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Delx Commerce Luhn Check
x402
Delx Commerce Luhn Check is a paid API for AI agents from commerce.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-01).
Validates a card or ID number using the Luhn algorithm to detect if it is structurally valid
Price / call$0.001
Success—
StatusUnknown
How this service works
Pay-per-result APIs for agents. No signup. Exact price. Verifiable delivery. USDC on Base + Solana via x402.
Output
Returns a JSON response indicating whether the submitted number passes the Luhn checksum algorithm, typically including a boolean validity flag and possibly the computed check digit or checksum result.
Example use cases
Pre-submission card number validation
“Before I submit this payment form, can you check whether the card number 4532015112830366 passes the Luhn algorithm so I know if it's a real card number or a typo?”
Fraud screening for entered card digits
“A user just entered the card number 1234567890123456 on our checkout page — can you run a Luhn check to see if it's structurally valid before we even attempt to charge it?”
Batch data quality check on stored card numbers
“I have this card number 4111111111111112 from our database and I'm not sure it's correct — can you validate it with a Luhn check to see if the checksum is right?”
Technical details
Endpoint
POSThttps://commerce.delx.ai/api/v1/x402/luhn-check?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a lightweight, no-signup, pay-per-result Luhn validation with verifiable delivery settled in USDC on Base or Solana via x402 — ideal for AI agents that need on-demand card number integrity checks without maintaining API keys or subscriptions.
Side effects
- Missing or malformed card number input returns a 400 error
- Non-numeric input may return a validation error
- Payment failure via x402 (insufficient USDC balance) blocks the request
- Empty body or missing required fields returns a schema validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| outputrequired | object |
Output
Schema · Response
{
"type": "json",
"example": {}
}Tags
x402
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