Chrome Extension MCP Server (Go Version)

A Go implementation of the Model Context Protocol (MCP) server for Chrome Extension API, enabling Claude to interact with Chrome browser extensions.

Overview

This project is a Go implementation of the original TypeScript version of the Chrome Extension MCP Server. It provides a WebSocket server that bridges the Claude AI with Chrome extensions, allowing Claude to perform various browser operations through the Chrome API.

Features

• WebSocket server for Chrome extension communication
• Support for Model Context Protocol (MCP)
• Various Chrome browser operations through tools:
  • Tab management
  • DOM manipulation
  • CSS injection
  • Extension management
  • Cookie access
  • Screenshot capture
  • And more

Installation

1. Install Chrome Extension

Using Docker

1. Build and run the Docker container:

docker build -t mcp/chromeextension-go .
docker run -i --rm mcp/chromeextension-go

2. Extract the extension package (if not already available):

docker cp $(docker ps -q -f ancestor=mcp/chromeextension-go):/app/extension extension

3. Install in Chrome:
   • Open Chrome and go to chrome://extensions/
   • Enable "Developer mode" in the top right
   • Click "Load unpacked" and select the extracted extension directory

Manual Installation

1. Navigate to the extension directory:

cd extension

2. Load in Chrome:
   • Open Chrome and go to chrome://extensions/
   • Enable "Developer mode" in the top right
   • Click "Load unpacked" and select the extension directory

2. Running the Server

From Source

go run main.go

Using Binary

go build
./chrome-extension-mcp-go

3. Configure MCP Server for Claude

Add the following to your claude_desktop_config.json:

{
  "mcpServers": {
    "chromeextension": {
      "command": "path/to/chrome-extension-mcp-go",
      "args": [],
      "env": {
        "CHROME_EXTENSION_ID": "your-extension-id"
      }
    }
  }
}

Tools

This MCP server provides the following tools to Claude:

1. chrome_get_active_tab: Get information about the currently active tab
2. chrome_get_all_tabs: Get information about all open tabs
3. chrome_execute_script: Execute DOM operations in the context of a web page
4. chrome_inject_css: Inject CSS into a web page
5. chrome_get_extension_info: Get information about installed extensions
6. chrome_send_message: Send a message to an extension's background script
7. chrome_get_cookies: Get cookies for a specific domain
8. chrome_capture_screenshot: Take a screenshot of the current tab
9. chrome_create_tab: Create a new tab with specified URL and options

License

This project is licensed under the MIT License.