{"uid":"cap_3bmmXAIt1zKsgt7ElP2-r","slug":"agentshelf-isbn-10-checksum-validator-f119aa00","name":"AgentShelf ISBN-10 Checksum Validator","description":"Call when an agent needs whether an ISBN-10 checksum is valid. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/check-isbn-10 first.","url":"https://agentshelf.syntexa.ch/v1/check-isbn-10?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":["0306406152"],"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":"0.004","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":"$0.004/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_blKdaHq5WulTxAe8lpnjJ","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.004","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates whether a given ISBN-10 string has a correct checksum digit","exampleAgentPrompt":"Can you check if the ISBN-10 '0306406152' has a valid checksum?","exampleUseCases":[{"title":"Book catalog data integrity check","prompt":"Before I add this book to our catalog, can you verify that the ISBN-10 '0471958697' has a valid checksum so I know the identifier isn't corrupted?"},{"title":"User-submitted ISBN validation","prompt":"A user just entered '0201633610' as the ISBN-10 for a book order — can you confirm whether that checksum is actually valid before we proceed?"},{"title":"Bulk book import pre-screening","prompt":"I'm about to import a book record and the ISBN-10 is '0596517742' — can you quickly validate the check digit for me?"}],"resultDescription":"Returns a boolean or status indicating whether the provided ISBN-10 string passes the standard Modulus 11 checksum algorithm, confirming if the identifier is structurally valid.","failureModes":["Input string is empty or missing — returns error due to minLength constraint","Input longer than 20000 characters — rejected by maxLength","Malformed JSON body — HTTP 400 or parse error","Payment of $0.004 USDC not provided — HTTP 402 Payment Required","Input is an ISBN-13 rather than ISBN-10 — may return invalid or misapplied result"],"whenToPreferThis":"Use this endpoint when you need a deterministic, no-LLM, no-network ISBN-10 checksum validation without building the Modulus 11 algorithm yourself. Prefer the free sandbox endpoint POST /v1/sandbox/check-isbn-10 for testing; use this paid endpoint in production workflows where reliability and a verified response matter. Not suitable for ISBN-13 validation.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T02:16:04.293Z","isFirstParty":false,"canonicalSlug":"agentshelf-isbn-10-checksum-validator-f119aa00"}