Cronometer API MCP

An MCP (Model Context Protocol) server for Cronometer nutrition tracking, built on the reverse-engineered mobile REST API. Its 19 documented tools cover food, custom, nutrition, recipe. It runs locally over stdio via the published package.

People who work with food, custom and nutrition and want it reachable from Claude, Cursor, VS Code, or another MCP client. The project is written in Python.

VERIFIED ACTIVE

LAST COMMIT 2026-09-17 · ★ 52 · #23 OF 278 MAINTAINED API INTEGRATION · VERIFIED 2026-09-18

MIT · Python servers · how we verify → /methodology

01 · Install Cronometer API MCP

before you install - you'll need

Set CRONOMETER_USERNAME, CRONOMETER_PASSWORD, CRONOMETER_TOTP_SECRET, CRONOMETER_ACCOUNT_TZ before connecting.

Claude Code

claude mcp add rwestergren-cronometer-api-mcp -- uvx cronometer-api-mcp

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "rwestergren-cronometer-api-mcp": {
      "command": "uvx",
      "args": [
        "cronometer-api-mcp"
      ]
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions

license MIT - declared in the repository

pypi package cronometer-api-mcp - check the name against the project README before installing (PyPI has no namespace ownership)

registry namespace io.github.rwestergren is GitHub-verified and matches the repo owner

03 · What Cronometer API MCP can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

What you can build

With this server connected, an agent can search the Cronometer food database by name, log a food serving to the diary, remove one or more diary entries, and create a custom food with specified nutrition.

Capability map

Tools grouped from the project's README - what Cronometer API MCP lets an agent do.

Food

7 tools - e.g. Diary entries for a date, each enriched with food name, source, serving measure/count, and that food's per-entry nutrient contribution, plus an energy_summary (; Full nutrition profile and serving sizes…

get_food_log · get_food_details · add_food_entry · remove_food_entry · add_custom_food · update_custom_food…

read & search

4 tools - e.g. Consumed macro and micronutrient totals for every nutrient tracked in Cronometer; Category scores (Vitamins, Minerals, etc.) with per-nutrient consumed amounts and confidence levels; Search the Cronometer…

get_daily_nutrition · get_nutrition_scores · search_foods · get_macro_targets

Fasting

2 tools - e.g. Fasting history within a date range; Aggregate fasting statistics

get_fasting_history · get_fasting_stats

Biometrics

2 tools - e.g. List trackable biometric metrics and their units; Biometric time series (e.g. weight, body fat) within a date range

list_biometrics · get_biometrics

create & write

1 tool - e.g. Create a recipe from existing foods referenced by ID and gram weight

add_recipe

Import

1 tool - e.g. Create a recipe from a free-text ingredient list; Cronometer matches each line to a database food and converts the amount to grams

import_recipe

Copy

1 tool - e.g. Copy all entries from the previous day

copy_day

Mark

1 tool - e.g. Mark a diary day as complete or incomplete

mark_day_complete

Latest releases

v0.2.3 · 2026-09-07

v0.2.2 · 2026-08-30

v0.2.1 · 2026-08-09

04 · Who maintains Cronometer API MCP

cronometer-api-mcp is maintained by rwestergren. We track 4 MCP servers from rwestergren - 4 actively maintained, 68 combined GitHub stars, oldest repo from Apr 2026. Full record: all servers from rwestergren.

05 · Facts

repository: github.com/rwestergren/cronometer-api-mcp
category: API integration - ranked #23 of 278 actively-maintained API integration servers as of 2026-09-18.
release cadence: 9 releases in the last 90 days (latest 2026-09-07)
registry: io.github.rwestergren/cronometer-api-mcp (active, first published 2026-04-18 · 15 versions)
packages: pypi:cronometer-api-mcp

06 · Cronometer API MCP FAQ

Is Cronometer API MCP still maintained?

Yes - as of 2026-09-18, its last commit was 2026-09-17 and it shipped 9 releases in the last 90 days. We re-verify nightly.

What can Cronometer API MCP do?

How do I install Cronometer API MCP?

Run `uvx cronometer-api-mcp`. The README documents 4 environment variables (CRONOMETER_USERNAME, CRONOMETER_PASSWORD, CRONOMETER_TOTP_SECRET…) to set first. Set CRONOMETER_USERNAME, CRONOMETER_PASSWORD, CRONOMETER_TOTP_SECRET, CRONOMETER_ACCOUNT_TZ before connecting. You can also paste the ready-made client config above.

Does Cronometer API MCP run locally?

Yes - it's a stdio server: it runs on your machine (via uvx) with your user's permissions. Your data stays local unless the server itself calls external APIs.

07 · Alternatives to Cronometer API MCP

Alternatives to Cronometer API MCP

Maintained API integration servers if Cronometer API MCP isn't the fit.

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