Unfortunately the app goes around you back an ask litium directly for the methods connected to that channel. I can’t find where but i think @patric.forsgard hade a idea somewhere about perhaps it was possible to decorate the service that the klarna app talks to but haven’t tested since we just needed to stop litium from sending them at app to klarna and that was added to litium in the latest versions.
It exists an interface that can be implemented that is invoking with the payment information that is sent to the payment app before the request happen, you find it in the Litium.Connect.Abstractions package and the name is Litium.Connect.Payments.IPaymentIntrospection, the interface is marked as experimental because the contract may change if we see that we need more parameters in the request.