How to Test Trello Webhooks

Trello webhooks notify your server when cards, lists, and boards are updated so you can keep external systems in sync.

1. Trello Webhook Events

Trello can send the following webhook events to your endpoint:

2. Set Up a Test Endpoint with HookRay

Follow these steps to start receiving Trello 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 Trello 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 Trello Webhook Payload

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

{
  "action": {
    "type": "updateCard",
    "date": "2026-03-20T14:30:00.000Z",
    "data": {
      "card": {
        "id": "5c1f7a2b3c4d5e6f",
        "name": "Test webhook delivery",
        "idList": "5a1b2c3d4e5f6g7h"
      },
      "listAfter": {
        "name": "Done"
      },
      "listBefore": {
        "name": "In Progress"
      },
      "board": {
        "name": "Sprint Board"
      }
    },
    "memberCreator": {
      "username": "dev-user"
    }
  },
  "model": {
    "id": "5a1b2c3d4e5f6g7h"
  }
}

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 Trello-specific fields highlighted automatically
• Check the Trello webhook documentation for the complete event reference