Expose local MCP servers to ChatGPT securely via OpenAI's official tunnel — no auth or public URL needed

altryne · x · 2026-11-16

altryne shares a practical setup: run an MCP server on your LAN (e.g. a Mac mini), then expose it to ChatGPT via OpenAI's official tunnel — no public deployment, no custom auth, no exposed ports. Steps: install the client with brew install openai/tools/tunnel-client, create a tunnel ID, mint an API key with tunnels read/use scope, then run tunnel-client init with the MCP sample config to wire it up. Screenshots confirm ChatGPT's custom MCP dialog now supports Tunnel as a connection mode.

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