Developer Resource Center

Developer API:

  • Direct Post API
  • Three Step API
  • Query API
  • Mobile API
  • QuickClicks™

Direct Post API

The Direct Post method is the simplest integration method for both web-based and non web-based payment applications. We recommend merchants also use our PCICertify™ service when deploying a payment solution in a shared server environment. CertifyPCI will help you complete a PCI vulnerability scan.


Three Step API

The Three Step Redirect is the preferred API for customized web-based payment processing. Using this integration method significantly reduces a merchant's PCI footprint without sacrificing end-user look and feel. This method is required when using Verified by Visa/Mastercard SecureCode (Payer Authentication).


Query API

The Query API allows merchants to download a detailed stream of transaction data. This dataset can then be used to create in-house reports and analytics.


Mobile API

The Mobile API supports iOS and Android based devices. These SDKs include a mobile card reader library which simplifies integrations for applications requiring encrypted mobile card readers. Additionally, an end-to-end encryption library is included, allowing merchants to send both swiped and keyed-in payment information without ever touching any sensitive data.

Developers must access the gateway control panel in order to download the Mobile APIs.



QuickClick is a great option for e-commerce merchants who do not have an IT team or developer on staff. A button-generator is included, which allows merchants to create website links to products and services without any previous development experience.

Merchants or their developers must access the gateway control panel in order to create Payment URLs and Payment Buttons.