x402-toolbox Card Luhn Check

x402

x402-toolbox Card Luhn Check is a paid API for AI agents from x402-toolbox.shablony-pro.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-02).

Validates a credit or debit card number using the Luhn algorithm to determine if it is structurally valid

Price / call$0.002

Seller volume →—

Success—

StatusUnknown

How this service works

309 deterministic pay-per-call tools for AI agents over x402 (USDC, Base). No signup, no API key: the payment is the identity.

Output

Returns a JSON object with an 'ok' boolean indicating whether the card number passes the Luhn algorithm check, and a 'paid' boolean confirming the micropayment was processed via x402.

Example use cases

Pre-payment card number sanity check

“Before I try to charge this card, can you verify the number 5500005555555559 passes a Luhn check so I know it's not obviously garbage?”

Form validation before submission

“A user just typed in card number 1234567890123456 on our checkout form — can you do a Luhn check and tell me if it's a valid card number so we can show an inline error before they hit submit?”

Bulk fraud screening for suspicious orders

“I have a card number 4000000000000002 from an order that looks suspicious — run a Luhn check on it and tell me if the number itself is even structurally valid.”

Technical details

Endpoint

GEThttps://x402-toolbox.shablony-pro.workers.dev/util/card-luhn-check?utm_source=zero.xyz

When to prefer

Use this endpoint when you need a fast, serverless, no-signup Luhn algorithm check on a card number and want to pay per-call in USDC via x402 with no API key required. Prefer it over full card validation services when you only need structural checksum verification, not bank-level card verification or BIN lookup.

Side effects

Missing or malformed schema/card number input returns an error or unexpected result
Invalid JSON schema string causes parsing failure
Non-numeric characters in card number may cause validation to fail or return false
Network or payment failure on x402 protocol returns a 402 Payment Required response

Input

Schema · Request body

Field	Type	Description
schema	string

Output

Schema · Response

{
  "type": "json",
  "example": {
    "ok": true,
    "paid": true
  }
}

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