{"uid":"cap_Ob2KFgJxUbtKAF4nYlYs9","slug":"upc-e-luhn-check-cab935ff","name":"UPC-E Luhn Check","description":"Call when an agent needs whether an 8-digit UPC-E-shaped number passes Luhn. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/check-upc-e first.","url":"https://agentshelf.syntexa.ch/v1/check-upc-e?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":["123"],"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_xc6WJEihwnTVtCnt-UWDi","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 an 8-digit UPC-E barcode number passes the Luhn algorithm check digit verification.","exampleAgentPrompt":"Can you check whether the UPC-E barcode '01234565' passes the Luhn algorithm validity check?","exampleUseCases":[{"title":"Validate product barcode before listing","prompt":"I'm about to import product data into our catalog — can you check if this UPC-E barcode '04252614' has a valid Luhn check digit before I push it live?"},{"title":"Scan result integrity check","prompt":"Our scanner just read '01234565' as a UPC-E code — can you confirm this barcode number actually passes the Luhn check?"},{"title":"Batch pre-screen single entry","prompt":"We received a supplier product sheet with UPC-E code '02345671' — please verify whether that number's check digit is correct via Luhn before we accept it."}],"resultDescription":"Returns a boolean or structured result indicating whether the provided 8-digit UPC-E number passes the Luhn algorithm check digit validation.","failureModes":["Input string is not 8 digits — validation fails or returns error","Non-numeric characters in input cause rejection","Empty or missing value field returns error","String exceeds maxLength or is less than 1 character"],"whenToPreferThis":"Use this endpoint when you need to verify that an 8-digit UPC-E barcode passes the Luhn check digit algorithm. Prefer the free sandbox endpoint POST /v1/sandbox/check-upc-e during development and testing to avoid the $0.01 USDC charge. Use this paid endpoint for production validation workflows where reliability is required.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-25T06:46:27.463Z","isFirstParty":false,"canonicalSlug":"upc-e-luhn-check-cab935ff"}