Validate a card number
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).
Visit creditcard.openverbs.com
| Host | creditcard.openverbs.com |
|---|---|
| Price | $0.002 per call |
| Network | Base |
| Paid endpoints listed | 5 |
| Calls, last 30 days* | 10 |
| Most unique payers on one endpoint (30 days)* | 2 |
| Last paid call* | 2026-10-08 |
| Tags | validate credit card, luhn check api, credit card validation, payment card validation, card number lookup, mask credit card, redact card number, pan masking api |
* From the public x402 Bazaar index (snapshot 2026-10-18T04:07Z); reported by the facilitator, not measured by us.
Endpoints
| URL | Method | Price |
|---|---|---|
https://creditcard.openverbs.com/v1/validateValidate a payment-card number: Luhn check-digit test plus network detection and length check. A syntactically valid… | POST | $0.002 |
https://creditcard.openverbs.com/v1/maskMask a card number for display, keeping the first six and last four digits (the PCI-permitted maximum) and replacing… | POST | $0.002 |
https://creditcard.openverbs.com/v1/networkDetect the issuing network/brand (Visa, Mastercard, American Express, Discover, Diners Club, JCB, UnionPay, Maestro)… | POST | $0.002 |
https://creditcard.openverbs.com/v1/generateGenerate a random Luhn-valid TEST card number for the given network (default Visa). For testing only — these are not… | POST | $0.002 |
https://creditcard.openverbs.com/v1/formatFormat a card number into the conventional display groups for its network (4-6-5 for Amex, 4-6-4 for 14-digit Diners,… | POST | $0.002 |
Source: x402 Bazaar discovery API (Coinbase CDP) · Licence: Public discovery metadata; descriptions by each provider. Listed in x402 pay-per-call APIs. We list tools; we do not test, rate or endorse them.
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