How it works

Set it up once, then just tell Claude what you ate.

  1. Create your account

    Open the Fettle app, sign up with your email, and answer a few questions so it can work out your daily targets.

  2. Copy your connector link

    In the app, go to Settings, then Claude, and tap Copy. The link is the same every time.

  3. Add it in Claude

    In Claude, open Settings, then Connectors, then Add custom connector, and paste the link.

  4. Sign in and allow

    Sign in with the same email and password as the app and choose Allow. The app’s Claude screen switches to “connected”.

  5. Tell Claude what you ate

    Say something like “a bowl of oats with milk and a banana for breakfast”. It appears in your log within seconds. Review it, and edit anything that is off.

Good to know

  • Calories and macros are estimates worked out by your assistant. Edit any entry in the app.
  • Other assistants that support custom connectors may work with the same link. Claude is the one supported today.
  • You can disconnect from the app at any time, and the assistant loses access immediately.

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