diff --git a/scripts/stage-bundled-plugin-runtime-deps.mjs b/scripts/stage-bundled-plugin-runtime-deps.mjs
index 0c0fe422b21..27d728bf298 100644
--- a/scripts/stage-bundled-plugin-runtime-deps.mjs
+++ b/scripts/stage-bundled-plugin-runtime-deps.mjs
@@ -1,4 +1,5 @@
 import { spawnSync } from "node:child_process";
+import { createHash } from "node:crypto";
 import fs from "node:fs";
 import path from "node:path";
 import { pathToFileURL } from "node:url";
@@ -17,6 +18,10 @@ function removePathIfExists(targetPath) {
   fs.rmSync(targetPath, { recursive: true, force: true });
 }
 
+function makeTempDir(parentDir, prefix) {
+  return fs.mkdtempSync(path.join(parentDir, prefix));
+}
+
 function listBundledPluginRuntimeDirs(repoRoot) {
   const extensionsRoot = path.join(repoRoot, "dist", "extensions");
   if (!fs.existsSync(extensionsRoot)) {
@@ -82,6 +87,27 @@ function sanitizeBundledManifestForRuntimeInstall(pluginDir) {
   if (changed) {
     writeJson(manifestPath, packageJson);
   }
+
+  return packageJson;
+}
+
+function resolveRuntimeDepsStampPath(pluginDir) {
+  return path.join(pluginDir, ".openclaw-runtime-deps-stamp.json");
+}
+
+function createRuntimeDepsFingerprint(packageJson) {
+  return createHash("sha256").update(JSON.stringify(packageJson)).digest("hex");
+}
+
+function readRuntimeDepsStamp(stampPath) {
+  if (!fs.existsSync(stampPath)) {
+    return null;
+  }
+  try {
+    return readJson(stampPath);
+  } catch {
+    return null;
+  }
 }
 
 export function resolveNpmRunner(params = {}) {
@@ -190,8 +216,11 @@ function buildCmdExeCommandLine(command, args) {
   return [escapeForCmdExe(command), ...args.map(escapeForCmdExe)].join(" ");
 }
 
-function installPluginRuntimeDeps(pluginDir, pluginId) {
-  sanitizeBundledManifestForRuntimeInstall(pluginDir);
+function installPluginRuntimeDeps(params) {
+  const { fingerprint, packageJson, pluginDir, pluginId } = params;
+  const nodeModulesDir = path.join(pluginDir, "node_modules");
+  const stampPath = resolveRuntimeDepsStampPath(pluginDir);
+  const tempInstallDir = makeTempDir(pluginDir, ".runtime-deps-");
   const npmRunner = resolveNpmRunner({
     npmArgs: [
       "install",
@@ -202,34 +231,66 @@ function installPluginRuntimeDeps(pluginDir, pluginId) {
       "--package-lock=false",
     ],
   });
-  const result = spawnSync(npmRunner.command, npmRunner.args, {
-    cwd: pluginDir,
-    encoding: "utf8",
-    env: npmRunner.env,
-    stdio: "pipe",
-    shell: npmRunner.shell,
-    windowsVerbatimArguments: npmRunner.windowsVerbatimArguments,
-  });
-  if (result.status === 0) {
-    return;
+  try {
+    writeJson(path.join(tempInstallDir, "package.json"), packageJson);
+    const result = spawnSync(npmRunner.command, npmRunner.args, {
+      cwd: tempInstallDir,
+      encoding: "utf8",
+      env: npmRunner.env,
+      stdio: "pipe",
+      shell: npmRunner.shell,
+      windowsVerbatimArguments: npmRunner.windowsVerbatimArguments,
+    });
+    if (result.status !== 0) {
+      const output = [result.stderr, result.stdout].filter(Boolean).join("\n").trim();
+      throw new Error(
+        `failed to stage bundled runtime deps for ${pluginId}: ${output || "npm install failed"}`,
+      );
+    }
+
+    const stagedNodeModulesDir = path.join(tempInstallDir, "node_modules");
+    if (!fs.existsSync(stagedNodeModulesDir)) {
+      throw new Error(
+        `failed to stage bundled runtime deps for ${pluginId}: npm install produced no node_modules directory`,
+      );
+    }
+
+    removePathIfExists(nodeModulesDir);
+    fs.renameSync(stagedNodeModulesDir, nodeModulesDir);
+    writeJson(stampPath, {
+      fingerprint,
+      generatedAt: new Date().toISOString(),
+    });
+  } finally {
+    removePathIfExists(tempInstallDir);
   }
-  const output = [result.stderr, result.stdout].filter(Boolean).join("\n").trim();
-  throw new Error(
-    `failed to stage bundled runtime deps for ${pluginId}: ${output || "npm install failed"}`,
-  );
 }
 
 export function stageBundledPluginRuntimeDeps(params = {}) {
   const repoRoot = params.cwd ?? params.repoRoot ?? process.cwd();
+  const installPluginRuntimeDepsImpl =
+    params.installPluginRuntimeDepsImpl ?? installPluginRuntimeDeps;
   for (const pluginDir of listBundledPluginRuntimeDirs(repoRoot)) {
     const pluginId = path.basename(pluginDir);
-    const packageJson = readJson(path.join(pluginDir, "package.json"));
+    const packageJson = sanitizeBundledManifestForRuntimeInstall(pluginDir);
     const nodeModulesDir = path.join(pluginDir, "node_modules");
-    removePathIfExists(nodeModulesDir);
+    const stampPath = resolveRuntimeDepsStampPath(pluginDir);
     if (!hasRuntimeDeps(packageJson) || !shouldStageRuntimeDeps(packageJson)) {
+      removePathIfExists(nodeModulesDir);
+      removePathIfExists(stampPath);
       continue;
     }
-    installPluginRuntimeDeps(pluginDir, pluginId);
+    const fingerprint = createRuntimeDepsFingerprint(packageJson);
+    const stamp = readRuntimeDepsStamp(stampPath);
+    if (fs.existsSync(nodeModulesDir) && stamp?.fingerprint === fingerprint) {
+      continue;
+    }
+    installPluginRuntimeDepsImpl({
+      fingerprint,
+      packageJson,
+      pluginDir,
+      pluginId,
+    });
   }
 }
 
diff --git a/test/scripts/stage-bundled-plugin-runtime-deps.test.ts b/test/scripts/stage-bundled-plugin-runtime-deps.test.ts
index 0c675bdec66..d6f7d2acb8b 100644
--- a/test/scripts/stage-bundled-plugin-runtime-deps.test.ts
+++ b/test/scripts/stage-bundled-plugin-runtime-deps.test.ts
@@ -1,6 +1,11 @@
+import fs from "node:fs";
+import os from "node:os";
 import path from "node:path";
 import { describe, expect, it } from "vitest";
-import { resolveNpmRunner } from "../../scripts/stage-bundled-plugin-runtime-deps.mjs";
+import {
+  resolveNpmRunner,
+  stageBundledPluginRuntimeDeps,
+} from "../../scripts/stage-bundled-plugin-runtime-deps.mjs";
 
 describe("resolveNpmRunner", () => {
   it("anchors npm staging to the active node toolchain when npm-cli.js exists", () => {
@@ -118,3 +123,109 @@ describe("resolveNpmRunner", () => {
     ).toThrow("OpenClaw refuses to shell out to bare npm on Windows");
   });
 });
+
+describe("stageBundledPluginRuntimeDeps", () => {
+  function createBundledPluginFixture(params: {
+    packageJson: Record<string, unknown>;
+    pluginId?: string;
+  }) {
+    const repoRoot = fs.mkdtempSync(path.join(os.tmpdir(), "openclaw-runtime-deps-"));
+    const pluginId = params.pluginId ?? "fixture-plugin";
+    const pluginDir = path.join(repoRoot, "dist", "extensions", pluginId);
+    fs.mkdirSync(pluginDir, { recursive: true });
+    fs.writeFileSync(
+      path.join(pluginDir, "package.json"),
+      `${JSON.stringify(params.packageJson, null, 2)}\n`,
+      "utf8",
+    );
+    return { pluginDir, repoRoot };
+  }
+
+  it("skips restaging when runtime deps stamp matches the sanitized manifest", () => {
+    const { pluginDir, repoRoot } = createBundledPluginFixture({
+      packageJson: {
+        name: "@openclaw/fixture-plugin",
+        version: "1.0.0",
+        dependencies: { "left-pad": "1.3.0" },
+        peerDependencies: { openclaw: "^1.0.0" },
+        peerDependenciesMeta: { openclaw: { optional: true } },
+        devDependencies: { openclaw: "^1.0.0" },
+        openclaw: { bundle: { stageRuntimeDependencies: true } },
+      },
+    });
+    const nodeModulesDir = path.join(pluginDir, "node_modules");
+    fs.mkdirSync(nodeModulesDir, { recursive: true });
+    fs.writeFileSync(path.join(nodeModulesDir, "marker.txt"), "present\n", "utf8");
+
+    let installCount = 0;
+    stageBundledPluginRuntimeDeps({
+      cwd: repoRoot,
+      installPluginRuntimeDepsImpl: ({ fingerprint }: { fingerprint: string }) => {
+        installCount += 1;
+        fs.writeFileSync(
+          path.join(pluginDir, ".openclaw-runtime-deps-stamp.json"),
+          `${JSON.stringify({ fingerprint }, null, 2)}\n`,
+          "utf8",
+        );
+      },
+    });
+    stageBundledPluginRuntimeDeps({
+      cwd: repoRoot,
+      installPluginRuntimeDepsImpl: () => {
+        installCount += 1;
+      },
+    });
+
+    expect(installCount).toBe(1);
+    expect(fs.existsSync(path.join(nodeModulesDir, "marker.txt"))).toBe(true);
+    expect(JSON.parse(fs.readFileSync(path.join(pluginDir, "package.json"), "utf8"))).toEqual({
+      name: "@openclaw/fixture-plugin",
+      version: "1.0.0",
+      dependencies: { "left-pad": "1.3.0" },
+      openclaw: { bundle: { stageRuntimeDependencies: true } },
+    });
+  });
+
+  it("restages when the manifest-owned runtime deps change", () => {
+    const { pluginDir, repoRoot } = createBundledPluginFixture({
+      packageJson: {
+        name: "@openclaw/fixture-plugin",
+        version: "1.0.0",
+        dependencies: { "left-pad": "1.3.0" },
+        openclaw: { bundle: { stageRuntimeDependencies: true } },
+      },
+    });
+
+    let installCount = 0;
+    const stageOnce = () =>
+      stageBundledPluginRuntimeDeps({
+        cwd: repoRoot,
+        installPluginRuntimeDepsImpl: ({ fingerprint }: { fingerprint: string }) => {
+          installCount += 1;
+          const nodeModulesDir = path.join(pluginDir, "node_modules");
+          fs.mkdirSync(nodeModulesDir, { recursive: true });
+          fs.writeFileSync(path.join(nodeModulesDir, "marker.txt"), `${installCount}\n`, "utf8");
+          fs.writeFileSync(
+            path.join(pluginDir, ".openclaw-runtime-deps-stamp.json"),
+            `${JSON.stringify({ fingerprint }, null, 2)}\n`,
+            "utf8",
+          );
+        },
+      });
+
+    stageOnce();
+    const updatedPackageJson = JSON.parse(
+      fs.readFileSync(path.join(pluginDir, "package.json"), "utf8"),
+    );
+    updatedPackageJson.dependencies["is-odd"] = "3.0.1";
+    fs.writeFileSync(
+      path.join(pluginDir, "package.json"),
+      `${JSON.stringify(updatedPackageJson, null, 2)}\n`,
+      "utf8",
+    );
+    stageOnce();
+
+    expect(installCount).toBe(2);
+    expect(fs.readFileSync(path.join(pluginDir, "node_modules", "marker.txt"), "utf8")).toBe("2\n");
+  });
+});