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

This post introduces Kitesurf, a new agent-first browser built on Cloudflare Workers. It details the technical decisions and architecture behind Kitesurf, including the use of Rust compiled to WebAssembly, dynamic workers, isolation, statelessness, and a Chrome DevTools Protocol (CDP) interface for compatibility with tools like Puppeteer. The post highlights the trade-offs made for agentic use (e.g., prioritizing token count over visual perfection) and the challenges of building a browser engine for AI. It also discusses the use of Web Platform Tests (WPT) and integration/visual regression testing for quality assurance, and the role of AI agents in accelerating development.