System API documentation
If you don’t want to use our integration packages or have specific requirements that aren’t covered by our packages you can download our system API documentations and implement the services yourself.
Our documentation is created to allow you to easily implement our different payment solutions into your online store.
API-documentation for Invoice and PaymentPlan-Services:
API-documentation for Card and DirectBank-Services:
If you want to further integrate our services into your own system you can download the following
document which describes how to implement our Administration-service which allows you to administrate Invoices and PaymentPlans without using our Webpay Administration-page.