MacroMCP

Remote MCP server for natural-language calorie/macro and weight tracking, designed to connect to Claude.ai as a custom connector. You describe meals in plain language; Claude calls structured tools; MacroMCP is the system of record and the guardrail (it never lets the model guess unverifiable numbers).

Full docs:

• docs/connector-setup.md — connect MacroMCP to Claude

• docs/architecture.md — how it fits together

• docs/deployment.md — AWS EC2 + RDS + DuckDNS runbook + security gate

• docs/security.md — controls by surface

Quick start (local)

make install          # install deps (editable)
make keys             # generate a dev JWT signing key
cp .env.example .env  # then edit as needed
make up               # docker compose: Postgres + app at http://localhost:8000
# or, against a local Postgres:
make migrate && make run

Health check: GET http://localhost:8000/healthz → {"status":"ok"}.

Related MCP server: nutrition-mcp

Testing

make test                                  # unit tests (no DB)
TEST_DATABASE_URL=postgresql+asyncpg://macro:macro@localhost:5432/macromcp_test \
  .venv/bin/python -m pytest               # + DB tests (isolation, RLS, OAuth flow)
make audit                                 # pip-audit (security gate)

Interactively exercise the MCP tools and OAuth with the Inspector:

npx @modelcontextprotocol/inspector
# transport: Streamable HTTP, URL: http://localhost:8000/mcp  (it will run the OAuth flow)

Stack

Python · FastMCP · FastAPI · PostgreSQL (RDS) · Authlib (self-hosted OAuth 2.1) · Docker + Caddy on EC2. See docs/architecture.md.

Security

Multi-user with strict per-user isolation (token sub + Postgres RLS), OAuth 2.1 + PKCE, audience-bound JWTs, and a gated security checklist. See docs/security.md.