diff --git a/AGENTS.md b/AGENTS.md
index 127164d..e8c9f11 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -70,13 +70,9 @@ DART, KRX, 네이버 뉴스  →  normalized_data_bundle  →  analysis_result
 - 사용자에게 보이는 agent 답변/오류 문구는 1인칭 `공시리` 톤을 유지한다.
 
 ```bash
-# agent pane A: build watch (repo root에서 .env 로드 후 실행)
+# agent: 1-pane dev (tsc watch + node --watch, src 변경 시 자동 재기동)
 set -a; source .env; set +a
-cd agent && npm run build -- --watch --preserveWatchOutput
-
-# agent pane B: server watch
-set -a; source .env; set +a
-cd agent && node --watch dist/server.js
+cd agent && npm run dev
 # health: curl http://127.0.0.1:8787/health
 
 # backend: 반드시 repo root에서 실행 (backend.main import 경로 유지)
@@ -139,9 +135,9 @@ make status   # health 체크
 # Pi runtime typecheck
 cd agent && npm run typecheck
 
-# Agent server (after `npm run build -- --watch` in another pane)
+# Agent dev (1-pane: tsc watch + node --watch 자동 재기동)
 # (pnpm-workspace.yaml의 onlyBuiltDependencies 확정 이후 `pnpm approve-builds` 불필요)
-cd agent && node --watch dist/server.js
+cd agent && npm run dev
 
 # Backend dev (repo root)
 uv run --project backend uvicorn backend.main:app --reload --host 127.0.0.1 --port 8000
diff --git a/agent/package.json b/agent/package.json
index c7ac819..339a454 100644
--- a/agent/package.json
+++ b/agent/package.json
@@ -15,7 +15,8 @@
     "start": "node dist/server.js",
     "trigger": "npm run build && node dist/cli/runDisclosureTrigger.js",
     "serve": "npm run build && node dist/server.js",
-    "dev:serve": "npm run build && node dist/server.js"
+    "dev:serve": "npm run build && node dist/server.js",
+    "dev": "tsc -p tsconfig.json && (tsc -p tsconfig.json --watch --preserveWatchOutput & node --watch dist/server.js)"
   },
   "devDependencies": {
     "typescript": "^5.9.3"