BlogMollie Webhooks

How to Test Mollie Webhooks

Mollie sends webhook notifications when payment statuses change, enabling you to update orders and trigger fulfillment automatically.

Mollie Official Webhook Docs

1. Mollie Webhook Events

Mollie can send the following webhook events to your endpoint:

payment.paid
payment.expired
payment.failed
payment.canceled
refund.created
subscription.created
subscription.updated

2. Set Up a Test Endpoint with HookRay

Follow these steps to start receiving Mollie 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 Mollie 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 Mollie Webhook Payload

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

payload.json
{
  "id": "tr_7UhSN1zuXS",
  "status": "paid",
  "amount": {
    "value": "25.00",
    "currency": "EUR"
  },
  "description": "Order #12345",
  "method": "ideal",
  "metadata": {
    "order_id": "12345"
  }
}

4. Common Issues & Troubleshooting

Webhook not arriving?

Check that your endpoint URL is correct and publicly accessible. Mollie 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 Mollie's side. Check your webhook configuration and event selection.

Need to verify webhook signatures?

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

Ready to test Mollie webhooks?

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