Cloudflare Launches Kitesurf Browser Updates: WebMCP Support, Expanded Standards, and Terminal Rendering

Cloudflare’s Kitesurf browser, built entirely on Cloudflare Workers, now supports WebMCP, letting AI agents call site functions like searchFlights() instead of simulating clicks. The browser’s API set has grown to include CSS Layout, CSSOM, CSS Typed OM, Custom Elements, URL‑based module resolution, JSON modules, and import maps, while iframe handling and font loading have been refined for better performance. Kitesurf now passes over 730,000 Web Platform Tests, a 500,000‑test increase since launch, and its internal optimizations keep DOM traversal, timers, and script loading lightweight for agent workloads. The Browser Run API now fully covers Kitesurf, enabling use with CDP, Playwright, Puppeteer, and MCP, and Quick Actions can be invoked directly from a Worker script. Finally, Kitesurf’s rendering engine has been decoupled from the page logic, allowing pages to be rendered in terminal graphics protocols like Kitty or in plain ANSI text, making headless browsing accessible from the command line.