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Use usePoseTracker inside PoseTrackerProvider to subscribe to typed events. Without an API key you get keypoints-only mode.

Keypoints (free)

KeypointsEvent shape:

Useful WebViewPoseView props

Full table: WebViewPoseView.

More typed callbacks

Available on usePoseTracker({ ... }) when the paid engine is active (API key):
  • onCountercount, optional formScore (score, average, grade)
  • onAngles, onPosture, onProgression, onRecommendations
  • onFormScore, onExerciseSummary
  • Jump events (onJumpResult, …)
Without a key, business events are not emitted — only keypoints (and init / error / quality signals). Full catalog (shapes + error codes): Events.

Classic onMessage (optional)

For WebView parity with snake_case payloads (current_count, form_score):
Prefer typed callbacks for new apps.

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Optional API key + exercise · Events catalog · Quickstart