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akutishevsky

Nutrition MCP

by akutishevsky
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TypeScript
Remote

Nutrition MCP

A remote MCP server for personal nutrition tracking — log meals with calories, macros, fiber and total sugar, log water and body weight, review nutrition history, and import an existing food diary from another app, all through conversation. Alcohol tracking is opt-in and off by default.

Help me pay for the servers on Patreon

Quick Start

Already hosted and ready to use — just connect it to your MCP client:

https://nutrition-mcp.com/mcp

On Claude.ai: Customize → Connectors → + → Add custom connector → paste the URL → Connect

On first connect you'll be asked to register with an email and password. Your data persists across reconnections.

Switching from another tracker? See the nutrition-app alternatives — how it compares to MyFitnessPal, Cronometer, Lose It!, MacroFactor, Yazio, and Lifesum. Bring your history with you: say "import my meals" and an importer opens in the chat, where you pick the CSV you exported from your old app, map its columns, and check what will be added before anything is saved. Exports from MyFitnessPal, Cronometer, Lose It! and MacroFactor are recognised automatically; any other CSV works by mapping its columns yourself. In clients that can't show in-chat panels, paste the export instead and the AI imports it for you. If your export has an alcohol column and you want it kept, turn alcohol tracking on before importing — the importer skips that column while tracking is off, and re-importing the same file later won't backfill it.

Related MCP server: nutrition-mcp

Demo

Demo

Read the story behind it: How I Replaced MyFitnessPal and Other Apps with a Single MCP Server

Tech Stack

  • Bun — runtime and package manager

  • Hono — HTTP framework

  • MCP SDK — Model Context Protocol over Streamable HTTP

  • Supabase — PostgreSQL database + user authentication

  • OAuth 2.0 — authentication for Claude.ai connectors

MCP Tools

Tool

Description

log_meal

Log a meal with description, type, calories, macros, fiber, total sugar, alcohol, notes — from text or a photo of your plate

start_meal_import

Open the in-chat CSV importer: pick an export from another app, map its columns, preview, confirm

bulk_import_meals

Write up to 50 imported rows per call — each row validated, duplicates skipped so a re-send is safe

lookup_barcode

Look up a packaged product's label nutrition by barcode via Open Food Facts (read from a photo or typed)

get_meals_today

Get all meals logged today

get_meals_by_date

Get meals for a specific date (YYYY-MM-DD)

get_meals_by_date_range

Get meals between two dates (inclusive)

search_meals

Search past meals by keyword, grouped into recurring variations (counts, last logged, typical macros)

get_nutrition_summary

Daily nutrition totals + goal progress for a date range

update_meal

Update any fields of an existing meal

delete_meal

Delete a meal by ID

set_nutrition_goals

Set daily calorie, macro, fiber and water targets to reach, sugar and alcohol limits to stay under, plus an optional target weight

get_nutrition_goals

Get the current daily targets and limits

get_goal_progress

Get intake vs. targets and limits for a given day (default: today), plus latest weight vs. target

log_water

Log a hydration entry in milliliters

get_water_today

Get today's water intake total and entries

get_water_by_date

Get water intake for a specific date

delete_water

Delete a water log entry by ID

log_weight

Log a body-weight measurement in kg or lb (converted and stored server-side)

get_weight_today

Get today's weight entries

get_weight_by_date

Get weight entries for a specific date

get_weight_by_date_range

Get weight entries between two dates (inclusive), grouped by day

get_weight_trends

Weight trend: latest, overall change, 7/14/30-day moving averages, min/max, and goal progress

update_weight

Update an existing weight entry

delete_weight

Delete a weight entry by ID

set_weight_unit

Set the preferred weight unit (kg or lb; null to clear)

get_weight_unit

Get the preferred weight unit

get_trends

7/14/30-day averages, std dev, streaks, day-of-week, best/worst day

get_meal_patterns

Pre-aggregated behavioural patterns (breakfast effect, late dinner, weekend vs weekday, outliers)

export_meals

Export all meals as a CSV and return a 60-minute download link

set_timezone

Set the user's IANA timezone (e.g. America/Los_Angeles)

get_timezone

Get the user's configured timezone

set_widget_display

Enable or disable the in-chat visual widgets (dashboards, rings, charts); enabled by default

get_widget_display

Get whether the in-chat visual widgets are enabled

set_alcohol_tracking

Turn alcohol tracking on or off (off by default) and choose US standard drinks or UK units; turning it off hides alcohol rather than deleting it

get_alcohol_tracking

Get whether alcohol tracking is on and which standard drink it's displayed in

delete_account

Permanently delete account and all associated data

MCP Resources

URI

Description

nutrition://weekly-summary

Rolling 7-day digest (averages vs targets, best/roughest day) for proactive pulls

Self-hosting

1. Supabase setup

  1. Create a Supabase project.

  2. Enable Email Auth (Authentication → Providers → Email) and disable email confirmation.

  3. Apply the schema. The full schema lives in supabase/migrations/. With the Supabase CLI:

    supabase link --project-ref <your-project-ref>
supabase db push

    This creates every table, index, RLS policy, and foreign key the app needs. No local Postgres is involved — migrations run against your hosted project.

  4. Copy the service role key from Project Settings → API and use it as SUPABASE_SECRET_KEY.

2. Environment variables

Variable

Description

SUPABASE_URL

Your Supabase project URL

SUPABASE_SECRET_KEY

Supabase service role key (bypasses RLS)

OAUTH_CLIENT_ID

Random string for OAuth client identification

OAUTH_CLIENT_SECRET

Random string for OAuth client authentication

GOOGLE_CLIENT_ID

(optional) Google OAuth client ID for "Sign in with Google"

GOOGLE_CLIENT_SECRET

(optional) Google OAuth client secret

OFF_USER_AGENT

Open Food Facts User-Agent for barcode lookups, in the form AppName (email)

PORT

Server port (default: 8080)

Making it yours: The public site includes the maintainer's personal bits — Google Analytics, Patreon/GitHub/contact links, and the nutrition-mcp.com domain. Run bun run depersonalize to strip them all in one pass (analytics + CSP, the Support/Contact sections, social links, and the domain → a your-domain.com placeholder). Use bun run depersonalize --dry to preview without writing. Afterwards, swap in your own public/og.png, favicon.ico, and apple-touch-icon.png, and replace the domain placeholder with your real domain.

Generate OAuth credentials:

openssl rand -hex 16   # use as OAUTH_CLIENT_ID
openssl rand -hex 32   # use as OAUTH_CLIENT_SECRET

3. Google sign-in (optional)

Email/password works out of the box. To also offer "Continue with Google", follow docs/google-auth-setup.md to create a Google OAuth client, enable the Google provider in Supabase, and set GOOGLE_CLIENT_ID / GOOGLE_CLIENT_SECRET.

Development

bun install
cp .env.example .env   # fill in your credentials
bun run dev             # starts with hot reload on http://localhost:8080

Connect to Claude.ai

  1. Open Claude.ai and click Customize

  2. Click Connectors, then the + button

  3. Click Add custom connector

  4. Fill in:

    • Name: Nutrition Tracker

    • Remote MCP Server URL: https://nutrition-mcp.com/mcp

  5. Click Connect — sign in or register when prompted

  6. After signing in, Claude can use your nutrition tools. If you reconnect later, sign in with the same email and password to keep your data.

API Endpoints

Endpoint

Description

GET /health

Health check

GET /.well-known/oauth-authorization-server

OAuth metadata discovery

POST /register

Dynamic client registration

GET /authorize

OAuth authorization (shows login page)

POST /approve

Login/register handler

POST /token

Token exchange

GET /favicon.ico

Server icon

ALL /mcp

MCP endpoint (authenticated)

Deploy

The project includes a Dockerfile for container-based deployment.

  1. Push your repo to a hosting provider (e.g. DigitalOcean App Platform)

  2. Set the environment variables listed above

  3. The app auto-detects the Dockerfile and deploys on port 8080

  4. Point your domain to the deployed URL

License

MIT

This server cannot be installed

A
license - permissive license
-
quality - not tested
C
maintenance

How are these scores calculated?

Maintenance

–Maintainers
–Response time
–Release cycle
–Releases (12mo)
Commit activity
Issues opened vs closed

Resources

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If you are the server author, to access and configure the admin panel.

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