Payments and Refunds API Webhooks
The Payments and Refunds API supports a set of webhooks. You can subscribe to these webhooks events to get notified when there are changes. For a list of supported webhooks, see Subscribe to Webhook Events. Note the following about these webhooks:
Payment.createdevent notification is sent when:
A card payment is taken by a seller through other means, such as the POS app, and Invoices.
payment.updated event is generated when the state of a card payment changes. For example, in a
scenario, payment is only authorized. Later when you call CompletePayment (or CancelPayment), the payment state changes. In addition, if an authorized payment is not completed (or cancelled) within the time limit, the payment automatically gets voided (Square cancels the payment) and you get the
payment.updated event notification.
When you refund a payment (using the RefundPayment endpoint), you get the following event notifications:
Refund.createdinitially indicates the task is pending. Later you also get the
refund.updatedevent after the refund either completed (or fails).
payment.updatedevent notification. The Payment object in the notification includes the refund ID.
refund.updatedevent is sent any time a refund state changes.