CartSentinel

CartSentinel is a web app + lightweight checkout SDK that focuses on a neglected fraud surface: promotion abuse, refund/return scams, and “friendly fraud” patterns that slip past basic AVS/CVV checks. It plugs into Shopify, WooCommerce, and custom checkouts to score risk in real time using device fingerprinting, behavioral signals (typing cadence, rapid address changes, coupon stacking), and order-history anomalies. Instead of blanket declines, it recommends the least conversion-damaging action: step-up verification, hold for manual review, limit promo usage, or require signature-on-delivery. Merchants get a clear audit trail explaining why an order was flagged, plus a dispute pack generator (timeline, IP/device evidence, policy links) to improve chargeback win rates. It’s not magic: it won’t beat enterprise fraud suites head-on, but it can materially reduce losses for SMB-to-midmarket stores that are currently flying blind or relying solely on their payment processor’s generic tools.