BlogZoom Webhooks

How to Test Zoom Webhooks

Zoom webhooks deliver real-time events for meetings, webinars, recordings, and chat — letting you build attendance tracking, transcription pipelines, and integrations.

Looking for the broader picture? See the 7 best webhook testing tools (2026), or if you're already on Webhook.site, the 60-second migration to HookRay.

Zoom Official Webhook Docs

1. Zoom Webhook Events

Zoom can send the following webhook events to your endpoint:

meeting.started
meeting.ended
meeting.participant_joined
meeting.participant_left
recording.completed
recording.transcript_completed
webinar.started
webinar.ended

2. Set Up a Test Endpoint with HookRay

Follow these steps to start receiving Zoom webhooks for testing:

  1. Go to HookRay and click "Start Testing — Free" to get your unique webhook URL.
  2. Copy the URL (e.g., https://h.hookray.com/abc123).
  3. In your Zoom dashboard, navigate to the webhook settings and paste the HookRay URL as your endpoint.
  4. Select the events you want to receive (see list above).
  5. Trigger a test event — HookRay will show the incoming webhook in real-time.

3. Sample Zoom Webhook Payload

Here's an example of what a Zoom webhook payload looks like:

payload.json
{
  "event": "meeting.started",
  "event_ts": 1745420800123,
  "payload": {
    "account_id": "AAAAAABBBB",
    "object": {
      "uuid": "rDmONPbTQ8maWmgRH==",
      "id": 87654321098,
      "host_id": "x1yCzABCDeFGhIJklm",
      "topic": "HookRay Q2 product review",
      "type": 2,
      "start_time": "2026-04-23T14:45:00Z",
      "duration": 0,
      "timezone": "Asia/Tokyo"
    }
  }
}

4. Frequently Asked Questions

How do I test Zoom webhooks without deploying?

Use HookRay to get an instant public webhook URL. Paste it into your Zoom dashboard's webhook configuration, trigger an event, and watch the payload arrive in real time. No code, no ngrok, no deployment required. The free tier captures 100 requests per month and works on all Zoom event types.

Why aren't my Zoom webhooks arriving?

The four most common causes: (1) the endpoint URL isn't publicly accessible — Zoom can't reach localhost; (2) the wrong events are subscribed in your Zoom dashboard; (3) signature verification is rejecting the request before your handler runs; (4) Zoom can't reach your server because of a firewall, expired SSL certificate, or wrong DNS. Use HookRay's URL to isolate which of these four is failing — if HookRay receives the webhook, the problem is in your handler. If HookRay doesn't, the problem is in Zoom configuration.

Why am I getting 400 or 500 errors from my Zoom webhook?

Zoom reports the response status your endpoint returned. HookRay accepts any payload and returns 200 OK by default, so if you see 400/500 in your Zoom dashboard while pointing at HookRay, the issue is in Zoom's configuration (wrong event, malformed signing secret, etc.). If you point at your own endpoint and get 400/500, the issue is in your handler — capture the request with HookRay, replay it locally, and debug from the captured payload.

How do I verify Zoom webhook signatures?

Zoom signs each webhook request with a shared secret. Capture the raw headers and body using HookRay, then verify the signature in your application using Zoom's SDK or a standard HMAC library. Once verification works against HookRay-captured data, you can safely deploy. Zoom's docs (linked above) cover the exact signing algorithm.

Can I replay a captured Zoom webhook?

Yes — HookRay's replay feature re-sends any captured webhook to a different endpoint with one click. This is the fastest way to fix a buggy handler: capture the payload once, fix your code, and replay until it works. No need to re-trigger the event in Zoom.

5. Next Steps

  • Use HookRay's webhook replay feature to re-send captured webhooks while building your handler
  • Use the sample Zoom payload above as a cheat sheet for the fields you'll need to extract in your handler
  • Check the Zoom webhook documentation for the complete event reference

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Free PDF: Webhook Testing Cheat Sheet 2026

One-page reference for 50+ APIs — canonical events, signing methods, sample payloads. Print it, pin it, share it.

📄 Download the cheat sheet (PDF, 180KB)

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