# Books and Libraries

Book lookup by ISBN, book and author search, author works, subject lists, reading time and citation formatting from Open Library.

## How to pay

Machine-payable over x402. USDC on: Base (eip155:8453), Solana (solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp), Polygon (eip155:137), Arbitrum One (eip155:42161).
No accounts. No API keys. No signup. The paying wallet is the account.

## Machine-readable

- OpenAPI: https://books-library.x402tookit.com/openapi.json
- x402 manifest: https://books-library.x402tookit.com/.well-known/x402
- Catalog (free): https://books-library.x402tookit.com/catalog
- Health (free): https://books-library.x402tookit.com/health
- Uptime (free): https://books-library.x402tookit.com/uptime

## Endpoints (7)

### GET /author-search — $0.02
Search authors by name: Open Library author ids, birth and death years, work counts and top works to tell namesakes apart.
Params: name: string, limit?: integer
Example: https://books-library.x402tookit.com/author-search?name=frank+herbert&limit=3

### GET /author-works — $0.03
An author's profile and catalogued works by Open Library author id: dates, links and the titles of their works.
Params: authorId: string, limit?: integer
Example: https://books-library.x402tookit.com/author-works?authorId=OL79034A&limit=10

### GET /book-by-isbn — $0.02
Book details for an ISBN: title, authors, publisher, publish date, pages, subjects and cover link, from Open Library.
Params: isbn: string
Example: https://books-library.x402tookit.com/book-by-isbn?isbn=9780306406157

### GET /book-search — $0.02
Search books by title or author words: matching works with authors, first publication year, edition count and ratings.
Params: q: string, limit?: integer
Example: https://books-library.x402tookit.com/book-search?q=dune+herbert&limit=5

### GET /citation-format — $0.02
Format a book citation in APA 7, MLA 9 and Chicago bibliography style from title, authors, year and publisher.
Params: title: string, authors: string, year: integer, publisher: string, city?: string
Example: https://books-library.x402tookit.com/citation-format?title=Dune&authors=Frank+Herbert&year=1965&publisher=Chilton+Books&city=Philadelphia

### GET /reading-time — $0.02
Estimate reading or audiobook time from pages or word count, at your reading speed, with hours per day to finish in N days.
Params: pages?: number, words?: number, wpm?: number, days?: number
Example: https://books-library.x402tookit.com/reading-time?pages=412&wpm=250&days=14

### GET /subject-books — $0.02
Books filed under a subject (science fiction, cooking, stoicism...): total count and sample works with authors and first year.
Params: subject: string, limit?: integer
Example: https://books-library.x402tookit.com/subject-books?subject=stoicism&limit=5

## Terms

Book facts come from Open Library, a community-edited catalogue run by the Internet Archive, and local computation, provided as is. Records can be incomplete, duplicated or wrong, and edition details vary. Citation formats follow common style-guide patterns but journals and instructors differ: check your style guide. Not bibliographic or legal advice.