Borderless Integration, Maximum Control and Security
Simplify your payment infrastructure with our powerful API that integrates both fiat and crypto transactions, so you can focus on growing your business.
const FinalGateway = require('@finalgateway/sdk');const gateway = new FinalGateway({apiKey: 'YOUR_API_KEY',environment: 'sandbox'});async function createPayment() {const payment = await gateway.payments.create({amount: '100.00',currency: 'USD',description: 'Order #1234',customer_id: 'cust_12345',payment_methods: ['crypto', 'fiat']});console.log(payment);return payment;}
Trusted by innovative companies
Powerful Features for Developers
Everything you need to build a robust payment system for your application or website.
Auto-Generated Wallets
Create and manage dedicated wallets for each user on your platform via API. Generate blockchain wallets on demand with ease.
- On-demand wallet generation
- Real-time balance tracking
- Transaction management
Developer-Friendly Docs
Comprehensive documentation and code samples in Node.js, PHP, Python, and more to help your team integrate quickly.
- Multi-language support
- Interactive examples
- Sandbox environment
Bank-Level Security
Your transactions are protected with the highest-grade encryption and security protocols for complete peace of mind.
- TLS 1.3 & AES-256 encryption
- Webhook signatures
- IP whitelisting
Ultra-Fast Processing
With our optimized infrastructure, transactions are processed in under one second, even during peak traffic periods.
- Sub-second processing
- Handles peak traffic
- 99.99% uptime guarantee
Real-World Use Cases
Our payment API powers a wide range of businesses across different industries. See how it can work for you.
E-commerce Websites
Integrate with WooCommerce, Shopify, or custom platforms to accept both fiat and crypto payments from customers worldwide.
SaaS Applications
Manage recurring subscriptions and one-time payments with automated billing and invoicing capabilities.
Marketplaces
Split payments between vendors automatically and manage complex payment flows with ease.
Fintech Apps
Build crypto exchanges and digital wallets with our complete transaction management system.
Gaming & Digital Services
Sell in-game items or digital credits via crypto with instant processing and verification.
Custom Solutions
Our flexible API can be tailored to your specific business needs, whatever your industry.
How It Works
Get up and running with our payment API in just a few simple steps.
Developers, Let's Build Something Big
Our comprehensive documentation and SDKs make integration a breeze. Get your first transaction up and running in less than 10 minutes.
Getting Started
- Introduction
- Authentication
- Errors
- Webhooks
Core Resources
- Payments
- Wallets
- Customers
- Transactions
Advanced
- Batch Processing
- Security
- Rate Limits
Introduction
Welcome to the FinalGateway API documentation. This guide will help you integrate our payment processing system into your application.
Authentication
All API requests require authentication using your API key. You can find your API key in your dashboard settings.
Authorization: Bearer YOUR_API_KEYBase URL
All API requests should be made to:
https://api.finalgateway.com/v2/FinalGateway is a modern crypto & fiat payment platform that empowers businesses and individuals to accept, convert, and manage payments globally — fast, secure, and cost-effective.