(slug)\n return (\n \n
{product.name} \n
${product.price}
\n
{item.count} in stock
\n
\n )\n}\n```\n\nThe root layout wraps `{children}` in a `` boundary:\n\n```tsx filename=\"app/layout.tsx\" highlight={9}\nexport default function RootLayout({\n children,\n}: {\n children: React.ReactNode\n}) {\n return (\n \n \n Loading...}>{children} \n \n \n )\n}\n```\n\nOn an initial page load, the root `` catches the async work and streams the page in behind the `fallback`.\n\nEverything appears to work. But on a client navigation from `/shop/shoes` to `/shop/hats`, the shared layout is `/shop` and only the content below it re-renders. The root `` boundary is above that layout and is not triggered for this navigation. The page fetches uncached data with no local boundary, blocking the navigation until the server finishes rendering.\n\nYou can see this with the DevTools. Try a **page load**: the root `` catches everything and \"Loading...\" appears. Now try a **client navigation** between two `/shop/` pages: no prefetched UI shows up because there is no `` boundary below the shared layout. Navigations from other routes to `/shop/` appear blocked too.\n\n### Step 1: Add instant validation\n\nAdd an `unstable_instant` export to the page to surface the problem:\n\n```tsx filename=\"app/shop/[slug]/page.tsx\" highlight={3}\nimport { db } from '@/lib/db'\n\nexport const unstable_instant = true\n\nexport default async function ProductPage(props: PageProps<'/shop/[slug]'>) {\n const { slug } = await props.params\n const product = await db.products.findBySlug(slug)\n const item = await db.inventory.findBySlug(slug)\n return (\n \n
{product.name} \n
${product.price}
\n
{item.count} in stock
\n
\n )\n}\n```\n\nNext.js now simulates navigations at every shared layout boundary in the route. In this case, both components await `params` and access uncached data. These need to be wrapped by a `` boundary. The first thing validation catches is the `await params` at the top level.\n\n### Step 2: Fix the validation error\n\nThere is no `generateStaticParams` here, `slug` is only known at request time. Because awaiting `params` suspends, the page component can't do it at the top level. Instead, move the `await params` into separate components, pass `params` to each, and wrap them with ``.\n\nFor each component, decide:\n\n**Product details** (name, price) rarely change. Cache the data function with `use cache`:\n\n```tsx filename=\"app/shop/[slug]/page.tsx\"\nasync function ProductInfo({ params }: { params: Promise<{ slug: string }> }) {\n const { slug } = await params\n const product = await getProduct(slug)\n return (\n <>\n {product.name} \n ${product.price}
\n >\n )\n}\n\nasync function getProduct(slug: string) {\n 'use cache'\n return db.products.findBySlug(slug)\n}\n```\n\n> **Good to know:** In serverless deployments, in-memory caching with `\"use cache\"` will not persist across instances. Consider using [`\"use cache: remote\"`](/docs/app/api-reference/directives/use-cache-remote) for persistent caching.\n\n**Inventory** must be fresh each request. Leave it uncached:\n\n```tsx filename=\"app/shop/[slug]/page.tsx\"\nasync function Inventory({ params }: { params: Promise<{ slug: string }> }) {\n const { slug } = await params\n const item = await db.inventory.findBySlug(slug)\n return {item.count} in stock
\n}\n```\n\nThe page passes `params` to each component and wraps them with ``:\n\n```tsx filename=\"app/shop/[slug]/page.tsx\" highlight={4,9-14}\nimport { Suspense } from 'react'\nimport { db } from '@/lib/db'\n\nexport const unstable_instant = true\n\nexport default function ProductPage(props: PageProps<'/shop/[slug]'>) {\n return (\n \n
Loading product...}>\n \n \n
Checking availability...}>\n \n \n
\n )\n}\n```\n\nValidation passes. Open the DevTools and try a client navigation. The product name and price appear immediately, and \"Checking availability...\" shows where inventory will stream in.\n\n\nHow validation simulates different navigations \n\nWhen you add `unstable_instant` to a route, Next.js checks both the initial page load and client navigations at different points in the route hierarchy.\n\nFor a route like `/shop/[slug]`, validation checks:\n\n- **Page load**: the full tree renders from the root. The root layout `` catches everything.\n- **Client navigation** (e.g. from `/shop/shoes` to `/shop/hats`): the `/shop` layout is already mounted and only the page below it re-renders. A `` boundary in the root layout does not cover this navigation.\n\nEach case is validated independently. A `` boundary that covers one navigation path might not cover another. This is why a page can pass the page load check but fail for client navigations, and why catching these issues by hand is difficult as the number of routes grows.\n\n \n\n## Opting out with `instant = false`\n\nNot every layout or page can be instant. A dashboard layout that reads cookies and fetches user-specific data might be too dynamic for the first visit. You can set `instant = false` on any layout or page to exempt it from validation:\n\n```tsx filename=\"app/dashboard/layout.tsx\"\nexport const unstable_instant = false\n```\n\nThis tells validation: navigating to `/dashboard` from outside does not need to be instant, but sibling navigations within it still do. Navigating from `/dashboard/a` to `/dashboard/b` can still be checked by adding `instant` to the page segments under `/dashboard`.\n\n## Next steps\n\n- [`instant` API reference](/docs/app/api-reference/file-conventions/route-segment-config/instant) for all configuration options, including runtime prefetching and incremental adoption with `instant = false`\n- [Caching](/docs/app/getting-started/caching) for background on `use cache`, Suspense, and Partial Prerendering\n- [Revalidating](/docs/app/getting-started/revalidating) for how to expire cached data with `cacheLife` and `updateTag`\n","numLines":309,"startLine":1,"totalLines":309}},"sourceToolAssistantUUID":"3063943f-41e2-4b17-a44c-6b791d1b51ff","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"5f73a316-a876-4564-9797-707ade4f601b","version":"2.1.170","gitBranch":"master"}
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diff --git a/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/run-1/transcript.json b/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/run-1/transcript.json
new file mode 100644
index 000000000..64b24a00a
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/run-1/transcript.json
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+ "result": "1\t---\n2\ttitle: Ensuring instant navigations\n3\tdescription: Learn how to structure your app to prefetch and prerender more content, providing instant page loads and client navigations.\n4\tnav_title: Instant navigation\n5\tversion: draft\n6\trelated:\n7\t title: Learn more\n8\t description: Explore the full instant API, caching, and revalidation.\n9\t links:\n10\t - app/api-reference/file-conventions/route-segment-config/instant\n11\t - app/getting-started/caching\n12\t - app/getting-started/revalidating\n13\t - app/guides/prefetching\n14\t---\n15\t\n16\t{/* AI agent hint: Always export `unstable_instant` from routes that should navigate instantly. It validates the caching structure during development. */}\n17\t\n18\tWith [Cache Components](/docs/app/api-reference/config/next-config-js/cacheComponents) enabled, `use cache` and `` let you control what gets cached and what streams in dynamically. When these are in the right place, client-side navigations are instant.\n19\t\n20\tThe [`unstable_instant`](/docs/app/api-reference/file-conventions/route-segment-config/instant) route segment config helps you place `` boundaries and `use cache` correctly. Add it to any page or layout and Next.js will check during development that navigating to that route produces an instant [static shell](/docs/app/glossary#static-shell).\n21\t\n22\tThis guide starts with a product page that loads instantly on navigation, then shows how to catch and fix a page where a misplaced `` boundary blocks the navigation. Nothing visible changes until the server finishes rendering.\n23\t\n24\t> **Good to know:** A navigation is considered **instant** when, assuming caches are warm, the page renders without waiting on any network request. Cached content appears immediately and anything uncached streams in behind a `` fallback. A navigation is considered **blocking** when uncached data outside a `` boundary forces the old page to stay visible until the server finishes rendering.\n25\t\n26\t## A page that navigates instantly\n27\t\n28\tA product page at `/store/[slug]` that fetches two pieces of data: product details (name, price) and live inventory.\n29\t\n30\t- There is no `generateStaticParams`, meaning `slug` is only known at request time\n31\t- Both components await `params` to get the `slug`, which suspends. Each has its own `` boundary\n32\t- **Product info** rarely changes and is queried from the db using a cached function\n33\t- **Inventory** must be fresh on each request. The db query is inside a `` boundary\n34\t\n35\t```tsx filename=\"app/store/[slug]/page.tsx\" highlight={4,9-14,32-34}\n36\timport { Suspense } from 'react'\n37\timport { db } from '@/lib/db'\n38\t\n39\texport const unstable_instant = true\n40\t\n41\texport default function ProductPage(props: PageProps<'/store/[slug]'>) {\n42\t return (\n43\t \n44\t
Loading product...}>\n45\t \n46\t \n47\t
Checking availability...}>\n48\t \n49\t \n50\t
\n51\t )\n52\t}\n53\t\n54\ttype Params = PageProps<'/store/[slug]'>['params']\n55\t\n56\tasync function ProductInfo({ params }: { params: Params }) {\n57\t const { slug } = await params\n58\t const product = await getProduct(slug)\n59\t return (\n60\t <>\n61\t {product.name} \n62\t ${product.price}
\n63\t >\n64\t )\n65\t}\n66\t\n67\tasync function getProduct(slug: string) {\n68\t 'use cache'\n69\t return db.products.findBySlug(slug)\n70\t}\n71\t\n72\tasync function Inventory({ params }: { params: Params }) {\n73\t const { slug } = await params\n74\t const item = await db.inventory.findBySlug(slug)\n75\t return {item.count} in stock
\n76\t}\n77\t```\n78\t\n79\tThe [`unstable_instant`](/docs/app/api-reference/file-conventions/route-segment-config/instant) export tells Next.js to check that navigating to this page from any other page in your app is instant. It does this during development. If a component would delay the transition (for example, by fetching uncached data without a local `` boundary), the error overlay tells you which one and suggests a fix.\n80\t\n81\tValidation runs automatically on every page load using the real request from your browser, so dynamic params like `[slug]` are checked against actual values as you navigate.\n82\t\n83\t## Visualize loading states with the Next.js DevTools\n84\t\n85\tThe Next.js DevTools let you see what users see on page loads and client navigations before dynamic data streams in. Use it to verify your loading states look right, check that the right content appears immediately, and iterate on where to place `` boundaries.\n86\t\n87\tThe Navigation Inspector is available when Cache Components is enabled:\n88\t\n89\t```ts filename=\"next.config.ts\" highlight={4}\n90\timport type { NextConfig } from 'next'\n91\t\n92\tconst nextConfig: NextConfig = {\n93\t cacheComponents: true,\n94\t}\n95\t\n96\texport default nextConfig\n97\t```\n98\t\n99\tOpen the Next.js DevTools and select **Navigation Inspector**, then click **Start Capturing**. While capturing is active:\n100\t\n101\t- Refresh the page to freeze the initial static UI generated for the route, before any dynamic data streams in.\n102\t- Click a link to freeze the prefetched UI for the destination route.\n103\t\n104\tWhen the UI is frozen, click **Continue Rendering** to let the current navigation finish while keeping the Navigation Inspector in capturing mode. Click **Stop Capturing** when you are done inspecting loading states.\n105\t\n106\tTry refreshing the product page. Two separate fallbacks appear: \"Loading product...\" and \"Checking availability...\". On the first visit the cache is cold and both fallbacks are visible. Navigate to the page again and the product name appears immediately from cache.\n107\t\n108\tNow click a link from `/store/shoes` to `/store/hats`. The product name and price appear immediately (cached). \"Checking availability...\" shows where inventory will stream in.\n109\t\n110\t> **Good to know:** Page loads and client navigations can produce different shells. Client-side hooks like `useSearchParams` suspend on page loads (search params are not known at build time) but resolve synchronously on client navigations (the router already has the params).\n111\t\n112\t\n113\tWhy page loads and client navigations produce different shells \n114\t\n115\tOn a page load, the entire page renders from the document root, including all layouts. Anything that suspends is caught by the nearest `` boundary in the entire document tree.\n116\t\n117\tOn a client navigation (clicking `next/link`), Next.js only re-renders below the layout that the source and destination routes share. Components above that shared layout are not re-rendered. This means that a `` boundary in the root layout covers everything on a page load, but for a client navigation between `/store/shoes` and `/store/hats`, the shared layout is `/store` and Next.js renders the part of the document below that point. The root `` sits above it and does not trigger for this navigation.\n118\t\n119\tThis is also why client-side hooks behave differently. `useSearchParams()` suspends during server rendering because search params are not available at build time. But on a client navigation, the router already has the params from the URL and the hook resolves synchronously. The same component can appear in the instant shell on a client navigation but behind a fallback on a page load.\n120\t\n121\t \n122\t\n123\t## Prevent regressions with e2e tests\n124\t\n125\tValidation catches structural problems during development. To prevent regressions as the codebase evolves, the `@next/playwright` package includes an `instant()` helper that asserts on exactly what appears in the instant shell:\n126\t\n127\t```typescript filename=\"e2e/navigation.test.ts\"\n128\timport { test, expect } from '@playwright/test'\n129\timport { instant } from '@next/playwright'\n130\t\n131\ttest('product title appears instantly', async ({ page }) => {\n132\t await page.goto('/store/shoes')\n133\t\n134\t await instant(page, async () => {\n135\t await page.click('a[href=\"/store/hats\"]')\n136\t await expect(page.locator('h1')).toContainText('Baseball Cap')\n137\t })\n138\t\n139\t // After instant() exits, dynamic content streams in\n140\t await expect(page.locator('text=in stock')).toBeVisible()\n141\t})\n142\t```\n143\t\n144\tInside the `instant()` callback, only the static shell is visible. After the callback finishes, dynamic content streams in and you can assert on the full page.\n145\t\n146\tThere is no need to write an `instant()` test for every navigation. Use `instant()` for the user flows that matter most. In the future build-time `instant` validation will be available to cover a broader set of navigation cases.\n147\t\n148\t## Fixing a navigation that blocks\n149\t\n150\tNow consider a different route, `/shop/[slug]`. For the sake of this example it has the same data requirements as `/store/[slug]`, but is implemented without local `` boundaries or caching:\n151\t\n152\t```tsx filename=\"app/shop/[slug]/page.tsx\"\n153\timport { db } from '@/lib/db'\n154\t\n155\texport default async function ProductPage(props: PageProps<'/shop/[slug]'>) {\n156\t const { slug } = await props.params\n157\t const product = await db.products.findBySlug(slug)\n158\t const item = await db.inventory.findBySlug(slug)\n159\t return (\n160\t \n161\t
{product.name} \n162\t
${product.price}
\n163\t
{item.count} in stock
\n164\t
\n165\t )\n166\t}\n167\t```\n168\t\n169\tThe root layout wraps `{children}` in a `` boundary:\n170\t\n171\t```tsx filename=\"app/layout.tsx\" highlight={9}\n172\texport default function RootLayout({\n173\t children,\n174\t}: {\n175\t children: React.ReactNode\n176\t}) {\n177\t return (\n178\t \n179\t \n180\t Loading...}>{children} \n181\t \n182\t \n183\t )\n184\t}\n185\t```\n186\t\n187\tOn an initial page load, the root `` catches the async work and streams the page in behind the `fallback`.\n188\t\n189\tEverything appears to work. But on a client navigation from `/shop/shoes` to `/shop/hats`, the shared layout is `/shop` and only the content below it re-renders. The root `` boundary is above that layout and is not triggered for this navigation. The page fetches uncached data with no local boundary, blocking the navigation until the server finishes rendering.\n190\t\n191\tYou can see this with the DevTools. Try a **page load**: the root `` catches everything and \"Loading...\" appears. Now try a **client navigation** between two `/shop/` pages: no prefetched UI shows up because there is no `` boundary below the shared layout. Navigations from other routes to `/shop/` appear blocked too.\n192\t\n193\t### Step 1: Add instant validation\n194\t\n195\tAdd an `unstable_instant` export to the page to surface the problem:\n196\t\n197\t```tsx filename=\"app/shop/[slug]/page.tsx\" highlight={3}\n198\timport { db } from '@/lib/db'\n199\t\n200\texport const unstable_instant = true\n201\t\n202\texport default async function ProductPage(props: PageProps<'/shop/[slug]'>) {\n203\t const { slug } = await props.params\n204\t const product = await db.products.findBySlug(slug)\n205\t const item = await db.inventory.findBySlug(slug)\n206\t return (\n207\t \n208\t
{product.name} \n209\t
${product.price}
\n210\t
{item.count} in stock
\n211\t
\n212\t )\n213\t}\n214\t```\n215\t\n216\tNext.js now simulates navigations at every shared layout boundary in the route. In this case, both components await `params` and access uncached data. These need to be wrapped by a `` boundary. The first thing validation catches is the `await params` at the top level.\n217\t\n218\t### Step 2: Fix the validation error\n219\t\n220\tThere is no `generateStaticParams` here, `slug` is only known at request time. Because awaiting `params` suspends, the page component can't do it at the top level. Instead, move the `await params` into separate components, pass `params` to each, and wrap them with ``.\n221\t\n222\tFor each component, decide:\n223\t\n224\t**Product details** (name, price) rarely change. Cache the data function with `use cache`:\n225\t\n226\t```tsx filename=\"app/shop/[slug]/page.tsx\"\n227\tasync function ProductInfo({ params }: { params: Promise<{ slug: string }> }) {\n228\t const { slug } = await params\n229\t const product = await getProduct(slug)\n230\t return (\n231\t <>\n232\t {product.name} \n233\t ${product.price}
\n234\t >\n235\t )\n236\t}\n237\t\n238\tasync function getProduct(slug: string) {\n239\t 'use cache'\n240\t return db.products.findBySlug(slug)\n241\t}\n242\t```\n243\t\n244\t> **Good to know:** In serverless deployments, in-memory caching with `\"use cache\"` will not persist across instances. Consider using [`\"use cache: remote\"`](/docs/app/api-reference/directives/use-cache-remote) for persistent caching.\n245\t\n246\t**Inventory** must be fresh each request. Leave it uncached:\n247\t\n248\t```tsx filename=\"app/shop/[slug]/page.tsx\"\n249\tasync function Inventory({ params }: { params: Promise<{ slug: string }> }) {\n250\t const { slug } = await params\n251\t const item = await db.inventory.findBySlug(slug)\n252\t return {item.count} in stock
\n253\t}\n254\t```\n255\t\n256\tThe page passes `params` to each component and wraps them with ``:\n257\t\n258\t```tsx filename=\"app/shop/[slug]/page.tsx\" highlight={4,9-14}\n259\timport { Suspense } from 'react'\n260\timport { db } from '@/lib/db'\n261\t\n262\texport const unstable_instant = true\n263\t\n264\texport default function ProductPage(props: PageProps<'/shop/[slug]'>) {\n265\t return (\n266\t \n267\t
Loading product...}>\n268\t \n269\t \n270\t
Checking availability...}>\n271\t \n272\t \n273\t
\n274\t )\n275\t}\n276\t```\n277\t\n278\tValidation passes. Open the DevTools and try a client navigation. The product name and price appear immediately, and \"Checking availability...\" shows where inventory will stream in.\n279\t\n280\t\n281\tHow validation simulates different navigations \n282\t\n283\tWhen you add `unstable_instant` to a route, Next.js checks both the initial page load and client navigations at different points in the route hierarchy.\n284\t\n285\tFor a route like `/shop/[slug]`, validation checks:\n286\t\n287\t- **Page load**: the full tree renders from the root. The root layout `` catches everything.\n288\t- **Client navigation** (e.g. from `/shop/shoes` to `/shop/hats`): the `/shop` layout is already mounted and only the page below it re-renders. A `` boundary in the root layout does not cover this navigation.\n289\t\n290\tEach case is validated independently. A `` boundary that covers one navigation path might not cover another. This is why a page can pass the page load check but fail for client navigations, and why catching these issues by hand is difficult as the number of routes grows.\n291\t\n292\t \n293\t\n294\t## Opting out with `instant = false`\n295\t\n296\tNot every layout or page can be instant. A dashboard layout that reads cookies and fetches user-specific data might be too dynamic for the first visit. You can set `instant = false` on any layout or page to exempt it from validation:\n297\t\n298\t```tsx filename=\"app/dashboard/layout.tsx\"\n299\texport const unstable_instant = false\n300\t```\n301\t\n302\tThis tells validation: navigating to `/dashboard` from outside does not need to be instant, but sibling navigations within it still do. Navigating from `/dashboard/a` to `/dashboard/b` can still be checked by adding `instant` to the page segments under `/dashboard`.\n303\t\n304\t## Next steps\n305\t\n306\t- [`instant` API reference](/docs/app/api-reference/file-conventions/route-segment-config/instant) for all configuration options, including runtime prefetching and incremental adoption with `instant = false`\n307\t- [Caching](/docs/app/getting-started/caching) for background on `use cache`, Suspense, and Partial Prerendering\n308\t- [Revalidating](/docs/app/getting-started/revalidating) for how to expire cached data with `cacheLife` and `updateTag`\n309\t",
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+ "content": "1\t---\n2\ttitle: Ensuring instant navigations\n3\tdescription: Learn how to structure your app to prefetch and prerender more content, providing instant page loads and client navigations.\n4\tnav_title: Instant navigation\n5\tversion: draft\n6\trelated:\n7\t title: Learn more\n8\t description: Explore the full instant API, caching, and revalidation.\n9\t links:\n10\t - app/api-reference/file-conventions/route-segment-config/instant\n11\t - app/getting-started/caching\n12\t - app/getting-started/revalidating\n13\t - app/guides/prefetching\n14\t---\n15\t\n16\t{/* AI agent hint: Always export `unstable_instant` from routes that should navigate instantly. It validates the caching structure during development. */}\n17\t\n18\tWith [Cache Components](/docs/app/api-reference/config/next-config-js/cacheComponents) enabled, `use cache` and `` let you control what gets cached and what streams in dynamically. When these are in the right place, client-side navigations are instant.\n19\t\n20\tThe [`unstable_instant`](/docs/app/api-reference/file-conventions/route-segment-config/instant) route segment config helps you place `` boundaries and `use cache` correctly. Add it to any page or layout and Next.js will check during development that navigating to that route produces an instant [static shell](/docs/app/glossary#static-shell).\n21\t\n22\tThis guide starts with a product page that loads instantly on navigation, then shows how to catch and fix a page where a misplaced `` boundary blocks the navigation. Nothing visible changes until the server finishes rendering.\n23\t\n24\t> **Good to know:** A navigation is considered **instant** when, assuming caches are warm, the page renders without waiting on any network request. Cached content appears immediately and anything uncached streams in behind a `` fallback. A navigation is considered **blocking** when uncached data outside a `` boundary forces the old page to stay visible until the server finishes rendering.\n25\t\n26\t## A page that navigates instantly\n27\t\n28\tA product page at `/store/[slug]` that fetches two pieces of data: product details (name, price) and live inventory.\n29\t\n30\t- There is no `generateStaticParams`, meaning `slug` is only known at request time\n31\t- Both components await `params` to get the `slug`, which suspends. Each has its own `` boundary\n32\t- **Product info** rarely changes and is queried from the db using a cached function\n33\t- **Inventory** must be fresh on each request. The db query is inside a `` boundary\n34\t\n35\t```tsx filename=\"app/store/[slug]/page.tsx\" highlight={4,9-14,32-34}\n36\timport { Suspense } from 'react'\n37\timport { db } from '@/lib/db'\n38\t\n39\texport const unstable_instant = true\n40\t\n41\texport default function ProductPage(props: PageProps<'/store/[slug]'>) {\n42\t return (\n43\t \n44\t
Loading product...}>\n45\t \n46\t \n47\t
Checking availability...}>\n48\t \n49\t \n50\t
\n51\t )\n52\t}\n53\t\n54\ttype Params = PageProps<'/store/[slug]'>['params']\n55\t\n56\tasync function ProductInfo({ params }: { params: Params }) {\n57\t const { slug } = await params\n58\t const product = await getProduct(slug)\n59\t return (\n60\t <>\n61\t {product.name} \n62\t ${product.price}
\n63\t >\n64\t )\n65\t}\n66\t\n67\tasync function getProduct(slug: string) {\n68\t 'use cache'\n69\t return db.products.findBySlug(slug)\n70\t}\n71\t\n72\tasync function Inventory({ params }: { params: Params }) {\n73\t const { slug } = await params\n74\t const item = await db.inventory.findBySlug(slug)\n75\t return {item.count} in stock
\n76\t}\n77\t```\n78\t\n79\tThe [`unstable_instant`](/docs/app/api-reference/file-conventions/route-segment-config/instant) export tells Next.js to check that navigating to this page from any other page in your app is instant. It does this during development. If a component would delay the transition (for example, by fetching uncached data without a local `` boundary), the error overlay tells you which one and suggests a fix.\n80\t\n81\tValidation runs automatically on every page load using the real request from your browser, so dynamic params like `[slug]` are checked against actual values as you navigate.\n82\t\n83\t## Visualize loading states with the Next.js DevTools\n84\t\n85\tThe Next.js DevTools let you see what users see on page loads and client navigations before dynamic data streams in. Use it to verify your loading states look right, check that the right content appears immediately, and iterate on where to place `` boundaries.\n86\t\n87\tThe Navigation Inspector is available when Cache Components is enabled:\n88\t\n89\t```ts filename=\"next.config.ts\" highlight={4}\n90\timport type { NextConfig } from 'next'\n91\t\n92\tconst nextConfig: NextConfig = {\n93\t cacheComponents: true,\n94\t}\n95\t\n96\texport default nextConfig\n97\t```\n98\t\n99\tOpen the Next.js DevTools and select **Navigation Inspector**, then click **Start Capturing**. While capturing is active:\n100\t\n101\t- Refresh the page to freeze the initial static UI generated for the route, before any dynamic data streams in.\n102\t- Click a link to freeze the prefetched UI for the destination route.\n103\t\n104\tWhen the UI is frozen, click **Continue Rendering** to let the current navigation finish while keeping the Navigation Inspector in capturing mode. Click **Stop Capturing** when you are done inspecting loading states.\n105\t\n106\tTry refreshing the product page. Two separate fallbacks appear: \"Loading product...\" and \"Checking availability...\". On the first visit the cache is cold and both fallbacks are visible. Navigate to the page again and the product name appears immediately from cache.\n107\t\n108\tNow click a link from `/store/shoes` to `/store/hats`. The product name and price appear immediately (cached). \"Checking availability...\" shows where inventory will stream in.\n109\t\n110\t> **Good to know:** Page loads and client navigations can produce different shells. Client-side hooks like `useSearchParams` suspend on page loads (search params are not known at build time) but resolve synchronously on client navigations (the router already has the params).\n111\t\n112\t\n113\tWhy page loads and client navigations produce different shells \n114\t\n115\tOn a page load, the entire page renders from the document root, including all layouts. Anything that suspends is caught by the nearest `` boundary in the entire document tree.\n116\t\n117\tOn a client navigation (clicking `next/link`), Next.js only re-renders below the layout that the source and destination routes share. Components above that shared layout are not re-rendered. This means that a `` boundary in the root layout covers everything on a page load, but for a client navigation between `/store/shoes` and `/store/hats`, the shared layout is `/store` and Next.js renders the part of the document below that point. The root `` sits above it and does not trigger for this navigation.\n118\t\n119\tThis is also why client-side hooks behave differently. `useSearchParams()` suspends during server rendering because search params are not available at build time. But on a client navigation, the router already has the params from the URL and the hook resolves synchronously. The same component can appear in the instant shell on a client navigation but behind a fallback on a page load.\n120\t\n121\t \n122\t\n123\t## Prevent regressions with e2e tests\n124\t\n125\tValidation catches structural problems during development. To prevent regressions as the codebase evolves, the `@next/playwright` package includes an `instant()` helper that asserts on exactly what appears in the instant shell:\n126\t\n127\t```typescript filename=\"e2e/navigation.test.ts\"\n128\timport { test, expect } from '@playwright/test'\n129\timport { instant } from '@next/playwright'\n130\t\n131\ttest('product title appears instantly', async ({ page }) => {\n132\t await page.goto('/store/shoes')\n133\t\n134\t await instant(page, async () => {\n135\t await page.click('a[href=\"/store/hats\"]')\n136\t await expect(page.locator('h1')).toContainText('Baseball Cap')\n137\t })\n138\t\n139\t // After instant() exits, dynamic content streams in\n140\t await expect(page.locator('text=in stock')).toBeVisible()\n141\t})\n142\t```\n143\t\n144\tInside the `instant()` callback, only the static shell is visible. After the callback finishes, dynamic content streams in and you can assert on the full page.\n145\t\n146\tThere is no need to write an `instant()` test for every navigation. Use `instant()` for the user flows that matter most. In the future build-time `instant` validation will be available to cover a broader set of navigation cases.\n147\t\n148\t## Fixing a navigation that blocks\n149\t\n150\tNow consider a different route, `/shop/[slug]`. For the sake of this example it has the same data requirements as `/store/[slug]`, but is implemented without local `` boundaries or caching:\n151\t\n152\t```tsx filename=\"app/shop/[slug]/page.tsx\"\n153\timport { db } from '@/lib/db'\n154\t\n155\texport default async function ProductPage(props: PageProps<'/shop/[slug]'>) {\n156\t const { slug } = await props.params\n157\t const product = await db.products.findBySlug(slug)\n158\t const item = await db.inventory.findBySlug(slug)\n159\t return (\n160\t \n161\t
{product.name} \n162\t
${product.price}
\n163\t
{item.count} in stock
\n164\t
\n165\t )\n166\t}\n167\t```\n168\t\n169\tThe root layout wraps `{children}` in a `` boundary:\n170\t\n171\t```tsx filename=\"app/layout.tsx\" highlight={9}\n172\texport default function RootLayout({\n173\t children,\n174\t}: {\n175\t children: React.ReactNode\n176\t}) {\n177\t return (\n178\t \n179\t \n180\t Loading...}>{children} \n181\t \n182\t \n183\t )\n184\t}\n185\t```\n186\t\n187\tOn an initial page load, the root `` catches the async work and streams the page in behind the `fallback`.\n188\t\n189\tEverything appears to work. But on a client navigation from `/shop/shoes` to `/shop/hats`, the shared layout is `/shop` and only the content below it re-renders. The root `` boundary is above that layout and is not triggered for this navigation. The page fetches uncached data with no local boundary, blocking the navigation until the server finishes rendering.\n190\t\n191\tYou can see this with the DevTools. Try a **page load**: the root `` catches everything and \"Loading...\" appears. Now try a **client navigation** between two `/shop/` pages: no prefetched UI shows up because there is no `` boundary below the shared layout. Navigations from other routes to `/shop/` appear blocked too.\n192\t\n193\t### Step 1: Add instant validation\n194\t\n195\tAdd an `unstable_instant` export to the page to surface the problem:\n196\t\n197\t```tsx filename=\"app/shop/[slug]/page.tsx\" highlight={3}\n198\timport { db } from '@/lib/db'\n199\t\n200\texport const unstable_instant = true\n201\t\n202\texport default async function ProductPage(props: PageProps<'/shop/[slug]'>) {\n203\t const { slug } = await props.params\n204\t const product = await db.products.findBySlug(slug)\n205\t const item = await db.inventory.findBySlug(slug)\n206\t return (\n207\t \n208\t
{product.name} \n209\t
${product.price}
\n210\t
{item.count} in stock
\n211\t
\n212\t )\n213\t}\n214\t```\n215\t\n216\tNext.js now simulates navigations at every shared layout boundary in the route. In this case, both components await `params` and access uncached data. These need to be wrapped by a `` boundary. The first thing validation catches is the `await params` at the top level.\n217\t\n218\t### Step 2: Fix the validation error\n219\t\n220\tThere is no `generateStaticParams` here, `slug` is only known at request time. Because awaiting `params` suspends, the page component can't do it at the top level. Instead, move the `await params` into separate components, pass `params` to each, and wrap them with ``.\n221\t\n222\tFor each component, decide:\n223\t\n224\t**Product details** (name, price) rarely change. Cache the data function with `use cache`:\n225\t\n226\t```tsx filename=\"app/shop/[slug]/page.tsx\"\n227\tasync function ProductInfo({ params }: { params: Promise<{ slug: string }> }) {\n228\t const { slug } = await params\n229\t const product = await getProduct(slug)\n230\t return (\n231\t <>\n232\t {product.name} \n233\t ${product.price}
\n234\t >\n235\t )\n236\t}\n237\t\n238\tasync function getProduct(slug: string) {\n239\t 'use cache'\n240\t return db.products.findBySlug(slug)\n241\t}\n242\t```\n243\t\n244\t> **Good to know:** In serverless deployments, in-memory caching with `\"use cache\"` will not persist across instances. Consider using [`\"use cache: remote\"`](/docs/app/api-reference/directives/use-cache-remote) for persistent caching.\n245\t\n246\t**Inventory** must be fresh each request. Leave it uncached:\n247\t\n248\t```tsx filename=\"app/shop/[slug]/page.tsx\"\n249\tasync function Inventory({ params }: { params: Promise<{ slug: string }> }) {\n250\t const { slug } = await params\n251\t const item = await db.inventory.findBySlug(slug)\n252\t return {item.count} in stock
\n253\t}\n254\t```\n255\t\n256\tThe page passes `params` to each component and wraps them with ``:\n257\t\n258\t```tsx filename=\"app/shop/[slug]/page.tsx\" highlight={4,9-14}\n259\timport { Suspense } from 'react'\n260\timport { db } from '@/lib/db'\n261\t\n262\texport const unstable_instant = true\n263\t\n264\texport default function ProductPage(props: PageProps<'/shop/[slug]'>) {\n265\t return (\n266\t \n267\t
Loading product...}>\n268\t \n269\t \n270\t
Checking availability...}>\n271\t \n272\t \n273\t
\n274\t )\n275\t}\n276\t```\n277\t\n278\tValidation passes. Open the DevTools and try a client navigation. The product name and price appear immediately, and \"Checking availability...\" shows where inventory will stream in.\n279\t\n280\t\n281\tHow validation simulates different navigations \n282\t\n283\tWhen you add `unstable_instant` to a route, Next.js checks both the initial page load and client navigations at different points in the route hierarchy.\n284\t\n285\tFor a route like `/shop/[slug]`, validation checks:\n286\t\n287\t- **Page load**: the full tree renders from the root. The root layout `` catches everything.\n288\t- **Client navigation** (e.g. from `/shop/shoes` to `/shop/hats`): the `/shop` layout is already mounted and only the page below it re-renders. A `` boundary in the root layout does not cover this navigation.\n289\t\n290\tEach case is validated independently. A `` boundary that covers one navigation path might not cover another. This is why a page can pass the page load check but fail for client navigations, and why catching these issues by hand is difficult as the number of routes grows.\n291\t\n292\t \n293\t\n294\t## Opting out with `instant = false`\n295\t\n296\tNot every layout or page can be instant. A dashboard layout that reads cookies and fetches user-specific data might be too dynamic for the first visit. You can set `instant = false` on any layout or page to exempt it from validation:\n297\t\n298\t```tsx filename=\"app/dashboard/layout.tsx\"\n299\texport const unstable_instant = false\n300\t```\n301\t\n302\tThis tells validation: navigating to `/dashboard` from outside does not need to be instant, but sibling navigations within it still do. Navigating from `/dashboard/a` to `/dashboard/b` can still be checked by adding `instant` to the page segments under `/dashboard`.\n303\t\n304\t## Next steps\n305\t\n306\t- [`instant` API reference](/docs/app/api-reference/file-conventions/route-segment-config/instant) for all configuration options, including runtime prefetching and incremental adoption with `instant = false`\n307\t- [Caching](/docs/app/getting-started/caching) for background on `use cache`, Suspense, and Partial Prerendering\n308\t- [Revalidating](/docs/app/getting-started/revalidating) for how to expire cached data with `cacheLife` and `updateTag`\n309\t"
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+ "version": "2.1.170",
+ "gitBranch": "master"
+ }
+ }
+ ],
+ "summary": {
+ "totalTurns": 3,
+ "toolCalls": {
+ "file_read": 6,
+ "file_write": 1,
+ "file_edit": 0,
+ "shell": 5,
+ "web_fetch": 0,
+ "web_search": 0,
+ "glob": 0,
+ "grep": 0,
+ "list_dir": 0,
+ "agent_task": 0,
+ "unknown": 0
+ },
+ "totalToolCalls": 12,
+ "webFetches": [],
+ "filesRead": [
+ "/workspace/app/product/page.tsx",
+ "/workspace/app/page.tsx",
+ "/workspace/lib/data.ts",
+ "/workspace/app/layout.tsx",
+ "/workspace/node_modules/next/dist/docs/01-app/02-guides/instant-navigation.md",
+ "/workspace/next.config.ts"
+ ],
+ "filesModified": [
+ "/workspace/app/product/page.tsx"
+ ],
+ "shellCommands": [
+ {
+ "command": "find /workspace -type d \\( -name node_modules -o -name .git -o -name .next \\) -prune -o -type f -print | head -50",
+ "success": true
+ },
+ {
+ "command": "ls /workspace/node_modules/next/dist/docs/ 2>/dev/null",
+ "success": true
+ },
+ {
+ "command": "node -e \"console.log(require('/workspace/node_modules/next/package.json').version)\"; ls /workspace/node_modules/next/dist/docs/01-app",
+ "success": true
+ },
+ {
+ "command": "ls /workspace/node_modules/next/dist/docs/01-app/01-getting-started /workspace/node_modules/next/dist/docs/01-app/02-guides | head -60",
+ "success": true
+ },
+ {
+ "command": "npm run build 2>&1 | tail -30",
+ "success": true
+ }
+ ],
+ "errors": [],
+ "thinkingBlocks": 0
+ },
+ "parseSuccess": true
+}
\ No newline at end of file
diff --git a/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/run-2/outputs/eval.txt b/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/run-2/outputs/eval.txt
new file mode 100644
index 000000000..79c907f03
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/run-2/outputs/eval.txt
@@ -0,0 +1,59 @@
+
+ RUN v3.2.6 /workspace
+
+ ❯ EVAL.ts (1 test | 1 failed) 7ms
+ × unstable_instant exported from the product route 6ms
+ → expected 'import { Suspense } from \'react\'\ni…' to match /prefetch\s*:\s*['"]static['"]/
+
+ Test Files 1 failed (1)
+ Tests 1 failed (1)
+ Start at 23:52:34
+ Duration 206ms (transform 28ms, setup 0ms, collect 28ms, tests 7ms, environment 0ms, prepare 61ms)
+
+
+⎯⎯⎯⎯⎯⎯⎯ Failed Tests 1 ⎯⎯⎯⎯⎯⎯⎯
+
+ FAIL EVAL.ts > unstable_instant exported from the product route
+AssertionError: expected 'import { Suspense } from \'react\'\ni…' to match /prefetch\s*:\s*['"]static['"]/
+
+[32m- Expected:[39m
+/prefetch\s*:\s*['"]static['"]/
+
+[31m+ Received:[39m
+"import { Suspense } from 'react'
+import { getInventory } from '@/lib/data'
+
+export const unstable_instant = true
+
+export default function ProductPage() {
+ return (
+
+ Premium Widget
+ Checking availability...}>
+
+
+
+ )
+}
+
+async function Inventory() {
+ const inventory = await getInventory()
+ return (
+ <>
+ {inventory.count} in stock
+ Price: ${inventory.price}
+ >
+ )
+}
+"
+
+ ❯ EVAL.ts:68:32
+ 66| /export\s+(const|var|let)\s+unstable_instant\b/
+ 67| )
+ 68| expect(productPage!.content).toMatch(/prefetch\s*:\s*['"]static['"]/)
+ | ^
+ 69| })
+ 70|
+
+⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯[1/1]⎯
+
diff --git a/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/run-2/outputs/scripts/build.txt b/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/run-2/outputs/scripts/build.txt
new file mode 100644
index 000000000..0bd65a340
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/run-2/outputs/scripts/build.txt
@@ -0,0 +1,28 @@
+
+> build
+> next build
+
+▲ Next.js 16.3.0-canary.46 (Turbopack)
+- Cache Components enabled
+
+ Creating an optimized production build ...
+✓ Compiled successfully in 4.0s
+ Running TypeScript ...
+ Finished TypeScript in 1739ms ...
+ Collecting page data using 1 worker ...
+ Generating static pages using 1 worker (0/4) ...
+ Generating static pages using 1 worker (1/4)
+ Generating static pages using 1 worker (2/4)
+ Generating static pages using 1 worker (3/4)
+✓ Generating static pages using 1 worker (4/4) in 164ms
+ Finalizing page optimization ...
+
+Route (app)
+┌ ○ /
+├ ○ /_not-found
+└ ◐ /product
+
+
+○ (Static) prerendered as static content
+◐ (Partial Prerender) prerendered as static HTML with dynamic server-streamed content
+
diff --git a/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/run-2/result.json b/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/run-2/result.json
new file mode 100644
index 000000000..03ba92328
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/run-2/result.json
@@ -0,0 +1,68 @@
+{
+ "status": "failed",
+ "duration": 219.548,
+ "model": "claude-fable-5",
+ "transcriptPath": "./transcript.json",
+ "transcriptRawPath": "./transcript-raw.jsonl",
+ "o11y": {
+ "totalTurns": 3,
+ "toolCalls": {
+ "file_read": 4,
+ "file_write": 1,
+ "file_edit": 0,
+ "shell": 6,
+ "web_fetch": 0,
+ "web_search": 0,
+ "glob": 0,
+ "grep": 0,
+ "list_dir": 0,
+ "agent_task": 0,
+ "unknown": 0
+ },
+ "totalToolCalls": 11,
+ "webFetches": [],
+ "filesRead": [
+ "/workspace/app/product/page.tsx",
+ "/workspace/app/page.tsx",
+ "/workspace/lib/data.ts",
+ "/workspace/node_modules/next/dist/docs/01-app/02-guides/instant-navigation.md"
+ ],
+ "filesModified": [
+ "/workspace/app/product/page.tsx"
+ ],
+ "shellCommands": [
+ {
+ "command": "find /workspace -maxdepth 3 -type d -not -path '*/node_modules*' -not -path '*/.git*' && echo '---' && ls /workspace/node_modules/next/dist/docs/ 2>/dev/null",
+ "success": true
+ },
+ {
+ "command": "find /workspace/app /workspace/lib -type f | head -50 && echo '---' && cat /workspace/package.json",
+ "success": true
+ },
+ {
+ "command": "ls /workspace/node_modules/next/dist/docs/01-app/ && ls /workspace/node_modules/next/dist/docs/01-app/* 2>/dev/null | head -60",
+ "success": true
+ },
+ {
+ "command": "ls /workspace/*.{ts,js,mjs} 2>/dev/null; cat /workspace/next.config.* 2>/dev/null; cat /workspace/app/layout.tsx",
+ "success": true
+ },
+ {
+ "command": "npx next build 2>&1 | tail -30",
+ "success": true
+ },
+ {
+ "command": "grep -o 'Premium Widget' /workspace/.next/server/app/product.html && grep -o 'Checking availability' /workspace/.next/server/app/product.html",
+ "success": true
+ }
+ ],
+ "errors": [],
+ "thinkingBlocks": 0
+ },
+ "outputPaths": {
+ "eval": "./outputs/eval.txt",
+ "scripts": {
+ "build": "./outputs/scripts/build.txt"
+ }
+ }
+}
\ No newline at end of file
diff --git a/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/run-2/transcript-raw.jsonl b/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/run-2/transcript-raw.jsonl
new file mode 100644
index 000000000..0f284f547
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/run-2/transcript-raw.jsonl
@@ -0,0 +1,44 @@
+{"type":"queue-operation","operation":"enqueue","timestamp":"2026-06-09T23:51:15.408Z","sessionId":"8e393a7c-2d8c-4cf7-bf08-fcbd345881fe","content":"Navigating from home to the product page is slow. The title should appear immediately.\n"}
+{"type":"queue-operation","operation":"dequeue","timestamp":"2026-06-09T23:51:15.409Z","sessionId":"8e393a7c-2d8c-4cf7-bf08-fcbd345881fe"}
+{"parentUuid":null,"isSidechain":false,"promptId":"178d8825-74ec-41e6-bce2-cbb27dfc3c20","type":"user","message":{"role":"user","content":"Navigating from home to the product page is slow. The title should appear immediately.\n"},"uuid":"91b260fd-1db9-4a6b-ad2d-13d487df5952","timestamp":"2026-06-09T23:51:15.464Z","permissionMode":"bypassPermissions","promptSource":"sdk","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"8e393a7c-2d8c-4cf7-bf08-fcbd345881fe","version":"2.1.170","gitBranch":"master"}
+{"parentUuid":"91b260fd-1db9-4a6b-ad2d-13d487df5952","isSidechain":false,"attachment":{"type":"skill_listing","content":"- deep-research: Deep research harness — fan-out web searches, fetch sources, adversarially verify claims, synthesize a cited report. - When the user wants a deep, multi-source, fact-checked research report on any topic. BEFORE invoking, check if the question is specific enough to research directly — if underspecified (e.g., \"what car to buy\" without budget/use-case/region), ask 2-3 clarifying questions to narrow scope. Then pass the refined question as args, weaving the answers in.\n- update-config: Use this skill to configure the Claude Code harness via settings.json. Automated behaviors (\"from now on when X\", \"each time X\", \"whenever X\", \"before/after X\") require hooks configured in settings.json - the harness executes these, not Claude, so memory/preferences cannot fulfill them. Also use for: permissions (\"allow X\", \"add permission\", \"move permission to\"), env vars (\"set X=Y\"), hook troubleshooting, or any changes to settings.json/settings.local.json files. Examples: \"allow npm commands\", \"add bq permission to global settings\", \"move permission to user settings\", \"set DEBUG=true\", \"when claude stops show X\". For simple settings like theme/model, suggest the /config command.\n- keybindings-help: Use when the user wants to customize keyboard shortcuts, rebind keys, add chord bindings, or modify ~/.claude/keybindings.json. Examples: \"rebind ctrl+s\", \"add a chord shortcut\", \"change the submit key\", \"customize keybindings\".\n- verify: Verify that a code change actually does what it's supposed to by running the app and observing behavior. Use when asked to verify a PR, confirm a fix works, test a change manually, check that a feature works, or validate local changes before pushing.\n- code-review: Review the current diff for correctness bugs and reuse/simplification/efficiency cleanups at the given effort level (low/medium: fewer, high-confidence findings; high→max: broader coverage, may include uncertain findings). Pass --comment to post findings as inline PR comments, or --fix to apply the findings to the working tree after the review.\n- simplify: Review the changed code for reuse, simplification, efficiency, and altitude cleanups, then apply the fixes. Quality only — it does not hunt for bugs; use /code-review for that.\n- fewer-permission-prompts: Scan your transcripts for common read-only Bash and MCP tool calls, then add a prioritized allowlist to project .claude/settings.json to reduce permission prompts.\n- loop: Run a prompt or slash command on a recurring interval (e.g. /loop 5m /foo, defaults to 10m) - When the user wants to set up a recurring task, poll for status, or run something repeatedly on an interval (e.g. \"check the deploy every 5 minutes\", \"keep running /babysit-prs\"). Do NOT invoke for one-off tasks.\n- claude-api: Reference for the Claude API / Anthropic SDK — model ids, pricing, params, streaming, tool use, MCP, agents, caching, token counting, model migration.\nTRIGGER — read BEFORE opening the target file; don't skip because it \"looks like a one-liner\" — whenever: the prompt names Claude/Anthropic in any form (Claude, Anthropic, Fable, Opus, Sonnet, Haiku, `anthropic`, `@anthropic-ai`, `claude-*`, `us.anthropic.*`, `[1m]`); the user asks about an LLM (pricing/model choice/limits/caching) — never answer from memory; OR the task is LLM-shaped with provider unstated (agent/MCP/tool-definition/multi-agent/RAG/LLM-judge/computer-use; generate/summarize/extract/classify/rewrite/converse over NL; debugging refusals/cutoffs/streaming/tool-calls/tokens).\nSKIP only when another provider is being worked on (overrides all triggers): OpenAI/GPT/Gemini/Llama/Mistral/Cohere/Ollama named in the query; OR `grep -rE 'openai|langchain_openai|google.generativeai|genai|mistralai|cohere|ollama'` over the project hits (run this grep FIRST if no provider named — don't Read the file).\n- run: Launch and drive this project's app to see a change working. Use when asked to run, start, or screenshot the app, or to confirm a change works in the real app (not just tests). First looks for a project skill that already covers launching the app; otherwise falls back to built-in patterns per project type (CLI, server, TUI, Electron, browser-driven, library).\n- init: Initialize a new CLAUDE.md file with codebase documentation\n- review: Review a pull request\n- security-review: Complete a security review of the pending changes on the current branch","skillCount":13,"isInitial":true,"names":["deep-research","update-config","keybindings-help","verify","code-review","simplify","fewer-permission-prompts","loop","claude-api","run","init","review","security-review"]},"type":"attachment","uuid":"4f06ed1e-8613-44fc-897e-47cb5cb4c7f3","timestamp":"2026-06-09T23:51:15.464Z","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"8e393a7c-2d8c-4cf7-bf08-fcbd345881fe","version":"2.1.170","gitBranch":"master"}
+{"type":"ai-title","aiTitle":"Speed up product page navigation","sessionId":"8e393a7c-2d8c-4cf7-bf08-fcbd345881fe"}
+{"parentUuid":"4f06ed1e-8613-44fc-897e-47cb5cb4c7f3","isSidechain":false,"message":{"id":"gen_01KTQCR9T85EZVX8HFCWH970J5","type":"message","role":"assistant","content":[{"type":"thinking","thinking":"","signature":"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"}],"model":"claude-fable-5","stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":5156,"cache_read_input_tokens":26816,"output_tokens":296,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":0,"ephemeral_5m_input_tokens":5156},"inference_geo":"","iterations":[],"speed":"standard"},"stop_details":null},"type":"assistant","uuid":"3584b193-43cd-4907-bad4-35b0469b2863","timestamp":"2026-06-09T23:51:19.406Z","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"8e393a7c-2d8c-4cf7-bf08-fcbd345881fe","version":"2.1.170","gitBranch":"master"}
+{"parentUuid":"3584b193-43cd-4907-bad4-35b0469b2863","isSidechain":false,"message":{"id":"gen_01KTQCR9T85EZVX8HFCWH970J5","type":"message","role":"assistant","content":[{"type":"text","text":"I'll look at the project structure and the relevant docs first, since this Next.js version may differ from what I know."}],"model":"claude-fable-5","stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":5156,"cache_read_input_tokens":26816,"output_tokens":296,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":0,"ephemeral_5m_input_tokens":5156},"inference_geo":"","iterations":[],"speed":"standard"},"stop_details":null},"type":"assistant","uuid":"05721f8a-1292-4bd8-93b9-a8fb10ac7b1f","timestamp":"2026-06-09T23:51:20.367Z","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"8e393a7c-2d8c-4cf7-bf08-fcbd345881fe","version":"2.1.170","gitBranch":"master"}
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+{"parentUuid":"1ce1f838-5b11-4263-8a00-8fd80f062792","isSidechain":false,"promptId":"178d8825-74ec-41e6-bce2-cbb27dfc3c20","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_011wwRBo3MtixPNKGcnYyRQD","type":"tool_result","content":"1\t---\n2\ttitle: Ensuring instant navigations\n3\tdescription: Learn how to structure your app to prefetch and prerender more content, providing instant page loads and client navigations.\n4\tnav_title: Instant navigation\n5\tversion: draft\n6\trelated:\n7\t title: Learn more\n8\t description: Explore the full instant API, caching, and revalidation.\n9\t links:\n10\t - app/api-reference/file-conventions/route-segment-config/instant\n11\t - app/getting-started/caching\n12\t - app/getting-started/revalidating\n13\t - app/guides/prefetching\n14\t---\n15\t\n16\t{/* AI agent hint: Always export `unstable_instant` from routes that should navigate instantly. It validates the caching structure during development. */}\n17\t\n18\tWith [Cache Components](/docs/app/api-reference/config/next-config-js/cacheComponents) enabled, `use cache` and `` let you control what gets cached and what streams in dynamically. When these are in the right place, client-side navigations are instant.\n19\t\n20\tThe [`unstable_instant`](/docs/app/api-reference/file-conventions/route-segment-config/instant) route segment config helps you place `` boundaries and `use cache` correctly. Add it to any page or layout and Next.js will check during development that navigating to that route produces an instant [static shell](/docs/app/glossary#static-shell).\n21\t\n22\tThis guide starts with a product page that loads instantly on navigation, then shows how to catch and fix a page where a misplaced `` boundary blocks the navigation. Nothing visible changes until the server finishes rendering.\n23\t\n24\t> **Good to know:** A navigation is considered **instant** when, assuming caches are warm, the page renders without waiting on any network request. Cached content appears immediately and anything uncached streams in behind a `` fallback. A navigation is considered **blocking** when uncached data outside a `` boundary forces the old page to stay visible until the server finishes rendering.\n25\t\n26\t## A page that navigates instantly\n27\t\n28\tA product page at `/store/[slug]` that fetches two pieces of data: product details (name, price) and live inventory.\n29\t\n30\t- There is no `generateStaticParams`, meaning `slug` is only known at request time\n31\t- Both components await `params` to get the `slug`, which suspends. Each has its own `` boundary\n32\t- **Product info** rarely changes and is queried from the db using a cached function\n33\t- **Inventory** must be fresh on each request. The db query is inside a `` boundary\n34\t\n35\t```tsx filename=\"app/store/[slug]/page.tsx\" highlight={4,9-14,32-34}\n36\timport { Suspense } from 'react'\n37\timport { db } from '@/lib/db'\n38\t\n39\texport const unstable_instant = true\n40\t\n41\texport default function ProductPage(props: PageProps<'/store/[slug]'>) {\n42\t return (\n43\t \n44\t
Loading product...}>\n45\t \n46\t \n47\t
Checking availability...}>\n48\t \n49\t \n50\t
\n51\t )\n52\t}\n53\t\n54\ttype Params = PageProps<'/store/[slug]'>['params']\n55\t\n56\tasync function ProductInfo({ params }: { params: Params }) {\n57\t const { slug } = await params\n58\t const product = await getProduct(slug)\n59\t return (\n60\t <>\n61\t {product.name} \n62\t ${product.price}
\n63\t >\n64\t )\n65\t}\n66\t\n67\tasync function getProduct(slug: string) {\n68\t 'use cache'\n69\t return db.products.findBySlug(slug)\n70\t}\n71\t\n72\tasync function Inventory({ params }: { params: Params }) {\n73\t const { slug } = await params\n74\t const item = await db.inventory.findBySlug(slug)\n75\t return {item.count} in stock
\n76\t}\n77\t```\n78\t\n79\tThe [`unstable_instant`](/docs/app/api-reference/file-conventions/route-segment-config/instant) export tells Next.js to check that navigating to this page from any other page in your app is instant. It does this during development. If a component would delay the transition (for example, by fetching uncached data without a local `` boundary), the error overlay tells you which one and suggests a fix.\n80\t\n81\tValidation runs automatically on every page load using the real request from your browser, so dynamic params like `[slug]` are checked against actual values as you navigate.\n82\t\n83\t## Visualize loading states with the Next.js DevTools\n84\t\n85\tThe Next.js DevTools let you see what users see on page loads and client navigations before dynamic data streams in. Use it to verify your loading states look right, check that the right content appears immediately, and iterate on where to place `` boundaries.\n86\t\n87\tThe Navigation Inspector is available when Cache Components is enabled:\n88\t\n89\t```ts filename=\"next.config.ts\" highlight={4}\n90\timport type { NextConfig } from 'next'\n91\t\n92\tconst nextConfig: NextConfig = {\n93\t cacheComponents: true,\n94\t}\n95\t\n96\texport default nextConfig\n97\t```\n98\t\n99\tOpen the Next.js DevTools and select **Navigation Inspector**, then click **Start Capturing**. While capturing is active:\n100\t\n101\t- Refresh the page to freeze the initial static UI generated for the route, before any dynamic data streams in.\n102\t- Click a link to freeze the prefetched UI for the destination route.\n103\t\n104\tWhen the UI is frozen, click **Continue Rendering** to let the current navigation finish while keeping the Navigation Inspector in capturing mode. Click **Stop Capturing** when you are done inspecting loading states.\n105\t\n106\tTry refreshing the product page. Two separate fallbacks appear: \"Loading product...\" and \"Checking availability...\". On the first visit the cache is cold and both fallbacks are visible. Navigate to the page again and the product name appears immediately from cache.\n107\t\n108\tNow click a link from `/store/shoes` to `/store/hats`. The product name and price appear immediately (cached). \"Checking availability...\" shows where inventory will stream in.\n109\t\n110\t> **Good to know:** Page loads and client navigations can produce different shells. Client-side hooks like `useSearchParams` suspend on page loads (search params are not known at build time) but resolve synchronously on client navigations (the router already has the params).\n111\t\n112\t\n113\tWhy page loads and client navigations produce different shells \n114\t\n115\tOn a page load, the entire page renders from the document root, including all layouts. Anything that suspends is caught by the nearest `` boundary in the entire document tree.\n116\t\n117\tOn a client navigation (clicking `next/link`), Next.js only re-renders below the layout that the source and destination routes share. Components above that shared layout are not re-rendered. This means that a `` boundary in the root layout covers everything on a page load, but for a client navigation between `/store/shoes` and `/store/hats`, the shared layout is `/store` and Next.js renders the part of the document below that point. The root `` sits above it and does not trigger for this navigation.\n118\t\n119\tThis is also why client-side hooks behave differently. `useSearchParams()` suspends during server rendering because search params are not available at build time. But on a client navigation, the router already has the params from the URL and the hook resolves synchronously. The same component can appear in the instant shell on a client navigation but behind a fallback on a page load.\n120\t\n121\t \n122\t\n123\t## Prevent regressions with e2e tests\n124\t\n125\tValidation catches structural problems during development. To prevent regressions as the codebase evolves, the `@next/playwright` package includes an `instant()` helper that asserts on exactly what appears in the instant shell:\n126\t\n127\t```typescript filename=\"e2e/navigation.test.ts\"\n128\timport { test, expect } from '@playwright/test'\n129\timport { instant } from '@next/playwright'\n130\t\n131\ttest('product title appears instantly', async ({ page }) => {\n132\t await page.goto('/store/shoes')\n133\t\n134\t await instant(page, async () => {\n135\t await page.click('a[href=\"/store/hats\"]')\n136\t await expect(page.locator('h1')).toContainText('Baseball Cap')\n137\t })\n138\t\n139\t // After instant() exits, dynamic content streams in\n140\t await expect(page.locator('text=in stock')).toBeVisible()\n141\t})\n142\t```\n143\t\n144\tInside the `instant()` callback, only the static shell is visible. After the callback finishes, dynamic content streams in and you can assert on the full page.\n145\t\n146\tThere is no need to write an `instant()` test for every navigation. Use `instant()` for the user flows that matter most. In the future build-time `instant` validation will be available to cover a broader set of navigation cases.\n147\t\n148\t## Fixing a navigation that blocks\n149\t\n150\tNow consider a different route, `/shop/[slug]`. For the sake of this example it has the same data requirements as `/store/[slug]`, but is implemented without local `` boundaries or caching:\n151\t\n152\t```tsx filename=\"app/shop/[slug]/page.tsx\"\n153\timport { db } from '@/lib/db'\n154\t\n155\texport default async function ProductPage(props: PageProps<'/shop/[slug]'>) {\n156\t const { slug } = await props.params\n157\t const product = await db.products.findBySlug(slug)\n158\t const item = await db.inventory.findBySlug(slug)\n159\t return (\n160\t \n161\t
{product.name} \n162\t
${product.price}
\n163\t
{item.count} in stock
\n164\t
\n165\t )\n166\t}\n167\t```\n168\t\n169\tThe root layout wraps `{children}` in a `` boundary:\n170\t\n171\t```tsx filename=\"app/layout.tsx\" highlight={9}\n172\texport default function RootLayout({\n173\t children,\n174\t}: {\n175\t children: React.ReactNode\n176\t}) {\n177\t return (\n178\t \n179\t \n180\t Loading...}>{children} \n181\t \n182\t \n183\t )\n184\t}\n185\t```\n186\t\n187\tOn an initial page load, the root `` catches the async work and streams the page in behind the `fallback`.\n188\t\n189\tEverything appears to work. But on a client navigation from `/shop/shoes` to `/shop/hats`, the shared layout is `/shop` and only the content below it re-renders. The root `` boundary is above that layout and is not triggered for this navigation. The page fetches uncached data with no local boundary, blocking the navigation until the server finishes rendering.\n190\t\n191\tYou can see this with the DevTools. Try a **page load**: the root `` catches everything and \"Loading...\" appears. Now try a **client navigation** between two `/shop/` pages: no prefetched UI shows up because there is no `` boundary below the shared layout. Navigations from other routes to `/shop/` appear blocked too.\n192\t\n193\t### Step 1: Add instant validation\n194\t\n195\tAdd an `unstable_instant` export to the page to surface the problem:\n196\t\n197\t```tsx filename=\"app/shop/[slug]/page.tsx\" highlight={3}\n198\timport { db } from '@/lib/db'\n199\t\n200\texport const unstable_instant = true\n201\t\n202\texport default async function ProductPage(props: PageProps<'/shop/[slug]'>) {\n203\t const { slug } = await props.params\n204\t const product = await db.products.findBySlug(slug)\n205\t const item = await db.inventory.findBySlug(slug)\n206\t return (\n207\t \n208\t
{product.name} \n209\t
${product.price}
\n210\t
{item.count} in stock
\n211\t
\n212\t )\n213\t}\n214\t```\n215\t\n216\tNext.js now simulates navigations at every shared layout boundary in the route. In this case, both components await `params` and access uncached data. These need to be wrapped by a `` boundary. The first thing validation catches is the `await params` at the top level.\n217\t\n218\t### Step 2: Fix the validation error\n219\t\n220\tThere is no `generateStaticParams` here, `slug` is only known at request time. Because awaiting `params` suspends, the page component can't do it at the top level. Instead, move the `await params` into separate components, pass `params` to each, and wrap them with ``.\n221\t\n222\tFor each component, decide:\n223\t\n224\t**Product details** (name, price) rarely change. Cache the data function with `use cache`:\n225\t\n226\t```tsx filename=\"app/shop/[slug]/page.tsx\"\n227\tasync function ProductInfo({ params }: { params: Promise<{ slug: string }> }) {\n228\t const { slug } = await params\n229\t const product = await getProduct(slug)\n230\t return (\n231\t <>\n232\t {product.name} \n233\t ${product.price}
\n234\t >\n235\t )\n236\t}\n237\t\n238\tasync function getProduct(slug: string) {\n239\t 'use cache'\n240\t return db.products.findBySlug(slug)\n241\t}\n242\t```\n243\t\n244\t> **Good to know:** In serverless deployments, in-memory caching with `\"use cache\"` will not persist across instances. Consider using [`\"use cache: remote\"`](/docs/app/api-reference/directives/use-cache-remote) for persistent caching.\n245\t\n246\t**Inventory** must be fresh each request. Leave it uncached:\n247\t\n248\t```tsx filename=\"app/shop/[slug]/page.tsx\"\n249\tasync function Inventory({ params }: { params: Promise<{ slug: string }> }) {\n250\t const { slug } = await params\n251\t const item = await db.inventory.findBySlug(slug)\n252\t return {item.count} in stock
\n253\t}\n254\t```\n255\t\n256\tThe page passes `params` to each component and wraps them with ``:\n257\t\n258\t```tsx filename=\"app/shop/[slug]/page.tsx\" highlight={4,9-14}\n259\timport { Suspense } from 'react'\n260\timport { db } from '@/lib/db'\n261\t\n262\texport const unstable_instant = true\n263\t\n264\texport default function ProductPage(props: PageProps<'/shop/[slug]'>) {\n265\t return (\n266\t \n267\t
Loading product...}>\n268\t \n269\t \n270\t
Checking availability...}>\n271\t \n272\t \n273\t
\n274\t )\n275\t}\n276\t```\n277\t\n278\tValidation passes. Open the DevTools and try a client navigation. The product name and price appear immediately, and \"Checking availability...\" shows where inventory will stream in.\n279\t\n280\t\n281\tHow validation simulates different navigations \n282\t\n283\tWhen you add `unstable_instant` to a route, Next.js checks both the initial page load and client navigations at different points in the route hierarchy.\n284\t\n285\tFor a route like `/shop/[slug]`, validation checks:\n286\t\n287\t- **Page load**: the full tree renders from the root. The root layout `` catches everything.\n288\t- **Client navigation** (e.g. from `/shop/shoes` to `/shop/hats`): the `/shop` layout is already mounted and only the page below it re-renders. A `` boundary in the root layout does not cover this navigation.\n289\t\n290\tEach case is validated independently. A `` boundary that covers one navigation path might not cover another. This is why a page can pass the page load check but fail for client navigations, and why catching these issues by hand is difficult as the number of routes grows.\n291\t\n292\t \n293\t\n294\t## Opting out with `instant = false`\n295\t\n296\tNot every layout or page can be instant. A dashboard layout that reads cookies and fetches user-specific data might be too dynamic for the first visit. You can set `instant = false` on any layout or page to exempt it from validation:\n297\t\n298\t```tsx filename=\"app/dashboard/layout.tsx\"\n299\texport const unstable_instant = false\n300\t```\n301\t\n302\tThis tells validation: navigating to `/dashboard` from outside does not need to be instant, but sibling navigations within it still do. Navigating from `/dashboard/a` to `/dashboard/b` can still be checked by adding `instant` to the page segments under `/dashboard`.\n303\t\n304\t## Next steps\n305\t\n306\t- [`instant` API reference](/docs/app/api-reference/file-conventions/route-segment-config/instant) for all configuration options, including runtime prefetching and incremental adoption with `instant = false`\n307\t- [Caching](/docs/app/getting-started/caching) for background on `use cache`, Suspense, and Partial Prerendering\n308\t- [Revalidating](/docs/app/getting-started/revalidating) for how to expire cached data with `cacheLife` and `updateTag`\n309\t"}]},"uuid":"5cd57b98-a6f2-49de-8068-9b8cb529e7b7","timestamp":"2026-06-09T23:51:42.119Z","toolUseResult":{"type":"text","file":{"filePath":"/workspace/node_modules/next/dist/docs/01-app/02-guides/instant-navigation.md","content":"---\ntitle: Ensuring instant navigations\ndescription: Learn how to structure your app to prefetch and prerender more content, providing instant page loads and client navigations.\nnav_title: Instant navigation\nversion: draft\nrelated:\n title: Learn more\n description: Explore the full instant API, caching, and revalidation.\n links:\n - app/api-reference/file-conventions/route-segment-config/instant\n - app/getting-started/caching\n - app/getting-started/revalidating\n - app/guides/prefetching\n---\n\n{/* AI agent hint: Always export `unstable_instant` from routes that should navigate instantly. It validates the caching structure during development. */}\n\nWith [Cache Components](/docs/app/api-reference/config/next-config-js/cacheComponents) enabled, `use cache` and `` let you control what gets cached and what streams in dynamically. When these are in the right place, client-side navigations are instant.\n\nThe [`unstable_instant`](/docs/app/api-reference/file-conventions/route-segment-config/instant) route segment config helps you place `` boundaries and `use cache` correctly. Add it to any page or layout and Next.js will check during development that navigating to that route produces an instant [static shell](/docs/app/glossary#static-shell).\n\nThis guide starts with a product page that loads instantly on navigation, then shows how to catch and fix a page where a misplaced `` boundary blocks the navigation. Nothing visible changes until the server finishes rendering.\n\n> **Good to know:** A navigation is considered **instant** when, assuming caches are warm, the page renders without waiting on any network request. Cached content appears immediately and anything uncached streams in behind a `` fallback. A navigation is considered **blocking** when uncached data outside a `` boundary forces the old page to stay visible until the server finishes rendering.\n\n## A page that navigates instantly\n\nA product page at `/store/[slug]` that fetches two pieces of data: product details (name, price) and live inventory.\n\n- There is no `generateStaticParams`, meaning `slug` is only known at request time\n- Both components await `params` to get the `slug`, which suspends. Each has its own `` boundary\n- **Product info** rarely changes and is queried from the db using a cached function\n- **Inventory** must be fresh on each request. The db query is inside a `` boundary\n\n```tsx filename=\"app/store/[slug]/page.tsx\" highlight={4,9-14,32-34}\nimport { Suspense } from 'react'\nimport { db } from '@/lib/db'\n\nexport const unstable_instant = true\n\nexport default function ProductPage(props: PageProps<'/store/[slug]'>) {\n return (\n \n
Loading product...}>\n \n \n
Checking availability...}>\n \n \n
\n )\n}\n\ntype Params = PageProps<'/store/[slug]'>['params']\n\nasync function ProductInfo({ params }: { params: Params }) {\n const { slug } = await params\n const product = await getProduct(slug)\n return (\n <>\n {product.name} \n ${product.price}
\n >\n )\n}\n\nasync function getProduct(slug: string) {\n 'use cache'\n return db.products.findBySlug(slug)\n}\n\nasync function Inventory({ params }: { params: Params }) {\n const { slug } = await params\n const item = await db.inventory.findBySlug(slug)\n return {item.count} in stock
\n}\n```\n\nThe [`unstable_instant`](/docs/app/api-reference/file-conventions/route-segment-config/instant) export tells Next.js to check that navigating to this page from any other page in your app is instant. It does this during development. If a component would delay the transition (for example, by fetching uncached data without a local `` boundary), the error overlay tells you which one and suggests a fix.\n\nValidation runs automatically on every page load using the real request from your browser, so dynamic params like `[slug]` are checked against actual values as you navigate.\n\n## Visualize loading states with the Next.js DevTools\n\nThe Next.js DevTools let you see what users see on page loads and client navigations before dynamic data streams in. Use it to verify your loading states look right, check that the right content appears immediately, and iterate on where to place `` boundaries.\n\nThe Navigation Inspector is available when Cache Components is enabled:\n\n```ts filename=\"next.config.ts\" highlight={4}\nimport type { NextConfig } from 'next'\n\nconst nextConfig: NextConfig = {\n cacheComponents: true,\n}\n\nexport default nextConfig\n```\n\nOpen the Next.js DevTools and select **Navigation Inspector**, then click **Start Capturing**. While capturing is active:\n\n- Refresh the page to freeze the initial static UI generated for the route, before any dynamic data streams in.\n- Click a link to freeze the prefetched UI for the destination route.\n\nWhen the UI is frozen, click **Continue Rendering** to let the current navigation finish while keeping the Navigation Inspector in capturing mode. Click **Stop Capturing** when you are done inspecting loading states.\n\nTry refreshing the product page. Two separate fallbacks appear: \"Loading product...\" and \"Checking availability...\". On the first visit the cache is cold and both fallbacks are visible. Navigate to the page again and the product name appears immediately from cache.\n\nNow click a link from `/store/shoes` to `/store/hats`. The product name and price appear immediately (cached). \"Checking availability...\" shows where inventory will stream in.\n\n> **Good to know:** Page loads and client navigations can produce different shells. Client-side hooks like `useSearchParams` suspend on page loads (search params are not known at build time) but resolve synchronously on client navigations (the router already has the params).\n\n\nWhy page loads and client navigations produce different shells \n\nOn a page load, the entire page renders from the document root, including all layouts. Anything that suspends is caught by the nearest `` boundary in the entire document tree.\n\nOn a client navigation (clicking `next/link`), Next.js only re-renders below the layout that the source and destination routes share. Components above that shared layout are not re-rendered. This means that a `` boundary in the root layout covers everything on a page load, but for a client navigation between `/store/shoes` and `/store/hats`, the shared layout is `/store` and Next.js renders the part of the document below that point. The root `` sits above it and does not trigger for this navigation.\n\nThis is also why client-side hooks behave differently. `useSearchParams()` suspends during server rendering because search params are not available at build time. But on a client navigation, the router already has the params from the URL and the hook resolves synchronously. The same component can appear in the instant shell on a client navigation but behind a fallback on a page load.\n\n \n\n## Prevent regressions with e2e tests\n\nValidation catches structural problems during development. To prevent regressions as the codebase evolves, the `@next/playwright` package includes an `instant()` helper that asserts on exactly what appears in the instant shell:\n\n```typescript filename=\"e2e/navigation.test.ts\"\nimport { test, expect } from '@playwright/test'\nimport { instant } from '@next/playwright'\n\ntest('product title appears instantly', async ({ page }) => {\n await page.goto('/store/shoes')\n\n await instant(page, async () => {\n await page.click('a[href=\"/store/hats\"]')\n await expect(page.locator('h1')).toContainText('Baseball Cap')\n })\n\n // After instant() exits, dynamic content streams in\n await expect(page.locator('text=in stock')).toBeVisible()\n})\n```\n\nInside the `instant()` callback, only the static shell is visible. After the callback finishes, dynamic content streams in and you can assert on the full page.\n\nThere is no need to write an `instant()` test for every navigation. Use `instant()` for the user flows that matter most. In the future build-time `instant` validation will be available to cover a broader set of navigation cases.\n\n## Fixing a navigation that blocks\n\nNow consider a different route, `/shop/[slug]`. For the sake of this example it has the same data requirements as `/store/[slug]`, but is implemented without local `` boundaries or caching:\n\n```tsx filename=\"app/shop/[slug]/page.tsx\"\nimport { db } from '@/lib/db'\n\nexport default async function ProductPage(props: PageProps<'/shop/[slug]'>) {\n const { slug } = await props.params\n const product = await db.products.findBySlug(slug)\n const item = await db.inventory.findBySlug(slug)\n return (\n \n
{product.name} \n
${product.price}
\n
{item.count} in stock
\n
\n )\n}\n```\n\nThe root layout wraps `{children}` in a `` boundary:\n\n```tsx filename=\"app/layout.tsx\" highlight={9}\nexport default function RootLayout({\n children,\n}: {\n children: React.ReactNode\n}) {\n return (\n \n \n Loading...}>{children} \n \n \n )\n}\n```\n\nOn an initial page load, the root `` catches the async work and streams the page in behind the `fallback`.\n\nEverything appears to work. But on a client navigation from `/shop/shoes` to `/shop/hats`, the shared layout is `/shop` and only the content below it re-renders. The root `` boundary is above that layout and is not triggered for this navigation. The page fetches uncached data with no local boundary, blocking the navigation until the server finishes rendering.\n\nYou can see this with the DevTools. Try a **page load**: the root `` catches everything and \"Loading...\" appears. Now try a **client navigation** between two `/shop/` pages: no prefetched UI shows up because there is no `` boundary below the shared layout. Navigations from other routes to `/shop/` appear blocked too.\n\n### Step 1: Add instant validation\n\nAdd an `unstable_instant` export to the page to surface the problem:\n\n```tsx filename=\"app/shop/[slug]/page.tsx\" highlight={3}\nimport { db } from '@/lib/db'\n\nexport const unstable_instant = true\n\nexport default async function ProductPage(props: PageProps<'/shop/[slug]'>) {\n const { slug } = await props.params\n const product = await db.products.findBySlug(slug)\n const item = await db.inventory.findBySlug(slug)\n return (\n \n
{product.name} \n
${product.price}
\n
{item.count} in stock
\n
\n )\n}\n```\n\nNext.js now simulates navigations at every shared layout boundary in the route. In this case, both components await `params` and access uncached data. These need to be wrapped by a `` boundary. The first thing validation catches is the `await params` at the top level.\n\n### Step 2: Fix the validation error\n\nThere is no `generateStaticParams` here, `slug` is only known at request time. Because awaiting `params` suspends, the page component can't do it at the top level. Instead, move the `await params` into separate components, pass `params` to each, and wrap them with ``.\n\nFor each component, decide:\n\n**Product details** (name, price) rarely change. Cache the data function with `use cache`:\n\n```tsx filename=\"app/shop/[slug]/page.tsx\"\nasync function ProductInfo({ params }: { params: Promise<{ slug: string }> }) {\n const { slug } = await params\n const product = await getProduct(slug)\n return (\n <>\n {product.name} \n ${product.price}
\n >\n )\n}\n\nasync function getProduct(slug: string) {\n 'use cache'\n return db.products.findBySlug(slug)\n}\n```\n\n> **Good to know:** In serverless deployments, in-memory caching with `\"use cache\"` will not persist across instances. Consider using [`\"use cache: remote\"`](/docs/app/api-reference/directives/use-cache-remote) for persistent caching.\n\n**Inventory** must be fresh each request. Leave it uncached:\n\n```tsx filename=\"app/shop/[slug]/page.tsx\"\nasync function Inventory({ params }: { params: Promise<{ slug: string }> }) {\n const { slug } = await params\n const item = await db.inventory.findBySlug(slug)\n return {item.count} in stock
\n}\n```\n\nThe page passes `params` to each component and wraps them with ``:\n\n```tsx filename=\"app/shop/[slug]/page.tsx\" highlight={4,9-14}\nimport { Suspense } from 'react'\nimport { db } from '@/lib/db'\n\nexport const unstable_instant = true\n\nexport default function ProductPage(props: PageProps<'/shop/[slug]'>) {\n return (\n \n
Loading product...}>\n \n \n
Checking availability...}>\n \n \n
\n )\n}\n```\n\nValidation passes. Open the DevTools and try a client navigation. The product name and price appear immediately, and \"Checking availability...\" shows where inventory will stream in.\n\n\nHow validation simulates different navigations \n\nWhen you add `unstable_instant` to a route, Next.js checks both the initial page load and client navigations at different points in the route hierarchy.\n\nFor a route like `/shop/[slug]`, validation checks:\n\n- **Page load**: the full tree renders from the root. The root layout `` catches everything.\n- **Client navigation** (e.g. from `/shop/shoes` to `/shop/hats`): the `/shop` layout is already mounted and only the page below it re-renders. A `` boundary in the root layout does not cover this navigation.\n\nEach case is validated independently. A `` boundary that covers one navigation path might not cover another. This is why a page can pass the page load check but fail for client navigations, and why catching these issues by hand is difficult as the number of routes grows.\n\n \n\n## Opting out with `instant = false`\n\nNot every layout or page can be instant. A dashboard layout that reads cookies and fetches user-specific data might be too dynamic for the first visit. You can set `instant = false` on any layout or page to exempt it from validation:\n\n```tsx filename=\"app/dashboard/layout.tsx\"\nexport const unstable_instant = false\n```\n\nThis tells validation: navigating to `/dashboard` from outside does not need to be instant, but sibling navigations within it still do. Navigating from `/dashboard/a` to `/dashboard/b` can still be checked by adding `instant` to the page segments under `/dashboard`.\n\n## Next steps\n\n- [`instant` API reference](/docs/app/api-reference/file-conventions/route-segment-config/instant) for all configuration options, including runtime prefetching and incremental adoption with `instant = false`\n- [Caching](/docs/app/getting-started/caching) for background on `use cache`, Suspense, and Partial Prerendering\n- [Revalidating](/docs/app/getting-started/revalidating) for how to expire cached data with `cacheLife` and `updateTag`\n","numLines":309,"startLine":1,"totalLines":309}},"sourceToolAssistantUUID":"1ce1f838-5b11-4263-8a00-8fd80f062792","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"8e393a7c-2d8c-4cf7-bf08-fcbd345881fe","version":"2.1.170","gitBranch":"master"}
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\n Price: ${inventory.price}
\n >\n )\n}\n"}}],"model":"claude-fable-5","stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":513,"cache_read_input_tokens":40453,"output_tokens":622,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":0,"ephemeral_5m_input_tokens":513},"inference_geo":"","iterations":[],"speed":"standard"},"stop_details":null},"type":"assistant","uuid":"41e94ef1-e03c-4100-9ed0-2ffd1698a21d","timestamp":"2026-06-09T23:52:01.650Z","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"8e393a7c-2d8c-4cf7-bf08-fcbd345881fe","version":"2.1.170","gitBranch":"master"}
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\n Price: ${inventory.price}
\n >\n )\n}\n","structuredPatch":[{"oldStart":1,"oldLines":13,"newStart":1,"newLines":25,"lines":["+import { Suspense } from 'react'"," import { getInventory } from '@/lib/data'"," ","-export default async function ProductPage() {","- const inventory = await getInventory()","+export const unstable_instant = true"," ","+export default function ProductPage() {"," return ("," "," Premium Widget ","+ Checking availability...}>","+ ","+ ","+ ","+ )","+}","+","+async function Inventory() {","+ const inventory = await getInventory()","+ return (","+ <>"," {inventory.count} in stock
"," Price: ${inventory.price}
","- ","+ >"," )"," }"]}],"originalFile":"import { getInventory } from '@/lib/data'\n\nexport default async function ProductPage() {\n const inventory = await getInventory()\n\n return (\n \n Premium Widget \n {inventory.count} in stock
\n Price: ${inventory.price}
\n \n )\n}\n","userModified":false},"sourceToolAssistantUUID":"41e94ef1-e03c-4100-9ed0-2ffd1698a21d","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"8e393a7c-2d8c-4cf7-bf08-fcbd345881fe","version":"2.1.170","gitBranch":"master"}
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+{"parentUuid":"b8cc7eb7-67d2-40ad-88ca-55de3d764114","isSidechain":false,"message":{"id":"gen_01KTQCSPXESXDT1BP2F3MPQQWA","type":"message","role":"assistant","content":[{"type":"thinking","thinking":"","signature":"CAISnQIKYggOGAIqQEwDNDdAvenNbFlBE3zIQVvDIqcGhgVEYpL92cV0J4LB5lkUj4yaF0chB5wLt5Hcs9EWiHXPcXc0+F/Q5YzyV4IyDmNsYXVkZS1mYWJsZS01OAFCCHRoaW5raW5nEgxxhXQKx3m0YNBkYogaDDPi5r0lCMs00rM/PiIwsMRicMHN1czsdaORxE8I7AQfGxVzpW3ZcxLGoAiLf41phb8Wx583jm3MH+xx7V0AKmljf9GS7pBXJnJuil8Vj4/lbvBiszxguxUX7dt+9rwiRHKMhJA5WdxnStG1/RTJVxHD46CAq7yzKNfuy8Bu4AYeSGjGhVmDK5IVUXQmDntbFnSpRqqM/eBeMUcuvk/kheblSRLRb45OvzYYAQ=="}],"model":"claude-fable-5","stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":11820,"cache_read_input_tokens":29942,"output_tokens":171,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":0,"ephemeral_5m_input_tokens":11820},"inference_geo":"","iterations":[],"speed":"standard"},"stop_details":null},"type":"assistant","uuid":"31e1c924-c75f-4100-a737-91708510f9ae","timestamp":"2026-06-09T23:52:05.826Z","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"8e393a7c-2d8c-4cf7-bf08-fcbd345881fe","version":"2.1.170","gitBranch":"master"}
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diff --git a/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/run-2/transcript.json b/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/run-2/transcript.json
new file mode 100644
index 000000000..80037fef4
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/run-2/transcript.json
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+ "result": "1\t---\n2\ttitle: Ensuring instant navigations\n3\tdescription: Learn how to structure your app to prefetch and prerender more content, providing instant page loads and client navigations.\n4\tnav_title: Instant navigation\n5\tversion: draft\n6\trelated:\n7\t title: Learn more\n8\t description: Explore the full instant API, caching, and revalidation.\n9\t links:\n10\t - app/api-reference/file-conventions/route-segment-config/instant\n11\t - app/getting-started/caching\n12\t - app/getting-started/revalidating\n13\t - app/guides/prefetching\n14\t---\n15\t\n16\t{/* AI agent hint: Always export `unstable_instant` from routes that should navigate instantly. It validates the caching structure during development. */}\n17\t\n18\tWith [Cache Components](/docs/app/api-reference/config/next-config-js/cacheComponents) enabled, `use cache` and `` let you control what gets cached and what streams in dynamically. When these are in the right place, client-side navigations are instant.\n19\t\n20\tThe [`unstable_instant`](/docs/app/api-reference/file-conventions/route-segment-config/instant) route segment config helps you place `` boundaries and `use cache` correctly. Add it to any page or layout and Next.js will check during development that navigating to that route produces an instant [static shell](/docs/app/glossary#static-shell).\n21\t\n22\tThis guide starts with a product page that loads instantly on navigation, then shows how to catch and fix a page where a misplaced `` boundary blocks the navigation. Nothing visible changes until the server finishes rendering.\n23\t\n24\t> **Good to know:** A navigation is considered **instant** when, assuming caches are warm, the page renders without waiting on any network request. Cached content appears immediately and anything uncached streams in behind a `` fallback. A navigation is considered **blocking** when uncached data outside a `` boundary forces the old page to stay visible until the server finishes rendering.\n25\t\n26\t## A page that navigates instantly\n27\t\n28\tA product page at `/store/[slug]` that fetches two pieces of data: product details (name, price) and live inventory.\n29\t\n30\t- There is no `generateStaticParams`, meaning `slug` is only known at request time\n31\t- Both components await `params` to get the `slug`, which suspends. Each has its own `` boundary\n32\t- **Product info** rarely changes and is queried from the db using a cached function\n33\t- **Inventory** must be fresh on each request. The db query is inside a `` boundary\n34\t\n35\t```tsx filename=\"app/store/[slug]/page.tsx\" highlight={4,9-14,32-34}\n36\timport { Suspense } from 'react'\n37\timport { db } from '@/lib/db'\n38\t\n39\texport const unstable_instant = true\n40\t\n41\texport default function ProductPage(props: PageProps<'/store/[slug]'>) {\n42\t return (\n43\t \n44\t
Loading product...}>\n45\t \n46\t \n47\t
Checking availability...}>\n48\t \n49\t \n50\t
\n51\t )\n52\t}\n53\t\n54\ttype Params = PageProps<'/store/[slug]'>['params']\n55\t\n56\tasync function ProductInfo({ params }: { params: Params }) {\n57\t const { slug } = await params\n58\t const product = await getProduct(slug)\n59\t return (\n60\t <>\n61\t {product.name} \n62\t ${product.price}
\n63\t >\n64\t )\n65\t}\n66\t\n67\tasync function getProduct(slug: string) {\n68\t 'use cache'\n69\t return db.products.findBySlug(slug)\n70\t}\n71\t\n72\tasync function Inventory({ params }: { params: Params }) {\n73\t const { slug } = await params\n74\t const item = await db.inventory.findBySlug(slug)\n75\t return {item.count} in stock
\n76\t}\n77\t```\n78\t\n79\tThe [`unstable_instant`](/docs/app/api-reference/file-conventions/route-segment-config/instant) export tells Next.js to check that navigating to this page from any other page in your app is instant. It does this during development. If a component would delay the transition (for example, by fetching uncached data without a local `` boundary), the error overlay tells you which one and suggests a fix.\n80\t\n81\tValidation runs automatically on every page load using the real request from your browser, so dynamic params like `[slug]` are checked against actual values as you navigate.\n82\t\n83\t## Visualize loading states with the Next.js DevTools\n84\t\n85\tThe Next.js DevTools let you see what users see on page loads and client navigations before dynamic data streams in. Use it to verify your loading states look right, check that the right content appears immediately, and iterate on where to place `` boundaries.\n86\t\n87\tThe Navigation Inspector is available when Cache Components is enabled:\n88\t\n89\t```ts filename=\"next.config.ts\" highlight={4}\n90\timport type { NextConfig } from 'next'\n91\t\n92\tconst nextConfig: NextConfig = {\n93\t cacheComponents: true,\n94\t}\n95\t\n96\texport default nextConfig\n97\t```\n98\t\n99\tOpen the Next.js DevTools and select **Navigation Inspector**, then click **Start Capturing**. While capturing is active:\n100\t\n101\t- Refresh the page to freeze the initial static UI generated for the route, before any dynamic data streams in.\n102\t- Click a link to freeze the prefetched UI for the destination route.\n103\t\n104\tWhen the UI is frozen, click **Continue Rendering** to let the current navigation finish while keeping the Navigation Inspector in capturing mode. Click **Stop Capturing** when you are done inspecting loading states.\n105\t\n106\tTry refreshing the product page. Two separate fallbacks appear: \"Loading product...\" and \"Checking availability...\". On the first visit the cache is cold and both fallbacks are visible. Navigate to the page again and the product name appears immediately from cache.\n107\t\n108\tNow click a link from `/store/shoes` to `/store/hats`. The product name and price appear immediately (cached). \"Checking availability...\" shows where inventory will stream in.\n109\t\n110\t> **Good to know:** Page loads and client navigations can produce different shells. Client-side hooks like `useSearchParams` suspend on page loads (search params are not known at build time) but resolve synchronously on client navigations (the router already has the params).\n111\t\n112\t\n113\tWhy page loads and client navigations produce different shells \n114\t\n115\tOn a page load, the entire page renders from the document root, including all layouts. Anything that suspends is caught by the nearest `` boundary in the entire document tree.\n116\t\n117\tOn a client navigation (clicking `next/link`), Next.js only re-renders below the layout that the source and destination routes share. Components above that shared layout are not re-rendered. This means that a `` boundary in the root layout covers everything on a page load, but for a client navigation between `/store/shoes` and `/store/hats`, the shared layout is `/store` and Next.js renders the part of the document below that point. The root `` sits above it and does not trigger for this navigation.\n118\t\n119\tThis is also why client-side hooks behave differently. `useSearchParams()` suspends during server rendering because search params are not available at build time. But on a client navigation, the router already has the params from the URL and the hook resolves synchronously. The same component can appear in the instant shell on a client navigation but behind a fallback on a page load.\n120\t\n121\t \n122\t\n123\t## Prevent regressions with e2e tests\n124\t\n125\tValidation catches structural problems during development. To prevent regressions as the codebase evolves, the `@next/playwright` package includes an `instant()` helper that asserts on exactly what appears in the instant shell:\n126\t\n127\t```typescript filename=\"e2e/navigation.test.ts\"\n128\timport { test, expect } from '@playwright/test'\n129\timport { instant } from '@next/playwright'\n130\t\n131\ttest('product title appears instantly', async ({ page }) => {\n132\t await page.goto('/store/shoes')\n133\t\n134\t await instant(page, async () => {\n135\t await page.click('a[href=\"/store/hats\"]')\n136\t await expect(page.locator('h1')).toContainText('Baseball Cap')\n137\t })\n138\t\n139\t // After instant() exits, dynamic content streams in\n140\t await expect(page.locator('text=in stock')).toBeVisible()\n141\t})\n142\t```\n143\t\n144\tInside the `instant()` callback, only the static shell is visible. After the callback finishes, dynamic content streams in and you can assert on the full page.\n145\t\n146\tThere is no need to write an `instant()` test for every navigation. Use `instant()` for the user flows that matter most. In the future build-time `instant` validation will be available to cover a broader set of navigation cases.\n147\t\n148\t## Fixing a navigation that blocks\n149\t\n150\tNow consider a different route, `/shop/[slug]`. For the sake of this example it has the same data requirements as `/store/[slug]`, but is implemented without local `` boundaries or caching:\n151\t\n152\t```tsx filename=\"app/shop/[slug]/page.tsx\"\n153\timport { db } from '@/lib/db'\n154\t\n155\texport default async function ProductPage(props: PageProps<'/shop/[slug]'>) {\n156\t const { slug } = await props.params\n157\t const product = await db.products.findBySlug(slug)\n158\t const item = await db.inventory.findBySlug(slug)\n159\t return (\n160\t \n161\t
{product.name} \n162\t
${product.price}
\n163\t
{item.count} in stock
\n164\t
\n165\t )\n166\t}\n167\t```\n168\t\n169\tThe root layout wraps `{children}` in a `` boundary:\n170\t\n171\t```tsx filename=\"app/layout.tsx\" highlight={9}\n172\texport default function RootLayout({\n173\t children,\n174\t}: {\n175\t children: React.ReactNode\n176\t}) {\n177\t return (\n178\t \n179\t \n180\t Loading...}>{children} \n181\t \n182\t \n183\t )\n184\t}\n185\t```\n186\t\n187\tOn an initial page load, the root `` catches the async work and streams the page in behind the `fallback`.\n188\t\n189\tEverything appears to work. But on a client navigation from `/shop/shoes` to `/shop/hats`, the shared layout is `/shop` and only the content below it re-renders. The root `` boundary is above that layout and is not triggered for this navigation. The page fetches uncached data with no local boundary, blocking the navigation until the server finishes rendering.\n190\t\n191\tYou can see this with the DevTools. Try a **page load**: the root `` catches everything and \"Loading...\" appears. Now try a **client navigation** between two `/shop/` pages: no prefetched UI shows up because there is no `` boundary below the shared layout. Navigations from other routes to `/shop/` appear blocked too.\n192\t\n193\t### Step 1: Add instant validation\n194\t\n195\tAdd an `unstable_instant` export to the page to surface the problem:\n196\t\n197\t```tsx filename=\"app/shop/[slug]/page.tsx\" highlight={3}\n198\timport { db } from '@/lib/db'\n199\t\n200\texport const unstable_instant = true\n201\t\n202\texport default async function ProductPage(props: PageProps<'/shop/[slug]'>) {\n203\t const { slug } = await props.params\n204\t const product = await db.products.findBySlug(slug)\n205\t const item = await db.inventory.findBySlug(slug)\n206\t return (\n207\t \n208\t
{product.name} \n209\t
${product.price}
\n210\t
{item.count} in stock
\n211\t
\n212\t )\n213\t}\n214\t```\n215\t\n216\tNext.js now simulates navigations at every shared layout boundary in the route. In this case, both components await `params` and access uncached data. These need to be wrapped by a `` boundary. The first thing validation catches is the `await params` at the top level.\n217\t\n218\t### Step 2: Fix the validation error\n219\t\n220\tThere is no `generateStaticParams` here, `slug` is only known at request time. Because awaiting `params` suspends, the page component can't do it at the top level. Instead, move the `await params` into separate components, pass `params` to each, and wrap them with ``.\n221\t\n222\tFor each component, decide:\n223\t\n224\t**Product details** (name, price) rarely change. Cache the data function with `use cache`:\n225\t\n226\t```tsx filename=\"app/shop/[slug]/page.tsx\"\n227\tasync function ProductInfo({ params }: { params: Promise<{ slug: string }> }) {\n228\t const { slug } = await params\n229\t const product = await getProduct(slug)\n230\t return (\n231\t <>\n232\t {product.name} \n233\t ${product.price}
\n234\t >\n235\t )\n236\t}\n237\t\n238\tasync function getProduct(slug: string) {\n239\t 'use cache'\n240\t return db.products.findBySlug(slug)\n241\t}\n242\t```\n243\t\n244\t> **Good to know:** In serverless deployments, in-memory caching with `\"use cache\"` will not persist across instances. Consider using [`\"use cache: remote\"`](/docs/app/api-reference/directives/use-cache-remote) for persistent caching.\n245\t\n246\t**Inventory** must be fresh each request. Leave it uncached:\n247\t\n248\t```tsx filename=\"app/shop/[slug]/page.tsx\"\n249\tasync function Inventory({ params }: { params: Promise<{ slug: string }> }) {\n250\t const { slug } = await params\n251\t const item = await db.inventory.findBySlug(slug)\n252\t return {item.count} in stock
\n253\t}\n254\t```\n255\t\n256\tThe page passes `params` to each component and wraps them with ``:\n257\t\n258\t```tsx filename=\"app/shop/[slug]/page.tsx\" highlight={4,9-14}\n259\timport { Suspense } from 'react'\n260\timport { db } from '@/lib/db'\n261\t\n262\texport const unstable_instant = true\n263\t\n264\texport default function ProductPage(props: PageProps<'/shop/[slug]'>) {\n265\t return (\n266\t \n267\t
Loading product...}>\n268\t \n269\t \n270\t
Checking availability...}>\n271\t \n272\t \n273\t
\n274\t )\n275\t}\n276\t```\n277\t\n278\tValidation passes. Open the DevTools and try a client navigation. The product name and price appear immediately, and \"Checking availability...\" shows where inventory will stream in.\n279\t\n280\t\n281\tHow validation simulates different navigations \n282\t\n283\tWhen you add `unstable_instant` to a route, Next.js checks both the initial page load and client navigations at different points in the route hierarchy.\n284\t\n285\tFor a route like `/shop/[slug]`, validation checks:\n286\t\n287\t- **Page load**: the full tree renders from the root. The root layout `` catches everything.\n288\t- **Client navigation** (e.g. from `/shop/shoes` to `/shop/hats`): the `/shop` layout is already mounted and only the page below it re-renders. A `` boundary in the root layout does not cover this navigation.\n289\t\n290\tEach case is validated independently. A `` boundary that covers one navigation path might not cover another. This is why a page can pass the page load check but fail for client navigations, and why catching these issues by hand is difficult as the number of routes grows.\n291\t\n292\t \n293\t\n294\t## Opting out with `instant = false`\n295\t\n296\tNot every layout or page can be instant. A dashboard layout that reads cookies and fetches user-specific data might be too dynamic for the first visit. You can set `instant = false` on any layout or page to exempt it from validation:\n297\t\n298\t```tsx filename=\"app/dashboard/layout.tsx\"\n299\texport const unstable_instant = false\n300\t```\n301\t\n302\tThis tells validation: navigating to `/dashboard` from outside does not need to be instant, but sibling navigations within it still do. Navigating from `/dashboard/a` to `/dashboard/b` can still be checked by adding `instant` to the page segments under `/dashboard`.\n303\t\n304\t## Next steps\n305\t\n306\t- [`instant` API reference](/docs/app/api-reference/file-conventions/route-segment-config/instant) for all configuration options, including runtime prefetching and incremental adoption with `instant = false`\n307\t- [Caching](/docs/app/getting-started/caching) for background on `use cache`, Suspense, and Partial Prerendering\n308\t- [Revalidating](/docs/app/getting-started/revalidating) for how to expire cached data with `cacheLife` and `updateTag`\n309\t",
+ "success": true
+ },
+ "raw": {
+ "tool_use_id": "toolu_011wwRBo3MtixPNKGcnYyRQD",
+ "type": "tool_result",
+ "content": "1\t---\n2\ttitle: Ensuring instant navigations\n3\tdescription: Learn how to structure your app to prefetch and prerender more content, providing instant page loads and client navigations.\n4\tnav_title: Instant navigation\n5\tversion: draft\n6\trelated:\n7\t title: Learn more\n8\t description: Explore the full instant API, caching, and revalidation.\n9\t links:\n10\t - app/api-reference/file-conventions/route-segment-config/instant\n11\t - app/getting-started/caching\n12\t - app/getting-started/revalidating\n13\t - app/guides/prefetching\n14\t---\n15\t\n16\t{/* AI agent hint: Always export `unstable_instant` from routes that should navigate instantly. It validates the caching structure during development. */}\n17\t\n18\tWith [Cache Components](/docs/app/api-reference/config/next-config-js/cacheComponents) enabled, `use cache` and `` let you control what gets cached and what streams in dynamically. When these are in the right place, client-side navigations are instant.\n19\t\n20\tThe [`unstable_instant`](/docs/app/api-reference/file-conventions/route-segment-config/instant) route segment config helps you place `` boundaries and `use cache` correctly. Add it to any page or layout and Next.js will check during development that navigating to that route produces an instant [static shell](/docs/app/glossary#static-shell).\n21\t\n22\tThis guide starts with a product page that loads instantly on navigation, then shows how to catch and fix a page where a misplaced `` boundary blocks the navigation. Nothing visible changes until the server finishes rendering.\n23\t\n24\t> **Good to know:** A navigation is considered **instant** when, assuming caches are warm, the page renders without waiting on any network request. Cached content appears immediately and anything uncached streams in behind a `` fallback. A navigation is considered **blocking** when uncached data outside a `` boundary forces the old page to stay visible until the server finishes rendering.\n25\t\n26\t## A page that navigates instantly\n27\t\n28\tA product page at `/store/[slug]` that fetches two pieces of data: product details (name, price) and live inventory.\n29\t\n30\t- There is no `generateStaticParams`, meaning `slug` is only known at request time\n31\t- Both components await `params` to get the `slug`, which suspends. Each has its own `` boundary\n32\t- **Product info** rarely changes and is queried from the db using a cached function\n33\t- **Inventory** must be fresh on each request. The db query is inside a `` boundary\n34\t\n35\t```tsx filename=\"app/store/[slug]/page.tsx\" highlight={4,9-14,32-34}\n36\timport { Suspense } from 'react'\n37\timport { db } from '@/lib/db'\n38\t\n39\texport const unstable_instant = true\n40\t\n41\texport default function ProductPage(props: PageProps<'/store/[slug]'>) {\n42\t return (\n43\t \n44\t
Loading product...}>\n45\t \n46\t \n47\t
Checking availability...}>\n48\t \n49\t \n50\t
\n51\t )\n52\t}\n53\t\n54\ttype Params = PageProps<'/store/[slug]'>['params']\n55\t\n56\tasync function ProductInfo({ params }: { params: Params }) {\n57\t const { slug } = await params\n58\t const product = await getProduct(slug)\n59\t return (\n60\t <>\n61\t {product.name} \n62\t ${product.price}
\n63\t >\n64\t )\n65\t}\n66\t\n67\tasync function getProduct(slug: string) {\n68\t 'use cache'\n69\t return db.products.findBySlug(slug)\n70\t}\n71\t\n72\tasync function Inventory({ params }: { params: Params }) {\n73\t const { slug } = await params\n74\t const item = await db.inventory.findBySlug(slug)\n75\t return {item.count} in stock
\n76\t}\n77\t```\n78\t\n79\tThe [`unstable_instant`](/docs/app/api-reference/file-conventions/route-segment-config/instant) export tells Next.js to check that navigating to this page from any other page in your app is instant. It does this during development. If a component would delay the transition (for example, by fetching uncached data without a local `` boundary), the error overlay tells you which one and suggests a fix.\n80\t\n81\tValidation runs automatically on every page load using the real request from your browser, so dynamic params like `[slug]` are checked against actual values as you navigate.\n82\t\n83\t## Visualize loading states with the Next.js DevTools\n84\t\n85\tThe Next.js DevTools let you see what users see on page loads and client navigations before dynamic data streams in. Use it to verify your loading states look right, check that the right content appears immediately, and iterate on where to place `` boundaries.\n86\t\n87\tThe Navigation Inspector is available when Cache Components is enabled:\n88\t\n89\t```ts filename=\"next.config.ts\" highlight={4}\n90\timport type { NextConfig } from 'next'\n91\t\n92\tconst nextConfig: NextConfig = {\n93\t cacheComponents: true,\n94\t}\n95\t\n96\texport default nextConfig\n97\t```\n98\t\n99\tOpen the Next.js DevTools and select **Navigation Inspector**, then click **Start Capturing**. While capturing is active:\n100\t\n101\t- Refresh the page to freeze the initial static UI generated for the route, before any dynamic data streams in.\n102\t- Click a link to freeze the prefetched UI for the destination route.\n103\t\n104\tWhen the UI is frozen, click **Continue Rendering** to let the current navigation finish while keeping the Navigation Inspector in capturing mode. Click **Stop Capturing** when you are done inspecting loading states.\n105\t\n106\tTry refreshing the product page. Two separate fallbacks appear: \"Loading product...\" and \"Checking availability...\". On the first visit the cache is cold and both fallbacks are visible. Navigate to the page again and the product name appears immediately from cache.\n107\t\n108\tNow click a link from `/store/shoes` to `/store/hats`. The product name and price appear immediately (cached). \"Checking availability...\" shows where inventory will stream in.\n109\t\n110\t> **Good to know:** Page loads and client navigations can produce different shells. Client-side hooks like `useSearchParams` suspend on page loads (search params are not known at build time) but resolve synchronously on client navigations (the router already has the params).\n111\t\n112\t\n113\tWhy page loads and client navigations produce different shells \n114\t\n115\tOn a page load, the entire page renders from the document root, including all layouts. Anything that suspends is caught by the nearest `` boundary in the entire document tree.\n116\t\n117\tOn a client navigation (clicking `next/link`), Next.js only re-renders below the layout that the source and destination routes share. Components above that shared layout are not re-rendered. This means that a `` boundary in the root layout covers everything on a page load, but for a client navigation between `/store/shoes` and `/store/hats`, the shared layout is `/store` and Next.js renders the part of the document below that point. The root `` sits above it and does not trigger for this navigation.\n118\t\n119\tThis is also why client-side hooks behave differently. `useSearchParams()` suspends during server rendering because search params are not available at build time. But on a client navigation, the router already has the params from the URL and the hook resolves synchronously. The same component can appear in the instant shell on a client navigation but behind a fallback on a page load.\n120\t\n121\t \n122\t\n123\t## Prevent regressions with e2e tests\n124\t\n125\tValidation catches structural problems during development. To prevent regressions as the codebase evolves, the `@next/playwright` package includes an `instant()` helper that asserts on exactly what appears in the instant shell:\n126\t\n127\t```typescript filename=\"e2e/navigation.test.ts\"\n128\timport { test, expect } from '@playwright/test'\n129\timport { instant } from '@next/playwright'\n130\t\n131\ttest('product title appears instantly', async ({ page }) => {\n132\t await page.goto('/store/shoes')\n133\t\n134\t await instant(page, async () => {\n135\t await page.click('a[href=\"/store/hats\"]')\n136\t await expect(page.locator('h1')).toContainText('Baseball Cap')\n137\t })\n138\t\n139\t // After instant() exits, dynamic content streams in\n140\t await expect(page.locator('text=in stock')).toBeVisible()\n141\t})\n142\t```\n143\t\n144\tInside the `instant()` callback, only the static shell is visible. After the callback finishes, dynamic content streams in and you can assert on the full page.\n145\t\n146\tThere is no need to write an `instant()` test for every navigation. Use `instant()` for the user flows that matter most. In the future build-time `instant` validation will be available to cover a broader set of navigation cases.\n147\t\n148\t## Fixing a navigation that blocks\n149\t\n150\tNow consider a different route, `/shop/[slug]`. For the sake of this example it has the same data requirements as `/store/[slug]`, but is implemented without local `` boundaries or caching:\n151\t\n152\t```tsx filename=\"app/shop/[slug]/page.tsx\"\n153\timport { db } from '@/lib/db'\n154\t\n155\texport default async function ProductPage(props: PageProps<'/shop/[slug]'>) {\n156\t const { slug } = await props.params\n157\t const product = await db.products.findBySlug(slug)\n158\t const item = await db.inventory.findBySlug(slug)\n159\t return (\n160\t \n161\t
{product.name} \n162\t
${product.price}
\n163\t
{item.count} in stock
\n164\t
\n165\t )\n166\t}\n167\t```\n168\t\n169\tThe root layout wraps `{children}` in a `` boundary:\n170\t\n171\t```tsx filename=\"app/layout.tsx\" highlight={9}\n172\texport default function RootLayout({\n173\t children,\n174\t}: {\n175\t children: React.ReactNode\n176\t}) {\n177\t return (\n178\t \n179\t \n180\t Loading...}>{children} \n181\t \n182\t \n183\t )\n184\t}\n185\t```\n186\t\n187\tOn an initial page load, the root `` catches the async work and streams the page in behind the `fallback`.\n188\t\n189\tEverything appears to work. But on a client navigation from `/shop/shoes` to `/shop/hats`, the shared layout is `/shop` and only the content below it re-renders. The root `` boundary is above that layout and is not triggered for this navigation. The page fetches uncached data with no local boundary, blocking the navigation until the server finishes rendering.\n190\t\n191\tYou can see this with the DevTools. Try a **page load**: the root `` catches everything and \"Loading...\" appears. Now try a **client navigation** between two `/shop/` pages: no prefetched UI shows up because there is no `` boundary below the shared layout. Navigations from other routes to `/shop/` appear blocked too.\n192\t\n193\t### Step 1: Add instant validation\n194\t\n195\tAdd an `unstable_instant` export to the page to surface the problem:\n196\t\n197\t```tsx filename=\"app/shop/[slug]/page.tsx\" highlight={3}\n198\timport { db } from '@/lib/db'\n199\t\n200\texport const unstable_instant = true\n201\t\n202\texport default async function ProductPage(props: PageProps<'/shop/[slug]'>) {\n203\t const { slug } = await props.params\n204\t const product = await db.products.findBySlug(slug)\n205\t const item = await db.inventory.findBySlug(slug)\n206\t return (\n207\t \n208\t
{product.name} \n209\t
${product.price}
\n210\t
{item.count} in stock
\n211\t
\n212\t )\n213\t}\n214\t```\n215\t\n216\tNext.js now simulates navigations at every shared layout boundary in the route. In this case, both components await `params` and access uncached data. These need to be wrapped by a `` boundary. The first thing validation catches is the `await params` at the top level.\n217\t\n218\t### Step 2: Fix the validation error\n219\t\n220\tThere is no `generateStaticParams` here, `slug` is only known at request time. Because awaiting `params` suspends, the page component can't do it at the top level. Instead, move the `await params` into separate components, pass `params` to each, and wrap them with ``.\n221\t\n222\tFor each component, decide:\n223\t\n224\t**Product details** (name, price) rarely change. Cache the data function with `use cache`:\n225\t\n226\t```tsx filename=\"app/shop/[slug]/page.tsx\"\n227\tasync function ProductInfo({ params }: { params: Promise<{ slug: string }> }) {\n228\t const { slug } = await params\n229\t const product = await getProduct(slug)\n230\t return (\n231\t <>\n232\t {product.name} \n233\t ${product.price}
\n234\t >\n235\t )\n236\t}\n237\t\n238\tasync function getProduct(slug: string) {\n239\t 'use cache'\n240\t return db.products.findBySlug(slug)\n241\t}\n242\t```\n243\t\n244\t> **Good to know:** In serverless deployments, in-memory caching with `\"use cache\"` will not persist across instances. Consider using [`\"use cache: remote\"`](/docs/app/api-reference/directives/use-cache-remote) for persistent caching.\n245\t\n246\t**Inventory** must be fresh each request. Leave it uncached:\n247\t\n248\t```tsx filename=\"app/shop/[slug]/page.tsx\"\n249\tasync function Inventory({ params }: { params: Promise<{ slug: string }> }) {\n250\t const { slug } = await params\n251\t const item = await db.inventory.findBySlug(slug)\n252\t return {item.count} in stock
\n253\t}\n254\t```\n255\t\n256\tThe page passes `params` to each component and wraps them with ``:\n257\t\n258\t```tsx filename=\"app/shop/[slug]/page.tsx\" highlight={4,9-14}\n259\timport { Suspense } from 'react'\n260\timport { db } from '@/lib/db'\n261\t\n262\texport const unstable_instant = true\n263\t\n264\texport default function ProductPage(props: PageProps<'/shop/[slug]'>) {\n265\t return (\n266\t \n267\t
Loading product...}>\n268\t \n269\t \n270\t
Checking availability...}>\n271\t \n272\t \n273\t
\n274\t )\n275\t}\n276\t```\n277\t\n278\tValidation passes. Open the DevTools and try a client navigation. The product name and price appear immediately, and \"Checking availability...\" shows where inventory will stream in.\n279\t\n280\t\n281\tHow validation simulates different navigations \n282\t\n283\tWhen you add `unstable_instant` to a route, Next.js checks both the initial page load and client navigations at different points in the route hierarchy.\n284\t\n285\tFor a route like `/shop/[slug]`, validation checks:\n286\t\n287\t- **Page load**: the full tree renders from the root. The root layout `` catches everything.\n288\t- **Client navigation** (e.g. from `/shop/shoes` to `/shop/hats`): the `/shop` layout is already mounted and only the page below it re-renders. A `` boundary in the root layout does not cover this navigation.\n289\t\n290\tEach case is validated independently. A `` boundary that covers one navigation path might not cover another. This is why a page can pass the page load check but fail for client navigations, and why catching these issues by hand is difficult as the number of routes grows.\n291\t\n292\t \n293\t\n294\t## Opting out with `instant = false`\n295\t\n296\tNot every layout or page can be instant. A dashboard layout that reads cookies and fetches user-specific data might be too dynamic for the first visit. You can set `instant = false` on any layout or page to exempt it from validation:\n297\t\n298\t```tsx filename=\"app/dashboard/layout.tsx\"\n299\texport const unstable_instant = false\n300\t```\n301\t\n302\tThis tells validation: navigating to `/dashboard` from outside does not need to be instant, but sibling navigations within it still do. Navigating from `/dashboard/a` to `/dashboard/b` can still be checked by adding `instant` to the page segments under `/dashboard`.\n303\t\n304\t## Next steps\n305\t\n306\t- [`instant` API reference](/docs/app/api-reference/file-conventions/route-segment-config/instant) for all configuration options, including runtime prefetching and incremental adoption with `instant = false`\n307\t- [Caching](/docs/app/getting-started/caching) for background on `use cache`, Suspense, and Partial Prerendering\n308\t- [Revalidating](/docs/app/getting-started/revalidating) for how to expire cached data with `cacheLife` and `updateTag`\n309\t"
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+ "is_error": false
+ }
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+ "content": "Fixed — the product title now appears immediately on navigation.\n\n**The problem:** `app/product/page.tsx` awaited `getInventory()` at the top level of the page component. That function calls `connection()`, marking the data as uncached and request-time-only. With Cache Components enabled (this project's `next.config.ts`), uncached data outside a `` boundary makes the navigation *blocking*: clicking \"View Product\" from home kept the old page visible until the server finished rendering, so even the static title waited on the inventory fetch. This is exactly the anti-pattern described in this version's `instant-navigation` guide.\n\n**The fix** in `app/product/page.tsx`:\n- The page component is now synchronous, so the `Premium Widget ` is part of the prerendered static shell that renders instantly from the prefetch.\n- The inventory fetch moved into an async ` ` component wrapped in ``, so the stock count and price stream in behind a \"Checking availability...\" fallback.\n- Added `export const unstable_instant = true`, which makes Next.js validate during development that navigating to this page stays instant — if someone later adds blocking data outside a boundary, the dev overlay will flag it.\n\nVerified with a production build: `/product` now shows as `◐ (Partial Prerender)`, and the prerendered HTML contains the title and the fallback. (The build also auto-adjusted `tsconfig.json` — standard Next.js housekeeping.)\n\nOne judgment call: I left the price inside the dynamic section because `getInventory()` currently generates it per-request alongside the stock count. If price is actually stable, it could be cached with `use cache` and moved into the instant shell too.",
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+ "success": true
+ },
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+ },
+ {
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+ "success": true
+ },
+ {
+ "command": "npx next build 2>&1 | tail -30",
+ "success": true
+ },
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+ "command": "grep -o 'Premium Widget' /workspace/.next/server/app/product.html && grep -o 'Checking availability' /workspace/.next/server/app/product.html",
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+}
\ No newline at end of file
diff --git a/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/run-3/outputs/eval.txt b/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/run-3/outputs/eval.txt
new file mode 100644
index 000000000..2c5559426
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/run-3/outputs/eval.txt
@@ -0,0 +1,60 @@
+
+ RUN v3.2.6 /workspace
+
+ ❯ EVAL.ts (1 test | 1 failed) 7ms
+ × unstable_instant exported from the product route 6ms
+ → expected 'import { Suspense } from \'react\'\ni…' to match /prefetch\s*:\s*['"]static['"]/
+
+ Test Files 1 failed (1)
+ Tests 1 failed (1)
+ Start at 23:52:46
+ Duration 208ms (transform 27ms, setup 0ms, collect 21ms, tests 7ms, environment 0ms, prepare 62ms)
+
+
+⎯⎯⎯⎯⎯⎯⎯ Failed Tests 1 ⎯⎯⎯⎯⎯⎯⎯
+
+ FAIL EVAL.ts > unstable_instant exported from the product route
+AssertionError: expected 'import { Suspense } from \'react\'\ni…' to match /prefetch\s*:\s*['"]static['"]/
+
+[32m- Expected:[39m
+/prefetch\s*:\s*['"]static['"]/
+
+[31m+ Received:[39m
+"import { Suspense } from 'react'
+import { getInventory } from '@/lib/data'
+
+export const unstable_instant = true
+
+export default function ProductPage() {
+ return (
+
+ Premium Widget
+ Checking availability...}>
+
+
+
+ )
+}
+
+async function Inventory() {
+ const inventory = await getInventory()
+
+ return (
+ <>
+ {inventory.count} in stock
+ Price: ${inventory.price}
+ >
+ )
+}
+"
+
+ ❯ EVAL.ts:68:32
+ 66| /export\s+(const|var|let)\s+unstable_instant\b/
+ 67| )
+ 68| expect(productPage!.content).toMatch(/prefetch\s*:\s*['"]static['"]/)
+ | ^
+ 69| })
+ 70|
+
+⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯[1/1]⎯
+
diff --git a/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/run-3/outputs/scripts/build.txt b/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/run-3/outputs/scripts/build.txt
new file mode 100644
index 000000000..c9cb141c1
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/run-3/outputs/scripts/build.txt
@@ -0,0 +1,28 @@
+
+> build
+> next build
+
+▲ Next.js 16.3.0-canary.46 (Turbopack)
+- Cache Components enabled
+
+ Creating an optimized production build ...
+✓ Compiled successfully in 4.0s
+ Running TypeScript ...
+ Finished TypeScript in 1727ms ...
+ Collecting page data using 1 worker ...
+ Generating static pages using 1 worker (0/4) ...
+ Generating static pages using 1 worker (1/4)
+ Generating static pages using 1 worker (2/4)
+ Generating static pages using 1 worker (3/4)
+✓ Generating static pages using 1 worker (4/4) in 167ms
+ Finalizing page optimization ...
+
+Route (app)
+┌ ○ /
+├ ○ /_not-found
+└ ◐ /product
+
+
+○ (Static) prerendered as static content
+◐ (Partial Prerender) prerendered as static HTML with dynamic server-streamed content
+
diff --git a/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/run-3/result.json b/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/run-3/result.json
new file mode 100644
index 000000000..84111ca47
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/run-3/result.json
@@ -0,0 +1,75 @@
+{
+ "status": "failed",
+ "duration": 232.19,
+ "model": "claude-fable-5",
+ "transcriptPath": "./transcript.json",
+ "transcriptRawPath": "./transcript-raw.jsonl",
+ "o11y": {
+ "totalTurns": 4,
+ "toolCalls": {
+ "file_read": 3,
+ "file_write": 1,
+ "file_edit": 0,
+ "shell": 8,
+ "web_fetch": 0,
+ "web_search": 0,
+ "glob": 0,
+ "grep": 0,
+ "list_dir": 0,
+ "agent_task": 0,
+ "unknown": 0
+ },
+ "totalToolCalls": 12,
+ "webFetches": [],
+ "filesRead": [
+ "/workspace/app/product/page.tsx",
+ "/workspace/app/page.tsx",
+ "/workspace/lib/data.ts"
+ ],
+ "filesModified": [
+ "/workspace/app/product/page.tsx"
+ ],
+ "shellCommands": [
+ {
+ "command": "find /workspace -type f -not -path \"*/node_modules/*\" -not -path \"*/.git/*\" | head -50 && echo --- && ls /workspace/node_modules/next/dist/docs/ 2>/dev/null | head -50",
+ "success": true
+ },
+ {
+ "command": "ls -R /workspace/node_modules/next/dist/docs/01-app | head -80",
+ "success": true
+ },
+ {
+ "command": "cat /workspace/node_modules/next/dist/docs/01-app/02-guides/instant-navigation.md 2>/dev/null | head -120; echo ===; cat /workspace/next.config.ts",
+ "success": true
+ },
+ {
+ "command": "sed -n '120,260p' /workspace/node_modules/next/dist/docs/01-app/02-guides/instant-navigation.md",
+ "success": true
+ },
+ {
+ "command": "sed -n '260,330p' /workspace/node_modules/next/dist/docs/01-app/02-guides/instant-navigation.md; echo ===INSTANT-REF===; find /workspace/node_modules/next/dist/docs -path \"*route-segment-config*\" -name \"*instant*\"; echo ===; cat /workspace/app/layout.tsx",
+ "success": true
+ },
+ {
+ "command": "head -80 /workspace/node_modules/next/dist/docs/01-app/03-api-reference/03-file-conventions/02-route-segment-config/instant.md",
+ "success": true
+ },
+ {
+ "command": "npm run build 2>&1 | tail -30",
+ "success": true
+ },
+ {
+ "command": "grep -o \"Premium Widget\" /workspace/.next/server/app/product.html && grep -o \"Checking availability\" /workspace/.next/server/app/product.html",
+ "success": true
+ }
+ ],
+ "errors": [],
+ "thinkingBlocks": 0
+ },
+ "outputPaths": {
+ "eval": "./outputs/eval.txt",
+ "scripts": {
+ "build": "./outputs/scripts/build.txt"
+ }
+ }
+}
\ No newline at end of file
diff --git a/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/run-3/transcript-raw.jsonl b/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/run-3/transcript-raw.jsonl
new file mode 100644
index 000000000..a050e612e
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/run-3/transcript-raw.jsonl
@@ -0,0 +1,49 @@
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+{"type":"queue-operation","operation":"dequeue","timestamp":"2026-06-09T23:51:13.169Z","sessionId":"7f5b6d54-f6c5-4920-b8a8-96fd8515ab7a"}
+{"parentUuid":null,"isSidechain":false,"promptId":"b15dd66f-68f9-470f-9dbc-bb754eec5def","type":"user","message":{"role":"user","content":"Navigating from home to the product page is slow. The title should appear immediately.\n"},"uuid":"9d077a4f-a96d-42d8-8212-3ca8cf1aa937","timestamp":"2026-06-09T23:51:13.258Z","permissionMode":"bypassPermissions","promptSource":"sdk","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"7f5b6d54-f6c5-4920-b8a8-96fd8515ab7a","version":"2.1.170","gitBranch":"master"}
+{"parentUuid":"9d077a4f-a96d-42d8-8212-3ca8cf1aa937","isSidechain":false,"attachment":{"type":"skill_listing","content":"- deep-research: Deep research harness — fan-out web searches, fetch sources, adversarially verify claims, synthesize a cited report. - When the user wants a deep, multi-source, fact-checked research report on any topic. BEFORE invoking, check if the question is specific enough to research directly — if underspecified (e.g., \"what car to buy\" without budget/use-case/region), ask 2-3 clarifying questions to narrow scope. Then pass the refined question as args, weaving the answers in.\n- update-config: Use this skill to configure the Claude Code harness via settings.json. Automated behaviors (\"from now on when X\", \"each time X\", \"whenever X\", \"before/after X\") require hooks configured in settings.json - the harness executes these, not Claude, so memory/preferences cannot fulfill them. 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Quality only — it does not hunt for bugs; use /code-review for that.\n- fewer-permission-prompts: Scan your transcripts for common read-only Bash and MCP tool calls, then add a prioritized allowlist to project .claude/settings.json to reduce permission prompts.\n- loop: Run a prompt or slash command on a recurring interval (e.g. /loop 5m /foo, defaults to 10m) - When the user wants to set up a recurring task, poll for status, or run something repeatedly on an interval (e.g. \"check the deploy every 5 minutes\", \"keep running /babysit-prs\"). 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+{"type":"ai-title","aiTitle":"Speed up product page navigation","sessionId":"7f5b6d54-f6c5-4920-b8a8-96fd8515ab7a"}
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\n8\t View Product\n9\t \n10\t )\n11\t}\n12\t"}]},"uuid":"8d070890-b464-484d-85c5-3d519df5d6a2","timestamp":"2026-06-09T23:51:24.050Z","toolUseResult":{"type":"text","file":{"filePath":"/workspace/app/page.tsx","content":"import Link from 'next/link'\n\nexport default function Home() {\n return (\n \n Home \n Welcome to our store!
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+{"parentUuid":"2b5ef982-3ed0-4f08-8569-234665aba6b8","isSidechain":false,"promptId":"b15dd66f-68f9-470f-9dbc-bb754eec5def","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_017ghrUap2fynNejyTvdknDa","type":"tool_result","content":"---\ntitle: Ensuring instant navigations\ndescription: Learn how to structure your app to prefetch and prerender more content, providing instant page loads and client navigations.\nnav_title: Instant navigation\nversion: draft\nrelated:\n title: Learn more\n description: Explore the full instant API, caching, and revalidation.\n links:\n - app/api-reference/file-conventions/route-segment-config/instant\n - app/getting-started/caching\n - app/getting-started/revalidating\n - app/guides/prefetching\n---\n\n{/* AI agent hint: Always export `unstable_instant` from routes that should navigate instantly. It validates the caching structure during development. */}\n\nWith [Cache Components](/docs/app/api-reference/config/next-config-js/cacheComponents) enabled, `use cache` and `` let you control what gets cached and what streams in dynamically. When these are in the right place, client-side navigations are instant.\n\nThe [`unstable_instant`](/docs/app/api-reference/file-conventions/route-segment-config/instant) route segment config helps you place `` boundaries and `use cache` correctly. Add it to any page or layout and Next.js will check during development that navigating to that route produces an instant [static shell](/docs/app/glossary#static-shell).\n\nThis guide starts with a product page that loads instantly on navigation, then shows how to catch and fix a page where a misplaced `` boundary blocks the navigation. Nothing visible changes until the server finishes rendering.\n\n> **Good to know:** A navigation is considered **instant** when, assuming caches are warm, the page renders without waiting on any network request. Cached content appears immediately and anything uncached streams in behind a `` fallback. A navigation is considered **blocking** when uncached data outside a `` boundary forces the old page to stay visible until the server finishes rendering.\n\n## A page that navigates instantly\n\nA product page at `/store/[slug]` that fetches two pieces of data: product details (name, price) and live inventory.\n\n- There is no `generateStaticParams`, meaning `slug` is only known at request time\n- Both components await `params` to get the `slug`, which suspends. Each has its own `` boundary\n- **Product info** rarely changes and is queried from the db using a cached function\n- **Inventory** must be fresh on each request. The db query is inside a `` boundary\n\n```tsx filename=\"app/store/[slug]/page.tsx\" highlight={4,9-14,32-34}\nimport { Suspense } from 'react'\nimport { db } from '@/lib/db'\n\nexport const unstable_instant = true\n\nexport default function ProductPage(props: PageProps<'/store/[slug]'>) {\n return (\n \n
Loading product...}>\n \n \n
Checking availability...}>\n \n \n
\n )\n}\n\ntype Params = PageProps<'/store/[slug]'>['params']\n\nasync function ProductInfo({ params }: { params: Params }) {\n const { slug } = await params\n const product = await getProduct(slug)\n return (\n <>\n {product.name} \n ${product.price}
\n >\n )\n}\n\nasync function getProduct(slug: string) {\n 'use cache'\n return db.products.findBySlug(slug)\n}\n\nasync function Inventory({ params }: { params: Params }) {\n const { slug } = await params\n const item = await db.inventory.findBySlug(slug)\n return {item.count} in stock
\n}\n```\n\nThe [`unstable_instant`](/docs/app/api-reference/file-conventions/route-segment-config/instant) export tells Next.js to check that navigating to this page from any other page in your app is instant. It does this during development. If a component would delay the transition (for example, by fetching uncached data without a local `` boundary), the error overlay tells you which one and suggests a fix.\n\nValidation runs automatically on every page load using the real request from your browser, so dynamic params like `[slug]` are checked against actual values as you navigate.\n\n## Visualize loading states with the Next.js DevTools\n\nThe Next.js DevTools let you see what users see on page loads and client navigations before dynamic data streams in. Use it to verify your loading states look right, check that the right content appears immediately, and iterate on where to place `` boundaries.\n\nThe Navigation Inspector is available when Cache Components is enabled:\n\n```ts filename=\"next.config.ts\" highlight={4}\nimport type { NextConfig } from 'next'\n\nconst nextConfig: NextConfig = {\n cacheComponents: true,\n}\n\nexport default nextConfig\n```\n\nOpen the Next.js DevTools and select **Navigation Inspector**, then click **Start Capturing**. While capturing is active:\n\n- Refresh the page to freeze the initial static UI generated for the route, before any dynamic data streams in.\n- Click a link to freeze the prefetched UI for the destination route.\n\nWhen the UI is frozen, click **Continue Rendering** to let the current navigation finish while keeping the Navigation Inspector in capturing mode. Click **Stop Capturing** when you are done inspecting loading states.\n\nTry refreshing the product page. Two separate fallbacks appear: \"Loading product...\" and \"Checking availability...\". On the first visit the cache is cold and both fallbacks are visible. Navigate to the page again and the product name appears immediately from cache.\n\nNow click a link from `/store/shoes` to `/store/hats`. The product name and price appear immediately (cached). \"Checking availability...\" shows where inventory will stream in.\n\n> **Good to know:** Page loads and client navigations can produce different shells. Client-side hooks like `useSearchParams` suspend on page loads (search params are not known at build time) but resolve synchronously on client navigations (the router already has the params).\n\n\nWhy page loads and client navigations produce different shells \n\nOn a page load, the entire page renders from the document root, including all layouts. Anything that suspends is caught by the nearest `` boundary in the entire document tree.\n\nOn a client navigation (clicking `next/link`), Next.js only re-renders below the layout that the source and destination routes share. Components above that shared layout are not re-rendered. This means that a `` boundary in the root layout covers everything on a page load, but for a client navigation between `/store/shoes` and `/store/hats`, the shared layout is `/store` and Next.js renders the part of the document below that point. The root `` sits above it and does not trigger for this navigation.\n\nThis is also why client-side hooks behave differently. `useSearchParams()` suspends during server rendering because search params are not available at build time. But on a client navigation, the router already has the params from the URL and the hook resolves synchronously. The same component can appear in the instant shell on a client navigation but behind a fallback on a page load.\n\n===\nimport type { NextConfig } from 'next'\n\nconst nextConfig: NextConfig = {\n cacheComponents: true,\n}\n\nexport default nextConfig","is_error":false}]},"uuid":"bdb5ff62-d46e-42d0-80a6-18c6509ca022","timestamp":"2026-06-09T23:51:35.451Z","toolUseResult":{"stdout":"---\ntitle: Ensuring instant navigations\ndescription: Learn how to structure your app to prefetch and prerender more content, providing instant page loads and client navigations.\nnav_title: Instant navigation\nversion: draft\nrelated:\n title: Learn more\n description: Explore the full instant API, caching, and revalidation.\n links:\n - app/api-reference/file-conventions/route-segment-config/instant\n - app/getting-started/caching\n - app/getting-started/revalidating\n - app/guides/prefetching\n---\n\n{/* AI agent hint: Always export `unstable_instant` from routes that should navigate instantly. It validates the caching structure during development. */}\n\nWith [Cache Components](/docs/app/api-reference/config/next-config-js/cacheComponents) enabled, `use cache` and `` let you control what gets cached and what streams in dynamically. When these are in the right place, client-side navigations are instant.\n\nThe [`unstable_instant`](/docs/app/api-reference/file-conventions/route-segment-config/instant) route segment config helps you place `` boundaries and `use cache` correctly. Add it to any page or layout and Next.js will check during development that navigating to that route produces an instant [static shell](/docs/app/glossary#static-shell).\n\nThis guide starts with a product page that loads instantly on navigation, then shows how to catch and fix a page where a misplaced `` boundary blocks the navigation. Nothing visible changes until the server finishes rendering.\n\n> **Good to know:** A navigation is considered **instant** when, assuming caches are warm, the page renders without waiting on any network request. Cached content appears immediately and anything uncached streams in behind a `` fallback. A navigation is considered **blocking** when uncached data outside a `` boundary forces the old page to stay visible until the server finishes rendering.\n\n## A page that navigates instantly\n\nA product page at `/store/[slug]` that fetches two pieces of data: product details (name, price) and live inventory.\n\n- There is no `generateStaticParams`, meaning `slug` is only known at request time\n- Both components await `params` to get the `slug`, which suspends. Each has its own `` boundary\n- **Product info** rarely changes and is queried from the db using a cached function\n- **Inventory** must be fresh on each request. The db query is inside a `` boundary\n\n```tsx filename=\"app/store/[slug]/page.tsx\" highlight={4,9-14,32-34}\nimport { Suspense } from 'react'\nimport { db } from '@/lib/db'\n\nexport const unstable_instant = true\n\nexport default function ProductPage(props: PageProps<'/store/[slug]'>) {\n return (\n \n
Loading product...}>\n \n \n
Checking availability...}>\n \n \n
\n )\n}\n\ntype Params = PageProps<'/store/[slug]'>['params']\n\nasync function ProductInfo({ params }: { params: Params }) {\n const { slug } = await params\n const product = await getProduct(slug)\n return (\n <>\n {product.name} \n ${product.price}
\n >\n )\n}\n\nasync function getProduct(slug: string) {\n 'use cache'\n return db.products.findBySlug(slug)\n}\n\nasync function Inventory({ params }: { params: Params }) {\n const { slug } = await params\n const item = await db.inventory.findBySlug(slug)\n return {item.count} in stock
\n}\n```\n\nThe [`unstable_instant`](/docs/app/api-reference/file-conventions/route-segment-config/instant) export tells Next.js to check that navigating to this page from any other page in your app is instant. It does this during development. If a component would delay the transition (for example, by fetching uncached data without a local `` boundary), the error overlay tells you which one and suggests a fix.\n\nValidation runs automatically on every page load using the real request from your browser, so dynamic params like `[slug]` are checked against actual values as you navigate.\n\n## Visualize loading states with the Next.js DevTools\n\nThe Next.js DevTools let you see what users see on page loads and client navigations before dynamic data streams in. Use it to verify your loading states look right, check that the right content appears immediately, and iterate on where to place `` boundaries.\n\nThe Navigation Inspector is available when Cache Components is enabled:\n\n```ts filename=\"next.config.ts\" highlight={4}\nimport type { NextConfig } from 'next'\n\nconst nextConfig: NextConfig = {\n cacheComponents: true,\n}\n\nexport default nextConfig\n```\n\nOpen the Next.js DevTools and select **Navigation Inspector**, then click **Start Capturing**. While capturing is active:\n\n- Refresh the page to freeze the initial static UI generated for the route, before any dynamic data streams in.\n- Click a link to freeze the prefetched UI for the destination route.\n\nWhen the UI is frozen, click **Continue Rendering** to let the current navigation finish while keeping the Navigation Inspector in capturing mode. Click **Stop Capturing** when you are done inspecting loading states.\n\nTry refreshing the product page. Two separate fallbacks appear: \"Loading product...\" and \"Checking availability...\". On the first visit the cache is cold and both fallbacks are visible. Navigate to the page again and the product name appears immediately from cache.\n\nNow click a link from `/store/shoes` to `/store/hats`. The product name and price appear immediately (cached). \"Checking availability...\" shows where inventory will stream in.\n\n> **Good to know:** Page loads and client navigations can produce different shells. Client-side hooks like `useSearchParams` suspend on page loads (search params are not known at build time) but resolve synchronously on client navigations (the router already has the params).\n\n\nWhy page loads and client navigations produce different shells \n\nOn a page load, the entire page renders from the document root, including all layouts. Anything that suspends is caught by the nearest `` boundary in the entire document tree.\n\nOn a client navigation (clicking `next/link`), Next.js only re-renders below the layout that the source and destination routes share. Components above that shared layout are not re-rendered. This means that a `` boundary in the root layout covers everything on a page load, but for a client navigation between `/store/shoes` and `/store/hats`, the shared layout is `/store` and Next.js renders the part of the document below that point. The root `` sits above it and does not trigger for this navigation.\n\nThis is also why client-side hooks behave differently. `useSearchParams()` suspends during server rendering because search params are not available at build time. But on a client navigation, the router already has the params from the URL and the hook resolves synchronously. The same component can appear in the instant shell on a client navigation but behind a fallback on a page load.\n\n===\nimport type { NextConfig } from 'next'\n\nconst nextConfig: NextConfig = {\n cacheComponents: true,\n}\n\nexport default nextConfig","stderr":"","interrupted":false,"isImage":false,"noOutputExpected":false},"sourceToolAssistantUUID":"2b5ef982-3ed0-4f08-8569-234665aba6b8","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"7f5b6d54-f6c5-4920-b8a8-96fd8515ab7a","version":"2.1.170","gitBranch":"master"}
+{"type":"last-prompt","lastPrompt":"Navigating from home to the product page is slow. The title should appear immediately.","leafUuid":"bdb5ff62-d46e-42d0-80a6-18c6509ca022","sessionId":"7f5b6d54-f6c5-4920-b8a8-96fd8515ab7a"}
+{"type":"ai-title","aiTitle":"Speed up product page navigation","sessionId":"7f5b6d54-f6c5-4920-b8a8-96fd8515ab7a"}
+{"parentUuid":"bdb5ff62-d46e-42d0-80a6-18c6509ca022","isSidechain":false,"message":{"id":"gen_01KTQCRXBJV2HD0QX7NR7CE1WX","type":"message","role":"assistant","content":[{"type":"thinking","thinking":"","signature":"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"}],"model":"claude-fable-5","stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":2561,"cache_read_input_tokens":34074,"output_tokens":693,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":0,"ephemeral_5m_input_tokens":2561},"inference_geo":"","iterations":[],"speed":"standard"},"stop_details":null},"type":"assistant","uuid":"3e23c23d-ef25-45db-9a12-3e837604ec07","timestamp":"2026-06-09T23:51:46.173Z","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"7f5b6d54-f6c5-4920-b8a8-96fd8515ab7a","version":"2.1.170","gitBranch":"master"}
+{"parentUuid":"3e23c23d-ef25-45db-9a12-3e837604ec07","isSidechain":false,"message":{"id":"gen_01KTQCRXBJV2HD0QX7NR7CE1WX","type":"message","role":"assistant","content":[{"type":"text","text":"This is a Cache Components build of Next.js. Let me read the rest of this guide and the `unstable_instant` reference to verify the right fix."}],"model":"claude-fable-5","stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":2561,"cache_read_input_tokens":34074,"output_tokens":693,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":0,"ephemeral_5m_input_tokens":2561},"inference_geo":"","iterations":[],"speed":"standard"},"stop_details":null},"type":"assistant","uuid":"812b67db-dc2e-4366-a43e-09337c26f936","timestamp":"2026-06-09T23:51:46.173Z","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"7f5b6d54-f6c5-4920-b8a8-96fd8515ab7a","version":"2.1.170","gitBranch":"master"}
+{"parentUuid":"812b67db-dc2e-4366-a43e-09337c26f936","isSidechain":false,"message":{"id":"gen_01KTQCRXBJV2HD0QX7NR7CE1WX","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_012EhAsz4PGHVFkLWYgUVLuD","name":"Bash","input":{"command":"sed -n '120,260p' /workspace/node_modules/next/dist/docs/01-app/02-guides/instant-navigation.md","description":"Read rest of instant-navigation guide"}}],"model":"claude-fable-5","stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":2561,"cache_read_input_tokens":34074,"output_tokens":693,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":0,"ephemeral_5m_input_tokens":2561},"inference_geo":"","iterations":[],"speed":"standard"},"stop_details":null},"type":"assistant","uuid":"25fc6cf8-39cf-4da8-949f-9a6955a8284c","timestamp":"2026-06-09T23:51:47.151Z","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"7f5b6d54-f6c5-4920-b8a8-96fd8515ab7a","version":"2.1.170","gitBranch":"master"}
+{"parentUuid":"25fc6cf8-39cf-4da8-949f-9a6955a8284c","isSidechain":false,"promptId":"b15dd66f-68f9-470f-9dbc-bb754eec5def","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_012EhAsz4PGHVFkLWYgUVLuD","type":"tool_result","content":" \n\n## Prevent regressions with e2e tests\n\nValidation catches structural problems during development. To prevent regressions as the codebase evolves, the `@next/playwright` package includes an `instant()` helper that asserts on exactly what appears in the instant shell:\n\n```typescript filename=\"e2e/navigation.test.ts\"\nimport { test, expect } from '@playwright/test'\nimport { instant } from '@next/playwright'\n\ntest('product title appears instantly', async ({ page }) => {\n await page.goto('/store/shoes')\n\n await instant(page, async () => {\n await page.click('a[href=\"/store/hats\"]')\n await expect(page.locator('h1')).toContainText('Baseball Cap')\n })\n\n // After instant() exits, dynamic content streams in\n await expect(page.locator('text=in stock')).toBeVisible()\n})\n```\n\nInside the `instant()` callback, only the static shell is visible. After the callback finishes, dynamic content streams in and you can assert on the full page.\n\nThere is no need to write an `instant()` test for every navigation. Use `instant()` for the user flows that matter most. In the future build-time `instant` validation will be available to cover a broader set of navigation cases.\n\n## Fixing a navigation that blocks\n\nNow consider a different route, `/shop/[slug]`. For the sake of this example it has the same data requirements as `/store/[slug]`, but is implemented without local `` boundaries or caching:\n\n```tsx filename=\"app/shop/[slug]/page.tsx\"\nimport { db } from '@/lib/db'\n\nexport default async function ProductPage(props: PageProps<'/shop/[slug]'>) {\n const { slug } = await props.params\n const product = await db.products.findBySlug(slug)\n const item = await db.inventory.findBySlug(slug)\n return (\n \n
{product.name} \n
${product.price}
\n
{item.count} in stock
\n
\n )\n}\n```\n\nThe root layout wraps `{children}` in a `` boundary:\n\n```tsx filename=\"app/layout.tsx\" highlight={9}\nexport default function RootLayout({\n children,\n}: {\n children: React.ReactNode\n}) {\n return (\n \n \n Loading...}>{children} \n \n \n )\n}\n```\n\nOn an initial page load, the root `` catches the async work and streams the page in behind the `fallback`.\n\nEverything appears to work. But on a client navigation from `/shop/shoes` to `/shop/hats`, the shared layout is `/shop` and only the content below it re-renders. The root `` boundary is above that layout and is not triggered for this navigation. The page fetches uncached data with no local boundary, blocking the navigation until the server finishes rendering.\n\nYou can see this with the DevTools. Try a **page load**: the root `` catches everything and \"Loading...\" appears. Now try a **client navigation** between two `/shop/` pages: no prefetched UI shows up because there is no `` boundary below the shared layout. Navigations from other routes to `/shop/` appear blocked too.\n\n### Step 1: Add instant validation\n\nAdd an `unstable_instant` export to the page to surface the problem:\n\n```tsx filename=\"app/shop/[slug]/page.tsx\" highlight={3}\nimport { db } from '@/lib/db'\n\nexport const unstable_instant = true\n\nexport default async function ProductPage(props: PageProps<'/shop/[slug]'>) {\n const { slug } = await props.params\n const product = await db.products.findBySlug(slug)\n const item = await db.inventory.findBySlug(slug)\n return (\n \n
{product.name} \n
${product.price}
\n
{item.count} in stock
\n
\n )\n}\n```\n\nNext.js now simulates navigations at every shared layout boundary in the route. In this case, both components await `params` and access uncached data. These need to be wrapped by a `` boundary. The first thing validation catches is the `await params` at the top level.\n\n### Step 2: Fix the validation error\n\nThere is no `generateStaticParams` here, `slug` is only known at request time. Because awaiting `params` suspends, the page component can't do it at the top level. Instead, move the `await params` into separate components, pass `params` to each, and wrap them with ``.\n\nFor each component, decide:\n\n**Product details** (name, price) rarely change. Cache the data function with `use cache`:\n\n```tsx filename=\"app/shop/[slug]/page.tsx\"\nasync function ProductInfo({ params }: { params: Promise<{ slug: string }> }) {\n const { slug } = await params\n const product = await getProduct(slug)\n return (\n <>\n {product.name} \n ${product.price}
\n >\n )\n}\n\nasync function getProduct(slug: string) {\n 'use cache'\n return db.products.findBySlug(slug)\n}\n```\n\n> **Good to know:** In serverless deployments, in-memory caching with `\"use cache\"` will not persist across instances. Consider using [`\"use cache: remote\"`](/docs/app/api-reference/directives/use-cache-remote) for persistent caching.\n\n**Inventory** must be fresh each request. Leave it uncached:\n\n```tsx filename=\"app/shop/[slug]/page.tsx\"\nasync function Inventory({ params }: { params: Promise<{ slug: string }> }) {\n const { slug } = await params\n const item = await db.inventory.findBySlug(slug)\n return {item.count} in stock
\n}\n```\n\nThe page passes `params` to each component and wraps them with ``:\n\n```tsx filename=\"app/shop/[slug]/page.tsx\" highlight={4,9-14}\nimport { Suspense } from 'react'\nimport { db } from '@/lib/db'","is_error":false}]},"uuid":"0da308ed-93ca-4b37-a27f-62d082fb95fe","timestamp":"2026-06-09T23:51:47.184Z","toolUseResult":{"stdout":" \n\n## Prevent regressions with e2e tests\n\nValidation catches structural problems during development. To prevent regressions as the codebase evolves, the `@next/playwright` package includes an `instant()` helper that asserts on exactly what appears in the instant shell:\n\n```typescript filename=\"e2e/navigation.test.ts\"\nimport { test, expect } from '@playwright/test'\nimport { instant } from '@next/playwright'\n\ntest('product title appears instantly', async ({ page }) => {\n await page.goto('/store/shoes')\n\n await instant(page, async () => {\n await page.click('a[href=\"/store/hats\"]')\n await expect(page.locator('h1')).toContainText('Baseball Cap')\n })\n\n // After instant() exits, dynamic content streams in\n await expect(page.locator('text=in stock')).toBeVisible()\n})\n```\n\nInside the `instant()` callback, only the static shell is visible. After the callback finishes, dynamic content streams in and you can assert on the full page.\n\nThere is no need to write an `instant()` test for every navigation. Use `instant()` for the user flows that matter most. In the future build-time `instant` validation will be available to cover a broader set of navigation cases.\n\n## Fixing a navigation that blocks\n\nNow consider a different route, `/shop/[slug]`. For the sake of this example it has the same data requirements as `/store/[slug]`, but is implemented without local `` boundaries or caching:\n\n```tsx filename=\"app/shop/[slug]/page.tsx\"\nimport { db } from '@/lib/db'\n\nexport default async function ProductPage(props: PageProps<'/shop/[slug]'>) {\n const { slug } = await props.params\n const product = await db.products.findBySlug(slug)\n const item = await db.inventory.findBySlug(slug)\n return (\n \n
{product.name} \n
${product.price}
\n
{item.count} in stock
\n
\n )\n}\n```\n\nThe root layout wraps `{children}` in a `` boundary:\n\n```tsx filename=\"app/layout.tsx\" highlight={9}\nexport default function RootLayout({\n children,\n}: {\n children: React.ReactNode\n}) {\n return (\n \n \n Loading...}>{children} \n \n \n )\n}\n```\n\nOn an initial page load, the root `` catches the async work and streams the page in behind the `fallback`.\n\nEverything appears to work. But on a client navigation from `/shop/shoes` to `/shop/hats`, the shared layout is `/shop` and only the content below it re-renders. The root `` boundary is above that layout and is not triggered for this navigation. The page fetches uncached data with no local boundary, blocking the navigation until the server finishes rendering.\n\nYou can see this with the DevTools. Try a **page load**: the root `` catches everything and \"Loading...\" appears. Now try a **client navigation** between two `/shop/` pages: no prefetched UI shows up because there is no `` boundary below the shared layout. Navigations from other routes to `/shop/` appear blocked too.\n\n### Step 1: Add instant validation\n\nAdd an `unstable_instant` export to the page to surface the problem:\n\n```tsx filename=\"app/shop/[slug]/page.tsx\" highlight={3}\nimport { db } from '@/lib/db'\n\nexport const unstable_instant = true\n\nexport default async function ProductPage(props: PageProps<'/shop/[slug]'>) {\n const { slug } = await props.params\n const product = await db.products.findBySlug(slug)\n const item = await db.inventory.findBySlug(slug)\n return (\n \n
{product.name} \n
${product.price}
\n
{item.count} in stock
\n
\n )\n}\n```\n\nNext.js now simulates navigations at every shared layout boundary in the route. In this case, both components await `params` and access uncached data. These need to be wrapped by a `` boundary. The first thing validation catches is the `await params` at the top level.\n\n### Step 2: Fix the validation error\n\nThere is no `generateStaticParams` here, `slug` is only known at request time. Because awaiting `params` suspends, the page component can't do it at the top level. Instead, move the `await params` into separate components, pass `params` to each, and wrap them with ``.\n\nFor each component, decide:\n\n**Product details** (name, price) rarely change. Cache the data function with `use cache`:\n\n```tsx filename=\"app/shop/[slug]/page.tsx\"\nasync function ProductInfo({ params }: { params: Promise<{ slug: string }> }) {\n const { slug } = await params\n const product = await getProduct(slug)\n return (\n <>\n {product.name} \n ${product.price}
\n >\n )\n}\n\nasync function getProduct(slug: string) {\n 'use cache'\n return db.products.findBySlug(slug)\n}\n```\n\n> **Good to know:** In serverless deployments, in-memory caching with `\"use cache\"` will not persist across instances. Consider using [`\"use cache: remote\"`](/docs/app/api-reference/directives/use-cache-remote) for persistent caching.\n\n**Inventory** must be fresh each request. Leave it uncached:\n\n```tsx filename=\"app/shop/[slug]/page.tsx\"\nasync function Inventory({ params }: { params: Promise<{ slug: string }> }) {\n const { slug } = await params\n const item = await db.inventory.findBySlug(slug)\n return {item.count} in stock
\n}\n```\n\nThe page passes `params` to each component and wraps them with ``:\n\n```tsx filename=\"app/shop/[slug]/page.tsx\" highlight={4,9-14}\nimport { Suspense } from 'react'\nimport { db } from '@/lib/db'","stderr":"","interrupted":false,"isImage":false,"noOutputExpected":false},"sourceToolAssistantUUID":"25fc6cf8-39cf-4da8-949f-9a6955a8284c","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"7f5b6d54-f6c5-4920-b8a8-96fd8515ab7a","version":"2.1.170","gitBranch":"master"}
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+{"parentUuid":"bb86703b-568b-449d-a7ef-556d021c80c1","isSidechain":false,"promptId":"b15dd66f-68f9-470f-9dbc-bb754eec5def","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01Em1MvLCtN7VUghfh6vWeUN","type":"tool_result","content":"import { db } from '@/lib/db'\n\nexport const unstable_instant = true\n\nexport default function ProductPage(props: PageProps<'/shop/[slug]'>) {\n return (\n \n
Loading product...}>\n \n \n
Checking availability...}>\n \n \n
\n )\n}\n```\n\nValidation passes. Open the DevTools and try a client navigation. The product name and price appear immediately, and \"Checking availability...\" shows where inventory will stream in.\n\n\nHow validation simulates different navigations \n\nWhen you add `unstable_instant` to a route, Next.js checks both the initial page load and client navigations at different points in the route hierarchy.\n\nFor a route like `/shop/[slug]`, validation checks:\n\n- **Page load**: the full tree renders from the root. The root layout `` catches everything.\n- **Client navigation** (e.g. from `/shop/shoes` to `/shop/hats`): the `/shop` layout is already mounted and only the page below it re-renders. A `` boundary in the root layout does not cover this navigation.\n\nEach case is validated independently. A `` boundary that covers one navigation path might not cover another. This is why a page can pass the page load check but fail for client navigations, and why catching these issues by hand is difficult as the number of routes grows.\n\n \n\n## Opting out with `instant = false`\n\nNot every layout or page can be instant. A dashboard layout that reads cookies and fetches user-specific data might be too dynamic for the first visit. You can set `instant = false` on any layout or page to exempt it from validation:\n\n```tsx filename=\"app/dashboard/layout.tsx\"\nexport const unstable_instant = false\n```\n\nThis tells validation: navigating to `/dashboard` from outside does not need to be instant, but sibling navigations within it still do. Navigating from `/dashboard/a` to `/dashboard/b` can still be checked by adding `instant` to the page segments under `/dashboard`.\n\n## Next steps\n\n- [`instant` API reference](/docs/app/api-reference/file-conventions/route-segment-config/instant) for all configuration options, including runtime prefetching and incremental adoption with `instant = false`\n- [Caching](/docs/app/getting-started/caching) for background on `use cache`, Suspense, and Partial Prerendering\n- [Revalidating](/docs/app/getting-started/revalidating) for how to expire cached data with `cacheLife` and `updateTag`\n===INSTANT-REF===\n/workspace/node_modules/next/dist/docs/01-app/03-api-reference/03-file-conventions/02-route-segment-config/instant.md\n===\nimport type { Metadata } from 'next'\n\nexport const metadata: Metadata = {\n title: 'Shop',\n description: 'E-commerce product store',\n}\n\nexport default function RootLayout({\n children,\n}: Readonly<{\n children: React.ReactNode\n}>) {\n return (\n \n {children}\n \n )\n}","is_error":false}]},"uuid":"5cafc140-6a45-4646-820f-fc880ad1510f","timestamp":"2026-06-09T23:51:55.043Z","toolUseResult":{"stdout":"import { db } from '@/lib/db'\n\nexport const unstable_instant = true\n\nexport default function ProductPage(props: PageProps<'/shop/[slug]'>) {\n return (\n \n
Loading product...}>\n \n \n
Checking availability...}>\n \n \n
\n )\n}\n```\n\nValidation passes. Open the DevTools and try a client navigation. The product name and price appear immediately, and \"Checking availability...\" shows where inventory will stream in.\n\n\nHow validation simulates different navigations \n\nWhen you add `unstable_instant` to a route, Next.js checks both the initial page load and client navigations at different points in the route hierarchy.\n\nFor a route like `/shop/[slug]`, validation checks:\n\n- **Page load**: the full tree renders from the root. The root layout `` catches everything.\n- **Client navigation** (e.g. from `/shop/shoes` to `/shop/hats`): the `/shop` layout is already mounted and only the page below it re-renders. A `` boundary in the root layout does not cover this navigation.\n\nEach case is validated independently. A `` boundary that covers one navigation path might not cover another. This is why a page can pass the page load check but fail for client navigations, and why catching these issues by hand is difficult as the number of routes grows.\n\n \n\n## Opting out with `instant = false`\n\nNot every layout or page can be instant. A dashboard layout that reads cookies and fetches user-specific data might be too dynamic for the first visit. You can set `instant = false` on any layout or page to exempt it from validation:\n\n```tsx filename=\"app/dashboard/layout.tsx\"\nexport const unstable_instant = false\n```\n\nThis tells validation: navigating to `/dashboard` from outside does not need to be instant, but sibling navigations within it still do. Navigating from `/dashboard/a` to `/dashboard/b` can still be checked by adding `instant` to the page segments under `/dashboard`.\n\n## Next steps\n\n- [`instant` API reference](/docs/app/api-reference/file-conventions/route-segment-config/instant) for all configuration options, including runtime prefetching and incremental adoption with `instant = false`\n- [Caching](/docs/app/getting-started/caching) for background on `use cache`, Suspense, and Partial Prerendering\n- [Revalidating](/docs/app/getting-started/revalidating) for how to expire cached data with `cacheLife` and `updateTag`\n===INSTANT-REF===\n/workspace/node_modules/next/dist/docs/01-app/03-api-reference/03-file-conventions/02-route-segment-config/instant.md\n===\nimport type { Metadata } from 'next'\n\nexport const metadata: Metadata = {\n title: 'Shop',\n description: 'E-commerce product store',\n}\n\nexport default function RootLayout({\n children,\n}: Readonly<{\n children: React.ReactNode\n}>) {\n return (\n \n {children}\n \n )\n}","stderr":"","interrupted":false,"isImage":false,"noOutputExpected":false},"sourceToolAssistantUUID":"bb86703b-568b-449d-a7ef-556d021c80c1","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"7f5b6d54-f6c5-4920-b8a8-96fd8515ab7a","version":"2.1.170","gitBranch":"master"}
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+{"parentUuid":"e6fa2075-ba62-44f0-9e49-8c2617a5acc4","isSidechain":false,"promptId":"b15dd66f-68f9-470f-9dbc-bb754eec5def","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01K9fm2NeCrQupAhojmcvHiF","type":"tool_result","content":"---\ntitle: instant\ndescription: API reference for the instant route segment config.\nversion: draft\nrelated:\n title: Next Steps\n description: Learn how to use instant navigations in practice.\n links:\n - app/guides/instant-navigation\n - app/getting-started/caching\n - app/getting-started/revalidating\n - app/api-reference/directives/use-cache\n---\n\nThe `unstable_instant` route segment config controls how Next.js validates whether a navigation into this segment would produce an instant UI.\n\nNext.js uses prefetching to preload navigations for all in-app links on the current page. However, client-side data fetching or partially prerendered results from the server can lead to navigations that don't update the UI immediately. To help you build fast-feeling navigations, `unstable_instant` lets you tell Next.js what to expect from navigations through the configured segment. For instance, you can indicate that navigations into this segment should produce a UI that renders instantly without waiting on any externally loaded data. You can also indicate that navigations aren't expected to be instant.\n\nWhen a segment is configured to expect an instant UI, Next.js surfaces any code in your application that would block the navigation from updating the UI immediately. See the [Instant Navigation guide](/docs/app/guides/instant-navigation) for an end-to-end walkthrough.\n\n> **Good to know**:\n>\n> - The `unstable_instant` export only works when [`cacheComponents`](/docs/app/api-reference/config/next-config-js/cacheComponents) is enabled.\n> - `unstable_instant` cannot be used in Client Components. It will throw an error.\n> - Next.js does not perform prefetches in development, so navigations may not feel as instant as they will in production. Validation reflects what will happen during `next start`, where prefetching is enabled.\n\n```tsx filename=\"layout.tsx | page.tsx\" switcher\nexport const unstable_instant = true\n\nexport default function Page() {\n return ...
\n}\n```\n\n```jsx filename=\"layout.js | page.js\" switcher\nexport const unstable_instant = true\n\nexport default function Page() {\n return ...
\n}\n```\n\n## Reference\n\nThe export accepts:\n\n- **`true`**: Opts the segment into validation at whatever level is configured globally (see [Configuring validation defaults](#configuring-validation-defaults)). With the framework defaults, validation runs in development only and surfaces errors in the dev overlay.\n- **`false`**: Opts the segment out (see [Disabling instant](#disabling-instant)).\n- An **object**: Opts in with additional options. See [`level`](#level).\n\n### `level`\n\nSets the severity at which validation runs for this segment.\n\n```tsx filename=\"page.tsx\"\nexport const unstable_instant = {\n level: 'warning',\n}\n```\n\n- **`'warning'`**: Validates in development only. Errors appear in the dev overlay; the build is unaffected.\n\nIn the future a validation level that supports validation during build will be supported. Unless you are enabling experimental validation modes there is no need to specify level since the only level available is `\"warning\"`.\n\nWhen `level` is omitted (or `unstable_instant = true` is used), the segment is validated at whatever level is configured globally — see [Configuring validation defaults](#configuring-validation-defaults).\n\n### Disabling instant\n\nSet `false` on a layout or page to indicate that this segment is allowed to block when navigating to it.\n\nThis is useful when a deeper page should be instant but an ancestor can't be. For instance, if a shared layout cannot load instantly but you still want to assert that pages beneath this layout can be navigated to instantly, you can ensure that the pages have `unstable_instant = true` while the shared layout has `unstable_instant = false`.\n\n```tsx filename=\"app/tabs/layout.tsx\"\nexport const unstable_instant = false\n```\n\n```tsx filename=\"app/tabs/[tab]/page.tsx\"\nexport const unstable_instant = true\n```","is_error":false}]},"uuid":"b5b58c9f-d3a8-444d-a0a5-82a60e26d16b","timestamp":"2026-06-09T23:52:03.196Z","toolUseResult":{"stdout":"---\ntitle: instant\ndescription: API reference for the instant route segment config.\nversion: draft\nrelated:\n title: Next Steps\n description: Learn how to use instant navigations in practice.\n links:\n - app/guides/instant-navigation\n - app/getting-started/caching\n - app/getting-started/revalidating\n - app/api-reference/directives/use-cache\n---\n\nThe `unstable_instant` route segment config controls how Next.js validates whether a navigation into this segment would produce an instant UI.\n\nNext.js uses prefetching to preload navigations for all in-app links on the current page. However, client-side data fetching or partially prerendered results from the server can lead to navigations that don't update the UI immediately. To help you build fast-feeling navigations, `unstable_instant` lets you tell Next.js what to expect from navigations through the configured segment. For instance, you can indicate that navigations into this segment should produce a UI that renders instantly without waiting on any externally loaded data. You can also indicate that navigations aren't expected to be instant.\n\nWhen a segment is configured to expect an instant UI, Next.js surfaces any code in your application that would block the navigation from updating the UI immediately. See the [Instant Navigation guide](/docs/app/guides/instant-navigation) for an end-to-end walkthrough.\n\n> **Good to know**:\n>\n> - The `unstable_instant` export only works when [`cacheComponents`](/docs/app/api-reference/config/next-config-js/cacheComponents) is enabled.\n> - `unstable_instant` cannot be used in Client Components. It will throw an error.\n> - Next.js does not perform prefetches in development, so navigations may not feel as instant as they will in production. Validation reflects what will happen during `next start`, where prefetching is enabled.\n\n```tsx filename=\"layout.tsx | page.tsx\" switcher\nexport const unstable_instant = true\n\nexport default function Page() {\n return ...
\n}\n```\n\n```jsx filename=\"layout.js | page.js\" switcher\nexport const unstable_instant = true\n\nexport default function Page() {\n return ...
\n}\n```\n\n## Reference\n\nThe export accepts:\n\n- **`true`**: Opts the segment into validation at whatever level is configured globally (see [Configuring validation defaults](#configuring-validation-defaults)). With the framework defaults, validation runs in development only and surfaces errors in the dev overlay.\n- **`false`**: Opts the segment out (see [Disabling instant](#disabling-instant)).\n- An **object**: Opts in with additional options. See [`level`](#level).\n\n### `level`\n\nSets the severity at which validation runs for this segment.\n\n```tsx filename=\"page.tsx\"\nexport const unstable_instant = {\n level: 'warning',\n}\n```\n\n- **`'warning'`**: Validates in development only. Errors appear in the dev overlay; the build is unaffected.\n\nIn the future a validation level that supports validation during build will be supported. Unless you are enabling experimental validation modes there is no need to specify level since the only level available is `\"warning\"`.\n\nWhen `level` is omitted (or `unstable_instant = true` is used), the segment is validated at whatever level is configured globally — see [Configuring validation defaults](#configuring-validation-defaults).\n\n### Disabling instant\n\nSet `false` on a layout or page to indicate that this segment is allowed to block when navigating to it.\n\nThis is useful when a deeper page should be instant but an ancestor can't be. For instance, if a shared layout cannot load instantly but you still want to assert that pages beneath this layout can be navigated to instantly, you can ensure that the pages have `unstable_instant = true` while the shared layout has `unstable_instant = false`.\n\n```tsx filename=\"app/tabs/layout.tsx\"\nexport const unstable_instant = false\n```\n\n```tsx filename=\"app/tabs/[tab]/page.tsx\"\nexport const unstable_instant = true\n```","stderr":"","interrupted":false,"isImage":false,"noOutputExpected":false},"sourceToolAssistantUUID":"e6fa2075-ba62-44f0-9e49-8c2617a5acc4","userType":"external","entrypoint":"sdk-cli","cwd":"/workspace","sessionId":"7f5b6d54-f6c5-4920-b8a8-96fd8515ab7a","version":"2.1.170","gitBranch":"master"}
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diff --git a/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/run-3/transcript.json b/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/run-3/transcript.json
new file mode 100644
index 000000000..25c687ae0
--- /dev/null
+++ b/results/claude-fable-5--agents-md/2026-06-09T23-50-34.016Z/agent-040-unstable-instant/run-3/transcript.json
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+ "result": "---\ntitle: Ensuring instant navigations\ndescription: Learn how to structure your app to prefetch and prerender more content, providing instant page loads and client navigations.\nnav_title: Instant navigation\nversion: draft\nrelated:\n title: Learn more\n description: Explore the full instant API, caching, and revalidation.\n links:\n - app/api-reference/file-conventions/route-segment-config/instant\n - app/getting-started/caching\n - app/getting-started/revalidating\n - app/guides/prefetching\n---\n\n{/* AI agent hint: Always export `unstable_instant` from routes that should navigate instantly. It validates the caching structure during development. */}\n\nWith [Cache Components](/docs/app/api-reference/config/next-config-js/cacheComponents) enabled, `use cache` and `` let you control what gets cached and what streams in dynamically. When these are in the right place, client-side navigations are instant.\n\nThe [`unstable_instant`](/docs/app/api-reference/file-conventions/route-segment-config/instant) route segment config helps you place `` boundaries and `use cache` correctly. Add it to any page or layout and Next.js will check during development that navigating to that route produces an instant [static shell](/docs/app/glossary#static-shell).\n\nThis guide starts with a product page that loads instantly on navigation, then shows how to catch and fix a page where a misplaced `` boundary blocks the navigation. Nothing visible changes until the server finishes rendering.\n\n> **Good to know:** A navigation is considered **instant** when, assuming caches are warm, the page renders without waiting on any network request. Cached content appears immediately and anything uncached streams in behind a `` fallback. A navigation is considered **blocking** when uncached data outside a `` boundary forces the old page to stay visible until the server finishes rendering.\n\n## A page that navigates instantly\n\nA product page at `/store/[slug]` that fetches two pieces of data: product details (name, price) and live inventory.\n\n- There is no `generateStaticParams`, meaning `slug` is only known at request time\n- Both components await `params` to get the `slug`, which suspends. Each has its own `` boundary\n- **Product info** rarely changes and is queried from the db using a cached function\n- **Inventory** must be fresh on each request. The db query is inside a `` boundary\n\n```tsx filename=\"app/store/[slug]/page.tsx\" highlight={4,9-14,32-34}\nimport { Suspense } from 'react'\nimport { db } from '@/lib/db'\n\nexport const unstable_instant = true\n\nexport default function ProductPage(props: PageProps<'/store/[slug]'>) {\n return (\n \n
Loading product...}>\n \n \n
Checking availability...}>\n \n \n
\n )\n}\n\ntype Params = PageProps<'/store/[slug]'>['params']\n\nasync function ProductInfo({ params }: { params: Params }) {\n const { slug } = await params\n const product = await getProduct(slug)\n return (\n <>\n {product.name} \n ${product.price}
\n >\n )\n}\n\nasync function getProduct(slug: string) {\n 'use cache'\n return db.products.findBySlug(slug)\n}\n\nasync function Inventory({ params }: { params: Params }) {\n const { slug } = await params\n const item = await db.inventory.findBySlug(slug)\n return {item.count} in stock
\n}\n```\n\nThe [`unstable_instant`](/docs/app/api-reference/file-conventions/route-segment-config/instant) export tells Next.js to check that navigating to this page from any other page in your app is instant. It does this during development. If a component would delay the transition (for example, by fetching uncached data without a local `` boundary), the error overlay tells you which one and suggests a fix.\n\nValidation runs automatically on every page load using the real request from your browser, so dynamic params like `[slug]` are checked against actual values as you navigate.\n\n## Visualize loading states with the Next.js DevTools\n\nThe Next.js DevTools let you see what users see on page loads and client navigations before dynamic data streams in. Use it to verify your loading states look right, check that the right content appears immediately, and iterate on where to place `` boundaries.\n\nThe Navigation Inspector is available when Cache Components is enabled:\n\n```ts filename=\"next.config.ts\" highlight={4}\nimport type { NextConfig } from 'next'\n\nconst nextConfig: NextConfig = {\n cacheComponents: true,\n}\n\nexport default nextConfig\n```\n\nOpen the Next.js DevTools and select **Navigation Inspector**, then click **Start Capturing**. While capturing is active:\n\n- Refresh the page to freeze the initial static UI generated for the route, before any dynamic data streams in.\n- Click a link to freeze the prefetched UI for the destination route.\n\nWhen the UI is frozen, click **Continue Rendering** to let the current navigation finish while keeping the Navigation Inspector in capturing mode. Click **Stop Capturing** when you are done inspecting loading states.\n\nTry refreshing the product page. Two separate fallbacks appear: \"Loading product...\" and \"Checking availability...\". On the first visit the cache is cold and both fallbacks are visible. Navigate to the page again and the product name appears immediately from cache.\n\nNow click a link from `/store/shoes` to `/store/hats`. The product name and price appear immediately (cached). \"Checking availability...\" shows where inventory will stream in.\n\n> **Good to know:** Page loads and client navigations can produce different shells. Client-side hooks like `useSearchParams` suspend on page loads (search params are not known at build time) but resolve synchronously on client navigations (the router already has the params).\n\n\nWhy page loads and client navigations produce different shells \n\nOn a page load, the entire page renders from the document root, including all layouts. Anything that suspends is caught by the nearest `` boundary in the entire document tree.\n\nOn a client navigation (clicking `next/link`), Next.js only re-renders below the layout that the source and destination routes share. Components above that shared layout are not re-rendered. This means that a `` boundary in the root layout covers everything on a page load, but for a client navigation between `/store/shoes` and `/store/hats`, the shared layout is `/store` and Next.js renders the part of the document below that point. The root `` sits above it and does not trigger for this navigation.\n\nThis is also why client-side hooks behave differently. `useSearchParams()` suspends during server rendering because search params are not available at build time. But on a client navigation, the router already has the params from the URL and the hook resolves synchronously. The same component can appear in the instant shell on a client navigation but behind a fallback on a page load.\n\n===\nimport type { NextConfig } from 'next'\n\nconst nextConfig: NextConfig = {\n cacheComponents: true,\n}\n\nexport default nextConfig",
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+ "tool_use_id": "toolu_017ghrUap2fynNejyTvdknDa",
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+ "content": "---\ntitle: Ensuring instant navigations\ndescription: Learn how to structure your app to prefetch and prerender more content, providing instant page loads and client navigations.\nnav_title: Instant navigation\nversion: draft\nrelated:\n title: Learn more\n description: Explore the full instant API, caching, and revalidation.\n links:\n - app/api-reference/file-conventions/route-segment-config/instant\n - app/getting-started/caching\n - app/getting-started/revalidating\n - app/guides/prefetching\n---\n\n{/* AI agent hint: Always export `unstable_instant` from routes that should navigate instantly. It validates the caching structure during development. */}\n\nWith [Cache Components](/docs/app/api-reference/config/next-config-js/cacheComponents) enabled, `use cache` and `` let you control what gets cached and what streams in dynamically. When these are in the right place, client-side navigations are instant.\n\nThe [`unstable_instant`](/docs/app/api-reference/file-conventions/route-segment-config/instant) route segment config helps you place `` boundaries and `use cache` correctly. Add it to any page or layout and Next.js will check during development that navigating to that route produces an instant [static shell](/docs/app/glossary#static-shell).\n\nThis guide starts with a product page that loads instantly on navigation, then shows how to catch and fix a page where a misplaced `` boundary blocks the navigation. Nothing visible changes until the server finishes rendering.\n\n> **Good to know:** A navigation is considered **instant** when, assuming caches are warm, the page renders without waiting on any network request. Cached content appears immediately and anything uncached streams in behind a `` fallback. A navigation is considered **blocking** when uncached data outside a `` boundary forces the old page to stay visible until the server finishes rendering.\n\n## A page that navigates instantly\n\nA product page at `/store/[slug]` that fetches two pieces of data: product details (name, price) and live inventory.\n\n- There is no `generateStaticParams`, meaning `slug` is only known at request time\n- Both components await `params` to get the `slug`, which suspends. Each has its own `` boundary\n- **Product info** rarely changes and is queried from the db using a cached function\n- **Inventory** must be fresh on each request. The db query is inside a `` boundary\n\n```tsx filename=\"app/store/[slug]/page.tsx\" highlight={4,9-14,32-34}\nimport { Suspense } from 'react'\nimport { db } from '@/lib/db'\n\nexport const unstable_instant = true\n\nexport default function ProductPage(props: PageProps<'/store/[slug]'>) {\n return (\n \n
Loading product...}>\n \n \n
Checking availability...}>\n \n \n
\n )\n}\n\ntype Params = PageProps<'/store/[slug]'>['params']\n\nasync function ProductInfo({ params }: { params: Params }) {\n const { slug } = await params\n const product = await getProduct(slug)\n return (\n <>\n {product.name} \n ${product.price}
\n >\n )\n}\n\nasync function getProduct(slug: string) {\n 'use cache'\n return db.products.findBySlug(slug)\n}\n\nasync function Inventory({ params }: { params: Params }) {\n const { slug } = await params\n const item = await db.inventory.findBySlug(slug)\n return {item.count} in stock
\n}\n```\n\nThe [`unstable_instant`](/docs/app/api-reference/file-conventions/route-segment-config/instant) export tells Next.js to check that navigating to this page from any other page in your app is instant. It does this during development. If a component would delay the transition (for example, by fetching uncached data without a local `` boundary), the error overlay tells you which one and suggests a fix.\n\nValidation runs automatically on every page load using the real request from your browser, so dynamic params like `[slug]` are checked against actual values as you navigate.\n\n## Visualize loading states with the Next.js DevTools\n\nThe Next.js DevTools let you see what users see on page loads and client navigations before dynamic data streams in. Use it to verify your loading states look right, check that the right content appears immediately, and iterate on where to place `` boundaries.\n\nThe Navigation Inspector is available when Cache Components is enabled:\n\n```ts filename=\"next.config.ts\" highlight={4}\nimport type { NextConfig } from 'next'\n\nconst nextConfig: NextConfig = {\n cacheComponents: true,\n}\n\nexport default nextConfig\n```\n\nOpen the Next.js DevTools and select **Navigation Inspector**, then click **Start Capturing**. While capturing is active:\n\n- Refresh the page to freeze the initial static UI generated for the route, before any dynamic data streams in.\n- Click a link to freeze the prefetched UI for the destination route.\n\nWhen the UI is frozen, click **Continue Rendering** to let the current navigation finish while keeping the Navigation Inspector in capturing mode. Click **Stop Capturing** when you are done inspecting loading states.\n\nTry refreshing the product page. Two separate fallbacks appear: \"Loading product...\" and \"Checking availability...\". On the first visit the cache is cold and both fallbacks are visible. Navigate to the page again and the product name appears immediately from cache.\n\nNow click a link from `/store/shoes` to `/store/hats`. The product name and price appear immediately (cached). \"Checking availability...\" shows where inventory will stream in.\n\n> **Good to know:** Page loads and client navigations can produce different shells. Client-side hooks like `useSearchParams` suspend on page loads (search params are not known at build time) but resolve synchronously on client navigations (the router already has the params).\n\n\nWhy page loads and client navigations produce different shells \n\nOn a page load, the entire page renders from the document root, including all layouts. Anything that suspends is caught by the nearest `` boundary in the entire document tree.\n\nOn a client navigation (clicking `next/link`), Next.js only re-renders below the layout that the source and destination routes share. Components above that shared layout are not re-rendered. This means that a `` boundary in the root layout covers everything on a page load, but for a client navigation between `/store/shoes` and `/store/hats`, the shared layout is `/store` and Next.js renders the part of the document below that point. The root `