An MCP server that gives AI agents rich, programmatic control over Zen Browser, with first-class support for Zen-specific features such as Workspaces.
View on GitHub ↗zen-mcp exposes Zen Browser automation through a local bridge and a Zen Browser extension. External MCP clients connect through WebSocket or Streamable HTTP MCP, the extension receives MCP requests, and tool implementations call Zen Browser APIs from inside the browser context.
- 46 callable MCP tools: 43 core tools and 3 diagnostic tools. - Browser automation through MCP. - WebSocket MCP at ws://localhost:9222 and Streamable HTTP MCP at http://localhost:9222/mcp. - Navigation, inspection, interaction, network capture, and workspace management. - Debug console at http://localhost:9222/.
See the complete tool API reference for the tool reference.
- src/go-bridge/: Go bridge for WebSocket, Streamable HTTP MCP, and the debug frontend. - src/extension/: Firefox/Zen extension and browser automation library. - src/debug-frontend/: browser-based bridge console.
npm --prefix build/extension run build:all creates one platform-independent XPI and static Go bridge packages for Linux, macOS, and Windows. See the Go bridge release guide and XPI installation guide.
- npm --prefix build/extension run bridge:test: run Go bridge tests. - npm --prefix build/extension run bridge:build: build the Go bridge and embed the standalone debug frontend assets. - npm --prefix build/extension run bridge:build:all: build static Linux, macOS, and Windows bridge packages. - npm --prefix build/extension run bridge: start the Go bridge with HTTP and WebSocket on port 9222 by default. - npm --prefix build/extension run server: start the bridge. - npm --prefix build/extension run server:install: builds t
From the project README.
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