From their site: Zaypay makes international micropayments through SMS, phone calls and other alternative pay methods a piece of cake. With its free service a micropayment can be integrated into your website for just minutes of your time. Using our API enables your application to talk with Zaypay directly, and allows Zaypay to talk back to your application.
The following is a list of SDKs from our SDK directory that matched your search term. Though your definition of an SDK may differ, in our world, we define SDKs as platform- specific tools for consuming existing APIs of the sort we list in our API directory. For example, the Ruby SDK for consuming the Twitter Ads API. If you think an SDK, API, or other asset is missing from our directory, be sure to check our guidelines for making contributions to ProgrammableWeb.