post https://apiprod.fattlabs.com/webhook
You can configure webhooks via the API to be notified about events that happen in your account. Generally, this will be the same result as a GET call performed. For example, the payload of the create_transaction webhook will have the same payload as GET transaction/id.
Note: This is only for what webhooks are available and how to create them. A service such as webhook.site can be used to create custom webhooks
See the following for a list of Merchant Webhook events:
Merchant Webhook Events