The Gate API: Your Custom Payment Engine
Build a fully custom, embedded payment flow directly on your site, engineered for the security and flexibility demanded by high-risk and regulated industries.
Built for Developers
Powerful Use Cases
Custom E-commerce Checkout
Integrate payments directly into your multi-step checkout flow without ever redirecting the user away from your brand.
Subscription & Recurring Billing
Programmatically manage complex subscription plans with our recurring payments API, built to handle Credential-on-File (CoF) tokenization.
Compliant High-Risk Payments
Build compliant and secure payment flows for regulated industries with the advanced risk management tools you control.
Native In-App & Mobile Payments
Build native payment experiences inside your iOS or Android application for a smooth, frictionless purchase process.
The Power of a Direct API Integration
Why Choose the Gate API?
Seamless User Experience
Keep customers on your site from start to finish. A native, uninterrupted payment flow significantly boosts conversion rates and user trust.
Full UI/UX Control
Design every pixel of your payment form. Our API gives your developers the flexibility to build the exact user journey your brand requires.
Server-to-Server Data Flow
Receive detailed, real-time data directly to your server with every transaction, enabling advanced analytics, custom receipts, and deep system integration.
Explore the API Reference
Explore our complete API reference for detailed information on every endpoint, parameter, and response object.
Go to Gate API ReferenceFlexible Architecture
Use Standalone or with Our Hosted UI
While the Gate API gives you full server-to-server control, you can also use it to programmatically open our pre-built, secure Payment Page, giving you the best of both worlds.
Explore the Payment Page