{"uid":"cap_HUBLC6S8tJijbcQcV88Dm","slug":"signaldesk-ai-luhn-check-4904ae01","name":"SignalDesk AI Luhn Check","description":"Evidence-backed autonomous AI jobs and paid data tools. Queue/D1/cron run outside the chat; free quotas and bounded execution apply.","url":"https://x402-agent.kariguetoazul.workers.dev/api/network/luhn-check?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"number":{"type":"string","maxLength":64,"description":"Sample checksum number; do not send real payment credentials."}}},"responseSchema":{"type":"json","example":{"valid_checksum":true,"account_verified":false}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_jY2bijiEMB7NgHvSsabgb","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates whether a numeric string passes the Luhn checksum algorithm, returning a boolean validity result","exampleAgentPrompt":"Can you run a Luhn checksum check on the number '4532015112830366' to see if it passes basic validity?","exampleUseCases":[{"title":"Pre-processing card number validation","prompt":"Before I submit this card number '4111111111111111' to a payment form, can you check if it at least passes the Luhn checksum so I know the format is correct?"},{"title":"Validating generated test card numbers","prompt":"I generated a test card number '4539578763621486' for my sandbox environment — can you run a Luhn check on it to confirm it's structurally valid before I use it?"},{"title":"Checking account identifier integrity","prompt":"I have this account identifier '79927398713' and I want to verify it passes the Luhn algorithm — can you do a quick checksum validation on it?"}],"resultDescription":"Returns a JSON object with 'valid_checksum' (boolean indicating whether the number passes the Luhn mod-10 algorithm) and 'account_verified' (boolean, typically false as this is a format check only, not a live account lookup)","failureModes":["Input number contains non-numeric characters causing validation error","Number exceeds maxLength of 64 characters","Missing 'number' field in request body","Real payment credentials submitted (against usage policy — endpoint is for sample/test numbers only)","Network timeout from Cloudflare Worker under load"],"whenToPreferThis":"Use this endpoint when you need a fast, cheap ($0.001 USDC) server-side Luhn checksum validation on a numeric string — especially when you want an authoritative computation rather than a client-side implementation. Best for validating test or synthetic card numbers before using them in workflows, or verifying identifier integrity. Do not use for live account lookups or real payment credential validation.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-13T00:42:08.767Z","isFirstParty":false,"canonicalSlug":"signaldesk-ai-luhn-check-4904ae01"}