Nutrition MCP

A remote MCP server for personal nutrition tracking — log meals, track macros, and review nutrition history through conversation.

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.

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

MCP Resources

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

Note: The HTML files in public/ include a Google Analytics tag (G-1K4HRB2R8X). If you're self-hosting, remove or replace the gtag snippet in public/index.html, public/login.html, and public/privacy.html.

Generate OAuth credentials:

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

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