Everything your watch knows — training, sleep, recovery, health — in a ChatGPT conversation. Same free, hosted Garmin MCP server that powers the Claude connector; ChatGPT just needs a couple of different menu clicks to add it.
https://garmin-mcp.xtr.cc/garmin/mcp
Garmin Connect collects an enormous amount of data about you — but exploring it means tapping through app screens, one metric at a time. This plugs your Garmin account straight into ChatGPT, so you can just ask: “How did I sleep this week?”, “Compare my last three long runs”, “Why is my training readiness low today?” Under the hood it’s a hosted MCP (Model Context Protocol) server — the open standard ChatGPT, Claude, and most AI apps now speak.
All 134 tools — activities, sleep, HRV, training readiness, body composition, race predictions, even building workouts and scheduling them onto your watch — work exactly the same as in Claude. The full list lives on the Garmin connector page.
In ChatGPT on the web: Settings → Apps → Advanced settings → toggle Developer mode on. It’s available on Plus, Pro, Business, Enterprise, and Education plans.
Choose Create app (custom connector), name it “Garmin”, and paste https://garmin-mcp.xtr.cc as the server URL. Pick OAuth as the authentication.
ChatGPT opens a sign-in page — enter your Garmin Connect email and password (and an MFA code if prompted). If you close the tab mid-flow, remove the app and add it again to restart cleanly.
Enable the app in a conversation and try “How did I sleep last night?” ChatGPT asks for confirmation before any tool that writes to your Garmin calendar.
Free to use — if it earns a spot in your routine, buy me a beer to keep it running.
Prompts that show what ChatGPT can do with your real Garmin data.
“Summarize my training week: volume, intensity, sleep quality, and how my body handled the load. What should I change next week?”
“Build me a 3-run week targeting a sub-50 10k — base it on my recent training load and schedule the workouts to my watch.”
“Look at the last month: which habits correlate with my worst sleep scores — late workouts, stress peaks, anything else?”
MCP is an open standard, and this gateway speaks it by the book — OAuth 2.1 with PKCE, dynamic client registration, Streamable HTTP. That’s why the same URL works in ChatGPT, Claude, Codex, and any other MCP-capable client without any per-app setup on this side. The whole gateway is open source (GitHub, MIT) and self-hostable; the Garmin smarts come from the unmodified open-source garmin_mcp server.
Prefer Claude? The Garmin connector page has the Claude steps, the full 134-tool list, and everything else about this connector.