diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5f7f20f09d2..8a305c2fbf3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -54,6 +54,7 @@ Docs: https://docs.openclaw.ai
 - CI/tooling: route script edits through conventional owner tests when matching `test/scripts` or `src/scripts` coverage already exists.
 - CI/tooling: honor option terminators in the memory FD repro script so follow-on arguments are not reparsed.
 - Release/CI/E2E: honor option terminators across release, Parallels smoke, plugin gauntlet, and extension-memory scripts.
+- Performance: skip declaration bundling for runtime-only CLI startup and gateway watch build profiles.
 - Performance: reuse prepared provider handles, strict tool schemas, gateway runtime metadata, session maintenance config, plugin metadata, bundled skill allowlists, package-local plugin artifacts, and single-entry store writes.
 
 ## 2026.5.28
diff --git a/scripts/build-all.mjs b/scripts/build-all.mjs
index d41385b61e1..aa1e04edaa0 100644
--- a/scripts/build-all.mjs
+++ b/scripts/build-all.mjs
@@ -176,11 +176,17 @@ export const BUILD_ALL_PROFILE_STEP_ENV = {
     },
   },
   gatewayWatch: {
+    tsdown: {
+      OPENCLAW_RUN_NODE_SKIP_DTS_BUILD: "1",
+    },
     "runtime-postbuild": {
       OPENCLAW_RUNTIME_POSTBUILD_STATIC_ASSETS: "0",
     },
   },
   cliStartup: {
+    tsdown: {
+      OPENCLAW_RUN_NODE_SKIP_DTS_BUILD: "1",
+    },
     "runtime-postbuild": {
       OPENCLAW_RUNTIME_POSTBUILD_STATIC_ASSETS: "0",
     },
diff --git a/test/scripts/build-all.test.ts b/test/scripts/build-all.test.ts
index b63e9f7a0ba..5097d148f2e 100644
--- a/test/scripts/build-all.test.ts
+++ b/test/scripts/build-all.test.ts
@@ -239,20 +239,22 @@ describe("resolveBuildAllSteps", () => {
     ]);
   });
 
-  it("skips bundled tsdown declarations for CI artifacts", () => {
-    const tsdown = resolveBuildAllSteps("ciArtifacts").find((step) => step.label === "tsdown");
-    if (!tsdown) {
-      throw new Error("Missing ciArtifacts tsdown step");
-    }
+  it("skips bundled tsdown declarations for runtime-only profiles", () => {
+    for (const profile of ["ciArtifacts", "gatewayWatch", "cliStartup"]) {
+      const tsdown = resolveBuildAllSteps(profile).find((step) => step.label === "tsdown");
+      if (!tsdown) {
+        throw new Error(`Missing ${profile} tsdown step`);
+      }
 
-    expect(BUILD_ALL_PROFILE_STEP_ENV.ciArtifacts.tsdown).toEqual({
-      OPENCLAW_RUN_NODE_SKIP_DTS_BUILD: "1",
-    });
-    expect(
-      resolveBuildAllStep(tsdown, { env: { OPENCLAW_RUN_NODE_SKIP_DTS_BUILD: "0" } }).options.env,
-    ).toMatchObject({
-      OPENCLAW_RUN_NODE_SKIP_DTS_BUILD: "1",
-    });
+      expect(BUILD_ALL_PROFILE_STEP_ENV[profile].tsdown).toEqual({
+        OPENCLAW_RUN_NODE_SKIP_DTS_BUILD: "1",
+      });
+      expect(
+        resolveBuildAllStep(tsdown, { env: { OPENCLAW_RUN_NODE_SKIP_DTS_BUILD: "0" } }).options.env,
+      ).toMatchObject({
+        OPENCLAW_RUN_NODE_SKIP_DTS_BUILD: "1",
+      });
+    }
   });
 
   it("uses a minimal built runtime profile for gateway watch regression", () => {