Cronometer Api Mcp
Connects to Cronometer's mobile REST API (the same endpoints the Android app uses) to expose nutrition tracking operations through MCP tools. You get diary reads with meal breakdowns, daily macro and micronutrient totals, nutrition confidence scores, food database search, and write operations like logging servings or creating custom foods. Also surfaces fasting history and macro target schedules. Built by reverse engineering the mobile API via static analysis and traffic interception, so it works with clean JSON payloads instead of the web app's GWT-RPC protocol. Useful when you want Claude to log meals, analyze nutrition patterns, or pull historical tracking data without switching to the Cronometer UI.
- GitHub stars
- 70
- tools
- 19
- auth
- Secret needed
- transport
- STDIO
- env vars
- 4
- last updated
- Oct 13, 2026
Tools
19 toolsPublic tool metadata for what this MCP can expose to an agent.
get_food_logDiary 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 (target/consumed/remaining kcal) and a nutrition_summary of consumed totals for every tracked nutrient
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 (target/consumed/remaining kcal) and a nutrition_summary of consumed totals for every tracked nutrient
No parameter schema in public metadata yet.
get_daily_nutritionConsumed macro and micronutrient totals for every nutrient tracked in Cronometer
Consumed macro and micronutrient totals for every nutrient tracked in Cronometer
No parameter schema in public metadata yet.
get_nutrition_scoresCategory scores (Vitamins, Minerals, etc.) with per-nutrient consumed amounts and confidence levels
Category scores (Vitamins, Minerals, etc.) with per-nutrient consumed amounts and confidence levels
No parameter schema in public metadata yet.
search_foodsSearch the Cronometer food database by name
Search the Cronometer food database by name
No parameter schema in public metadata yet.
get_food_detailsFull nutrition profile and serving sizes for a food
Full nutrition profile and serving sizes for a food
No parameter schema in public metadata yet.
add_food_entryLog a food serving to the diary
Log a food serving to the diary
No parameter schema in public metadata yet.
remove_food_entryRemove one or more diary entries
Remove one or more diary entries
No parameter schema in public metadata yet.
add_custom_foodCreate a custom food with specified nutrition and optional barcodes
Create a custom food with specified nutrition and optional barcodes
No parameter schema in public metadata yet.
update_custom_foodEdit a custom food in place: name, nutrition, serving size, or barcodes
Edit a custom food in place: name, nutrition, serving size, or barcodes
No parameter schema in public metadata yet.
delete_custom_foodRetire a custom food so it leaves search and the Custom Foods list (existing diary entries are kept)
Retire a custom food so it leaves search and the Custom Foods list (existing diary entries are kept)
No parameter schema in public metadata yet.
add_recipeCreate a recipe from existing foods referenced by ID and gram weight
Create a recipe from existing foods referenced by ID and gram weight
No parameter schema in public metadata yet.
import_recipeCreate a recipe from a free-text ingredient list; Cronometer matches each line to a database food and converts the amount to grams
Create a recipe from a free-text ingredient list; Cronometer matches each line to a database food and converts the amount to grams
No parameter schema in public metadata yet.
copy_dayCopy all entries from the previous day
Copy all entries from the previous day
No parameter schema in public metadata yet.
mark_day_completeMark a diary day as complete or incomplete
Mark a diary day as complete or incomplete
No parameter schema in public metadata yet.
get_macro_targetsWeekly macro schedule and saved target templates
Weekly macro schedule and saved target templates
No parameter schema in public metadata yet.
get_fasting_historyFasting history within a date range
Fasting history within a date range
No parameter schema in public metadata yet.
get_fasting_statsAggregate fasting statistics
Aggregate fasting statistics
No parameter schema in public metadata yet.
list_biometricsList trackable biometric metrics and their units
List trackable biometric metrics and their units
No parameter schema in public metadata yet.
get_biometricsBiometric time series (e.g. weight, body fat) within a date range
Biometric time series (e.g. weight, body fat) within a date range
No parameter schema in public metadata yet.
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CRONOMETER_USERNAME*Your Cronometer account email
CRONOMETER_PASSWORD*secretYour Cronometer account password
CRONOMETER_TOTP_SECRETsecretBase32 key for accounts with two-factor authentication
CRONOMETER_ACCOUNT_TZOptional IANA timezone override, for example America/Los_Angeles
Readme
cronometer-api-mcp
Hosted version for Claude.ai, ChatGPT, and Grok coming soon. Join the waitlist →
An MCP (Model Context Protocol) server for Cronometer nutrition tracking, built on the reverse-engineered mobile REST API.
Details
- Repository
- github.com/rwestergren/cronometer-api-mcp
- Package
cronometer-api-mcp- Transport
- STDIO
- Auth
- Required
- Registry
- MCP registry, active