ISBNdb
Free trialLiveLast verified 28 Sept 2026
Book metadata by ISBN, title or author: publisher, binding, pages, subjects, synopsis, covers and list prices.
Example request
curl -s 'https://api2.isbndb.com/book/9780134093413' -H "Authorization: $API_KEY"
Free tier, in plain English
API access needs a paid plan, from $14.99 a month for 5,000 lookups a day; the Basic plan starts with a 7-day free trial. The free website account has no API access.
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