Developer Guide

To receive real time updates about our production and sandbox environments, we recommend that you subscribe to our status io page here:

https://status.usaepay.com

You can receive emails about interruptions in performance as well as planned maintenance.

APIs

• Rest API
• Pay.js (previously Client JS)
• Payment Engine Terminal API
• Soap API
• Transaction API

REST API SDKS

• PHP)
• .NET)
• Python

SOAP API SDKS

• PHP 5 (Built-in SoapClient)
• PHP 5 (Pear Library)
• Visual Basic (.Net)
• Visual Basic 2010 (.Net 4.0)
• C# (.Net)
• Java (JAX-WS)
• Ruby

Transaction API SDKs

• C
• Java
• JavaScript
• jQuery
• .Net
• Perl
• PHP
• Ruby

Mobile Library

• USAePay-iOS UI Library

Developer Portal

• Home
• Company Profile
• Endpoints
• Devices and Servers
• Users
• Request Sandbox Account

Reference

• ACH Format Codes
• AVS Result Codes
• Card Level Codes
• CVV Result Codes
• Currency Codes
• End to End Encryption
• Error Codes
• Existing Debt
• Gift Card Processing
• High Availability
• Invoice Terms
• Level 3 Processing
• Multi-Currency Processing
• Public Keys
• Sandbox System
• Transaction Status Codes
• Test Cards
• Test ACH Data
• Timeouts
• Tokenization
• Transaction Codes
• Transaction Key vs. ID
• Unit of Measure Codes
• Verify By Visa/MasterCard Secure Code