Overview
The Caliber MCP Server gives AI assistants read-only access to your fitness and nutrition data. Once connected, you can ask questions about your workouts, nutrition, body stats, and more — and get charts, summaries, and trend analysis powered by your real Caliber data.
What You Can Do
- Analyze exercise progress — See how your lifts have changed over time with visual charts and breakdowns
- Review nutrition — Check whether you're hitting your calorie and macro targets
- Track body stats — Visualize trends in your weight, body fat, and other measurements
- Check personal records — Look up your all-time bests for any exercise
- Get training summaries — Ask for a recap of your week, month, or any date range
- Browse exercises — Search Caliber's exercise library by name, muscle group, or equipment type
- View cardio and steps — See your cardio activities and daily step counts
All access is read-only — the MCP server can surface your data but cannot create, modify, or delete anything in your Caliber account.
Available Tools
| Tool | Description |
|---|---|
| Search exercises | Search the exercise library by name with optional muscle group and equipment filters |
| Get workouts | Retrieve completed workouts within a date range, including exercises, sets, reps, and weights |
| Get body stats | Retrieve body measurements (weight, body fat, waist) within a date range |
| Get steps | Retrieve daily step count data within a date range |
| Get nutrition | Retrieve daily nutrition data (calories, protein, carbs, fat) within a date range |
| Get nutrition targets | Retrieve current nutrition targets including daily macro goals and 7-day averages |
| Get workout plans | Retrieve all workout plans with templates, exercises, and programming targets |
| Get exercise sessions | Retrieve completed sessions for a specific exercise with sets, reps, and weights |
| Get cardio activities | Retrieve cardio activities (manual and imported) with distance, time, and heart rate |
| Get personal records | Retrieve all-time personal records for an exercise (max weight, 1RM, volume, reps) |
| Get unit preferences | Retrieve the user's preferred units for weight, distance, and body measurements |
| Get calendar overview | Retrieve a lightweight day-by-day view of workouts, nutrition, and other tracked items |
Example Prompts
Here are some things you can ask once Caliber is connected:
| What you want | Try asking |
|---|---|
| Exercise progress | "How has my bench press progressed over the last 3 months?" |
| Nutrition check | "Am I hitting my protein targets this week?" |
| Weekly summary | "Give me a summary of everything I did last week" |
| Body stat trends | "Chart my weight over the past 6 months" |
| Personal records | "What are my PRs for squat?" |
| Exercise search | "What dumbbell exercises does Caliber have for chest?" |
| Cardio overview | "Show me my cardio activities from this month" |
| Step counts | "How many steps have I been averaging this week?" |
You can ask follow-up questions, request different date ranges, or ask for your data to be visualized in different ways.
Getting Connected
To connect the Caliber MCP Server to your AI client, you'll need the following details:
| Setting | Value |
|---|---|
| MCP Server URL | https://api.caliberstrong.com/mcp |
| Authentication | OAuth 2.0 |
| OAuth Client ID | caliber-mcp |
| OAuth Client Secret | Leave blank |
The exact setup steps will vary depending on your AI client. Generally, you'll need to add a new MCP server connection, enter the URL and OAuth details above, and then sign in with your Caliber account when prompted.
Requirements
- A Caliber account with an active subscription
- An MCP-compatible AI client (currently supported: Claude and ChatGPT)
Data & Privacy
- The server can only access your own Caliber data — no one else's
- All access is read-only — nothing in your Caliber account can be changed through the MCP server
- You can disconnect at any time
- All measurements are automatically converted to your preferred units (metric or imperial)
For more details, see our Privacy Policy.
Troubleshooting
The AI can't access my data
Try disconnecting and reconnecting the Caliber integration. Make sure you're signed into the correct Caliber account.
Data is showing in the wrong units
The MCP server respects your unit preferences in Caliber. Check your unit settings in the Caliber app to make sure they're set correctly.
Support
If you're having trouble with the Caliber MCP Server, reach out to us:
- Email: support@caliberstrong.com
- Website: caliberstrong.com