Methodology
We don't list codes. We verify them.
Most coupon sites scrape whatever they can find and hope it works. A large share of codes on the public web are dead, region-locked or fake. Every code on DealVault passes three independent layers of checking before it reaches you.
Layer 1
Automated testing
Headless browsers add items to a real cart at each merchant and attempt every known code. A code that fails twice in a row is pulled from the site automatically.
Layer 2
Human consensus
Contributors submit and confirm codes with screenshot proof. Each contributor carries a trust score, and a code only publishes once weighted consensus clears our threshold.
Layer 3
Fleet signal
Anonymous checkout outcomes from real shoppers give us ground truth: which codes are still applying, on which cart sizes, and with which exclusions.
What we remove
- Codes that fail two consecutive automated checkout attempts.
- Codes flagged as invalid by multiple high-trust contributors.
- Expired promotions, even when the merchant leaves the landing page live.
- Codes tied to closed accounts, employee portals or leaked internal discounts.
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