Developer Documentation

PayMatrix AI Group API Documentation

Comprehensive API reference, SDKs, webhooks, and integration guides for all PayMatrix platforms

REST API
Full HTTP Interface
GraphQL
Query Language
Webhooks
Real-time Events

Quick Start Guides

Choose your platform and get integrated in minutes

PayMatrixAI.com API

AI Payment Orchestration

POST /api/v1/payments/create 
{
  "amount": 10000,
  "currency": "USD",
  "customer_id": "cus_123",
  "payment_method": "card"
}
AI-powered fraud detection
Smart transaction routing
Real-time risk scoring
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PayEngineAI.com API

Developer-First Infrastructure

POST /api/v1/wallet/create 
{
  "user_id": "usr_456",
  "wallet_type": "non_custodial",
  "blockchain": "ethereum"
}
Non-custodial wallet APIs
Comprehensive webhooks
Real-time event streaming
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SmartPayEngine.com API

Smart Checkout & Routing

POST /api/v1/checkout/session 
{
  "items": [...],
  "success_url": "https://...",
  "payment_methods": ["card", "crypto"]
}
Hosted checkout pages
Crypto payment support
Intelligent routing engine
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Authentication

API Keys & OAuth 2.0

Authorization Header 
Authorization: Bearer sk_live_...
Content-Type: application/json
API key authentication
OAuth 2.0 support
Webhook signatures
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Official SDKs & Libraries

Native libraries for your favorite programming language

Node.js

npm install paymatrix

Python

pip install paymatrix

Java

Maven / Gradle

PHP

composer require paymatrix