{ "metadata": { "snapshot_id": "fraudshield-realworld-v2", "schema_version": "2.0", "generated_at": "2026-03-30T18:13:06.935921+00:00", "seed": 42, "build_notes": "Runtime uses this frozen snapshot only. Public source downloads are optional and intended for rebuilding the snapshot offline.", "sources": [ { "source_id": "kaggle_creditcardfraud", "provider": "Kaggle / ULB", "dataset_id": "mlg-ulb/creditcardfraud", "title": "Credit Card Fraud Detection", "source_url": "https://www.kaggle.com/datasets/mlg-ulb/creditcardfraud", "license_note": "Refer to the dataset page for license and usage terms." } ] }, "tasks": { "easy": [ { "transaction_id": "easy_legitimate_111904", "label": "legitimate", "risk_score": 0.2592, "business_cost": 0.894, "transaction_data": { "amount": 6.02, "seller_id": "seller_std_111904", "buyer_id": "buyer_111904", "item_category": "digital_goods", "item_price": 5.93, "shipping_address": "CA", "seller_account_age_days": 1685, "buyer_account_age_days": 1892, "payment_method": "paypal", "device_country": "CA", "timestamp": "2024-03-01T20:07:00", "is_repeat_buyer": true, "seller_avg_rating": 4.51, "num_seller_reviews": 1346, "previous_fraud_flags": 0, "shipping_speed": 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