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Open Library

Books, book covers and related data

BooksAuth: NoneHTTPS: YesCORS: noStatus: alive

Last verified: November 12, 2026

Reliability

100% uptime: the documentation responded in 5 of 5 checks over the last 30 days. Median response time: 643 ms.

How we check, and the most reliable APIs →

At a glance

// Fetch the docs page with cURL curl https://openlibrary.org/developers/api

History

  • November 12, 2026: last health check, responding

See every change to the directory →