Byob has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments. Licensed under MIT.

How do I install Byob?

Byob can be installed by cloning its GitHub repository and following the setup instructions in the README.

What AI clients work with Byob?

Byob is compatible with Claude Desktop, Cursor, Claude Code, and most MCP clients that support stdio transport. It uses stdio transport.

Is Byob actively maintained?

Byob is actively maintained — last commit was 0 days ago. It has 75 GitHub stars.

Byob

Name: Byob
Author: wxtsky

by wxtsky

Bring Your Own Browser — let your AI agent use the Chrome you already have open

75 0 tools GitHub

No known CVEs

MIT license

Actively maintained

Last commit 0d ago

Untested

Transport: stdio

0 tools

Grade F

AI / ML

Step 1

Install in your client

Config is the same across clients — only the file and path differ.

Untested on Claude Desktopstdio · Node 18+

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "byob": {
      "command": "<see-readme>",
      "args": []
    }
  }
}

Are you the author?

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[![MCPpedia Score](https://mcppedia.org/api/badge/byob)](https://mcppedia.org/s/byob)

Read me

What Byob does

Bring Your Own Browser — let your AI agent use the Chrome you already have open

Test This Server

No automated test available for this server. Check the GitHub README for setup instructions.

Loading README…

Scored, not listed

Why this score

Five weighted categories — click any category to see the underlying evidence.

Score breakdown

32/100across 5 weighted dimensions

How we score →

0255075100

−68

Security

Maintenance

Efficiency

Documentation

Compatibility

Categoriesclick a row to see evidence

Security

OSV.dev

No known CVEs.

No package registry to scan.

Help improve this page

This server is missing a description. Tools and install config are also missing.If you've used it, help the community.

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Community

Reviews

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Have you used this server?

Share your experience — it helps other developers decide.

How easy was setup?Did it work reliably?How was the documentation?

Frequently Asked Questions

Is Byob safe to use?: Byob has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments. Licensed under MIT.
How do I install Byob?: Byob can be installed by cloning its GitHub repository and following the setup instructions in the README.
What AI clients work with Byob?: Byob is compatible with Claude Desktop, Cursor, Claude Code, and most MCP clients that support stdio transport. It uses stdio transport.
Is Byob actively maintained?: Byob is actively maintained — last commit was 0 days ago. It has 75 GitHub stars.

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Community

Discussion

Start a conversation

Ask a question, share a tip, or report an issue.

Has anyone used this with Cursor?How do you handle auth?Any alternatives?

AI / ML

Step 1

Install in your client

Config is the same across clients — only the file and path differ.

Untested on Claude Desktopstdio · Node 18+

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "byob": {
      "command": "<see-readme>",
      "args": []
    }
  }
}

Are you the author?

Add this badge to your README to show your security score and help users find safe servers.

Embed in your READMEAbout badges →

[![MCPpedia Score](https://mcppedia.org/api/badge/byob)](https://mcppedia.org/s/byob)

Read me

What Byob does

Bring Your Own Browser — let your AI agent use the Chrome you already have open

Test This Server

No automated test available for this server. Check the GitHub README for setup instructions.

README

byob

Bring Your Own Browser — let your AI assistant use the Chrome you already have open.

English · 中文

byob is a local MCP server that lets AI coding tools (Claude Code, Cursor, Cline, Windsurf, etc.) directly control your real Chrome — the one where you're already logged into everything.

"read my Twitter timeline and summarize the top 5 posts"
"google 'mcp protocol spec', click the first result, read the page"
"take a screenshot of example.com"
"grab my GitHub session cookie so I can curl with it"
"open my Gmail tab and tell me how many unread"

	WebFetch	Headless Puppeteer	byob
Sees logged-in pages	❌	⚠️ manual cookie copy	✅ already logged in
Passes bot detection	❌	❌	✅ real human browser
Setup time	0	hours	~5 min
Cloud cost	free	$$	free

Install

Quick install (recommended)

curl -fsSL https://raw.githubusercontent.com/wxtsky/byob/main/install.sh | bash

The script checks prerequisites (Node.js ≥ 20, bun, Chrome), clones the repo, builds everything, and walks you through MCP registration interactively. If bun is not installed, it offers to install it for you.

Set BYOB_INSTALL_DIR to change the install location (default: ~/byob).

Manual install

Prefer to do it yourself?

Requires Node.js ≥ 20, bun, Chrome, and any MCP-compatible AI tool.

git clone https://github.com/wxtsky/byob
cd byob
bun install
bun run setup

bun run setup walks through the install interactively:

Pick output language (English / 中文)
Generates a unique extension key for you
Builds the Chrome extension
Writes the config that lets Chrome talk to byob
Prompts you to multi-select your AI tools, then registers each one (CLI tools via their mcp add command, JSON-config tools by writing the config file directly)

After the script finishes, three manual steps remain:

Step 2 — Load extension in Chrome

Open chrome://extensions in Chrome.

Top-right → turn ON Developer mode
Top-left → click Load unpacked
Select the folder printed in your terminal, something like:
```
/your/path/to/byob/packages/extension/output/chrome-mv3
```

Step 3 — Restart Chrome

Quit Chrome completely (⌘Q on Mac / close all windows on Windows), then reopen.

Closing a single tab or window is not sufficient — Chrome only reads the Native Messaging config at startup.

Step 4 — (Reference) Manual MCP registration

The setup script registers your selected tools automatically. The block below is for reference only — use it if you skipped the prompt or want to register a different tool later:

Claude Code

claude mcp add byob -s user -- /path/to/tsx /path/to/byob-mcp.ts

To enable browser_eval, add -e BYOB_ALLOW_EVAL=1 after -s user.

Codex CLI

codex mcp add byob -- /path/to/tsx /path/to/byob-mcp.ts

Cursor

Add to .cursor/mcp.json (project) or ~/.cursor/mcp.json (global):

{
  "mcpServers": {
    "byob": {
      "command": "/path/to/tsx",
      "args": ["/path/to/byob-mcp.ts"]
    }
  }
}

Windsurf

Add to ~/.codeium/windsurf/mcp_config.json (same JSON format as Cursor):

{
  "mcpServers": {
    "byob": {
      "command": "/path/t

... [View full README on GitHub](https://github.com/wxtsky/byob#readme)

Loading README…

Scored, not listed

Why this score

Five weighted categories — click any category to see the underlying evidence.

Score breakdown

32/100across 5 weighted dimensions

How we score →

0255075100

−68

Security

Maintenance

Efficiency

Documentation

Compatibility

Categoriesclick a row to see evidence

Security

OSV.dev

No known CVEs.

No package registry to scan.

Help improve this page

This server is missing a description. Tools and install config are also missing.If you've used it, help the community.

Add information

Community

Reviews

Be the first to review

Have you used this server?

Share your experience — it helps other developers decide.

How easy was setup?Did it work reliably?How was the documentation?

Frequently Asked Questions

Is Byob safe to use?: Byob has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments. Licensed under MIT.
How do I install Byob?: Byob can be installed by cloning its GitHub repository and following the setup instructions in the README.
What AI clients work with Byob?: Byob is compatible with Claude Desktop, Cursor, Claude Code, and most MCP clients that support stdio transport. It uses stdio transport.
Is Byob actively maintained?: Byob is actively maintained — last commit was 0 days ago. It has 75 GitHub stars.