Checkout Overview

Learn about Onerway Checkout hosted payment page capabilities, use cases, and integration options.

Overview

Checkout is Onerway's hosted payment page solution. After creating a transaction via API, redirect users to Onerway's hosted payment page to complete payment, without needing to develop and maintain payment interfaces yourself.

Checkout supports one-time payments and subscription payments, suitable for business scenarios requiring quick integration, reduced development costs, and compliance burden.

Core Capabilities

Capability	Description
Multiple Payment Methods	Supports cards (Visa, Mastercard, etc.), digital wallets (Apple Pay, Google Pay), and local payment methods
Security & Compliance	PCI DSS compliant, built-in 3D Secure authentication, sensitive data hosted and processed by Onerway
Global Support	Multi-language interface, multi-currency transactions, automatically adapts to payment habits of different regions
Responsive Design	Payment page automatically adapts to desktop, mobile, and tablet devices
Subscription Support	Supports creating subscription plans with recurring billing

Comparison with Other Integration Methods

Feature	Checkout	SDK	API
Integration Complexity	Low	Medium	High
UI Control	Limited Customization	Partial Customization	Full Customization
Payment Page	Onerway Hosted	Embedded in Your App	Merchant Self-built
User Data Collection	Not Supported	Not Supported	Supported
PCI DSS Requirement	Not Required	Not Required	Required
3DS Redirect Control	Onerway Handles	Onerway Handles	Onerway Handles by Default, Merchant Customizable
Development Cycle	Fast	Medium	Long
Applicable Scenarios	Quick Launch	Embedded Payment Experience	Deep Customization Needs

Applicable Scenarios

Checkout is particularly suitable for the following scenarios:

Quick Launch — Want to achieve payment functionality with minimal development investment
Standardized Flow — No need for deep customization of payment page styles and interactions
Reduce Compliance Costs — Want Onerway to host payment pages, reducing PCI compliance burden
Multiple Payment Methods — Need to support multiple payment methods simultaneously without individual integration

How It Works

Create Transaction — Merchant server calls Checkout API, passes order information, obtains payment page link (redirectUrl)
User Pays — Redirect user to Checkout page, user selects payment method and completes payment
Result Notification — After payment completion, user returns to merchant-specified returnUrl; simultaneously Onerway pushes transaction result to notifyUrl via Webhook

Important: Webhook asynchronous notification contains complete transaction information and should be the final basis for order status updates.

Prerequisites

Before starting Checkout integration, please ensure you have completed the following preparation:

Register Onerway Account — Complete merchant registration and obtain merchant number (merchantNo)
Obtain API Keys — Get keys for signing in the merchant portal
Prepare Callback URLs — Configure returnUrl and notifyUrl for receiving payment results
Understand Signing Mechanism — Familiarize yourself with Onerway's request signing and verification process

Next Steps

Ready to start integration? Please refer to the following documentation:

API ReferencePayments API — View complete Checkout API parameter descriptions
Order Fulfillment — Learn how to fulfill orders after successful payment
Manage Payment Methods — Configure and manage available payment methods
Webhook HandlingPayments API — Learn how to properly handle asynchronous notifications
Testing GuidePayments API — Test your integration in the sandbox environment

Compare the Checkout and Payment Intents APIs

Learn about the differences between the Checkout and Payment Intents APIs and when to use them.

Order fulfillment

Fulfill orders and deliver goods or services after successful payment through Onerway Checkout. Learn webhook integration patterns and automated fulfillment best practices.