API Overview

Unified Checkout Developer Guide
- Recent Revisions to This Document

Introduction to Unified Checkout

Unified Checkout Flow
- Enabling Unified Checkout in the Gateway Portal

Server-Side Set Up
- Capture Context

Client-Side Set Up
- Loading the JavaScript Library and Invoking the Accept Function
  - JavaScript Example: Initializing the SDK
  - JavaScript Example: Displaying the Button List
  - JavaScript Example: Client-Defined Trigger for Click to Pay or PAN Entry
  - JavaScript Example: Processing a Payment
- Complete Integration Examples
  - JavaScript Example: Setting Up with Full Sidebar
  - JavaScript Example: Setting Up with the Embedded Component

Transient Tokens
- Transient Token Format
  - Example: Transient Token Format
- Token Verification
- Dual-Branded Cards

Authorizations with a Transient Token
- REST Example: Requesting an Authorization with a Transient Token

Capture Context API
- Features
- Client Version History
- Requesting the Capture Context
  - Required Fields for Requesting the Capture Context
  - REST Example: Requesting the Capture Context
- Validating the Capture Context

Payment Details API
- REST Example: Retrieving Transient Token Payment Details

JavaScript API Reference
- Class: Accept
- Class: AcceptError
- Class: UnifiedPayments

Unified Checkout Configuration
- Webhooks Support
- Enable Digital Payments
  - Enrolling in Apple Pay
  - Preparing a Device for Testing Apple Pay on Unified Checkout
  - Enabling Click to Pay
    - Set Up Customer Authentication for Visa
  - Enrolling in Google Pay
  - Managing Google Pay Authentication Types
- Manage Permissions
  - Managing Permissions as a Direct Merchant
  - Managing Permissions as a Portfolio Administrator

Test Your Unified Checkout Configuration
- Test Payment Details
- Customer Authentication

Payment Methods
- Cards

VISA Platform Connect: Specifications and Conditions for Resellers/Partners

On This Page

Supported Countries for Digital Payments

Apple Pay, Click to Pay, and Google Pay are supported in different countries.

See these topics for the lists of the countries that support digital payments:

Supported Countries for Digital Payments A-D

Supported Countries for Digital Payments E-K

Supported Countries for Digital Payments L-R

Supported Countries for Digital Payments S-Z

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