{"uid":"cap_AozeT5zayAHsdCnvTpafJ","slug":"eu-verify-isbn-lookup-530c91ea","name":"eu-verify ISBN Lookup","description":"Resolves an ISBN-10 or ISBN-13 to a normalized bibliographic record from Open Library (Internet Archive): title, authors, publishers, publish date, page count, ISBN identifiers, subjects and cover image URL. Query: ?isbn=9780140328721 (hyphens/spaces tolerated). Unknown ISBNs return 400 (not charged). 7-day cache. Built for catalog management, e-commerce listings and used-book pricing agents.","url":"https://data.greeneris.io/v1/books/isbn","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 (hyphens/spaces allowed)"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"isbn":"9780140328721","title":"Fantastic Mr. Fox","source":"Open Library (openlibrary.org, Internet Archive)","authors":["Roald Dahl"],"isbn_10":"0140328726","isbn_13":"9780140328721","subjects":["Animals","Hunger","Juvenile fiction","Foxes","Fiction"],"subtitle":null,"cover_url":"https://covers.openlibrary.org/b/id/15152634-L.jpg","publishers":["Puffin"],"publish_date":"October 1, 1988","openlibrary_id":"OL7353617M","number_of_pages":96,"openlibrary_url":"http://openlibrary.org/books/OL7353617M/Fantastic_Mr._Fox"}},"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_2gvPQFR1hVE_si5QaaZES","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 by ISBN (ISBN-10 or ISBN-13) including title, authors, cover, publishers, and subjects via Open Library","exampleAgentPrompt":"Can you look up the book details for ISBN 9780140328721 — I want the title, authors, publisher, and cover image?","exampleUseCases":[{"title":"Verify book details for library catalog","prompt":"I'm building a reading list and need you to look up the metadata for ISBN 9780062316097 — can you get me the title, all the authors, subjects, and a link to the cover image?"},{"title":"Check publisher and publication dates","prompt":"We're creating a bibliography for a research paper and need to verify the publisher and exact publication date for the book with ISBN 9781984826342. Can you pull that information for me?"},{"title":"Find book information by ISBN lookup","prompt":"A customer just gave me an ISBN 9780451524935 and I need to know what book that is, who wrote it, and whether we have it in our system — can you look that up quickly?"}],"resultDescription":"Returns a JSON object with the book's title, authors list, subtitle, ISBN-10, ISBN-13, subjects, cover image URL, publisher(s), publish date, number of pages, Open Library ID, and a direct link to the Open Library record.","failureModes":["ISBN not found in Open Library — empty or 404 response","Malformed ISBN input (non-numeric, wrong length) — validation error","Payment not completed via x402 — HTTP 402 with machine-readable price quote","Network timeout or Open Library upstream unavailability"],"whenToPreferThis":"Use this endpoint when you need to resolve bibliographic metadata for a known ISBN number and want structured data including cover art, authors, subjects, and publisher. Prefer it over general web search when you need machine-readable book data. Note: this is hosted on an EU business verification platform as a supplemental data endpoint, so it is available pay-per-call with no account needed.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T12:54:30.533Z","isFirstParty":false}