Used for server-side operations. This key has the power to create charges, refund customers, and retrieve sensitive account data.
: Developers use SK keys to integrate secure payments into their websites. Checker Use cc checker with sk key
If you meant something else—like a legitimate payment integration, PCI-compliant card validation for your own site, or how to securely test payment flows with card test numbers and sandbox APIs—I can help with that. Tell me which of these you want: Used for server-side operations