davidbalann

Claude Fit Logger — Data skill for Claude Code

Data community

Log food to Google Health by talking to Claude — automatic nutrition lookup via USDA/Open Food Facts, an MCP server on Render, Neon Postgres for entry tracking, and a custom OAuth 2.1 shim for Claude'.

How to install Claude Fit Logger

This entry records only its repository, not the path inside it, so there is no exact command to give. Open davidbalann/claude-fit-logger and copy the folder into ~/.claude/skills/, or the file into ~/.claude/agents/.

What Claude Fit Logger does

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README

Claude Fit Logger

Log food and drink to Google Health by just talking to Claude — from your phone, no manual entry. Claude looks up nutrition automatically (USDA / Open Food Facts, falling back to its own estimate when nothing matches), writes it to Google Health, and keeps a running daily table in chat with support for undo and corrections.

How it works

You (phone) → Claude (chat + skill) → MCP server (Render)
                                          ├─ Nutrition lookup (USDA / Open Food Facts)
                                          ├─ Entry log (Neon Postgres) — powers undo/remove
                                          └─ Google Health API — the actual food log

Full breakdown, including a diagram, in [`docs/architecture.pdf`](docs/architecture.pdf).

Status

Working end-to-end: logging, automatic nutrition lookup with manual fallback, undo, remove, and running totals all sync correctly to the Google Health app. Single-user by design — see [`docs/security.pdf`](docs/security.pdf) for why that matters before extending this to anyone else.

Repository structure

claude-fit-logger/
├── docs/              # Full documentation (see below)
├── server/            # Deployable MCP server (Render root directory)
│   ├── main.py         # Tool definitions + auth
│   ├── db.py            # Neon-backed entry log
│   ├── health_client.py # Google Health API client
│   ├── nutrition_lookup.py
│   ├── oauth.py          # OAuth 2.1 shim for Claude's connector requirement
│   └── requirements.txt
├── PRIVACY.md          # Required for Google OAuth production publishing
└── .gitignore

Documentation

Document	Covers
`docs/install.pdf`	Full setup from scratch: Google Cloud, Neon, Render, Claude connector
`docs/architecture.pdf`	System design, data flow, component breakdown
`docs/api_reference.pdf`	The four MCP tools: parameters and response s