MuscleLab

MuscleLab × AI

Your training.Your AI assistant.

Give your assistant the context behind your workouts. Explore your progress together and bring your next routine back to MuscleLab.

How to connectSee what to ask

Your conversations stay in the assistant you choose.

The contextMUSCLELAB

Your MuscleLab training log

  • Completed workouts
  • Exercises & sets
  • Your templates

The conversation

Your AI assistant

An example of what you can ask

“Look at my last eight weeks of training. What has changed, and what should we discuss?”

Discuss together. Save a template. Train in MuscleLab.

  • Understand your history

    Review your sessions, exercise choices, and changes in weights and reps over time.

  • Think through your routine

    Discuss your goals and available equipment using exercises from the MuscleLab catalog.

  • Bring the plan back

    Ask your assistant to create or adjust a workout template. Open it in MuscleLab for your next session.

The setup

Connect once. Keep the conversation going.

Choose where you want to talk about your training. Setup options depend on your assistant and account.

  1. Add MuscleLab to ChatGPT

    In ChatGPT, open Settings → Security and login and enable Developer mode. Open Plugins, select +, enter MuscleLab and a short description, then use the server URL below for the public connection. Create the connection and follow the sign-in prompts.

    MCP server URL

    https://api.musclelab.app/mcp

    Use this address in the connection settings of your assistant.

    This manual setup requires Developer mode. Its availability depends on your account and workspace policy. If the option is missing, check the official guide.

    ChatGPT connection guide

  2. Approve in MuscleLab

    On a computer: scan the QR code on the connection page with your phone.

    On your phone: tap “Open MuscleLab” on the connection page.

    Check the account, client, and matching code. Read what your assistant will be able to do, then tap “Code matches — allow access”. This confirms the entire connection. Keep the original browser window open.

  3. Return to your assistant

    Wait for the connection to finish in the window where you started. Open a new conversation, enable MuscleLab in its tools, and try a prompt below.

Something didn’t connect? Get help

Your first conversation

Start with a good question.

Copy a prompt into your assistant after connecting MuscleLab.

  • Review your progress

    Review my MuscleLab workouts from the last eight weeks. Compare weights, reps, and consistency. Explain what the history shows and where there isn’t enough data.

  • Explore your balance

    Look at which muscles my MuscleLab workouts covered over the last month. Which got less attention? Ask about my goal before suggesting changes.

  • Adapt a template

    Show my MuscleLab templates and help me adapt one for dumbbells and bodyweight. Use exercises from the catalog. Show me the changes and wait for me to ask you to save.

Your data & access

You choose who gets access.

Approving a connection gives that assistant all the capabilities listed below for your account.

  • What your assistant can read

    It can check the connection, identify your connected MuscleLab profile, and read your completed workout history and templates, plus the muscle and exercise catalogs.

  • What your assistant can change

    It can create, edit, and delete your templates. Ask for changes in the chat. MuscleLab does not ask you to approve each change again in the app.

  • How to disconnect

    Open Profile → MCP connections in MuscleLab and revoke access for that assistant. Other connections keep working.

Revoking access stops new requests. Data already shared in a conversation remains subject to your assistant’s data policies.

A few useful details.

Do I need to know what MCP is?

MCP is the connection that lets your assistant work with MuscleLab. Follow the steps above: add the server address and approve access in the app. No need to copy a password or token into a chat.

Is there a new AI chat inside MuscleLab?

The conversation happens in your external assistant. MuscleLab provides your training data and saves templates. You keep logging your workouts in the app as usual.

Will it save sets, reps, and target weights?

Templates save the exercise list, its order, supersets, and circuits. Planned sets, reps, weights, and the assistant’s explanations stay in your conversation.

What if the connection fails or expires?

Check your internet connection and make sure you are signed in to MuscleLab with a completed profile. If you had to sign in, open the app link again. If the request expired, start the connection again from your assistant. Keep the original browser window open until it finishes.

Why does the app offer to restore a connection?

You have already approved this connection. Check your account and the matching code, then confirm the restore in MuscleLab. Restoring only completes sign-in. If the assistant still has no access, revoke its connection in Profile → MCP connections and connect again.

Can my assistant change past workouts or see photos?

This connection covers completed workout history, catalogs, and templates. It cannot edit or delete past workouts, view progress photos or body measurements, or access another person’s training data.