Cloudflare has open-sourced the Kitesurf engine

Cloudflare has released the source code for its experimental browser engine, Kitesurf. The project, originally introduced in August 2026, is now fully open to external developers.

The update allows engineers to modify the tool's source code, deploy the engine locally on their own hardware, and integrate it into cloud architectures. Kitesurf was created specifically to automate tasks performed by autonomous AI agents in web environments.

Opening the code gives developers the ability to customize the behavior of the browser environment for specific automation scenarios and reduce cloud infrastructure costs when running agents.