Validate card / IBAN API

Validate a payment card number (Luhn checksum + brand detection) or an IBAN (mod-97 checksum + country). Answers 'is this card number valid', 'what card brand is this', 'validate this IBAN'.

Price$0.01per request

MethodPOST

Route/v1/util/card-validate

StatusLive

MIME typeapplication/json

Rate limit120/minute

CacheNo cache

utilluhncardibanvalidatechecksumpayment

API URLhttps://x402.hexl.dev/v1/util/card-validate

Integration docs

Example request

{
  "type": "card",
  "value": "4111 1111 1111 1111"
}

Example response

{
  "input": "4111 1111 1111 1111",
  "valid": true,
  "brand": "Visa",
  "length": 16
}

Input schema

{
  "type": "object",
  "required": [
    "type",
    "value"
  ],
  "properties": {
    "type": {
      "type": "string",
      "enum": [
        "card",
        "iban"
      ]
    },
    "value": {
      "type": "string"
    }
  }
}

Output schema

{
  "type": "object",
  "additionalProperties": true
}