Connect JustLog to ChatGPT

JustLog works as an MCP server that connects directly to ChatGPT. Follow these steps to set it up.

Requires ChatGPT Pro, Team, Enterprise, or Edu. Developer mode is not available on the free plan.

1. Enable Developer Mode

In ChatGPT, go to Settings → Apps & Connectors → Advanced settings and toggle Developer mode on.

2. Add JustLog as a Connector

  1. In Settings, click Apps & Connectors
  2. Click Create
  3. Fill in the fields:
    • Name: JustLog
    • Description: Track food, exercise & weight
    • MCP Server URL:
  4. Set Authentication to OAuth
  5. Leave Client ID and Client Secret blank
  6. Check the acknowledgment box and click Create

3. Sign In

Start a new conversation in ChatGPT and select JustLog from the tools menu. The first time you use it, ChatGPT will redirect you to sign in with your JustLog account. After signing in, you're all set.

4. Start Logging

Just talk naturally. Try things like:

  • "I had 2 eggs and toast for breakfast"
  • "I went for a 30 minute run"
  • "I weigh 185 lbs"
  • "What have I eaten today?"
  • "How many calories this week?"