Grades are a hygiene check, not a security guarantee.

MCP, MCP server

browserpaw

BrowserPaw Control your everyday Chrome browser from AI agents, without losing logins or focus. Project Map

Compatibility: Not stated.

Grade C

One Medium finding. Read the findings before installing.

Graded by PlugVetRubric v2

Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.

Rescanned at commit 8740332039a6, unchanged since the check below.

INSTALL_LIFECYCLE_HOOK

Why this grade

  • INSTALL_LIFECYCLE_HOOK Medium

    A package install hook (preinstall, install, postinstall or prepare) runs a script.

    package.json, line 42 prepare

Any High, or two or more Medium findings, give D. One Medium gives C. Low findings or a security Note give B. Each code names a finding behind the letter.

Grades are a hygiene check of the source at the commit shown, on the date checked, not a security audit or a guarantee. The free directory grades are automated. Before release, a PlugVet engineer reviews every paid report and any grade we hold back, including all F grades, against the source code and the evidence we quote.

What was checked

Plain notes from the hygiene checks.

  • Permissions

    Concern

    can delete files.

    PERMISSION_DELETE_FILES

    app/native-server/src/file-handler-unique.test.ts, line 82

    fs.unlinkSync(siblingPath);

    app/native-server/src/file-handler-unique.test.ts, line 101

    fs.rmSync(activeUuidDir, { recursive: true, force: true });

    app/native-server/src/file-handler-unique.test.ts, line 102

    fs.rmSync(nonUuidDir, { recursive: true, force: true });

    Show more

    app/native-server/src/file-handler-unique.test.ts, line 125

    fs.rmSync(tmpRoot, { recursive: true, force: true });

    app/native-server/src/file-handler.ts, line 888

    fs.rmSync(entryPath, { recursive: true, force: true });

    app/native-server/src/file-handler.ts, line 890

    fs.unlinkSync(entryPath);

    app/native-server/src/mcp/register-tools.test.ts, line 299

    fs.rmSync(tmpRoot, { recursive: true, force: true });

    app/native-server/src/scripts/build.test.ts, line 33

    fs.rmSync(tmpDir, { recursive: true, force: true });

    docs/archive/handoffs/HANDOFF-refactor-phase.zh-CN.md, line 215

    - Windows 下执行 `.cmd` 或 `.bat` 批处理文件时,Node.js `child_process.spawn` 必须显式传入 `{ shell: true }`,并严谨转义命令参数,避免触发 CVE-2024-27980 安全异常。

  • Install and update

    Concern

    runs a script at install time.

    INSTALL_LIFECYCLE_HOOK

    package.json, line 42

    prepare

  • Network

    Concern

    can reach a host that is not written as a fixed address. can reach 127.. The description does not name that host.

    NETWORK_NO_FIXED_HOST NETWORK_UNNAMED_HOST

    app/chrome-extension/entrypoints/background/native-host.ts, line 41

    const res = await fetch(`http://127.0.0.1:${port}/ping`, { signal: controller.signal });

    app/chrome-extension/entrypoints/background/tools/browser/doctor.ts, line 47

    const res = await fetch(`http://127.0.0.1:${serverPort}/ping`, {

    app/chrome-extension/entrypoints/background/tools/browser/insert-media.ts, line 59

    const resp = await fetch(fetchTargetUrl);

    Show more

    app/chrome-extension/entrypoints/background/tools/browser/insert-media.ts, line 101

    const resp = await fetch(mediaUrl.toString());

    app/chrome-extension/entrypoints/background/tools/browser/javascript.ts, line 719

    fetch: (url, opts) => window.fetch(url, opts),

    app/chrome-extension/entrypoints/popup/jev-api.ts, line 81

    return fetch(url, {

    app/chrome-extension/inject-scripts/network-helper.js, line 65

    const resp = await fetch(url);

    app/chrome-extension/inject-scripts/network-helper.js, line 87

    const resp = await fetch(String(file.fileUrl));

    app/chrome-extension/inject-scripts/network-helper.js, line 128

    const response = await fetch(url, { ...options, signal });

    app/chrome-extension/utils/image-utils.ts, line 18

    const response = await fetch(dataUrl);

    app/native-server/src/server/jev-model-manager.ts, line 157

    fetch('http://127.0.0.1:8009/touch', { method: 'POST' }).catch(() => {});

    app/native-server/src/server/jev-model-manager.ts, line 564

    const res = await fetch(`http://127.0.0.1:${port}/health`, {

    app/native-server/src/server/jev-model-manager.ts, line 893

    await fetch('http://127.0.0.1:8009/unload', {

    plugins/browserpaw-claude/skills/browserpaw/config/doctor.mjs, line 409

    const localRes = await fetch('http://127.0.0.1:8009/ping', { signal: AbortSignal.timeout(800) });

    plugins/browserpaw-dsh/skills/browserpaw/config/doctor.mjs, line 409

    const localRes = await fetch('http://127.0.0.1:8009/ping', { signal: AbortSignal.timeout(800) });

    plugins/browserpaw/mcp-skills/browserpaw/config/doctor.mjs, line 409

    const localRes = await fetch('http://127.0.0.1:8009/ping', { signal: AbortSignal.timeout(800) });

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_ENV_READ SECRETS_PATH_DOTENV

    app/chrome-extension/wxt.config.ts, line 11

    config({ path: resolve(process.cwd(), '.env') });

    app/chrome-extension/wxt.config.ts, line 12

    config({ path: resolve(process.cwd(), '.env.local') });

    app/chrome-extension/wxt.config.ts, line 14

    const CHROME_EXTENSION_KEY = process.env.CHROME_EXTENSION_KEY;

    Show more

    app/native-server/src/file-handler.ts, line 222

    /([/\\])(\.ssh|\.aws|\.gnupg|\.config|\.chrome-mcp|\.browserpaw|\.env)(?:[/\\]|$|\.)/i;

    app/native-server/src/jev/fast-decision-engine.test.ts, line 9

    delete process.env.TYPESAFE_API_KEY;

    app/native-server/src/jev/fast-decision-engine.test.ts, line 68

    delete process.env.TYPESAFE_API_KEY;

    app/native-server/src/jev/fast-decision-engine.test.ts, line 85

    delete process.env.TYPESAFE_API_KEY;

    app/native-server/src/jev/fast-decision-engine.test.ts, line 97

    delete process.env.TYPESAFE_API_KEY;

    app/native-server/src/jev/fast-decision-engine.test.ts, line 113

    delete process.env.TYPESAFE_API_KEY;

    app/native-server/src/jev/fast-decision-engine.test.ts, line 153

    delete process.env.TYPESAFE_API_KEY;

    app/native-server/src/jev/fast-decision-engine.test.ts, line 192

    delete process.env.TYPESAFE_API_KEY;

    packages/shared/src/tools.ts, line 9

    if (typeof process !== 'undefined' && process?.env) {

    .gitignore, line 30

    # Environment variables

    .gitignore, line 31

    .env

    .gitignore, line 32

    .env.local

    app/chrome-extension/.env.example, line 2

    # Copy this file to .env and replace with your actual private key

  • Agent instructions

    Pass

    No instruction to ignore earlier instructions or to hide a step.

  • Obfuscation

    Note

    a file was over the read cap and was not fully read. the file cap was reached before every file was read.

    OBFUSCATION_FILE_OVER_READ_CAP OBFUSCATION_FILE_CAP_REACHED

    pnpm-lock.yaml, line 1

    ---

    app/chrome-extension/entrypoints/background/tools/browser/dom-indexer.ts, line 1

    import {

    plugins/browserpaw/__init__.py, line 1

    """BrowserPaw optional Hermes tools, delegated through the public MCP client."""

  • Licence

    Pass

    A licence file is present (LICENSE).

  • Maintainer activity

    Pass

    The latest commit is within the last 365 days.

Note

Hygiene check of commit 8740332039a6. can delete files. runs a script at install time. can reach a host that is not written as a fixed address. can reach 127.. The description does not name that host. reads a credential or environment file. a file was over the read cap and was not fully read. the file cap was reached before every file was read.

Date and source

Date checked:

View source

github.com

Commit graded: 8740332039a6f2ee3afe88e51339d02ed4ceb055

This link goes to the original host. PlugVet does not host or check what you download from there, and installing it is your own decision and risk.

Read how this letter is chosen