CLOUDFLARE has announced that Sandboxes and Cloudflare Containers are both generally available, marking a major milestone for agentic development environments. Since its launch last June, Sandboxes have evolved into a persistent, isolated development environment that lets agents run code with a real terminal, a persistent code interpreter and background processes with live preview URLs.
In a partner example, Figma Make was cited as a use case, with the quote attributed to Alex Mullans, AI and Developer Platforms at Figma, saying the infrastructure provides reliable, highly‑scalable sandboxes for untrusted agent- and user-authored code.
The update also highlights secure credential injection, PTY support, and the ability to run stateful Python, JavaScript and TypeScript interpreters, along with filesystem watching, snapshots and higher limits, including 15,000 concurrent lite instances, 6,000 basic, and over 1,000 larger concurrent instances, plus a pricing shift to charge only for active CPU cycles. A snapshot feature is rolling out soon to preserve and restore a container’s full state, with future plans to capture live memory state as well. 13 April 2026.