Merchant locks for single-use cards

Single-use cards already close after one payment. With merchant locks, you can also say exactly where that one payment is allowed to go. Set merchant_lock when you issue the card and any charge from a different merchant is declined before it reaches the network.

Locks match on the merchant name and category the card network reports, not on a web address, so a checkout page that redirects through a payment provider still matches the merchant you meant.

Most agent spend is boring and predictable. Locks make the predictable part automatic, so the human only sees the surprises.

Merchant locks are available on every plan and work alongside budgets, category rules and approval thresholds.