How to Choose the Best Books API in 2026
There are 23 Books APIs in our directory. Of these, 17 require no authentication, making them ideal for quick prototyping. 17 are rated beginner-friendly.
Last updated: April 2026
Quick Comparison: Top 10 Books APIs
| Name | Auth | HTTPS | CORS | Difficulty |
|---|---|---|---|---|
| A Bíblia Digital | API Key | ✓ | ✗ | Intermediate |
| Bhagavad Gita | API Key | ✓ | ✓ | Intermediate |
| Bhagavad Gita | OAuth | ✓ | ✓ | Advanced |
| Bhagavad Gita telugu | No Auth | ✓ | ✓ | Beginner |
| Bible-api | No Auth | ✓ | ✓ | Beginner |
| British National Bibliography | No Auth | ✗ | ? | Beginner |
| Crossref Metadata Search | No Auth | ✓ | ? | Beginner |
| Ganjoor | OAuth | ✓ | ✓ | Advanced |
| Google Books | OAuth | ✓ | ? | Advanced |
| GurbaniNow | No Auth | ✓ | ? | Beginner |
Free Books APIs (No Auth)
These APIs require no API key or signup. Start using them immediately.
Bhagavad Gita telugu
⭐ Beginner's PickBhagavad Gita Telugu API delivers all Gita verses in Telugu and Odia languages with no authentication required.
Bible-api
⭐ Beginner's PickBible-api.com is a free, no-auth REST API that returns Bible verses and passages in multiple translations using a simple URL pattern.
British National Bibliography
The British National Bibliography API exposes Linked Data about books published in the UK and Ireland, including titles, authors, ISBNs, and subject classifications.
Crossref Metadata Search
⭐ Beginner's PickCrossref Metadata Search provides free REST access to bibliographic metadata for over 140 million scholarly articles, books, and conference papers indexed by DOI.
GurbaniNow
GurbaniNow provides programmatic access to fast and accurate gurbani restful api via REST API.
Gutendex
⭐ Beginner's PickGutendex exposes the full Project Gutenberg catalogue—over 70,000 free ebooks—as a clean JSON API.
Try It in 5 Minutes: Bhagavad Gita telugu
Quick implementation example using Bhagavad Gita telugu.
Using curl
curl https://gita-api.vercel.app
JavaScript
const url = "https://gita-api.vercel.app/";
const response = await fetch(url);
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data); New to APIs? Read our Getting Started Guide →
Frequently Asked Questions
How many Books APIs are available?
There are 23 Books APIs in our directory as of 2026.
Are there free Books APIs?
Yes, 17 Books APIs require no authentication and are completely free to use.
What is the easiest Books API to use?
Bhagavad Gita telugu is one of the easiest to get started with. It is rated as beginner-level and requires no authentication.
Do I need an API key for Books APIs?
It depends. 17 APIs need no authentication, 3 require an API key, and 3 use OAuth.