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Webhooks

MobilePay uses webhooks to notify your application when an event happens in your account. They are useful for asynchronous events, e.g. when a customer confirms a payment. When an event occurs, MobilePay collects data about the event, creates an event notification and sends the event notification to the notification URL for all webhook subscriptions that are subscribed to the event.

When to Use Webhooks#

Many events that occur within a MobilePay merchant account have synchronous results immediately. E.g., a successful payment initiation will return Payment object. Such requests don't require webhooks as the key information is already available.

Other events that occur are asynchronous: happening at a later time and not directly in response to your code's execution. With those APIs, MobilePay needs to notify your integration about changes to the state of an object so your integration can take subsequent steps.

The specific actions your webhook endpoint may take differs based upon the event. I.e.:

  • Capturing a payment when payment state has changed (user has approved it).
  • Updating records in your systems when payment point is activated and ready to be used.

Best Practices for Using Webhooks#

Review these best practices to ensure your webhooks remain secure and function seamlessly with your integration.

Event Types#

You should subscribe to the types of events required by your integration. Listening for extra events will put extra strain on your/our infrastructure and is not recommended.

You can change the events by updating your webhooks configuration.

Return a 2xx Response#

If a 2xx HTTP status code is not received within a 10s time or a status code other than 2xx is returned, MobilePay assumes that the delivery was unsuccessful. MobilePay retries the delivery of the event notification three times.

Check the Webhook Signatures#

All webhook notifications from MobilePay include a x-mobilepay-signature header. The value of this header is a HMAC-SHA1 signature generated by concatenating your webhook's notification URL with the body of the request (excluding all whitespaces) and hashing it using the signature key. You can validate the webhook notification by generating the HMAC-SHA1 in your code and comparing it to the signature of the event notification you received. The hash is sent in base64 format.

Example pseudocode that generates signature:

var signature = new HMACSHA1(signatureKey)  .computeHash(notificationUrl + notificationBody.removeWhitespace())  .toBase64();

Test Webhooks#

Use a dedicated Publish Test Notification endpoint to receive test notification. You must have configured a webhook subscription to initiate it.

Available Webhook Events#

Payment Points API#

EventDescription
paymentpoint.activated Published when newly created payment point is approved and ready to be used. Relevant to integrators.
Request body example
{  "notificationId": "946599d2-a6f2-4752-a1d0-b2454057f73e",  "eventType": "paymentpoint.activated",  "eventDate": "2021-10-13T11:20:53Z",  "data": {    "id": "403554fa-3147-4995-9668-1469039107c2b7",    "type": "paymentpoint"  }}

Payments API#

EventDescription
payment.reserved Published when payment has been approved by MobilePay user and is ready to be captured.
Request body example
{  "notificationId": "c85f42aa-0a81-4838-8e87-72236a348d08",  "eventType": "payment.reserved",  "eventDate": "2021-10-15T15:30:31Z",  "data": {    "id": "ceb351ac-9d20-4300-b5ad-e05851d5a3b7",    "type": "payment"  }}
payment.cancelled_by_user Published when payment has been cancelled by user insinde Mobilepay app.
Request body example
{  "notificationId": "b0dc5f2f-a7f7-4f89-8dc4-1dde6c6cab17",  "eventType": "payment.cancelled_by_user",  "eventDate": "2021-10-22T15:32:14Z",  "data": {    "id": "1c6f866d-9633-444b-b00d-33a5a5391869",    "type": "payment"  }}
payment.expired Published when either initiated payment didn't have any user interactions for 5-10 minutes or payment was reserved, but 7 days have passed and the reservation has expired.
Request body example
{  "notificationId": "5fdf8922-2429-4403-9e6d-055a53ae2c11",  "eventType": "payment.expired",  "eventDate": "2021-10-22T15:55:05Z",  "data": {    "id": "37cc0040-c78a-4136-8174-3f4079b0ec9c",    "type": "payment"  }}