Tool detail

creditcard

Validates a credit card number via the Luhn algorithm and identifies its card brand; does not process payments.

Categories: Utilities

Use when

check whether a credit card number passes the Luhn checksum
identify a card's brand (Visa, Mastercard, Amex, etc.) from its number

Not for

not payment processing or charge capability — validation only
sends the card number to a third-party API — avoid using with real card data
not a check for active/funded status — format/Luhn validity only

Inputs

GET query param: card (string, optional per schema) — card number to validate

Admitted input schema

{
  "type": "object",
  "properties": {
    "card": {
      "type": "string",
      "minLength": 0,
      "maxLength": 4096,
      "description": "Card (optional)"
    }
  },
  "required": [],
  "additionalProperties": false
}

Endpoint

Method: GET
URL: https://api.x402node.dev/validate/creditcard

Payment

Protocol: x402
Listed price: 0.0022 USDC per call on Base
Payment method: exact
Network: eip155:8453
Asset: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Listed terms are catalog metadata. The caller supplies inputs and calls the tool outside Onelayer. If payment is required, the caller uses a compatible wallet to pay.

Source

Directory: Coinbase x402 Bazaar
Record: GET https://api.x402node.dev/validate/creditcard
Retrieved: 2026-09-30T20:37:07.382Z
Catalog file SHA-256: 6837ccddf886f0007cf3727ea9d27faaa5047b51b4f425345c554ce1c271a524
Catalog built: 2026-09-30T22:31:58.034Z