Quantified Self MCP server

This is a small helper that connects your AI to your personal health data, kept in a file on your own computer. You can ask questions about your sleep, heart rate, steps, weight and more, and the AI looks up the answers for you. It is handy if you track your health and want to understand your own numbers without sending them to a company.

What this MCP server does

You ask your AI a question about your health, like how your sleep changed this month. The AI sends that question to this helper program. The helper looks through your health data, which sits in a file on your computer. It finds the numbers and does the math, then hands the results back to the AI. The AI turns that into a plain answer for you, and it also tells you how solid the answer is based on how much data you actually logged.

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What you can do with it

• Look up your recent health metrics like steps, sleep, heart rate and weight
• Show how a metric has changed over the last week, month or year
• Compare two periods, like this month against last month
• Spot unusual days or values in your history
• Find patterns between two metrics, like sleep and resting heart rate
• Explain what changed recently and why
• Import your existing history from a CSV file or an Apple Health export

Try asking your AI

• “How has my sleep changed over the last 30 days?”
• “Why did my HRV change recently?”
• “What happened to my resting heart rate after my workouts increased?”
• “Which metrics changed the most this month?”

What it gives back to you

You get a written answer in the chat, with the numbers behind it. For example, it might say your HRV dropped 24 percent over 30 days. Along with that, it tells you how much data was actually logged and how confident you should be in the result. If your data has gaps, it will say so instead of pretending the answer is exact.

Before you start

Who it's for

People who track their own health and want to ask an AI questions about their personal data without sending it to a cloud service.