Claude Chrome MCP

What is Claude Chrome MCP?

Claude Chrome MCP is a browser automation tool that lets MCP clients (Claude Desktop, Claude Code, Cursor) interact with claude.ai through a Chrome extension and an MCP server.

How to use Claude Chrome MCP?

Install the Chrome extension from the project’s extension/ directory (load unpacked), then install dependencies with npm install in the mcp-server/ directory. Configure Claude Desktop by adding an MCP server entry with command "node" and args pointing to the absolute path of mcp-server/src/server.js. After restarting Claude Desktop, use natural language commands like “Open a new tab” or “List all open Claude tabs.”

Key features of Claude Chrome MCP

• Async message sending with completion detection
• Claude-to-Claude response forwarding
• Conversation management via Claude.ai API
• Network inspection and debugging tools
• WebSocket-only architecture with persistent connections
• Health monitoring endpoint for relay status

Use cases of Claude Chrome MCP

• Automate browser-based interactions with Claude.ai from an MCP client
• Open new tabs and send messages programmatically
• List all open Claude tabs and search past conversations
• Forward responses between multiple Claude instances
• Inspect network traffic for debugging purposes

FAQ from Claude Chrome MCP

What are the prerequisites?

You need Google Chrome, Node.js v16 or higher, and npm installed.

How do I configure Claude Desktop?

In Claude Desktop settings, go to Developer > Edit Config and add a JSON object with "command": "node" and "args" pointing to the absolute path of mcp-server/src/server.js.

How can I test the connection?

After restarting Claude Desktop, try commands like “Check Chrome status” or “Open a new tab” to verify the server is running.

Is there an optional CLI tool?

Yes, you can install it by running npm install && npm run build && npm link in the project root.

What transport does the server use?

It uses a WebSocket relay on port 54321 for persistent connections between the Chrome extension, MCP server, and MCP clients.