You can be notified when an event happens in your account. It is done using webhooks.
To do so, you must create a new procedure in GeneXus: Main program, and HTTP call protocol.
Then you can get the data sent by Stripe using HTTPRequest variable and load it to a StripeEvent SDT.
Once loaded, you can get the event type, and use a case command to process the notification. In this example, invoice payment success and failure are captured and processed.
You can add a String Response using HTTPResponse.
&NotificationsLog.DateTime = now()
&JSON = &HTTPRequest.ToString()
¶meters = &StripeEvent.type.SplitRegEx(!"\.")
case ¶meters.Item(1) = "invoice"
case ¶meters.Item(2) = "payment_succeeded"
&NotificationsLog.Data = "Success: " + &StripeInvoice.ToJson()
case ¶meters.Item(2) = "payment_failed"
&NotificationsLog.Data = "Failure: " + &StripeInvoice.ToJson()
&Response = "OK"
Important Note: You need to deploy to Cloud so that Stripe is able to reach your URL. Else, an error code will be returned to Stripe and no notification will be processed.