Overview
- Cloudflare announced Kitesurf on Friday as a free beta in its Browser Run service so developers building AI agents can programmatically run headless browser sessions on the company’s edge network.
- Kitesurf is a purpose-built, machine-first browser that strips tabs, themes, and extensions and runs components compiled to WebAssembly inside Cloudflare Workers to prioritize structured, machine-readable output.
- The company says Kitesurf uses roughly three to seven times less CPU and memory than full Chromium for common agent tasks like screenshots and HTML extraction while noting some tasks currently run slower and will be optimized.
- Kitesurf speaks the Chrome DevTools Protocol so existing automation tooling such as Puppeteer and Playwright can work without rewriting agents, and it includes isolation and prompt-injection defenses tuned to agent threat models.
- Cloudflare built Kitesurf quickly in about 12 weeks, says it now passes about 215,000 web platform tests, and notes tradeoffs that include no video or WebGL, limited bot‑challenge and persistent‑auth handling, and plans to open-source the project when ready.