In v0.7 and below, Open Wearables runs a historical sync automatically when a user connects a provider through OAuth (
HISTORICAL_SYNC_ON_CONNECT=true). If you haven’t changed that setting, the range you actually get on connect is 90 days for pull-based providers, and 30 days for Garmin, whose webhook-based backfill is capped at 30 days from the user’s consent date - no matter how far back the provider itself would let you go. This default is planned to change in a future release.To control the range yourself, set HISTORICAL_SYNC_ON_CONNECT=false and call POST /api/v1/providers/{provider}/users/{user_id}/sync/historical explicitly, where days defaults to 90 and is capped at 365. See Historical Backfill in the Integration Guide for the full flow.