diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 885d87fcb1..a42a965c8a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -91,7 +91,7 @@ jobs:
             command: pnpm canvas:a2ui:bundle && bunx vitest run
           - runtime: bun
             task: build
-            command: bunx tsc -p tsconfig.json
+            command: bunx tsdown
     steps:
       - name: Checkout
         uses: actions/checkout@v4
diff --git a/AGENTS.md b/AGENTS.md
index aa3b84b1b1..405858d2b9 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -44,7 +44,7 @@
 - Run CLI in dev: `pnpm openclaw ...` (bun) or `pnpm dev`.
 - Node remains supported for running built output (`dist/*`) and production installs.
 - Mac packaging (dev): `scripts/package-mac-app.sh` defaults to current arch. Release checklist: `docs/platforms/mac/release.md`.
-- Type-check/build: `pnpm build` (tsc)
+- Type-check/build: `pnpm build`
 - Lint/format: `pnpm lint` (oxlint), `pnpm format` (oxfmt)
 - Tests: `pnpm test` (vitest); coverage: `pnpm test:coverage`
 
diff --git a/package.json b/package.json
index d7d579c7f5..318e10d96e 100644
--- a/package.json
+++ b/package.json
@@ -238,7 +238,6 @@
     "signal-utils": "^0.21.1",
     "tsdown": "^0.20.1",
     "tsx": "^4.21.0",
-    "typescript": "^5.9.3",
     "vitest": "^4.0.18",
     "wireit": "^0.14.12"
   },
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 967eafebdd..654a62956e 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -254,9 +254,6 @@ importers:
       tsx:
         specifier: ^4.21.0
         version: 4.21.0
-      typescript:
-        specifier: ^5.9.3
-        version: 5.9.3
       vitest:
         specifier: ^4.0.18
         version: 4.0.18(@opentelemetry/api@1.9.0)(@types/node@25.1.0)(@vitest/browser-playwright@4.0.18)(jiti@2.6.1)(lightningcss@1.30.2)(tsx@4.21.0)(yaml@2.8.2)
@@ -513,9 +510,6 @@ importers:
       playwright:
         specifier: ^1.58.1
         version: 1.58.1
-      typescript:
-        specifier: ^5.9.3
-        version: 5.9.3
       vitest:
         specifier: 4.0.18
         version: 4.0.18(@opentelemetry/api@1.9.0)(@types/node@25.1.0)(@vitest/browser-playwright@4.0.18)(jiti@2.6.1)(lightningcss@1.30.2)(tsx@4.21.0)(yaml@2.8.2)
@@ -11851,7 +11845,8 @@ snapshots:
 
   typed-query-selector@2.12.0: {}
 
-  typescript@5.9.3: {}
+  typescript@5.9.3:
+    optional: true
 
   typical@4.0.0: {}
 
diff --git a/scripts/package-mac-app.sh b/scripts/package-mac-app.sh
index 78392034c8..7f6e904e12 100755
--- a/scripts/package-mac-app.sh
+++ b/scripts/package-mac-app.sh
@@ -110,8 +110,8 @@ merge_framework_machos() {
 echo "📦 Ensuring deps (pnpm install)"
 (cd "$ROOT_DIR" && pnpm install --no-frozen-lockfile --config.node-linker=hoisted)
 if [[ "${SKIP_TSC:-0}" != "1" ]]; then
-  echo "📦 Building JS (pnpm exec tsc)"
-  (cd "$ROOT_DIR" && pnpm exec tsc -p tsconfig.json)
+  echo "📦 Building JS (pnpm tsdown)"
+  (cd "$ROOT_DIR" && pnpm tsdown)
 else
   echo "📦 Skipping TS build (SKIP_TSC=1)"
 fi
diff --git a/scripts/restart-mac.sh b/scripts/restart-mac.sh
index ed02825e11..0db3fad39b 100755
--- a/scripts/restart-mac.sh
+++ b/scripts/restart-mac.sh
@@ -25,7 +25,7 @@ ATTACH_ONLY=1
 log()  { printf '%s\n' "$*"; }
 fail() { printf 'ERROR: %s\n' "$*" >&2; exit 1; }
 
-# Ensure local node binaries (rolldown, tsc, pnpm) are discoverable for the steps below.
+# Ensure local node binaries (rolldown, pnpm) are discoverable for the steps below.
 export PATH="${ROOT_DIR}/node_modules/.bin:${PATH}"
 
 run_step() {
diff --git a/ui/package.json b/ui/package.json
index 90f0b2a507..2f89bac36e 100644
--- a/ui/package.json
+++ b/ui/package.json
@@ -18,7 +18,6 @@
   "devDependencies": {
     "@vitest/browser-playwright": "4.0.18",
     "playwright": "^1.58.1",
-    "typescript": "^5.9.3",
     "vitest": "4.0.18"
   }
 }