Agents need a computer, not a container: @cloudflare/computer
Cloudflare has released an early preview of @cloudflare/computer, an open-source agent runtime that pushes against the default assumption that every agent needs its own container. The package's core is a durable, SQLite-backed virtual filesystem called a workspace, which can be shared across execution backends behind one exec(string, options) interface. Two backends are included: an isolate-based backend that translates shell code into JavaScript via just-bash and runs it in a worker, and a container backend using a FUSE mount so file changes are synced back. The post includes code showing how to attach the workspace to an agent on a Durable Object with @cloudflare/think, and argues isolates are the only realistic path to scaling to billions of agents because they can spin up, tear down, and hibernate with state. Aimed at engineers building agent harnesses. The library is in early preview and ships without benchmarks.