Скачать или смотреть Day 7 - Day 30: Build AI Transaction Categorization API | OpenAI + Node.js Fintech App

In Day 7 of the 30-Day AI Fintech App Challenge, you’ll build an intelligent Transaction Categorization API that automatically classifies user expenses using Artificial Intelligence.

This is a real-world fintech feature used in modern banking apps like budgeting trackers and digital wallets. Instead of manually selecting categories, your app will use OpenAI to automatically classify transactions into groups like Food, Bills, Transport, Shopping, Entertainment, Health, Education, and more.

You’ll learn how to integrate OpenAI API with Node.js, Express.js, Prisma ORM, and MongoDB, and store AI-classified transactions in your database. By the end of this tutorial, your fintech app will be able to understand user spending behaviour and prepare data for analytics dashboards.

💻 What You’ll Learn

✅ Build a Transaction Categorization Backend API
✅ Use OpenAI to classify financial transactions
✅ Store AI-classified transactions in MongoDB
✅ Create real fintech budgeting features
✅ Integrate AI with Node.js and Express.js
✅ Improve financial analytics using AI

🧠 Technologies Used

Node.js

Express.js

OpenAI API

Prisma ORM

MongoDB

TypeScript

JWT Authentication

🔥 Why This Matters

Modern fintech apps rely heavily on AI to:

✔ Track user spending
✔ Generate financial insights
✔ Improve budgeting
✔ Deliver personalized recommendations

This tutorial helps you build job-ready fintech and AI skills using real production concepts.

📌 Series Playlist
   • 30-Day Full-Stack Fintech App Build | Next...  
Follow the full 30-Day AI Fintech App Challenge to build a complete AI-powered banking platform from scratch.

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Comment “DAY 7 COMPLETE ✅” once you finish this tutorial.

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