Decionis Shield

Stop checkout charges you didn't okay — Shield checks the amount against your limits before you pay.

Decionis Shield helps you spot checkout charges that cross the spending limits you set before you pay. On supported checkout pages, Shield detects the displayed order amount and sends only the site host and amount to the Decionis API for evaluation. If a purchase or renewal exceeds your limit, it shows a warning and can open a cryptographically signed Dispute Passport with clear evidence for support. Use the popup to sign in with an email one-time code and check protection status. Privacy by design: • Runs only on an explicit list of checkout and payment sites. • Sends only the site host and detected checkout amount—not page content, form data, or browsing history. • Does not sell user data and contains no ads. Limitations: amount detection is best-effort, Shield warns rather than disabling the merchant's pay button, and protection applies only to the checkout sites listed in the extension permissions.