API archive entry · source-reported
Gutendex
Web-API for fetching data from Project Gutenberg Books Library
Other Books APIs
These records share a directory category and are ordered by similarity of reported access facts. They are a shortlist, not proof of drop-in compatibility.
Rig Veda
Gods and poets, their categories, and the verse meters, with the mandal and sukta number
No auth · HTTPS reported · CORS Unknown
Crossref Metadata Search
Books & Articles Metadata
No auth · HTTPS reported · CORS Unknown
GurbaniNow
Fast and Accurate Gurbani RESTful API
No auth · HTTPS reported · CORS Unknown
Wolne Lektury
API for obtaining information about e-books available on the WolneLektury.pl website
No auth · HTTPS reported · CORS Unknown
BookRank
Book rankings from open reader ratings: books, series, reading orders and authors
No auth · HTTPS reported · CORS Yes
Greenlit Books
Catalog of practical AI books with search, series, glossary and a claim ledger
No auth · HTTPS reported · CORS Yes
How to compare them
Coverage
Compare exact endpoints, fields, geography, history, and update frequency.
Operating cost
Model request volume, caching, overages, support, and migration cost.
Integration risk
Test auth, errors, pagination, latency, versioning, and outage behavior.
Data rights
Review attribution, redistribution, retention, privacy, and commercial-use terms.
Source reference
This page separates source-reported facts from questions that need live provider verification.