# ISBNdb

Category: [Books and research](https://free-web-services.com/web-services/documentation/)  
Page: https://free-web-services.com/web-services/documentation/isbndb.html  
Documentation: https://isbndb.com/isbndb-api-documentation-v2

ISBNdb has data on tens of millions of books. Look books up by ISBN, title, author, publisher or subject, and get the title, authors, publisher, edition, binding, page count, synopsis, cover image and prices. Responses are JSON. Paid plans with a free trial.

- API key: Needed, paid plans only
- Pricing: Paid plans with a free trial.
- From the browser: Yes (CORS)
- Formats: JSON
- Interface: REST, HTTP-GET
- Provider: isbndb.com
- Last checked: Working on November 8th, 2026

Example request:

```sh
curl 'https://api2.isbndb.com/book/9780134093413' \
  -H 'Authorization: YOUR_API_KEY'
```

Replace YOUR_API_KEY with your own key. The JavaScript works in a web page as well as in Node.js 18 or newer.