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fix(eve): cancel parent after descendant limit stop - #1273

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rui/input-request-kindfrom
rui/session-limit-cancellation
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fix(eve): cancel parent after descendant limit stop#1273
ruiconti wants to merge 6 commits into
rui/input-request-kindfrom
rui/session-limit-cancellation

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@ruiconti

@ruiconti ruiconti commented Jul 28, 2026

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A Stop answer to a descendant's session-token-limit prompt was delivered to the child only; the parent kept waiting on a child that would never respond, and the session hung without accepting messages.

What

  • Store the descendant continuation token and request kind for each proxied request. Persisted proxy metadata is validated without pulling zod into the runtime bundle.
  • When a proxied session-limit response selects Stop, forward it to the child and return cancel-turn to the parent. The parent cancels its descendants, emits turn.cancelled, and parks at session.waiting, so the root session accepts the next message.

E2E

descendant-session-limit.eval.ts: descendant Continue and Stop. The Stop path asserts no failure or completion event and that the same root session stays usable.

Stack

Based on #1319 (the InputRequest.kind discriminator this routing reads), which is based on #1262. #1312 layers on this.

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Bundle + Package Summary: apps/fixtures/weather-agent

Key takeaways

  • No notable deltas vs rui/input-request-kind (45607c0).

Delta vs rui/input-request-kind (45607c0)

Area Metric Baseline Current Delta
Package Packed tarball 7.61 MB 7.61 MB +1.5 kB ⚠️
Package Unpacked publish size 28.75 MB 28.75 MB +2.1 kB ⚠️
Package Installed footprint 89.37 MB 89.37 MB +2.1 kB ⚠️
Package Published files 2859 2859 0
Package Installed files 6434 6434 0
Runtime Unique function payloads 2 2 0
Runtime Total function bytes 16.73 MB 16.74 MB +8.4 kB ⚠️
Runtime Public routes 11 11 0
Changed function payloads vs rui/input-request-kind (45607c0) (2)
Function Status Baseline Current Delta Route changes
functions/__server.func changed 8.36 MB 8.37 MB +4.2 kB ⚠️ none
functions/.well-known/workflow/v1/flow.func changed 8.36 MB 8.37 MB +4.2 kB ⚠️ none

eve init install

Metric Baseline Current Delta
Installed footprint 127.77 MB 127.78 MB +2.1 kB ⚠️
Installed packages 130 130 0
dependencies 4 4 0
devDependencies 2 2 0
Dependency package bytes 43.06 MB 43.07 MB +2.1 kB ⚠️
devDependency package bytes 5.04 MB 5.04 MB 0 B ➖
Build Metadata
  • Preset: vercel
  • Nitro: nitro@3.0.260610-beta
  • Output directory: apps/fixtures/weather-agent/.vercel/output
  • Build metadata timestamp: 2026-07-29T15:01:10.965Z
  • Route aliases: 11 public, 1 internal (12 total aliases)
  • Vercel routes in config: 14
  • Severity legend: 🔴 dominant/large, 🟠 notable, 🟡 watch, ⚪ small
Package Drill-Down

Package Details

  • Package: eve@0.27.12
  • Package directory: packages/eve
  • Tarball: 7.61 MB (eve-0.27.12.tgz)
  • Unpacked payload: 28.75 MB across 2859 published files
  • Installed footprint: 89.37 MB across 6434 installed files
  • Installed root package: 27.39 MB
  • Installed dependencies: 61.98 MB
  • Runtime dependencies: 2
  • Peer dependencies: 5 (4 optional)

Installed footprint is measured from an isolated temporary npm install of the packed tarball.

Heavy installed dependencies

  • eve: 27.39 MB (30.6%)
  • @rolldown/binding-linux-x64-gnu: 19.28 MB (21.6%)
  • @rolldown/binding-wasm32-wasi: 10.66 MB (11.9%)
  • ai: 6.52 MB (7.3%)
  • @napi-rs/wasm-runtime: 6.39 MB (7.2%)
Publish payload breakdown
Published file size
🔴 dist/src/compiled/shadcn-registry/index.js       [########################] 13.15 MB 45.7%
🟠 dist/src/compiled/experimental-ai-sdk-code-mo... [###.....................] 1.51 MB 5.2%
🟡 dist/src/compiled/@vercel/sandbox/index.js       [#.......................] 632.5 kB 2.2%
🟡 dist/src/compiled/_chunks/workflow/undici-DWL... [#.......................] 502.4 kB 1.7%
🟡 dist/src/compiled/@chat-adapter/slack/index.js   [#.......................] 440.5 kB 1.5%
🔴 Other published files                            [#######################.] 12.52 MB 43.5%
Installed footprint breakdown
Installed package size
🔴 eve                             [########################] 27.39 MB 30.6%
🔴 @rolldown/binding-linux-x64-gnu [#################.......] 19.28 MB 21.6%
🔴 @rolldown/binding-wasm32-wasi   [#########...............] 10.66 MB 11.9%
🔴 ai                              [######..................] 6.52 MB 7.3%
🔴 @napi-rs/wasm-runtime           [######..................] 6.39 MB 7.2%
🔴 zod                             [####....................] 5.07 MB 5.7%
🔴 Other installed packages        [############............] 14.07 MB 15.7%
Runtime dependencies (2)
Package Range Notes
nitro 3.0.260610-beta
undici 8.9.0
Peer dependencies (5)
Package Range Notes
@opentelemetry/api ^1.0.0 optional peer
ai catalog:
braintrust ^3.0.0 optional peer
just-bash ^3.0.0 optional peer
microsandbox ^0.5.0 optional peer
eve init install drill-down

eve init install details

  • Command: eve init my-agent
  • Package manager: npm
  • Installed footprint: 127.78 MB across 8302 installed files
  • Installed packages: 130 total (124 transitive-only)
  • dependencies: 4 direct packages totaling 43.07 MB
  • devDependencies: 2 direct packages totaling 5.04 MB
  • Other transitive package files: 79.67 MB

Installed footprint is measured from an isolated temporary eve init my-agent using the current packed eve tarball.

Heavy installed dependencies

  • @typescript/typescript-linux-x64: 27.95 MB (21.9%)
  • eve: 27.39 MB (21.4%)
  • @rolldown/binding-linux-x64-gnu: 19.28 MB (15.1%)
  • @rolldown/binding-wasm32-wasi: 10.66 MB (8.3%)
  • zod: 9.02 MB (7.1%)
Installed footprint breakdown
Installed package size
🔴 @typescript/typescript-linux-x64 [########################] 27.95 MB 21.9%
🔴 eve                              [########################] 27.39 MB 21.4%
🔴 @rolldown/binding-linux-x64-gnu  [#################.......] 19.28 MB 15.1%
🔴 @rolldown/binding-wasm32-wasi    [#########...............] 10.66 MB 8.3%
🔴 zod                              [########................] 9.02 MB 7.1%
🔴 ai                               [######..................] 6.52 MB 5.1%
🔴 @napi-rs/wasm-runtime            [#####...................] 6.39 MB 5.0%
🔴 Other installed packages         [##################......] 20.57 MB 16.1%
dependencies (4)
Package Range Installed size Share
@vercel/connect 0.4.2 135.8 kB 0.1%
ai ^7.0.38 6.52 MB 5.1%
eve file:eve-0.27.12.tgz 27.39 MB 21.4%
zod 4.4.3 9.02 MB 7.1%
devDependencies (2)
Package Range Installed size Share
@types/node 24.x 2.54 MB 2.0%
typescript 7.0.2 2.50 MB 2.0%
Function Drill-Down

Payload Size Graph

Unique function payload size and share of total
🔴 functions/.well-known/workflow/v1/flow.func     [########################] 8.37 MB 50.0%
🔴 functions/__server.func                         [########################] 8.37 MB 50.0%

Top Function Payloads

🟠 functions/.well-known/workflow/v1/flow.func • 1 public route • 8.37 MB
Metric Value
Public routes /.well-known/workflow/v1/flow
Runtime nodejs24.x
Handler index.mjs
Payload 8.37 MB
Function files 8.37 MB across 44 files
Traced dependencies 0 B
Signal 🟠 Bundled file index.mjs is 2.27 MB (27.1%)

🟠 🔎 Dependency Analysis

📦 Bundled files:

Bundled file size
🟠 index.mjs                       [#######################.] 2.27 MB 27.1%
🟠 _chunks/runtime-artifacts.mjs   [################........] 1.59 MB 19.0%
🟡 _libs/undici.mjs                [##########..............] 980.5 kB 11.7%
🟡 _chunks/sandbox.mjs             [########................] 768.8 kB 9.2%
🟡 _libs/@ai-sdk/gateway+[...].mjs [####....................] 432.8 kB 5.2%
🟠 Other bundled files             [########################] 2.33 MB 27.8%

🧾 Vercel Config

{
  "handler": "index.mjs",
  "launcherType": "Nodejs",
  "shouldAddHelpers": false,
  "supportsResponseStreaming": true,
  "runtime": "nodejs24.x",
  "maxDuration": "max",
  "experimentalTriggers": [
    {
      "type": "queue/v2beta",
      "topic": "__eve776561746865722d6167656e74_wkf_workflow_*",
      "consumer": "default",
      "retryAfterSeconds": 5,
      "initialDelaySeconds": 0
    }
  ],
  "environment": {
    "WORKFLOW_PRECONDITION_GUARD": "1"
  }
}

🟠 functions/__server.func • 10 public routes, 1 internal alias • 8.37 MB
Metric Value
Public routes /
/eve/v1/callback/[token]
/eve/v1/connections/[name]/callback/[token]
/eve/v1/health
/eve/v1/info
/eve/v1/session
/eve/v1/session/[sessionId]
/eve/v1/session/[sessionId]/cancel
/eve/v1/session/[sessionId]/stream
/eve/v1/session/reset
Internal aliases /__server
Runtime nodejs24.x
Handler index.mjs
Payload 8.37 MB
Function files 8.37 MB across 44 files
Traced dependencies 0 B
Signal 🟠 Bundled file index.mjs is 2.27 MB (27.1%)

🟠 🔎 Dependency Analysis

📦 Bundled files:

Bundled file size
🟠 index.mjs                       [#######################.] 2.27 MB 27.1%
🟠 _chunks/runtime-artifacts.mjs   [################........] 1.59 MB 19.0%
🟡 _libs/undici.mjs                [##########..............] 980.5 kB 11.7%
🟡 _chunks/sandbox.mjs             [########................] 768.8 kB 9.2%
🟡 _libs/@ai-sdk/gateway+[...].mjs [####....................] 432.8 kB 5.2%
🟠 Other bundled files             [########################] 2.32 MB 27.8%

🧾 Vercel Config

{
  "handler": "index.mjs",
  "launcherType": "Nodejs",
  "shouldAddHelpers": false,
  "supportsResponseStreaming": true,
  "runtime": "nodejs24.x"
}

Build Timing: e2e/fixtures/agent-tools-sandbox

This is an informational timing measurement inside eve build, from preflight through publication. Output-size measurement and profile writing are excluded.

Build mode: deployable Vercel build with sandbox template prewarm included.

  • Build pipeline: 2.03 s -> 2.02 s (-6.9 ms) vs rui/input-request-kind (45607c0).
  • Timing is informational: shared GitHub runners are too variable for a hard timing budget.
Detailed phase timings vs `rui/input-request-kind (45607c0)`
Phase Baseline Current Delta
extension.check 1.1 ms 1.1 ms 0.0 ms
project.resolve 0.6 ms 0.6 ms 0.0 ms
workspace.create 0.7 ms 0.7 ms 0.0 ms
host.prepare 296.4 ms 225.0 ms -71.4 ms
vercel.service-prefix.resolve 2.0 ms 1.8 ms -0.2 ms
nitro.create 198.5 ms 197.6 ms -0.9 ms
sandbox.prewarm 313.2 ms 335.1 ms +21.9 ms
nitro.cache.prepare 0.3 ms 0.3 ms 0.0 ms
nitro.prepare 0.7 ms 0.8 ms +0.1 ms
nitro.public-assets 0.8 ms 0.7 ms -0.1 ms
nitro.prerender 0.4 ms 0.4 ms 0.0 ms
nitro.bundle 1.19 s 1.23 s +43.2 ms
nitro.cache.write 0.3 ms 0.3 ms 0.0 ms
vercel.workflow-function.materialize 19.0 ms 19.3 ms +0.3 ms
agent-summary.emit 0.5 ms 0.5 ms 0.0 ms
nitro.close 0.1 ms 0.1 ms 0.0 ms
output.publish 3.2 ms 3.2 ms 0.0 ms
workspace.remove 1.9 ms 1.9 ms 0.0 ms

Comment thread packages/eve/src/execution/turn-workflow.ts Outdated
@ruiconti
ruiconti force-pushed the rui/session-limit-cancellation branch 2 times, most recently from e2b6a33 to 725dfc3 Compare July 28, 2026 23:00
@ruiconti ruiconti changed the title fix(eve): complete sessions after token limit declines fix(eve): cancel parent turn after descendant limit stop Jul 28, 2026
@ruiconti
ruiconti force-pushed the rui/session-limit-cancellation branch from 725dfc3 to 1639ea1 Compare July 28, 2026 23:24
@ruiconti ruiconti changed the title fix(eve): cancel parent turn after descendant limit stop refactor(eve): validate proxy input requests with zod Jul 28, 2026
@ruiconti ruiconti changed the title refactor(eve): validate proxy input requests with zod refactor(eve): make proxy input request parsing exhaustive Jul 29, 2026
@ruiconti
ruiconti force-pushed the rui/session-limit-cancellation branch from c7dae9d to 96593d1 Compare July 29, 2026 02:51
@ruiconti ruiconti changed the title refactor(eve): make proxy input request parsing exhaustive fix(eve): cancel parent after descendant limit stop Jul 29, 2026
@ruiconti
ruiconti force-pushed the rui/session-limit-cancellation branch from a2bc21e to 6efbbb3 Compare July 29, 2026 03:13
ruiconti added 6 commits July 29, 2026 10:29
Add a one-token child whose tool call forces the next model step to park on a session-limit prompt. Exercise both continuation routing back to the child and decline recovery on the reusable root session.

Signed-off-by: Rui Conti <ruiconti@gmail.com>
Signed-off-by: Rui Conti <ruiconti@gmail.com>
Route a descendant session-limit Stop response to its child before the
parent owns cancellation and cascades it. This removes the synchronous
parent-child wait cycle that left the run parked with unanswered
requests. Proxied request metadata stores the descendant continuation
token and request kind so routing decisions use protocol data.

Signed-off-by: Rui Conti <ruiconti@gmail.com>
Signed-off-by: Rui Conti <ruiconti@gmail.com>
Signed-off-by: Rui Conti <ruiconti@gmail.com>
Assert the declined delegation remains pending in parent-derived facts because cancellation intentionally emits no subagent.completed event. The surrounding gates still prove that Stop cancels the turn and leaves the root session reusable.

Signed-off-by: Rui Conti <ruiconti@gmail.com>
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