API Overview

Documentation Release Notes
- 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
- January 2025
  - Apple Pay
  - Digital Accept Secure Integration
  - Getting Started with REST
  - OAuth 2.0 Partner Implementation Guide
  - Token Management Service
  - Unified Checkout Integration

On This Page

Click to Pay Drop-In UI

25.10.02

Click to Pay Appendix: Added support for
clientVersion
0.30 . See Client Version History.

25.10.01

Click to Pay Appendix: Added missing reason codes. See Reason Codes.
Updated the
clientVersion
field value to 0.30 in examples.

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