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WebMCP: AI Agent Frontend Testing
This talk introduces WebMCP, a fork of the Chrome DevTools MCP server, enabling AI agents to call frontend tools directly via the CDP websocket for efficient testing.
I wrote a fork of the chrome dev tool MCP server that treats the CDP websocket as an MCP transport layer. This allows to coding agents to call WebMCP tools embedded in web applications. If you want Claude code to test a functionality it just wrote on your web app, it has to take screenshots and simulate clicks. However, with WebMCP, the model can leave tools for itself in the front end code that it can then call via MCP proxy.
This is up to 90% more token efficient and considerably faster for the agentic development feedback loop.
(More info in the repo readme)