BlogCalendly Webhooks

How to Test Calendly Webhooks

Calendly webhook subscriptions alert your backend when invitees book, cancel, or otherwise update scheduled meetings.

Calendly Official Webhook Docs

1. Calendly Webhook Events

Calendly can send the following webhook events to your endpoint:

invitee.created
invitee.canceled
invitee_no_show.created
routing_form_submission.created

2. Set Up a Test Endpoint with HookRay

Follow these steps to start receiving Calendly 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 Calendly 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 Calendly Webhook Payload

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

payload.json
{
  "event": "invitee.created",
  "created_at": "2026-03-20T09:45:00.000000Z",
  "payload": {
    "event_type": {
      "name": "Demo Call",
      "slug": "demo-call"
    },
    "invitee": {
      "name": "Jordan Lee",
      "email": "jordan@example.com",
      "timezone": "America/Los_Angeles"
    }
  }
}

4. Common Issues & Troubleshooting

Webhook not arriving?

Check that your endpoint URL is correct and publicly accessible. Calendly cannot reach localhost URLs — use HookRay's cloud URL instead.

Getting 400 or 500 errors?

HookRay accepts any payload and returns 200 OK by default, so the issue is likely on Calendly's side. Check your webhook configuration and event selection.

Need to verify webhook signatures?

Calendly signs webhook requests for security. Use HookRay to capture the raw headers and body, then implement signature verification in your application code.

5. Next Steps

  • Use HookRay's webhook replay feature to re-send captured webhooks while building your handler
  • Enable smart parsing (Pro plan) to see Calendly-specific fields highlighted automatically
  • Check the Calendly webhook documentation for the complete event reference

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