Credit Card Validator API

Check a payment card number's format: brand from its IIN prefix, length and Luhn check digit. Does not contact any bank or check whether the card exists.

POST /api/v1/tools/credit-card-validatorMCP credit_card_validatorSecurity & Privacy

Check a card number with the Luhn algorithm, detect Visa, Mastercard, Amex and other brands, check the length and format it. Bulk mode included, all offline.

Input

Send these as a JSON object. Unknown fields are rejected.

number: The card number; spaces and dashes are ignored. Use test numbers such as 4111 1111 1111 1111, never real cards. (string, up to 40 characters, required)

Try it in the browser JSON Schema Get an API key

curl https://pithlab.com/api/v1/tools/credit-card-validator \n  -H "Authorization: Bearer $PITHLAB_KEY" \n  -H "Content-Type: application/json" \n  -d '{"number":"4111 1111 1111 1111"}'

Example response

{
  "ok": true,
  "result": {
    "valid": true,
    "brand": "Visa",
    "luhn": true,
    "lengthOk": true,
    "digits": 16,
    "formatted": "4111 1111 1111 1111",
    "messages": []
  }
}