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Vextorium Book Info API
x402
Vextorium Book Info API is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-28).
Retrieves book metadata (title, authors, publisher, year, pages, subjects, cover) by ISBN or title/author search via Open Library
Price / call$0.002
Success—
StatusUnknown
How this service works
244 pay-per-call data APIs for AI agents: official statistics and economy (ECB, Fed, Eurostat, World Bank, SEC, BOE, INE), crypto prices and sentiment, Spanish public data, compliance (sanctions, VAT, IBAN, LEI), science, weather, web and developer tools and local AI text tools. Pay in USDC via x402.
Output
Returns a JSON object with the book's title, subtitle, authors array, publishers array, publication date, ISBN, page count, topics/subjects array, cover image URL (from Open Library covers), a link to the Open Library record, and source attribution. Fields may be null if not available in Open Library.
Example use cases
ISBN barcode scanner enrichment
“I scanned the barcode on a book and got ISBN 9780062316097 — can you pull up the full details including title, author, publisher, year, subjects, and cover image?”
Reading list metadata builder
“I'm building a reading list and need info on 'The Hitchhiker's Guide to the Galaxy' by Douglas Adams — get me the publisher, publication year, page count, and cover art from Open Library.”
Author bibliography lookup
“Search for books by Ursula K. Le Guin titled 'The Left Hand of Darkness' and give me the full bibliographic details including ISBN, subjects, and Open Library link.”
Technical details
Endpoint
POSThttps://api.vextorium.com/v1/book-info?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need structured bibliographic metadata for a specific book identified by ISBN or title/author, especially when Open Library coverage is sufficient (broad catalog of published books). Prefer this over general web scraping when you need clean structured fields like page count, subjects, and cover image URL in a single call. Best for book apps, reading list builders, library tools, and agents that need to enrich book records.
Side effects
- ISBN not found in Open Library — returns null or empty result fields
- Invalid ISBN format — may return no match
- Title/author search returns wrong or multiple books — only one result returned
- Book exists in Open Library but has incomplete metadata — many fields null
- Network timeout or Open Library API downtime — service unavailable error
- No results found for obscure or out-of-print titles
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| isbn | string | |
| limit | integer | |
| title | string | |
| author | string |
Output
Schema · Response
{
"type": "json",
"example": {
"books": [
{
"date": "1967-01-01",
"pages": null,
"title": "Cien años de soledad",
"genres": [
"magic realism"
],
"isbn10": null,
"isbn13": null,
"authors": [
"Gabriel García Márquez"
],
"wikidata": "https://www.wikidata.org/wiki/Q178869",
"languages": [
"Spanish"
],
"publishers": []
}
],
"total": 1,
"search": {
"title": "One Hundred Years of Solitude",
"author": null
},
"source": "Wikidata (structured data released under CC0)"
}
}Tags
x402
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