LiftBrain

Connect your AI coach

LiftBrain is the log; the coaching comes from your AI assistant. Connect them once and the assistant can write your program, read your workouts, food and recovery, and set the weights for your next session. Without this step the app stays empty.

The connector address (the same for every assistant):

https://liftbrain.online/mcp

When the assistant asks you to sign in, use the email and password of your LiftBrain account.

1. Create your account

Install LiftBrain on your phone and create an account with your email and a password.

2. Add the connector to your assistant

Claude (claude.ai, desktop and mobile apps)

  1. Open Settings → Connectors.
  2. Choose “Add custom connector”, name it LiftBrain and paste the address above.
  3. Press “Connect” and sign in with your LiftBrain account.
  4. In a chat, make sure the LiftBrain connector is switched on (the tools menu under the message box).

A connector added on claude.ai also works in the Claude apps on your phone and computer.

ChatGPT

  1. Open Settings → Apps & Connectors (on some plans you first turn on developer mode under Advanced).
  2. Create a custom connector, name it LiftBrain and paste the address above; authentication: OAuth.
  3. Sign in with your LiftBrain account when ChatGPT opens the sign-in page.
  4. In a chat, add the LiftBrain connector from the tools menu.

Gemini

In Gemini CLI, add the server to ~/.gemini/settings.json and sign in when asked (or with /mcp auth liftbrain):

{
  "mcpServers": {
    "liftbrain": { "httpUrl": "https://liftbrain.online/mcp" }
  }
}

Any other assistant

Any app that can add a remote MCP server (Streamable HTTP with OAuth sign-in) works: add https://liftbrain.online/mcp and sign in with your LiftBrain account. Menus change between versions; look for “connectors”, “MCP servers” or “tools”.

3. Ask for a program

For example:

“Make me a 3-day strength program. I train Mon/Wed/Fri for 60 minutes in a full gym. My goal is a stronger squat and losing a little fat.”

The program appears in the app. After a few workouts ask: “Look at my last two weeks and set the weights for my next workout.” Photos of meals you take in the app wait for the assistant: ask it to “look at my food photos”.

Trouble?

Write to support@liftbrain.online and tell us which assistant you use.