Payment Gateway API Kits

PSiGate recognizes that each eCommerce business is unique. PSiGate integrates with a large number of “pre-packaged” shopping carts, accounting system and other eCommerce solutions, but we also integrate seamlessly into custom systems. This page contains all the documentation required to build a custom payment system using our Gateway. Need assistance? Please contact our Tech Support team and they will point you in the right direction.

Compatible Shopping Carts

Our Payment Gateway integrates with industry-leading shopping carts, storefront software and accounting systems.

Real-time HTML API

The Real-time HTML API allows customers to process real-time credit or debit card transactions via a browser to server connection. This API is suggested for:

  • Merchants looking for a simple way to collect payments
  • Merchants who want PSiGate to collect and store card information
  • Merchants who require communication to occur over standard ports.
  • Merchants who require Interac Online

Real-time XML API

The Real-time XML API allows customers to process real-time credit card transactions via a server to server connection. This API is suggested for:

  • Merchants developing and integrating a highly customized system
  • Merchants who do NOT require PSiGate to collect and store credit card information

The Account Manager XML API

The Account Manager XML API allows merchants to securely store their customer’s data within “Accounts” that may be billed later via recurring, installment or immediate charges. Additionally, the API allow merchants to update and query account charges, charge templates, invoices and email reports.

Order Verification API

The Order Verification API allows merchants to be able to verify the details of orders processed by PSiGate. We recommended this API to merchants who wish to:

  • Verify that their order requests have not been tampered with.
  • Verify the status of an order request when a response was not received due to a disconnect during the transaction.

PSi3D HTML API

The PSi3D HTML API allows merchants to reduce fraud by implementing Verfied by VISA and MasterCard SecureCode.

Response Codes

A list of possible response codes and their definitions.

Merchant Tools User Manual

A comprehensive guide to the PSiGate Merchant Tools.

Settlement Messenger API User Manual

A comprehensive guide to the PSiGate Settlement API.

Chargeback Prevention Guide

Download this kit with helpful information on how to reduce chargebacks.