ISBN lookup, book by ISBN

$0.01 per call · failed calls are never charged · no account or subscription: pay per call with a card key or USDC

Look up a book by its ISBN-10 or ISBN-13 (hyphens and spaces allowed): title, subtitle, authors, publishers, publish date, page count, subjects, language, cover image and Open Library link, from Open Library's catalogue (CC0). The ISBN check digit is verified first; an invalid or unknown ISBN is refused uncharged. Use to enrich a reading list, a product listing or a citation.

Run it free (25 free calls) Buy credits by card (from $1) Example result (JSON)

Try it with your own inputs

ISBN-10 or ISBN-13, with or without hyphens

Uses one of your 25 free calls. Nothing is charged, and a call that fails is not counted.

Inputs

NameTypeDescription
isbn (required)stringISBN-10 or ISBN-13, with or without hyphens

Request

Over HTTP, with a card key from /credits:

curl -H "Authorization: Bearer adt_…" "https://agent-data-tools.revmesh2074.workers.dev/book/isbn?isbn=9780140328721"

Or one of your 25 free calls, no key:

curl "https://agent-data-tools.revmesh2074.workers.dev/book/isbn?isbn=9780140328721&trial=1"

Without a key, the same URL answers 402 Payment Required with x402 and MPP terms, so an agent with a wallet pays per call in USDC (Base, Polygon, Arbitrum or Solana over x402; Base or Tempo over MPP) and retries.

Example result

{
  "isbn13": "9780140328721",
  "isbn10": "0140328726",
  "title": "Fantastic Mr. Fox",
  "subtitle": null,
  "authors": [
    "Roald Dahl"
  ],
  "publishers": [
    "Puffin"
  ],
  "publishDate": "October 1, 1988",
  "pages": 96,
  "subjects": [
    "Animals",
    "Hunger"
  ],
  "languages": [
    "eng"
  ],
  "cover": "https://covers.openlibrary.org/b/id/8739161-L.jpg",
  "openLibraryUrl": "http://openlibrary.org/books/OL7353617M/Fantastic_Mr._Fox",
  "otherIds": {
    "goodreads": "1507552",
    "openlibrary": "OL7353617M"
  },
  "source": "Open Library (openlibrary.org), catalogue data CC0"
}

From an AI agent (MCP)

Add the MCP server to Claude, Cursor or any MCP client. This tool is book_isbn, and the first 25 successful calls are free:

https://agent-data-tools.revmesh2074.workers.dev/mcp

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