The Easiest Way to Connect Your Garmin to Claude or ChatGPT

Connect your Garmin to Claude or ChatGPT

Can you actually connect your Garmin to an AI assistant? Yes, and someone already built the easy version.

MissingMCP is a free, open-source gateway between your Garmin Connect account and an AI assistant. It uses MCP (Model Context Protocol), the open standard that both Claude and ChatGPT support for plugging in outside data. It's hosted, so there's no terminal, no install and no code.

The same URL works in both apps:

https://missingmcp.com/garmin/mcp

Setup in Claude

1. Go to Customize → Connectors
2. Click + Add → Add custom connector
3. Name it "Garmin", paste the URL above and click Continue. Leave the other options as they are and click Add
4. Sign in with your Garmin Connect account when prompted
5. In a chat, open the + menu → Connectors and make sure Garmin is switched on

Custom connectors work on every Claude plan, including Free (where you get one custom connector). Once it's added, it works in Claude on the web, on desktop and in the mobile app.

Setup in ChatGPT

1. On the web, go to Settings → Apps → Advanced settings and turn on Developer mode
2. Choose Create app, name it "Garmin" and paste the URL above as the server URL
3. Pick OAuth as the authentication and create the app
4. Sign in with your Garmin Connect account when prompted. If you close the tab halfway through, remove the app and add it again
5. In a new chat, open the + menu and enable the Garmin app for that conversation

Developer mode is available on the Plus, Pro, Business, Enterprise and Education plans, not on Free. Custom connectors are still a beta feature in ChatGPT and can only be added on the web for now. OpenAI also moves these menus around now and then: if you can't find them, look for Apps, Connectors or Developer mode in Settings.

Is it safe?

No hacker wizardry. Your Garmin password is used once to sign in and then discarded, only encrypted tokens are kept, and the entire project is open source if you want to check for yourself.

The connector can also make changes, like putting a workout on your Garmin calendar or logging a weigh-in. Your assistant asks before it uses those tools, so read what it wants to do before you approve it.

What you can ask once it's connected

Once the connector is live, Claude or ChatGPT can read your training and health history whenever you ask it something. A few that are genuinely useful:

• "Build me a training schedule to hit [goal] by [date], based on where my data actually shows I am right now"
• "Analyse my sleep over the last two weeks: what's actually driving the bad nights?"
• "How has my resting heart rate trended over the last month, and does it line up with my training load?"
• "Am I overtraining based on the last two weeks?"
• "Put next week's runs from that plan on my Garmin calendar"

The difference with asking a generic health question is that every answer is grounded in your actual numbers, not a generic template.

One thing worth setting up next

In Claude, the same connection can also run automatically as a scheduled task, not just when you ask. I use it every morning to catch early illness signals before I feel them. The full prompt is here:

Claude checks my Garmin every morning →

Support the person who built this

This is free, open source, and maintained by one person. If you end up using it regularly, buy them a coffee. Tools like this only keep existing when the people using them chip in.

Prefer running it locally instead of the hosted version? There's a different setup for that, using a local server through Claude Desktop:

The local MCP setup →