Guide

Use Bellows with Claude

The Bellows connector lets Claude read your training and, with your go-ahead, plan and change it. You sign in to Bellows to allow it, every change is labeled, and you can undo any of them.

Before You Start

• A Bellows account. Bellows is for adults 18 and older in the United States, and it's free while it's in testing.
• Claude on the web, the desktop app or the mobile app.

Connect

1. In Claude, open Settings → Connectors. Find Bellows in the list and choose Connect. If it isn't listed for you yet, choose Add Custom Connector, name it Bellows, and use this address: https://etcgzvldgdnjynyfmgkw.supabase.co/functions/v1/mcp
2. Sign in to Bellows. Use the email on your Bellows account: Bellows emails you a 6-digit code. If you made your account with Sign in with Apple, use Sign in with Apple on that page.
3. Allow Claude. Bellows shows what Claude will be able to do. Choose Allow. You can disconnect at any time in Bellows under You → AI Connection.
4. Start a chat. Ask "What did I train this week?" or "Build me four weeks of upper/lower with two easy runs a week."

What Claude Can Do

• Read: your profile and units, workouts and their sets, routines, your calendar, training blocks, gear, gyms, routes, habits, pace zones, muscle recovery, and what training partners chose to share with you.
• Plan and change: routines, calendar sessions, training blocks, a workout you forgot to log or a mistake in one, gear, habits, private routes and your app settings (units, voice cues and the like).
• Bring in history: workouts from another app's export, a spreadsheet or photos of a logbook, after showing you a summary.

What Claude Can't Do

• Change your privacy or health data choices, its own approval setting or go-ahead word, your name or photo, or your partner and sharing settings.
• Make up activity, set personal records with workouts it added, or change recorded data like routes, heart rate or splits.
• Share or publish a route, send messages or reminders to anyone, or see anyone's live location.

You Stay in Charge

• Your go-ahead word. Claude lists what it will change and waits for your word ("go", unless you pick another in Bellows).
• Approvals in the app. In You → AI Connection, choose whether every change waits for you on Today, only big ones, or none.
• Labeled and undoable. You → AI Connection → AI Activity lists each change Claude made, newest first, and takes any of them back. Claude can also undo a change when you ask.

AI can make mistakes. Bellows tells Claude to build load gradually and to answer only from your records, but check a plan before you train it. Bellows and Claude offer training information, not medical advice.

Your Data

• Claude sees your Bellows data only after you sign in and allow it, and only for your account.
• Health details (birth year, sex, height and weight) reach Claude only if you agreed to save health data and allowed connected AIs to read it.
• What you share in a chat is handled under your agreement with Anthropic. Check your Claude privacy settings, such as whether chats are used to improve models.
• Bellows doesn't sell your data or use it for ads. Read the Privacy Policy and the Consumer Health Data Policy.

Disconnect

In Bellows, go to You → AI Connection and disconnect Claude; it loses access at once. You can also remove the connector in Claude's settings.

Help

Email contact@bellowsfitness.com, or use Send Feedback in the app under You.

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