Derny › AI workouts

AI workouts

Describe the workout. Your AI builds it in Derny.

Derny connects to your own Claude or ChatGPT as a custom connector. Ask for a workout in plain words and it appears in your Derny library, ready to ride, with heart-rate rules included if you ask for them.

What you can ask

Talk about the session, not the file format.

“Make me a 60-minute sweet-spot ride that backs off when my heart rate climbs above 165.”

“Build a 40-minute treadmill run: easy warm-up, then four hard intervals with easy jogs between them.”

“Take my Tuesday intervals and make every recovery a minute longer.”

Your AI can create, list, read, edit and delete the workouts in your Derny library. It can’t see your recorded rides, and it can’t control your trainer or treadmill. You ride the workout in the Derny app like any other.

Set it up

Connect once, in about a minute.

  1. Sign in to Derny in the app. Your workouts need an account to sync to.
  2. In Claude or ChatGPT, add a custom connector and paste this URL: https://mcp.derny.app/mcp
  3. Sign in to Derny when asked, and approve the connection.
  4. Ask for a workout. It shows up in your Derny library.

Custom connectors need a paid plan: Claude Pro or Max, or a paid ChatGPT plan. The URL is also in the app under Settings → Connected Apps.

Access

You stay in charge of what it can touch.

The connection uses OAuth: you approve it on a Derny sign-in screen, and your AI never sees your password. Every connected app is listed in Settings → Connected Apps. Disconnecting one revokes its access immediately.

Questions people ask

AI questions

Can ChatGPT or Claude create workouts for my smart trainer?

Yes, through Derny. Add Derny as a custom connector in Claude or ChatGPT using https://mcp.derny.app/mcp, sign in to approve it, then ask for a workout. It appears in your Derny library, ready to ride on a smart trainer, treadmill or elliptical.

What can the AI see in my Derny account?

Only your workouts. It can create, list, read, edit and delete them. It can’t see your recorded rides and can’t control your machine.

Do I need a paid AI plan?

Custom connectors need a paid plan: Claude Pro or Max, or a paid ChatGPT plan. Derny itself is free while in beta.

How do I disconnect my AI from Derny?

Open Settings → Connected Apps in Derny and disconnect it. Its access is revoked immediately.

Try it

Free while in beta, on iPhone and Android.

The beta is live on iPhone through TestFlight and on Android through Google Play. Your invite arrives by email.

Get the beta invite → Back to derny.app