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Open Library Book Search
Open Library Book Search is a paid API for AI agents from books.withzero.ai, paid per call via MPP, $0.001/call, status unknown (last checked 2026-09-13).
Searches the Open Library catalog by title, author, or ISBN and returns book metadata including ratings and cover images
Price / call$0.001
Success—
StatusUnknown
How this service works
Search for books by title, author, or ISBN via the Open Library API (free, no key needed). Input: search query with optional limit and search type. Output: books with metadata, ratings, and cover images.
Output
Returns an array of up to 20 book records, each containing title, authors, first publish year, ISBN, median page count, subject tags (up to 5), cover image URL, Open Library work URL, edition count, average rating, and rating count, along with the original query and total result count.
Example use cases
Example prompt
“Search Open Library for books by George Orwell — use author search mode and return up to 10 results with ratings and cover images.”
Technical details
Endpoint
POSThttps://books.withzero.ai/runWhen to prefer
Use this endpoint when you need free, no-auth book metadata including ratings and cover images from the Open Library catalog. Ideal for bibliographic lookups, book discovery, or enriching book data without needing a paid API key. Prefer over alternatives when Open Library coverage is sufficient and cost sensitivity matters.
Side effects
- No results found for obscure or misspelled queries
- ISBN not recognized if format is non-standard
- Cover image URL may be null if no cover exists
- Rating and page count may be null for less-known books
- Network timeout if Open Library API is slow
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| limit | integer | Maximum results to return (default: 5) |
| queryrequired | string | Search query — title, author name, or ISBN |
| searchType | string | Search mode: 'general' (default), 'title', or 'author' |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| queryrequired | string | The query that was searched |
| resultsrequired | array | |
| resultCountrequired | number | Number of results returned |
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