The Miva PHP SDK by Gassan Idriss integrates eCommerce features into applications via API interaction. Features include libraries and wrappers to interact with Miva Merchant Enterprise Provisioning. It includes XML and SOAP client, XML builder, and installation.
The initial releases from credit card provider MasterCard look to be more than a toe-dip into APIs. With its MasterCard Payments API and two others, the company could be diving straight into the deep end. Though the services are still in beta, MasterCard appears to be taking very seriously its creation of a developer ecosystem.