MCP Browser Kit

An MCP Server that enables AI assistants to interact with your local browsers.

Note: Consider using a separate browser profile or dedicated browser instance with this MCP to prevent sensitive data from being unintentionally exposed to AI model providers.

https://github.com/user-attachments/assets/1fbf87fd-06d1-42bf-a06f-cc2bbdf375a8

Usage

1. Add MCP Browser Kit to your MCP Client:

   {
   	"mcpServers": {
   		"browser-kit": {
   			"command": "npx",
   			"args": ["@mcp-browser-kit/server"]
   		}
   	}
   }

2. Choose the right extension build for your browser:

   • Check the Compatibility table below to see which build (M2 or M3) is compatible with your browser
   • Note that M2 builds offer more functionality than M3 builds, so prefer M2 if your browser supports both

3. Download and unzip the latest compatible build from Releases page.

4. Load the extension into a compatible browser and enable it.

5. Refresh open tabs to ensure extension scripts are loaded.

6. Start messaging on your MCP Client:

   Use browser-kit, star the last open GitHub repo on my browser
   

Compatibility table

The M2 build supports more functionalities than the M3 build.

Extension file name patterns:

• M2 build: mcp_browser_kit_m2-[version].zip (e.g., mcp_browser_kit_m2-5.0.0.zip)
• M3 build: mcp_browser_kit_m3-[version].zip (e.g., mcp_browser_kit_m3-5.0.0.zip)

Browser	M2 build	M3 build
Chrome	❌	✅
Brave	✅	✅
Edge	✅	✅
Firefox	✅	❌
Safari	✅	❌

Load Extension

• Chromium-based browsers (Chrome, Brave, Edge)
  1. Open chrome://extensions/
  2. Enable Developer mode
  3. Click Load unpacked
  4. Select the unpacked extension folder
• Firefox
  1. Open about:debugging#/runtime/this-firefox
  2. Click Load Temporary Add-on
  3. Select the manifest.json file in the unpacked extension folder
• Safari
  1. Open Develop > Show Extension Builder
  2. Click + and select Add Extension
  3. Select the unpacked extension folder
  4. Click Install to install the extension