domain: developers.zoom.us · 5 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗
Steps
Register a webhook endpoint in your Zoom Marketplace app and subscribe to the webinar.ended event.
Validate the inbound request using Zoom's webhook signature (x-zm-signature/x-zm-request-timestamp headers) before trusting the payload.
Handle Zoom's one-time URL-validation challenge (endpoint.url_validation event) when first registering the endpoint, echoing back the encrypted token.
Parse event ("webinar.ended"), event_ts (epoch milliseconds), and payload.object for webinar-level fields like id, uuid, host_id, topic, start_time, and end_time.
Trigger downstream jobs (attendance/poll report pulls) off this webhook rather than polling, since reports aren't final until the webinar has actually ended.
Known gotchas
event_ts has been reported by developers as occasionally inaccurate/delayed relative to the real event time — don't rely on it for precise timing logic.
The one-time URL validation handshake must be handled correctly or Zoom will never mark the endpoint verified, and no events will be delivered.
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