FAQ
Can I use these cards in live mode?
No. Test card numbers only work in the provider's sandbox/test environment and are declined in production.
What expiry date and CVC should I use?
Stripe accepts any future date and any CVC (4 digits for Amex). Adyen test cards mostly use expiry 03/2030 and CVC 737 (Amex 7373).
Where do these numbers come from?
From the official docs: Stripe testing and Adyen test cards. Providers update them — double-check their docs for edge scenarios.