{"uid":"cap_96rDo-eOZkSkE4Gkrraw2","slug":"strale-isbn-validator-5892e8d5","name":"Strale ISBN Validator","description":"The trust layer for AI agents — 250+ independently tested data capabilities across 27 countries. Execute capabilities via REST, MCP, A2A, or x402 micropayments. Every call returns an audit record with cryptographic chain hashing.","url":"https://api.strale.io/x402/v2/isbn-validate","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","required":["isbn"],"properties":{"isbn":{"type":"string","description":"ISBN-10 or ISBN-13 (e.g. 978-3-16-148410-0)"}}}},"additionalProperties":false}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.0216","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":"$0.0216/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0216","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0216","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_sIik16fUkr_pWr9XtFNa7","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.0216","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates ISBN-10 or ISBN-13 numbers, checking format correctness and checksum integrity with a cryptographic audit record.","exampleAgentPrompt":"Can you check whether the ISBN 978-3-16-148410-0 is a valid ISBN-13?","exampleUseCases":[{"title":"Book catalog data quality check","prompt":"I'm about to import a batch of books into our catalog — can you validate whether 978-0-306-40615-7 is a properly formatted and checksummed ISBN-13?"},{"title":"E-commerce listing validation","prompt":"Before we publish this product listing, can you confirm that the ISBN 0-306-40615-2 is a valid ISBN-10 so we don't put bad data live?"},{"title":"Library system ingestion pipeline","prompt":"We just received a book record with the identifier 978-1-86197-876-9 — can you verify it's a legitimate ISBN so the system can accept it?"}],"resultDescription":"Returns a validation result indicating whether the submitted ISBN-10 or ISBN-13 is correctly formatted and passes its checksum, along with a cryptographic audit record that chains the call for traceability.","failureModes":["Missing 'isbn' query parameter returns a validation error","Malformed ISBN string (wrong length, invalid characters) may return invalid result rather than an error","Network or service downtime returns HTTP 5xx","Invalid payment or insufficient USDC balance may block the request under x402 protocol"],"whenToPreferThis":"Choose this endpoint when you need a verifiable, auditable ISBN validation with a cryptographic chain record — particularly useful in publishing pipelines, compliance workflows, or multi-agent systems where tamper-evident audit trails are required. Prefer this over simple regex checks when you need a trusted, independently-tested validation result.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T01:19:00.805Z","isFirstParty":false}