diff --git a/scripts/e2e/lib/bundled-plugin-install-uninstall/probe.mjs b/scripts/e2e/lib/bundled-plugin-install-uninstall/probe.mjs
index c4a83c82f588..34a1b8d783dc 100644
--- a/scripts/e2e/lib/bundled-plugin-install-uninstall/probe.mjs
+++ b/scripts/e2e/lib/bundled-plugin-install-uninstall/probe.mjs
@@ -102,10 +102,44 @@ function readPluginsList() {
       `Unable to list packaged bundled plugins: ${result.stderr || result.stdout || `exit ${result.status}`}`,
     );
   }
-  const payload = JSON.parse(result.stdout);
+  const payload = parsePluginListOutput(result.stdout);
   return Array.isArray(payload.plugins) ? payload.plugins : [];
 }
 
+function parsePluginListOutput(stdout) {
+  const trimmed = stdout.trim();
+  const parsed = parseJsonValue(trimmed);
+  if (parsed.ok) {
+    return parsed.value;
+  }
+  let lastParsed;
+  for (const line of trimmed.split(/\r?\n/u).toReversed()) {
+    if (!line.trimStart().startsWith("{")) {
+      continue;
+    }
+    const candidate = parseJsonValue(line);
+    if (!candidate.ok) {
+      continue;
+    }
+    lastParsed ??= candidate.value;
+    if (Array.isArray(candidate.value?.plugins)) {
+      return candidate.value;
+    }
+  }
+  if (lastParsed !== undefined) {
+    return lastParsed;
+  }
+  throw new Error(`Unable to parse packaged bundled plugin list JSON: ${trimmed}`);
+}
+
+function parseJsonValue(text) {
+  try {
+    return { ok: true, value: JSON.parse(text) };
+  } catch {
+    return { ok: false };
+  }
+}
+
 function pluginRequiresConfig(pluginDir) {
   const manifestPath = path.join(pluginDir, "openclaw.plugin.json");
   if (!fs.existsSync(manifestPath)) {
diff --git a/test/scripts/bundled-plugin-install-uninstall-probe.test.ts b/test/scripts/bundled-plugin-install-uninstall-probe.test.ts
index 5670ba168d01..37e391594f4c 100644
--- a/test/scripts/bundled-plugin-install-uninstall-probe.test.ts
+++ b/test/scripts/bundled-plugin-install-uninstall-probe.test.ts
@@ -1316,6 +1316,38 @@ describe("bundled plugin install/uninstall probe", () => {
     );
   });
 
+  it("selects packaged plugins when list output includes structured diagnostics", () => {
+    const root = makePackageRoot();
+    const pluginRoot = path.join(root, "dist-runtime", "extensions", "admin-http-rpc");
+    writePluginManifest(root, "dist-runtime/extensions/admin-http-rpc", {
+      id: "admin-http-rpc",
+      configSchema: { required: ["port"] },
+    });
+    fs.writeFileSync(
+      path.join(root, "dist", "index.js"),
+      [
+        "if (process.argv.slice(2).join(' ') !== 'plugins list --json') {",
+        "  process.exit(1);",
+        "}",
+        `console.log(${JSON.stringify(
+          JSON.stringify({
+            plugins: [{ id: "admin-http-rpc", origin: "bundled", rootDir: pluginRoot }],
+          }),
+        )});`,
+        "console.log(JSON.stringify({ level: 'warn', message: 'post-list diagnostic' }));",
+        "",
+      ].join("\n"),
+      "utf8",
+    );
+
+    const result = runProbe(root, {
+      OPENCLAW_BUNDLED_PLUGIN_SWEEP_IDS: undefined,
+    });
+
+    expect(result.status).toBe(0);
+    expect(result.stdout.trim()).toBe(`admin-http-rpc\tadmin-http-rpc\t1\t${pluginRoot}`);
+  });
+
   it("does not select source-only bundled plugins for package-backed sweeps", () => {
     const root = makePackageRoot();
     writePluginManifest(root, "extensions/qa-channel", {