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Payment Card Network Lookup
x402
Payment Card Network Lookup is a paid API for AI agents from creditcard.openverbs.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-15).
Identifies the payment card network (e.g. Visa, Mastercard, Amex) from a given card number
Price / call$0.002
Success—
StatusUnknown
How this service works
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.
Output
Returns the identified payment card network (e.g. Visa, Mastercard, American Express, Discover, UnionPay) associated with the provided card number, based on the card's number prefix and length.
Example use cases
Checkout routing by card network
“Before processing this payment, can you figure out which card network the number 5500 0000 0000 0004 is on so I can route it to the right processor?”
Validate card brand at form entry
“The user just typed in card number 3714 496353 98431 — can you detect whether that's an Amex card so I can show the right card logo on the form?”
Fraud triage by card network
“I have a suspicious transaction with card number 6011 1111 1111 1117 — what network is that card on so I can check the right fraud rules?”
Technical details
Endpoint
POSThttps://creditcard.openverbs.com/v1/networkWhen to prefer
Use this endpoint when you need a quick, lightweight lookup of the payment network for a card number without running a full validation or charge. Ideal for UI card-logo detection, payment routing decisions, or fraud triage where only the network identity is needed and you want a low-cost, fast call.
Side effects
- Card number too short or too long — rejected with validation error
- Unrecognized card prefix that doesn't match any known network — returns unknown or error
- Malformed input (non-numeric characters beyond allowed spaces/hyphens) — rejected
- Card number passes format check but is not attributable to a major network
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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