{"uid":"cap_W9Gt_71NWUdhpY2TD0fAz","slug":"discover-card-luhn-validator-b5de62a7","name":"Discover Card Luhn Validator","description":"Call when an agent needs whether a number passes Luhn and matches discover. Nothing is stored. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/check-card-discover first.","url":"https://agentshelf.syntexa.ch/v1/check-card-discover?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"data":{"description":"JSON value for schema-check SKUs. Omit it on string checks such as email or IBAN."},"value":{"type":"string","examples":["411111"],"maxLength":20000,"minLength":1,"description":"Value to check. The route description names the format: email, phone, IBAN, postal code, VAT, national id, or similar."},"schema":{"description":"JSON Schema document for schema-check SKUs. Omit it on string checks."}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_a7UZAySGYO1wyo_iMPPmb","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates whether a card number passes the Luhn algorithm and matches Discover card BIN patterns","exampleAgentPrompt":"Can you check if the card number 6011000990139424 is a valid Discover card — does it pass the Luhn check and match Discover's format?","exampleUseCases":[{"title":"E-commerce checkout card verification","prompt":"Before we process the order, can you verify that 6011111111111117 is actually a valid Discover card number and passes the Luhn check?"},{"title":"Form input validation before submission","prompt":"The user just typed in card number 6011000990139424 — can you confirm it's a properly formatted Discover card so we can move to the next step?"},{"title":"Fraud screening card network check","prompt":"I need to know if 6559906547834573 passes Luhn validation and is genuinely a Discover-network card — can you check that for me?"}],"resultDescription":"Returns whether the submitted card number passes the Luhn algorithm checksum and whether it matches Discover card BIN prefix patterns, with no data retained after the call.","failureModes":["Missing or empty value field returns validation error","Value exceeding 20000 characters rejected","Malformed JSON body returns 400-level error","Network or server error returns 5xx response","Payment of $0.01 USDC required; missing x402 payment header results in 402 Payment Required"],"whenToPreferThis":"Use this endpoint when you need to confirm a card number is both checksummed-valid (Luhn) and belongs specifically to the Discover network, with zero storage of sensitive data. Prefer the free sandbox endpoint POST /v1/sandbox/check-card-discover first if available. Choose this over generic Luhn-only checkers when Discover network identification is also required.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T06:46:49.594Z","isFirstParty":false,"canonicalSlug":"discover-card-luhn-validator-b5de62a7"}