Kapture

Kapture - Browser Automation via Chrome DevTools

Kapture is a Chrome DevTools Extension that enables browser automation through the Model Context Protocol (MCP). It allows AI applications like Claude to control web browsers via a three-layer architecture.

✨ Key Feature: Multiple AI clients can connect to the same server! Claude Desktop, Cline, and other MCP clients can all control browser tabs through a single server instance.

Kapture bridges AI assistants with web browsers through:

- MCP Server: Handles MCP protocol communication
- Chrome Extension: Background service worker executes browser automation commands (DevTools does not need to be open)
- WebSocket Bridge: Real-time communication between server and extensions
- Multi-Client Support: Multiple AI clients can connect simultaneously via WebSocket

# Server cd server npm install npm run build # Test App (optional) cd test-app npm install

Option A: Install from Chrome Web Store (Recommended)

Configure your AI clientand open it. It will start the MCP server automatically.

# Server cd server npm start # Test App cd test-app npm start

{ "mcpServers": { "kapture": { "command": "npx", "args": ["-y", "kapture-mcp@latest", "bridge"] } } }

Option 2: Direct WebSocket connection (Advanced)

For advanced use cases where you need manual server control:
- Configure Claude Desktop to connect via WebSocket:

{ "mcpServers": { "kapture": { "transport": "websocket", "url": "ws://localhost:61822/mcp" } } }

Note: This approach requires manually managing the server lifecycle. Use Option 1 (bridge command) for most use cases.