#navbar > div {
    background-color: #3A4850 !important;
}

#navbar a {
    color: white;
}

#navbar img:nth-child(2) {
   display: none;
}

#navbar img:nth-child(3) {
    display: block;
 }
 
.payment-service-definition {
    background-color: white !important;
    border: 1px solid #0a0e0d1a;
    border-radius: 16px;
    padding: 2em;
    vertical-align: middle;
}

.payment-service-definition img {
    margin: 0 1em 0 0;
    max-width: 3em;
    display: inline-block;
}

.payment-service-definition h2 {
    margin: 0;
    display: inline-block;
    position: relative;
    top: 0.1em;
} 


Apple Pay

Google Pay

Digital wallets

Digital wallets in Embed

Wpay

Grow your payment capabilities with code.

Overview

How scalable payments flow

Command Line Interface (CLI)

Postman

Postman Collection

API authentication basics and best practices.

Authentication

JWTs

Authentication with JWTs

Sandbox and Production environments within an instance.

Environments

Best practices on handling errors and other exceptions.

Errors

Error handling

Best practices on handling retries in an idempotent way.

Idempotent Requests

Best practices on handling the original IP address for a transaction.

IP Address Forwarding

Best practices on handling pagination in the API.

Pagination

Rate limiting

Returns a paginated list of transactions for the merchant account, sorted by most recently updated. You can filter, sort, and search transactions using query parameters.

List transactions

Create a new transaction using a supported payment method. If additional buyer authorization is required, an approval URL will be returned. Duplicated gift card numbers are not supported.

Create transaction

Retrieve the details of a transaction by its unique identifier.

Get transaction

Captures a previously authorized transaction. You can capture the full or a partial amount, as long as it does not exceed the authorized amount (unless over-capture is enabled).

Capture transaction

Voids a previously authorized transaction. If the transaction was not yet successfully authorized, or was already captured, the void will not be processed. This operation releases the hold on the buyer's funds. Captured transactions can be refunded instead.

Void transaction

Retrieve a paginated list of events related to processing a transaction, including status changes, API requests, and webhook delivery attempts. Events are listed in chronological order, with the most recent events first.

List transaction events

Synchronizes the status of a transaction with the underlying payment service provider. This is useful for transactions in a pending state to check if they've been completed or failed. Only available for some payment service providers.

Sync transaction

List all buyers or search for a specific buyer.

List all buyers

Add a buyer

Get a buyer

Update a buyer

Delete a buyer

Create checkout session

Retrieve the information stored on a checkout session.

Get checkout session

Update the information stored on a checkout session.

Update checkout session

Deleta a checkout session and all of its (PCI) data.

Delete checkout session

Update session fields

List all payment links

Add a payment link

Get payment link

Expire a payment link

List the payment options available at checkout. filtering by country, currency, and additional fields passed to Flow rules.

List payment option

List payment options

List transaction refunds

Create transaction refund

Create a refund for all instruments on a transaction.

Refund all instruments

Create batch transaction refund

Get refund

Creates a session for a payment service that supports sessions.

Get session

Create a session for apayment service definition

Get session by ID

Client errors

Client-side errors (4XX)

Server errors

Server-side errors (5XX)

List 4XX errors

square-terminal

Events

Embed events

Locales

Embed localization

Theming

Embed Theming

Options

Embed options

In-app browsers

In-app browsers with Embed

Common issues

Common issues with Embed

Use Secure Fields to collect the CVV for cards previously stored.

Stored cards

Secure Fields with stored cards

Each field can be customized to match your brand using the `styles` property
when adding the field.

Secure Fields theming

Secure Fields events

Enable Click to Pay for use with Secure Fields

Click to Pay

Click to Pay with Secure Fields

Secure Fields and 3DS

Afterpay

Afterpay via the API

PayPal

PayPal via the API

Zip via the API

Vault token import

Import file

Token import file creation

Upload tokens

Token import file upload

Buyers & payment methods

Creating buyers & payment methods on import

Vault Forward

Enable endpoint

Enable a Vault Forward endpoint

Forward to endpoint

Vault Forward card data to API endpoint

CVV & Secure Fields

Vault Forward card data from a checkout session

3-D Secure

Setup

Setup 3-D Secure

Embed

3-D Secure in Embed

Hosted via API

Hosted 3-D Secure

External 3DS server

External 3-D Secure server

Testing

3-D Secure Testing

Account Updater

Manual updates

Manual account updates

Scheduled updates

Scheduled account updates

AFTs

Account funding transactions

Anti-fraud

Anti-fraud setup

Fingerprints

Automatic anti-fraud device fingerprinting

Reviews

Anti-fraud reviews

Attributes

Anti-fraud Specific Attributes

Web with Embed

Apple Pay on web with Embed

Web without Embed

Apple Pay on web without Embed

iOS with SDK

Apple Pay on iOS with the SDK

iOS without SDK

Apple Pay on iOS without the SDK

Decrypted tokens

Decrypted Apple Pay tokens

Gift Cards

Simulator

Gift card simulator

Split tender

Connections

Google Pay on web with Embed

Google Pay on web without Embed

Android with SDK

Google Pay on Android with the SDK

Android without SDK

Google Pay on Android without the SDK

Decrypted Google Pay tokens

Create transactions without a creating a buyer first

Guest checkout

Use guest buyer details in combination with stored buyer records and their payment methods

	Using SDK (Embed)	Without SDK
Apple Developer account required?	No	No
Apple merchant account required?	No	No
Customization & Theming?	Limited	Full
Domain association required?	Yes	Yes
Integrated with Checkout Flow?	Yes	Optional

	Using SDK (Embed)	Without SDK
Google Developer account required?	No	No
Customization & Theming?	Limited	Full
Integrated with Checkout Flow?	Yes	Optional

Getting Started

Integration

Tools

Cloud Vault

Features

Other

Digital wallets in Embed

Apple Pay

Google Pay

Getting Started

Integration

Tools

Cloud Vault

Features

Other

​Apple Pay

​Google Pay

Apple Pay

Google Pay