We should be giving all agents tools that excel at what’s important for an AI model. Kitesurf is Cloudflare’s new stateless, highly scalable, and cost-effective web browser that runs entirely on top of Workers and was designed specifically for the Agentic Cloud.

Cloudflare's platform is a leading provider of internet security and performance solutions, offering insights into web security, content delivery, and DNS management. Through documentation, blog posts, and webinars, Cloudflare provides insights into protecting websites and applications from cyber threats and improving performance. Developers and IT professionals can learn about CDN (Content Delivery Network), DDoS mitigation, and firewall configurations to secure and accelerate web traffic.

Cloudflare

Cloudflare has launched Kitesurf, a new agent-first headless browser built entirely on Cloudflare Workers using V8 isolates, WebAssembly, and Rust. Unlike Chromium-based browsers, Kitesurf is designed specifically for AI agents, prioritizing low memory and CPU usage over pixel-perfect rendering. It uses components like a sandboxed outbound worker, a PageScript isolate for DOM/JS execution, and a PageRenderer for rasterization. Benchmarks show 3–7× lower CPU and memory usage than Chromium, though wall time is ~1.7× slower. It already passes 215,000+ Web Platform Tests and supports Puppeteer, Playwright, and MCP clients via CDP. Available free in beta through Browser Run, with plans to open source it.

Introducing Kitesurf: The agent-first browser that runs in V8 isolates on Cloudflare Workers

Copy link Kitesurf passes 215,000+ WPT tests and growing

<p>the cpu/memory win here is real but that 1.7x wall time hit would sting for anything user-facing waiting on a response. fine for background agent scraping, rough if you’re inside a worker’s tight cpu budget on the request path.</p>
