withings-mcp
MCP server for the Withings Health API with OAuth, local SQLite cache, and trend analysis.
What makes this different from other Withings MCP servers:
- Local SQLite cache for fast offline queries and historical trend analysis
- Incremental sync - only fetches new data since last sync
- All 200+ Withings measurement types supported (body comp, sleep, activity, workouts, ECG)
- Automatic OAuth token refresh (access tokens: 3h, refresh tokens: 1 year)
- Zero dependencies beyond
mcp(HTTP via stdlib) - Python 3.13+
Tools
| Tool | Description |
|---|---|
withings_sync | Sync data from Withings API to local cache |
withings_get_body | Body composition (weight, fat%, muscle, bone, BP, SpO2) |
withings_get_sleep | Sleep summaries or detailed phase time-series |
withings_get_activity | Daily steps, distance, calories, active time |
withings_get_workouts | Workout sessions with type, duration, HR |
withings_get_heart | ECG recordings and AFib detection |
withings_get_devices | Connected devices with battery status |
withings_trends | Period averages, weekly/monthly/quarterly trends, comparisons |
Prerequisites
- Python 3.13+
- uv (recommended) or pip
- A Withings developer account and registered application
Installation
git clone https://github.com/partymola/withings-mcp.git
cd withings-mcp
uv venv --python 3.13 .venv
uv pip install -e .
Setup
1. Register a Withings app
- Go to https://developer.withings.com/dashboard
- Create a new application
- Set the callback URL to
http://localhost:8585 - Note your Client ID and Client Secret
2. Authenticate
.venv/bin/withings-mcp auth
This opens your browser for Withings authorization. After approving, tokens are saved locally in config/.
3. Register with Claude Code
claude mcp add -s user withings -- /path/to/withings-mcp/.venv/bin/withings-mcp
4. First sync
In Claude Code, say: "Sync my Withings data"
This runs withings_sync to populate the local cache. Subsequent syncs only fetch new data.
Configuration
| Environment Variable | Default | Description |
|---|---|---|
WITHINGS_MCP_CONFIG_DIR | ./config/ | Directory for credentials and tokens |
WITHINGS_MCP_DB_PATH | ./withings.db | SQLite database path |
Example Prompts
- "Sync my Withings data"
- "Show my weight for the last 3 months"
- "How has my sleep changed this year?"
- "Compare my body composition this month vs last month"
- "What workouts did I do in March?"
- "What Withings devices do I have connected?"
- "Show my sleep trends quarterly"
Development
# Install with dev dependencies
uv pip install -e . && uv pip install pytest
# Run tests (74 tests, all use in-memory SQLite with fictional data)
.venv/bin/python -m pytest tests/ -v
Security
- Read-only: No tools modify data on Withings servers
- Local storage: Health data stays in your local SQLite database
- Token storage: OAuth tokens stored in
config/(gitignored, file permissions 0600) - Error messages: Never contain health data values - only status codes
- Pre-commit hook: Rejects database files and credentials from commits
License
GPL-3.0-or-later