Validate a card number
creditcard.openverbs.com
Detect the issuing network/brand (Visa, Mastercard, American Express, Discover, Diners Club, JCB, UnionPay, Maestro) from the card's IIN prefix, with the network's valid lengths. Returns `network:null` for an unrecognized prefix.
- Category
- Service
- Networks
- Base
- Starting price
- $0.002
- Paid calls, 30 days
- 10
Paid endpoints
5 endpoints, sorted by usage. Prices are per request.
| Endpoint | Price | Network | Facilitator | Calls / 30d |
|---|---|---|---|---|
POST/v1/format Format a card number into the conventional display groups for its network (4-6-5 for Amex, 4-6-4 for 14-digit Diners, otherwise groups of four). | $0.002 | Base | Coinbase CDP | 2 |
POST/v1/generate Generate a random Luhn-valid TEST card number for the given network (default Visa). For testing only — these are not issued cards and cannot be charged. The response is always flagged `test:true`. | $0.002 | Base | Coinbase CDP | 2 |
POST/v1/mask Mask a card number for display, keeping the first six and last four digits (the PCI-permitted maximum) and replacing the rest with a mask character (default `*`). | $0.002 | Base | Coinbase CDP | 2 |
POST/v1/network Detect the issuing network/brand (Visa, Mastercard, American Express, Discover, Diners Club, JCB, UnionPay, Maestro) from the card's IIN prefix, with the network's valid lengths. Returns `network:null` for an unrecognized prefix. | $0.002 | Base | Coinbase CDP | 2 |
POST/v1/validate Validate a payment-card number: Luhn check-digit test plus network detection and length check. A syntactically valid number that fails Luhn returns `valid:false` (a 200, not an error). | $0.002 | Base | Coinbase CDP | 2 |
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