API Overview

Documentation Release Notes
- January 2026
  - Acceptance Devices | PAX All-in-One Android Solution
  - Payer Authentication
  - Payments
- December 2025
  - Acceptance Devices | PAX Acceptance Devices App
  - Acceptance Devices | PAX All-in-One Android Solution
  - Acceptance Devices | Tap to Pay on Android Acceptance Devices App
  - Acceptance Devices | Tap to Pay on Android Solution
  - Card Present Connect | Mass Transit
  - Click to Pay Drop-In UI
  - Digital Accept Secure Integration
  - Getting Started with REST
  - Unified Checkout
- November 2025
  - Acceptance Devices | PAX A35 Terminal
  - Acceptance Devices | PAX A77 Terminal
  - Acceptance Devices | PAX A920 Terminal
  - Acceptance Devices | PAX A920 MAX Terminal
  - Acceptance Devices | PAX A920 PRO Terminal
  - Acceptance Devices | PAX All-in-One Android Solution
  - Acceptance Devices | PAX IM30 Terminal
  - Acceptance Devices | Tap to Pay on Android Solution
  - Digital Accept Secure Integration
  - Getting Started with REST
  - Invoicing
  - OAuth 2.0
  - Unified Checkout
- October 2025
  - Acceptance Devices | PAX Acceptance Devices App
  - Acceptance Devices | PAX All-in-One Android Solution
  - Acceptance Devices | Tap to Pay on Android Acceptance Devices App
  - Acceptance Devices | Tap to Pay on Android Solution
  - Click to Pay Drop-In UI
  - Digital Accept Secure Integration
  - Unified Checkout
  - Webhooks
- September 2025
  - Acceptance Devices | PAX All-in-One Android Solution
  - Acceptance Devices | Tap to Pay on Android Solution
  - Card Present Connect | Retail
  - Getting Started with REST
  - Payer Authentication
  - Payments
  - Webhooks
- August 2025
  - Acceptance Devices | PAX Acceptance Devices App
  - Acceptance Devices | PAX All-in-One Android Solution
  - Acceptance Devices | Tap to Pay on Android Acceptance Devices App
  - Acceptance Devices | Tap to Pay on Android Solution
  - Digital Accept Secure Integration
  - eCheck
  - Getting Started with REST
  - Unified Checkout
  - Webhooks
- July 2025
  - Acceptance Devices | Tap to Pay on Android Acceptance Devices App
  - Acceptance Devices | Tap to Pay on Android Solution Integration Guide
  - Acceptance Devices | PAX Acceptance Devices App Integration Guide
  - Acceptance Devices | PAX All-in-One Android Solution Integration Guide
  - Payer Authentication
  - Payments
  - Token Management Service
- June 2025
  - Acceptance Devices | PAX All-in-One Android Solution
  - Acceptance Devices | PAX Acceptance Devices App
  - Acceptance Devices | Tap to Pay on Android Solution
  - Acceptance Devices | Tap to Pay on Android Acceptance Devices App
  - Card Present Connect | Lodging
  - Digital Accept Secure Integration
  - eCheck
  - Independent Software Vendors
  - Invoicing
- May 2025
  - Acceptance Devices | PAX Acceptance Devices App
  - Acceptance Devices | PAX All-in-One Android Solution
  - Acceptance Devices | Tap to Pay on Android Acceptance Devices App
  - Acceptance Devices | Tap to Pay on Android Solution
  - eCheck
  - Merchant Boarding
  - OAuth 2.0 Partner Implementation Guide
  - Payer Authentication
  - Payments
  - Unified Checkout Integration
- April 2025
  - Acceptance Devices | Tap to Pay on Android Acceptance Devices App
  - Acceptance Devices | Tap to Pay on Android Solution
  - Acceptance Devices | PAX Acceptance Devices App
  - Acceptance Devices | PAX All-in-One Android Solution
  - Digital Accept Secure Integration
  - Getting Started with REST
  - Payer Authentication
  - Token Management Service
- March 2025
  - Digital Accept Secure Integration
  - Invoicing
  - Payer Authentication
  - Unified Checkout Integration
- February 2025
  - Getting Started with REST
  - Invoicing
  - Unified Checkout Integration

On This Page

Card Present Connect | Retail

25.09.01

: Added support for Discover cash advance in Authorization for Cash Advance with Credit Card.

Back to top