Catch refund abuse
before you approve it
Sentinel scores refund requests against a cross-merchant abuse network on Stripe. When a serial refunder hits one merchant, every Sentinel merchant sees them. Every decision you make sharpens the signal for every other merchant.
14 days free. Then $49/month ($39 with Reflex).
The refund abuse pattern
Without Sentinel
- A customer emails asking for a refund. You have no reason to say no.
- You approve it. Later, you find out they refunded the same product at 3 other merchants.
- No shared signal. Each merchant absorbs the loss alone.
- Serial refunders keep moving. You keep writing off the cost.
With Sentinel
- You open the charge. Sentinel shows a 0-100 risk score.
- If the card has refunded 5 times across 3 merchants in 30 days, you see it.
- You approve, request proof, or decline, with context the customer can't hide.
- Every decision feeds the abuse network. Your signal protects every merchant.
How Sentinel scores every refund
Two network-native signals today. Both strengthen with every merchant added and every refund scored.
Cross-merchant abuse network
Device, IP, card, and email hashes contributed by every Sentinel merchant when a customer requests a refund. When the same signals show up at your store, you see their pattern immediately. No raw PII leaves any merchant - only hashed signals and aggregate counts.
Card refund history
Per-card refund counts across Sentinel merchants in the last 30 days. Serial refunders hitting three, five, ten merchants surface the moment they request a refund at yours.
If you run Evidence Vault, Sentinel automatically uses 3DS, AVS, and CVC data from purchase to sharpen the score. Otherwise, Sentinel works on the network signals alone.
Simple pricing
One caught refund on a $50 order pays for the month.
How it works
Install
Install Sentinel from the Stripe App Marketplace. No webhooks to configure, no code to ship. Your 14-day trial starts when you enable scoring.
Review
When a customer requests a refund, open the charge in Stripe. Sentinel shows a score and the factors behind it before you click Refund.
Decide
Approve, request proof, or decline. Every decision feeds the abuse network and raises the floor for every other Sentinel merchant.
The network compounds
Sentinel's value scales with the network. Early merchants see thinner signal; every install after yours sharpens every score you see. We're transparent about this: when the network has no history on a card, Sentinel tells you, no guessing. When it does, you see exactly how many merchants the card has hit and how recently. If you want a mature, large-network product today, Signifyd costs 1-3% of revenue and targets enterprise. Sentinel is the SMB-priced alternative - flat monthly, no minimums, no success fees.
Better together
Vault captures authentication data at purchase. Sentinel uses it to score refunds. Reflex defends the disputes that slip through. Running all three gets you Reflex bundle pricing ($39/month for Sentinel).