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2025

Card Authorization Engine

A real-time card authorization system built in TypeScript with MySQL for persistence. This system processes card transactions, evaluates fraud and us…

Overview

A real-time card authorization system built in TypeScript with MySQL for persistence. This system processes card transactions, evaluates fraud and user-defined rules, and makes approve/decline decisions in real-time (under 1 second). Open-source project by Andre Piper, published on GitHub.

Highlights

  • Primary language: TypeScript
  • Open source — view the code and contribute on GitHub

Built with

  • TypeScript

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