How to Test Azure Event Grid Webhooks

Azure Event Grid routes events from Azure services and custom topics to webhook subscribers using a push-based delivery model.

1. Azure Event Grid Webhook Events

Azure Event Grid can send the following webhook events to your endpoint:

2. Set Up a Test Endpoint with HookRay

Follow these steps to start receiving Azure Event Grid 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 Azure Event Grid 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 Azure Event Grid Webhook Payload

Here's an example of what a Azure Event Grid webhook payload looks like:

{
  "id": "2d1781af-3a4c-4d7c-bd0c-e34b19da4e66",
  "topic": "/subscriptions/{sub-id}/resourceGroups/rg/providers/Microsoft.Storage/storageAccounts/sa",
  "subject": "/blobServices/default/containers/uploads/blobs/report.pdf",
  "eventType": "Microsoft.Storage.BlobCreated",
  "eventTime": "2026-03-20T15:15:00.000Z",
  "data": {
    "api": "PutBlob",
    "contentType": "application/pdf",
    "contentLength": 524288,
    "url": "https://sa.blob.core.windows.net/uploads/report.pdf"
  }
}

4. Common Issues & Troubleshooting

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 Azure Event Grid-specific fields highlighted automatically
• Check the Azure Event Grid webhook documentation for the complete event reference