florisng/MoMo-Payment-App

Node.js and Express backend for accepting MTN MoMo payments in Rwanda using the MTN MoMo Collections API. # MTN MoMo Payment Integration App 💳 A full-stack mobile money payment system built using Node.js and the MTN MoMo API. This project simulates a real-world fintech checkout experience with payment initiation and real-time transaction status tracking. --- ## 🚀 Live Demo - Frontend: your-frontend-link.com - Backend API: your-backend.onrender.com --- ## ⚠️ Important Notice This application is currently running in **MTN MoMo Sandbox Mode**. No real money transactions are processed. All payments are simulated for testing and development purposes only. --- ## ✨ Features - Initiate mobile money payments via MTN MoMo API - Real-time payment status tracking (SUCCESSFUL / FAILED / PENDING) - Clean checkout UI (responsive design) - Backend API built with Express.js - Frontend communicates with hosted backend (Render) - Full end-to-end payment flow simulation --- ## 🧠 What I Learned - API authentication (OAuth2 with MTN MoMo) - Payment gateway integration - Backend architecture for transaction systems - Real-time polling for transaction status - Deploying full-stack applications (Render + GitHub Pages) - Handling environment variables securely --- ## 🛠 Tech Stack **Frontend** - HTML5 - CSS3 - JavaScript (Vanilla) **Backend** - Node.js - Express.js **APIs & Services** - MTN MoMo API (Sandbox) - Render (Backend hosting) - GitHub Pages (Frontend hosting) --- ## 📁 Project Structure