Identifier check-digit validation API

Validate the check digit of common identifiers: credit-card & IMEI (Luhn), ISIN & CUSIP (securities), VIN (vehicles), EAN-13/UPC-A (products), ABA routing numbers, ISBN-10/13. Each uses a different fiddly algorithm. Answers 'is this ISIN valid', 'validate this VIN', 'is this a valid routing number', 'check this barcode/ISBN'.

Price$0.01per request

MethodPOST

Route/v1/util/identifier

StatusLive

MIME typeapplication/json

Rate limit120/minute

CacheNo cache

utilvalidationchecksumisincusipvinluhnisbn

API URLhttps://x402.hexl.dev/v1/util/identifier

Integration docs

Example request

{
  "type": "isin",
  "value": "US0378331005"
}

Example response

{
  "type": "isin",
  "value": "US0378331005",
  "valid": true
}

Input schema

{
  "type": "object",
  "required": [
    "type",
    "value"
  ],
  "properties": {
    "type": {
      "type": "string",
      "enum": [
        "luhn",
        "card",
        "imei",
        "isin",
        "cusip",
        "vin",
        "ean",
        "upc",
        "routing",
        "isbn"
      ]
    },
    "value": {
      "type": "string",
      "examples": [
        "US0378331005"
      ]
    }
  }
}

Output schema

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