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gateway.apiosk.com Financial Identifiers Card Validator
x402
gateway.apiosk.com Financial Identifiers Card Validator is a paid API for AI agents from gateway.apiosk.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).
Validates a credit/debit card number and returns the BIN, brand, last 4 digits, and validity status
Price / call$0.02
Success—
StatusUnknown
How this service works
Validate a payment card number with Luhn and classify the network from bundled static BIN range rules.
Output
Returns a JSON object with ok status, the BIN (first 6-8 digits), card brand (e.g. visa, mastercard), last 4 digits of the card, and a boolean valid flag indicating whether the card number passes validation.
Example use cases
Verify card before checkout
“Before I charge the customer, can you quickly check if this card number 5500005555555559 is valid and tell me the brand and BIN so I know it's safe to proceed?”
Flag invalid cards in fraud screening
“I'm reviewing a batch of card numbers from recent signups and need to know which ones fail validation — can you check 4000000000000002 and tell me if it passes the Luhn check, what brand it is, and pull the BIN for me?”
Identify card brand from number
“A user just entered their card number 378282246310005 in our form but didn't select a card type — can you tell me whether this is a Visa, Mastercard, Amex, or something else, and confirm it's a valid number?”
Technical details
Endpoint
POSThttps://gateway.apiosk.com/financial-identifiers/validate/cardWhen to prefer
Use this endpoint when you need to validate a payment card number before processing or storing it, identify the card brand and BIN programmatically, or verify card format in a checkout or fraud-screening workflow. It is a simple, low-cost per-call service ideal for real-time card validation at $0.02 USDC per call.
Side effects
- Invalid or malformed card number returns valid: false
- Missing card field in request body causes a 400 or error response
- Non-numeric characters in card number may cause parsing errors
- Very short or truncated card numbers may not resolve a BIN
Tags
x402
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