Gives Claude a one-call deploy: push HTML/CSS/JS or ASP.NET Razor to a live HTTPS subdomain under sites.runcabin.com, free. When you're ready to ship on a real domain, the server handles custom domain attachment for $19.99/month with automatic SSL via Let's Encrypt and email forwarding through ImprovMX. Each deploy spins up an isolated Docker container on DigitalOcean with Traefik routing, a private Postgres schema, and optional GitHub repo backing. Useful when you're prototyping in a chat with Claude and want "put this online" to actually work without leaving the conversation. The MCP server wraps RunCabin's deployment API, so paid steps require human approval and the AI never spends without confirmation.