PaySafe India — Real-Time UPI Fraud Detection with Open-Source ML (No Cloud Required)

Automated excerpt

PaySafe India is an end-to-end UPI transaction fraud detection system powered entirely by open-source machine learning — trained locally, served locally, and explained locally. I evaluated three datasets: fraud_dataset.csv (26,393 rows, 17.2% fraud) — chosen ✅ — AUC 0.97 with behavioral features upi_transactions_2024.csv (250,000 rows, 0.19% fraud) — AUC 0.55, no signal upi_fraud_india_dataset.csv (1,000 rows, 100% fraud) — impossible to classify against Script 04 automates the leakage audit: any single feature with AUC ≥ 0.94 is a leak. Your payment data never leaves your machine This is a fraud detector.

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