Creating a Webhook Subscription

A webhook is a means of notifying a third-party application of the occurrence of an event with some relevant information. In the Dwolla API, webhooks are currently triggered by the following resources:

• Customers
• Documents
• Funding Sources
• Transfers
• Mass Payments

Each webhook sent by the Dwolla API contains an Event with _links to: the associated resource, account associated with the event, and the customer associated with the event (if applicable). It is important to note that a single API request can trigger multiple webhooks to be fired, e.g. initiating a transfer from an Account to Customer can create the events transfer_created and customer_transfer_created.

Webhooks are sent asynchronously and are not guaranteed to be delivered in order. We recommend that applications protect against duplicated events by making event processing idempotent.

Example webhook payload

{
  "id": "80d8ff7d-7e5a-4975-ade8-9e97306d6c15",
  "resourceId": "36E9DCB2-889B-4873-8E52-0C9404EA002A",
  "topic": "customer_created",
  "timestamp": "2015-10-22T14:44:11.407Z",
  "_links": {
    "self": {
      "href": "https://api-sandbox.dwolla.com/events/80d8ff7d-7e5a-4975-ade8-9e97306d6c15"
    },
    "account": {
      "href": "https://api-sandbox.dwolla.com/accounts/b4cdac07-eeca-4059-a29c-48900e453d54"
    },
    "resource": {
      "href": "https://api-sandbox.dwolla.com/customers/36E9DCB2-889B-4873-8E52-0C9404EA002A"
    },
    "customer": {
      "href": "https://api-sandbox.dwolla.com/customers/36E9DCB2-889B-4873-8E52-0C9404EA002A"
    }
  }
}