Transaction Webhooks

Learn about transaction webhooks.

Transaction webhooks are sent via the Events API. See our Events API and Webhooks guide here.

Message Types

Transaction Events are generated for the below actions. See our Transaction Flow guide for more information about Transaction Events and how they interact.

AuthorizationThe API sends an event for all approvals. Decline events are available with API Issuing accounts
Auth AdviceTransaction was declined by an upstream switch or a previous authorization's amount is being adjusted
VoidPrevious pending authorization is voided
ClearingClearing for an existing, pending authorization
ReturnCredit — value is pushed onto card

Webhook Verification

See Verifying Webhooks in our Events API documentation.


The request payload will contain a Transaction object.

Simulating Webhooks

Please refer this page to learn about simulating card transactions.