FitTrack MCP

A read-only MCP server built with XMCP, Supabase Auth, and HTTP transport.

Tool

get-fittrack-info returns a fixed payload containing the app name, service status, and sample tracking categories. It does not require authentication and does not read or write external data.

get-recent-weight-entries is a protected, read-only tool that selects the authenticated user's records from public.fittrack_weight using a month, an exact date, an exact weight in kilograms, or a combination of date and weight. When both inputs are omitted, it defaults to the current UTC month. It refuses requests without a verified Supabase OAuth bearer token and relies on Supabase RLS to enforce auth.uid() = user_id.

Results can be sorted by date or weight, ascending or descending. Without sorting inputs, the query defaults to created_at descending.

get-recent-waist-entries applies the same protected, read-only filtering and sorting behavior to public.fittrack_waist. It accepts a month or exact date, an exact waist measurement in centimeters, and optional sorting by date or waist. Without sorting inputs, it defaults to created_at descending.

get-recent-meal-entries applies protected, read-only filtering and sorting to public.fittrack_meals. It accepts a month or exact date, a case-insensitive food-description fragment, exact calories, and optional sorting by date, calories, time, or food. Without sorting inputs, it defaults to created_at descending.

The server publishes OAuth Protected Resource Metadata at /.well-known/oauth-protected-resource. Supabase Auth is the OAuth 2.1 authorization server, while the MCP server remains the resource server.

Requirements

• Node.js 20 or newer
• npm

Local development

npm install
npm run dev

The MCP endpoint is available at http://localhost:3001/mcp.

Supabase connectivity safety test

Copy .env.example to .env.local and provide the project URL, an sb_publishable_... key, and the canonical MCP endpoint URL. Never use a secret or service-role key.

npm run test:db-read

The test performs an anonymous, read-only request against public.fittrack_weight without returning row data. It passes only when RLS hides every row from the anonymous role.

Authentication

Configure Supabase Auth with:

• OAuth 2.1 Server enabled
• Dynamic OAuth application registration enabled
• Site URL https://fittrack.taimoorahmed.com
• Authorization path /oauth/consent

The web application owns the consent page. The MCP server verifies supplied access tokens through Supabase Auth before passing them to the read-only database client. Only OAuth-issued tokens containing a client_id are accepted.

Set the production resource URL to the exact endpoint used by MCP clients:

MCP_RESOURCE_URL=https://fittrackmcp.vercel.app/mcp

Build

npm run build
npm start

Deploy to Vercel

Import this Git repository into Vercel or run:

vercel deploy

After deployment, the public endpoint is https://<deployment>.vercel.app/mcp.