Local-first Garmin data warehouse: sync once to SQLite, analyze trends and correlations offline.
Local-first Garmin data warehouse: sync once to SQLite, analyze trends and correlations offline.
Every existing Garmin MCP server follows the same design: a thin live wrapper around Garmin's rate-limited, unofficial API. Each question your AI assistant asks becomes one or more live API calls that return huge raw JSON blobs (a single raw sleep response runs around 230 KB). Multi-month questions like "how does my sleep correlate with training load?" are impractical, and when Garmin changes its auth (as it did in March 2026, breaking the whole ecosystem), those servers go completely dark, even for data they already fetched yesterday.
Compare MCP servers by category, or browse hosted MCP servers if you prefer an endpoint over a local process.
Check the linked publisher documentation and your connected client's tool list. Names and availability can vary with the server version and account permissions.
| Tool | What it does |
|---|---|
| auth_status | Check whether stored Garmin Connect tokens exist (use before sync, or after an auth error). |
| sync | Fetch up to 60 days from Garmin Connect into the local store (default: last 30 days ending yesterday; big backfills belong in the CLI). |
| sync_status | Local data coverage per table, last sync time, and pending sync errors. |
| get_day | One merged view of a single day: wellness, sleep, HRV, training status, activities, and data-quality flags. |
| query_metrics | Columnar time series for one or more metrics between two dates, with daily/weekly/monthly aggregation and optional stats. |
| correlate | Pearson/Spearman correlation between two metrics, with day-lag support and an optional scan over lags -7..+7. |
| baselines | Personal mean +/- sd band per metric over a trailing window (default 28 days), to judge what is normal for this user. |
| anomalies | Outlier days (z-score deviations) and sustained streaks (5+ consecutive days on one side of the mean). |
| list_activities | Recent activities newest-first as a compact table, filterable by type, date range, and minimum distance. |
| get_activity | Full stored summary row for one activity (summary fields only, no GPS or sample streams). |
| gaps | Missing days per table plus unresolved sync errors, to find holes worth re-syncing before drawing conclusions. |
| import_fit | Zero-auth offline ingest of a manually exported Garmin wellness FIT bundle. |
{
"mcpServers": {
"garmin": {
"command": "garmin-local-mcp",
"args": [
"serve"
]
}
}
}From the project documentation. Replace placeholders and example paths before connecting.
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