E-xact Gateway Developer Guides

Welcome to the official developer documentation for the E-xact Payment Gateway.

Our platform offers two distinct integration paths depending on your PCI compliance scope and development resources. Choose the path that best fits your needs:

1. Direct API Integration

Best for merchants who want complete control over the checkout UI and have the ability to securely handle sensitive card data (requires higher PCI-DSS compliance).

• View Authentication Guide
• View Transaction API Reference

2. Hosted Checkout (HCO)

Best for merchants who want to minimize their PCI-DSS scope. You redirect the customer to our securely hosted payment page, we collect the card data, process the payment, and redirect them back to your site.

• View Hosted Checkout Integration Guide
• View Redirects and Callbacks