mcp-browser-kit

# MCP Browser Kit [](https://www.npmjs.com/package/@mcp-browser-kit/server) [](https://github.com/ndthanhdev/mcp-browser-kit/actions/workflows/ci.yml) [](https://biomejs.dev) [](https://archestra.ai/mcp-catalog/ndthanhdev__mcp-browser-kit) > 🚀 **On the `main` branch?** You're viewing the bleeding-edge dev docs! For other versions, check out the `release/*` branches. An MCP Server that enables AI assistants to interact with your local browsers. https://github.com/user-attachments/assets/1fbf87fd-06d1-42bf-a06f-cc2bbdf375a8 ## Usage 1. Add MCP Browser Kit to your MCP Client: ```json { "mcpServers": { "browser-kit": { "command": "npx", "args": ["@mcp-browser-kit/server@latest"] } } } ``` 2. Choose the right extension build for your browser: - Check the [Compatibility table](#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 the latest compatible build from [The Latest Release](https://github.com/ndthanhdev/mcp-browser-kit/releases/latest). 4. [Load the extension](#load-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 ``` 7. Optional, check [User Notes](#user-notes) for more information. ## Compatibility table > The M2 build supports more functionalities than the M3 build. > Extension file name patterns: > - M2 build: > - Chromium: `mcp_browser_kit_m2-<version>.zip` (e.g., `mcp_browser_kit_m2-5.0.0.zip`) > - Firefox: `mcp_browser_kit_m2-<version>.xpi` (e.g., `mcp_browser_kit_m2-5.0.0.xpi`) > - 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. Unzip the downloaded `.zip` file 2. Open [chrome://extensions/](chrome://extensions/) 3. Enable `Developer mode` 4. Click `Load unpacked` 5. Select the unpacked extension folder - Firefox 1. Open [about:addons](about:addons) 2. Click the gear icon and select `Install Add-on From File` 3. Select the downloaded `.xpi` file - Safari 1. Unzip the downloaded `.zip` file 2. Open `Develop > Show Extension Builder` 3. Click `+` and select `Add Extension` 4. Select the unpacked extension folder 5. Click `Install` to install the extension # User Notes > **Note for Alpha stage**: 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. > **Security**: BrowserKit currently lacks authentication for incoming requests. Keep ports 59089 and 2769-2799 on your device network only.