Crewhelm is an open-source, self-hosted playground for long-lived AI agents on your own Cloudflare account. Spin it up with one command, then use Claude, Codex, or any MCP client to create agents, connect tools, schedule jobs, react to events, and share reusable recipes. No new dashboard or workflow engine to babysit—just a quick way to play with agent ideas and turn the good ones into things that keep running.