Free Books APIs with no API key

20 Books APIs that need no API key, account or credit card. 14 of them also allow CORS, so you can call them straight from browser JavaScript. Listed by uptime and ease of use.

1. 1

   Greenlit Books API

   Online · 1178 ms

   Catalog of practical AI books with search, series, glossary and a claim ledger.

   • No API key needed
   • Callable from the browser (CORS)
   • HTTPS

   No authHTTPSCORS
2. 2

   KDP Intelligence API

   Online · 1181 ms

   KDP niche demand scores, competition analysis and revenue estimates.

   • No API key needed
   • Callable from the browser (CORS)
   • HTTPS

   No authHTTPSCORS
3. 3

   PoetryDB API

   Online · 623 ms

   Enables you to get instant data from our vast poetry collection.

   • No API key needed
   • Callable from the browser (CORS)
   • HTTPS

   No authHTTPSCORS
4. 4R

   Runyankole Bible API

   Online · 1069 ms

   Free REST API for the Runyankore-Rukiga Bible — 66 books, 31106 verses.

   • No API key needed
   • Callable from the browser (CORS)
   • HTTPS

   No authHTTPSCORS
5. 5T

   Thirukkural API

   Online · 814 ms

   1330 Thirukkural poems and explanation in Tamil and English.

   • No API key needed
   • Callable from the browser (CORS)
   • HTTPS

   No authHTTPSCORS
6. 6

   Wizard World API

   Online · 1084 ms

   Get information from the Harry Potter universe.

   • No API key needed
   • Callable from the browser (CORS)
   • HTTPS

   No authHTTPSCORS
7. 7

   BookRank API

   Online · 1311 ms

   Book rankings from open reader ratings: books, series, reading orders and authors.

   • No API key needed
   • Callable from the browser (CORS)
   • HTTPS

   No authHTTPSCORS
8. 8

   Penguin Publishing API

   Online · 2410 ms

   Books, book covers and related data.

   • No API key needed
   • Callable from the browser (CORS)
   • HTTPS

   No authHTTPSCORS
9. 9

   Quran API

   Online · 2855 ms

   RESTful Quran API with multiple languages.

   • No API key needed
   • Callable from the browser (CORS)
   • HTTPS

   No authHTTPSCORS
10. 10

    Quran Cloud API

    Online · 1880 ms

    A RESTful Quran API to retrieve an Ayah, Surah, Juz or the entire Holy Quran.

    • No API key needed
    • Callable from the browser (CORS)
    • HTTPS

    No authHTTPSCORS
11. 11

    Quran-api

    Online · 1808 ms

    Free Quran API Service with 90+ different languages and 400+ translations.

    • No API key needed
    • Callable from the browser (CORS)
    • HTTPS

    No authHTTPSCORS
12. 12

    Urantia Papers API

    Online · 1200 ms

    Full-text + semantic search across the Urantia Papers, with audio narration, entities, translations.

    • No API key needed
    • Callable from the browser (CORS)
    • HTTPS

    No authHTTPSCORS
13. 13B

    Bible-api

    Online · 1322 ms

    Free Bible API with multiple languages.

    • No API key needed
    • Callable from the browser (CORS)
    • HTTPS

    No authHTTPSCORS
14. 14

    Crossref Metadata Search API

    Online · 755 ms

    Documentation for Crossref's REST API.

    • No API key needed
    • HTTPS

    No authHTTPSCORS ?
15. 15

    Wolne Lektury API

    Online · 1079 ms

    API for obtaining information about e-books available on the WolneLektury.pl website.

    • No API key needed
    • HTTPS

    No authHTTPSCORS ?
16. 16B

    Bhagavad Gita telugu API

    Online · 1250 ms

    Bhagavad Gita API in telugu and odia languages.

    • No API key needed
    • Callable from the browser (CORS)
    • HTTPS

    No authHTTPSCORS
17. 17

    Open Library API

    Online · 1547 ms

    Books, book covers and related data.

    • No API key needed
    • Returns JSON at its URL
    • HTTPS

    No authHTTPSNo CORS
18. 18G

    Gutendex API

    Online · 10846 ms

    Web-API for fetching data from Project Gutenberg Books Library.

    • No API key needed
    • HTTPS

    No authHTTPSCORS ?
19. 19

    GurbaniNow API

    Last check failed

    Fast and Accurate Gurbani RESTful API.

    • No API key needed
    • HTTPS

    No authHTTPSCORS ?
20. 20B

    British National Bibliography API

    Last check failed

    Books. A free books API by bnb.data.bl.uk.

    • No API key needed

    No authNo HTTPSCORS ?

Keyless Books APIs compared

Books APIs with no API key

API	API key	HTTPS	CORS	Uptime	Response	Rating
Greenlit Books	No	Yes	Yes	Up	1178 ms	Not rated
KDP Intelligence	No	Yes	Yes	Up	1181 ms	Not rated
PoetryDB	No	Yes	Yes	Up	623 ms	Not rated
RRunyankole Bible	No	Yes	Yes	Up	1069 ms	Not rated
TThirukkural	No	Yes	Yes	Up	814 ms	Not rated
Wizard World	No	Yes	Yes	Up	1084 ms	Not rated
BookRank	No	Yes	Yes	Up	1311 ms	Not rated
Penguin Publishing	No	Yes	Yes	Up	2410 ms	Not rated
Quran	No	Yes	Yes	Up	2855 ms	Not rated
Quran Cloud	No	Yes	Yes	Up	1880 ms	Not rated
Quran-api	No	Yes	Yes	Up	1808 ms	Not rated
Urantia Papers	No	Yes	Yes	Up	1200 ms	Not rated
BBible-api	No	Yes	Yes	Up	1322 ms	Not rated
Crossref Metadata Search	No	Yes	Unknown	Up	755 ms	Not rated
Wolne Lektury	No	Yes	Unknown	Up	1079 ms	Not rated
BBhagavad Gita telugu	No	Yes	Yes	Up	1250 ms	Not rated
Open Library	No	Yes	No	Up	1547 ms	Not rated
GGutendex	No	Yes	Unknown	Up	10846 ms	Not rated
GurbaniNow	No	Yes	Unknown	Down	–	Not rated
BBritish National Bibliography	No	No	Unknown	Down	–	Not rated

See also: best Books APIs · all 26 Books APIs · every API with no key