Cronometer MCP Server

MCP server for Cronometer — food logs, macros, and micronutrient tracking

Local serverstdioPython

What is the Cronometer MCP server?

If you already use Cronometer, the cronometer mcp server is the piece that lets your assistant work with it directly. MCP server for Cronometer — food logs, macros, and micronutrient tracking.

What the server does

Or add them to a .env file in your project root (if your MCP client supports it).

  • Food log — — individual food entries with full macro and micronutrient breakdown
  • Daily nutrition — — daily calorie, protein, carb, fat, and fiber totals
  • Micronutrients — — detailed vitamin/mineral breakdown with period averages
  • Diary management — — add/remove food entries, copy entire days, mark days complete
  • Recurring foods — — create, list, and delete repeat items that auto-log on selected days
  • Macro targets — — read/write daily targets, create templates, set weekly schedules

Installation

cronometer-mcp on PyPI is all you need. Most clients run it directly, so configuration is a few lines and a restart.

Available tools

The toolset is worth reading before you wire it up, because it tells you what the integration is really for:

  • Fasting — The Fasting tool exposed by this server
  • Biometrics — The Biometrics tool exposed by this server
  • Sync — The Sync tool exposed by this server

Credentials and setup notes

Configuration is passed through the environment: CRONOMETER_USERNAME, CRONOMETER_PASSWORD, CRONOMETER_DATA_DIR. Treat anything key-shaped as a real credential — scope it to the minimum the server needs, and rotate it if it ever lands in a shared config.

Worth knowing first

  • It runs with your machine's permissions. That is convenient and also the reason to think about what you point it at before you approve a tool call.
  • Keep per-call confirmation enabled while you learn its behaviour; it is the cheapest safeguard you have.

Where it fits

Plenty of monitoring and observability servers cover similar ground. The differences that matter in practice are scope of access and how much setup stands between you and a working tool call. Cronometer's toolset — Fasting, Biometrics, Sync — is a fair guide to whether it matches your workflow. It is maintained by cphoskins; worth a glance at recent repository activity before you build anything load-bearing on it.

We check each listing at SyncDev against the project's documentation before it goes live — if something here drifts out of date, it is a bug worth reporting.

Available tools

ToolWhat it does
FastingThe Fasting tool exposed by this server.
BiometricsThe Biometrics tool exposed by this server.
SyncThe Sync tool exposed by this server.

How to install the Cronometer MCP server

{
  "mcpServers": {
    "cronometer": {
      "command": "uvx",
      "args": ["cronometer-mcp"],
      "env": {
        "CRONOMETER_USERNAME": "your-value",
        "CRONOMETER_PASSWORD": "your-value",
        "CRONOMETER_DATA_DIR": "your-value"
      }
    }
  }
}

Add to claude_desktop_config.json, then restart Claude Desktop.

Configuration

VariableDescriptionRequired
CRONOMETER_USERNAMEConfiguration value read at startup.Optional
CRONOMETER_PASSWORDConfiguration value read at startup.Optional
CRONOMETER_DATA_DIRFilesystem location the server is allowed to use.Optional

Example prompts to try

  • Use Cronometer to Fasting.
  • Use Cronometer to Biometrics.
  • Use Cronometer to Sync.

Frequently asked questions

It connects Cronometer to MCP-compatible AI assistants such as Claude and Cursor, exposing 3 tools (Fasting, Biometrics, Sync) that the assistant can call on your behalf. Instead of copying data back and forth by hand, the assistant works with Cronometer directly.