Withings MCP vs Garmin Local MCP

withings_trends

Analyse trends in cached health data. Computes averages, min/max, and changes over time from the local cache. Auto-syncs if the cache is stale (no sync today). Args: data_type: What to analyse. Options: "body", "sleep", "activity". period: Aggregation period. Options: "weekly", "monthly", "quarterly". Default: "monthly". start_date: Start date as "YYYY-MM-DD" or "12m" for relative. Default: last 12 months. end_date: End date as "YYYY-MM-DD". Default: today. compare: Compare two periods. Format: "last_30d vs previous_30d", "2026-03 vs 2026-02", "2026-Q1 vs 2025-Q4". When set, period/start_date/end_date are ignored. Returns aggregated averages with change indicators. For body data: weight, fat%, muscle trends. For sleep: duration, score, HR trends. For activity: steps, distance, calorie trends. Not for raw data -- use withings_get_body/sleep/activity instead.

withings_get_body

Get body composition measurements (weight, fat, muscle, etc.). Returns measurements from the local cache by default. Use live=True to fetch directly from Withings API. Run withings_sync first to populate the cache. Args: start_date: Start date as "YYYY-MM-DD", "YYYY-MM", or "30d" for relative days. Default: last 30 days. end_date: End date as "YYYY-MM-DD". Default: today. metrics: Comma-separated metric filter, e.g. "weight_kg,fat_pct". Default: all available metrics. Options: weight_kg, fat_pct, fat_mass_kg, muscle_mass_kg, hydration_kg, bone_mass_kg, heart_rate, systolic_bp, diastolic_bp, spo2_pct. live: If true, fetch from Withings API instead of cache. Returns measurements sorted by date, one entry per measurement group. Not for sleep or activity data -- use withings_get_sleep or withings_get_activity instead.

withings_get_devices

Get connected Withings devices with battery and firmware info. Always fetched live from the Withings API. Returns device type, model name, battery level (high/medium/low), and last session date for each connected device.

withings_get_heart

Get ECG recordings and atrial fibrillation detection results. Always fetched live from the Withings API (not cached due to large signal data). Requires a Withings device with ECG capability (ScanWatch, BPM Core). Args: start_date: Start date as "YYYY-MM-DD" or "30d". Default: last 30 days. end_date: End date as "YYYY-MM-DD". Default: today. Returns ECG recording list with timestamps, AFib classification (negative/positive/inconclusive), and heart rate. Does not include raw signal waveforms. For resting heart rate trends, use withings_get_body or withings_get_sleep instead.

withings_get_sleep

Get sleep data (summaries or detailed phases). Summary mode (default): nightly totals with duration, sleep score, HR, respiratory rate, and snoring. From local cache unless live=True. Detail mode (detail=True): minute-by-minute sleep phases (awake, light, deep, REM) with HR and respiratory rate. Always fetched live. Maximum 7 days per request (Withings API limit). Args: start_date: Start date as "YYYY-MM-DD", "YYYY-MM", or "7d". Default: last 7 days (detail) or last 30 days (summary). end_date: End date as "YYYY-MM-DD". Default: today. detail: If true, return minute-by-minute sleep phases instead of nightly summaries. Always live, max 7 days. live: If true, fetch summaries from API instead of cache. Ignored when detail=True (always live). Returns nightly sleep data sorted by date. Not for body composition -- use withings_get_body instead.