{"uid":"cap_nnaITZYo-AYigVH_EgAnc","slug":"isbn-lookup-title-publisher-date-pages-ee798630","name":"ISBN Lookup: Title, Publisher, Date, Pages","description":"ISBN lookup: title, publisher, date, pages — Genesis402 / UnyKorn Operator Network","url":"https://twin.unykorn.org/research/isbn?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"params":{"type":"object","properties":{"isbn":{"type":"string","description":"required: ISBN-10 or ISBN-13"}}}}},"responseSchema":{"type":"json","example":{"ok":true,"type":"isbn-lookup","receipt":{"tx_hash":"0x<64hex>","amount_usd":0.002,"receipt_id":"g402-<16hex>"},"sources":[{"ok":true,"name":"<source>"}],"limitations":"<text>","generated_at":"<iso time>","evidence_hash":"sha256:<64hex>"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","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":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_J6aZiPHNR8HVYjCHIQuLm","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Looks up book metadata (title, publisher, publication date, page count) by ISBN-10 or ISBN-13","exampleAgentPrompt":"Can you look up the book details for ISBN 9780385333481 — I need the title, publisher, publication date, and number of pages?","exampleUseCases":[{"title":"Verify book details before purchase","prompt":"I have the ISBN 0140449116 — can you tell me the title, who published it, when it came out, and how many pages it is?"},{"title":"Enrich a reading list spreadsheet","prompt":"I'm building a reading list and need to fill in the metadata for these books. Start with ISBN 9780743273565 — what's the full title, publisher, publication date, and page count?"},{"title":"Validate ISBN for library catalog","prompt":"We just received a shipment and I need to verify what this book is — the ISBN on the spine is 9780062316097. What title, publisher, and publication year does that correspond to?"}],"resultDescription":"Returns bibliographic metadata for the given ISBN including the book's title, publisher name, publication date, and total page count.","failureModes":["ISBN not found in database — returns empty or error response","Malformed ISBN (wrong length or invalid check digit) — validation error","ISBN-10 vs ISBN-13 format mismatch may return no results depending on normalization","Out-of-print or obscure titles may have incomplete metadata (missing page count or publisher)","Network timeout or service unavailability — HTTP 5xx error"],"whenToPreferThis":"Use this endpoint when you need structured bibliographic metadata (title, publisher, date, pages) for a known ISBN and want a fast, low-cost ($0.002) single-book lookup. Prefer this over broader book search APIs when you already have the ISBN and just need to resolve it to human-readable metadata. Good for enriching datasets, validating catalog entries, or answering user questions about a specific book.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-03T00:47:57.779Z","isFirstParty":false,"canonicalSlug":"isbn-lookup-title-publisher-date-pages-ee798630"}