Your wellbeing, in Claude's hands

Eir gives Claude your Garmin and Withings data, your daily check-ins and the practices you want to keep up, so it can coach you on recovery and habits, not streaks and scores.

Connect Eir to Claude

Add this URL as an MCP connector in Claude Desktop or Claude Code. You'll be asked to sign in and authorize.

https://eir.firestack.dev/mcp

Open Claude's connector settings

Without VIP access the connection succeeds but every tool call fails with a permission error.

Garmin data

Sleep, HRV, activities, training load and body battery, read live from Garmin Connect.

Withings scale

Weight, fat, muscle, hydration and bone mass, read-only through Withings OAuth.

Check-ins

"Morning: slept badly, legs heavy." Saved as a note for the day, next to your data.

Virtues

The practices you want to keep up, Benjamin Franklin style. Mark them whenever.

Weekly review

"How did my week go?" picks one virtue to focus on next week, without dropping the rest.

Patterns

"Do late evenings show in my HRV?" compares the mornings after days you did and didn't.

Using Eir with Claude

No instructions to paste: Eir tells Claude how to coach. Just talk to it.

Check in any time: "Morning check-in: slept badly, legs heavy" or "Evening: good day, calm". Claude saves it as a note for the day and looks at your Garmin data where it helps.
Virtues are the practices you want to keep up: "Add a virtue: no screens after 22, daily". Mark them whenever: "Mark my virtues for today".
Weekly review: "How did my week go?" picks one virtue to focus on next week.
Patterns: "Do late evenings show in my HRV?" compares your Garmin data on the mornings after days you did and didn't.

The first time, Claude asks how you want to be coached (well-being or performance, who else it's for) and remembers it. Your Garmin password never enters Claude's conversation: you connect it here, on Eir's own site.