Hosted Clusters in Pomerium Zero & MCP Hacking (endpoints from localhost via ssh)

If you’re building an MCP server and you want a public model (ChatGPT, Claude, or Gemini) to actually call it, you hit the same wall: All the frontier models need a public HTTPS URL. So instead of hacking on whatever MCP tool you were working on, now you’ve got to figure out tunneling, infra, or weird gNAT issues when you are just trying to hack. Hosted Clusters in Pomerium Zero (beta) Today we shipped Hosted Clusters in Pomerium Zero — our first hosted data plane — built for remote MCP servers . If you’ve got SSH (and you do), just type In the terminal from the machine where your MCP server is listening. Sign in, and Pomerium hands you a public HTTPS URL that forwards back to your localhost over an SSH reverse tunnel . No public NAT? No problem. Now ChatGPT, Gemini, Claude — anything that can hit an MCP endpoint — can reach the MCP server you’re hacking on without you needing to deploy infra. What this saves you from This replaces the whole “I just need a URL” dance: no tunnel or VPN client to install (vs ngrok, funnels, Cloudflare Tunnel, etc.) no TLS setup no fiddling with ephemeral URLs you still get sign-in + policy (the way Pomerium works), instead of “here’s a public URL, hope nothing weird happens” Best of all, it’s just SSH. And you’ve already got it. What I’ve been using it for I’ve been testing a little SQLite MCP server locally. Tools like list_tables , query , that kind of thing. Now the flow is: run the server ssh -R 0 pom.run paste the HTTPS URL into ChatGPT’s Apps SDK ( here’s a template ) ask ChatGPT to call a tool it hits my laptop immediately That’s it. MCP dev loop stays tight and light. Try it Hosted clusters are now live for everyone in Pomerium Zero .  Right now these tunnels are MCP-only. We want this specific workflow to feel great before we broaden it. So give us feedback (feedback@pomerium.com). docs: https://www.pomerium.com/docs/guides/local-mcp template for ChatGPT apps SDK: https://github.com/pomerium/chatgpt-app-typescript-template Happy hacking this holiday season 🎄, Bobby