diff --git a/package.json b/package.json
index 3177e357935..c2c4464e846 100644
--- a/package.json
+++ b/package.json
@@ -30,7 +30,6 @@
     "!dist/**/*.map",
     "!dist/plugin-sdk/.tsbuildinfo",
     "!dist/extensions/qa-channel/**",
-    "dist/extensions/qa-channel/runtime-api.js",
     "!dist/extensions/qa-lab/**",
     "!dist/extensions/qa-matrix/**",
     "docs/",
diff --git a/scripts/build-all.mjs b/scripts/build-all.mjs
index 343fb7a3c8d..34ce0b76db7 100644
--- a/scripts/build-all.mjs
+++ b/scripts/build-all.mjs
@@ -10,11 +10,6 @@ export const BUILD_ALL_STEPS = [
   { label: "canvas:a2ui:bundle", kind: "pnpm", pnpmArgs: ["canvas:a2ui:bundle"] },
   { label: "tsdown", kind: "node", args: ["scripts/tsdown-build.mjs"] },
   { label: "runtime-postbuild", kind: "node", args: ["scripts/runtime-postbuild.mjs"] },
-  {
-    label: "write-npm-update-compat-sidecars",
-    kind: "node",
-    args: ["scripts/write-npm-update-compat-sidecars.mjs"],
-  },
   { label: "build-stamp", kind: "node", args: ["scripts/build-stamp.mjs"] },
   {
     label: "build:plugin-sdk:dts",
diff --git a/scripts/lib/npm-update-compat-sidecars.mjs b/scripts/lib/npm-update-compat-sidecars.mjs
deleted file mode 100644
index 66211821b77..00000000000
--- a/scripts/lib/npm-update-compat-sidecars.mjs
+++ /dev/null
@@ -1,11 +0,0 @@
-export const NPM_UPDATE_COMPAT_SIDECARS = [
-  {
-    path: "dist/extensions/qa-channel/runtime-api.js",
-    content:
-      "// Compatibility stub for older OpenClaw updaters. The QA channel implementation is not packaged.\nexport {};\n",
-  },
-];
-
-export const NPM_UPDATE_COMPAT_SIDECAR_PATHS = new Set(
-  NPM_UPDATE_COMPAT_SIDECARS.map((entry) => entry.path),
-);
diff --git a/scripts/openclaw-npm-postpublish-verify.ts b/scripts/openclaw-npm-postpublish-verify.ts
index 7725319d51b..197d2e00abe 100644
--- a/scripts/openclaw-npm-postpublish-verify.ts
+++ b/scripts/openclaw-npm-postpublish-verify.ts
@@ -20,7 +20,6 @@ import {
   collectRootDistBundledRuntimeMirrors,
   collectRuntimeDependencySpecs,
 } from "./lib/bundled-plugin-root-runtime-mirrors.mjs";
-import { NPM_UPDATE_COMPAT_SIDECAR_PATHS } from "./lib/npm-update-compat-sidecars.mjs";
 import { runInstalledWorkspaceBootstrapSmoke } from "./lib/workspace-bootstrap-smoke.mjs";
 import { parseReleaseVersion, resolveNpmCommandInvocation } from "./openclaw-npm-release-check.ts";
 
@@ -44,13 +43,6 @@ type InstalledBundledExtensionManifestRecord = {
 const MAX_BUNDLED_EXTENSION_MANIFEST_BYTES = 1024 * 1024;
 const LEGACY_CONTEXT_ENGINE_UNRESOLVED_RUNTIME_MARKER =
   "Failed to load legacy context engine runtime.";
-const NPM_UPDATE_COMPAT_EXTENSION_DIRS = new Set(
-  [...NPM_UPDATE_COMPAT_SIDECAR_PATHS].map((relativePath) => {
-    const pathParts = relativePath.split("/");
-    pathParts.pop();
-    return pathParts.join("/");
-  }),
-);
 
 export type PublishedInstallScenario = {
   name: string;
@@ -183,20 +175,6 @@ function collectExpectedBundledExtensionPackageIds(
   return ids;
 }
 
-function isNpmUpdateCompatOnlyExtensionDir(params: {
-  extensionId: string;
-  packageRoot: string;
-}): boolean {
-  const relativeExtensionDir = `dist/extensions/${params.extensionId}`;
-  if (!NPM_UPDATE_COMPAT_EXTENSION_DIRS.has(relativeExtensionDir)) {
-    return false;
-  }
-
-  return [...NPM_UPDATE_COMPAT_SIDECAR_PATHS]
-    .filter((relativePath) => relativePath.startsWith(`${relativeExtensionDir}/`))
-    .every((relativePath) => existsSync(join(params.packageRoot, relativePath)));
-}
-
 function readBundledExtensionPackageJsons(packageRoot: string): {
   manifests: InstalledBundledExtensionManifestRecord[];
   errors: string[];
@@ -218,9 +196,6 @@ function readBundledExtensionPackageJsons(packageRoot: string): {
     const extensionDirPath = join(extensionsDir, entry.name);
     const packageJsonPath = join(extensionsDir, entry.name, "package.json");
     if (!existsSync(packageJsonPath)) {
-      if (isNpmUpdateCompatOnlyExtensionDir({ extensionId: entry.name, packageRoot })) {
-        continue;
-      }
       if (expectedPackageIds === null || expectedPackageIds.has(entry.name)) {
         errors.push(`installed bundled extension manifest missing: ${packageJsonPath}.`);
       }
diff --git a/scripts/openclaw-npm-release-check.ts b/scripts/openclaw-npm-release-check.ts
index 49ca6dff643..eb5c40adde0 100644
--- a/scripts/openclaw-npm-release-check.ts
+++ b/scripts/openclaw-npm-release-check.ts
@@ -9,7 +9,6 @@ import {
   resolveNpmDistTagMirrorAuth as resolveNpmDistTagMirrorAuthBase,
   parseReleaseVersion as parseReleaseVersionBase,
 } from "./lib/npm-publish-plan.mjs";
-import { NPM_UPDATE_COMPAT_SIDECAR_PATHS } from "./lib/npm-update-compat-sidecars.mjs";
 import { WORKSPACE_TEMPLATE_PACK_PATHS } from "./lib/workspace-bootstrap-smoke.mjs";
 
 type PackageJson = {
@@ -465,9 +464,6 @@ function collectPackedTarballErrors(): string[] {
 export function collectForbiddenPackedPathErrors(paths: Iterable<string>): string[] {
   const errors: string[] = [];
   for (const packedPath of paths) {
-    if (NPM_UPDATE_COMPAT_SIDECAR_PATHS.has(packedPath)) {
-      continue;
-    }
     const matchedRule = FORBIDDEN_PACKED_PATH_RULES.find((rule) =>
       packedPath.startsWith(rule.prefix),
     );
diff --git a/scripts/write-npm-update-compat-sidecars.mjs b/scripts/write-npm-update-compat-sidecars.mjs
deleted file mode 100644
index 1b65463df7a..00000000000
--- a/scripts/write-npm-update-compat-sidecars.mjs
+++ /dev/null
@@ -1,10 +0,0 @@
-#!/usr/bin/env node
-
-import fs from "node:fs";
-import path from "node:path";
-import { NPM_UPDATE_COMPAT_SIDECARS } from "./lib/npm-update-compat-sidecars.mjs";
-
-for (const entry of NPM_UPDATE_COMPAT_SIDECARS) {
-  fs.mkdirSync(path.dirname(entry.path), { recursive: true });
-  fs.writeFileSync(entry.path, entry.content, "utf8");
-}
diff --git a/test/openclaw-npm-postpublish-verify.test.ts b/test/openclaw-npm-postpublish-verify.test.ts
index 176448210bb..51522df0e9f 100644
--- a/test/openclaw-npm-postpublish-verify.test.ts
+++ b/test/openclaw-npm-postpublish-verify.test.ts
@@ -301,7 +301,7 @@ describe("collectInstalledMirroredRootDependencyManifestErrors", () => {
     }
   });
 
-  it("allows npm update compatibility sidecar directories without package.json", () => {
+  it("rejects private qa sidecar directories that are missing package.json", () => {
     const packageRoot = makeInstalledPackageRoot();
 
     try {
@@ -322,7 +322,10 @@ describe("collectInstalledMirroredRootDependencyManifestErrors", () => {
         "utf8",
       );
 
-      expect(collectInstalledMirroredRootDependencyManifestErrors(packageRoot)).toEqual([]);
+      expect(collectInstalledMirroredRootDependencyManifestErrors(packageRoot)).toEqual([
+        `installed bundled extension manifest missing: ${join(packageRoot, "dist/extensions/qa-channel/package.json")}.`,
+        `installed bundled extension manifest missing: ${join(packageRoot, "dist/extensions/qa-lab/package.json")}.`,
+      ]);
     } finally {
       rmSync(packageRoot, { recursive: true, force: true });
     }
diff --git a/test/openclaw-npm-release-check.test.ts b/test/openclaw-npm-release-check.test.ts
index 910b95cf7dd..b64b683c46e 100644
--- a/test/openclaw-npm-release-check.test.ts
+++ b/test/openclaw-npm-release-check.test.ts
@@ -325,6 +325,8 @@ describe("collectForbiddenPackedPathErrors", () => {
       ]),
     ).toEqual([
       'npm package must not include private QA channel artifact "dist/extensions/qa-channel/package.json".',
+      'npm package must not include private QA channel artifact "dist/extensions/qa-channel/runtime-api.js".',
+      'npm package must not include private QA lab artifact "dist/extensions/qa-lab/runtime-api.js".',
       'npm package must not include private QA lab artifact "dist/extensions/qa-lab/src/cli.js".',
     ]);
   });