UsimPay Transaction API

Simple and secure payment processing for your business

Secure Payments

FPX online banking integration with bank-grade security

Fast Integration

Simple REST API with comprehensive documentation

Complete Logging

Automatic request/response logging for debugging

Quick Start

1. Initialize Payment

POST /api/payment/initial
Content-Type: application/json

{
  "merchant": {
    "merchant_id": "MERCH001",
    "merchant_name": "Your Business"
  },
  "customer": {
    "customer_name": "John Doe",
    "customer_email": "john@example.com"
  },
  "payment": {
    "payment_ref": "INV001",
    "amount": 100.00,
    "payment_description": "Product purchase"
  }
}

2. Redirect Customer

Use the returned payment_url to redirect your customer to the payment page.

3. Customer Completes Payment

Customer selects their bank and completes payment through FPX online banking.