CashBox provides a RESTful API to integrate recurring and one-time payments as well as other billing concepts into your business or application.
The API provides predictable, resource-oriented URLs, and uses HTTP response codes to indicate API errors. We use built-in HTTP features, like HTTP authentication and HTTP verbs, which are understood by off-the-shelf HTTP clients. JSON is returned by all API responses, including errors, although our API libraries convert responses to appropriate language-specific objects.
Click here for the full REST API guide.