Why are Apple Health activity webhooks empty?

Apple Health data only flows when the matching HealthKit permission is granted, and the Health app labels don't always match Terra's data types.

Apple Health data only flows when the matching HealthKit permission is granted, and the Health app labels don't always match Terra's data types.

Key mappings and gotchas:

• Activity payloads (workout sessions) require the Workouts read permission, not the activities permission alone.

• Daily background delivery is triggered by step updates, so STEPS must be in your permission list even if you only need other data types, or daily webhooks won't fire automatically. The roughly 30-minute interval is iOS-controlled and not configurable.

• Menstrual flow is labelled Cycle Tracking in the Health app, not Menstruation.

iOS only shows the HealthKit permission sheet once per permission set. The auth state lives in the Health app and persists across reinstalls. So if a type is missing:

• Have the user enable it manually under Settings > Privacy & Security > Health > [your app], or

• QA on a fresh simulator (Erase All Content and Settings) to see the full sheet again.

An undecided permission (e.g. a body category) also makes initTerra re-prompt and blocks background delivery for that type until the user responds once. See the permissions mapping reference.