Need a free, well-documented Bible API for your next project? Bolls Bible API gives developers instant access to Scripture text across 100+ translations in 29 languages — with endpoints for fetching chapters, individual verses, full-text search, parallel version comparison, and even Hebrew and Greek dictionary definitions via Brown-Driver-Briggs and Thayer's lexicons.^1
Built by Bohuslav Pavlyshinets, a Ukrainian developer, Bolls Bible started as a passion project in 2020 with a clear conviction: Sola scriptura — full emphasis on God's Word only.^2 The entire platform is open source under the GPL-3.0 license, with over 560 commits and active development as of early 2026.^3 What sets this API apart is its simplicity and zero-friction approach — no API keys, no rate-limiting walls, no paywalls. Just clean REST endpoints that return JSON.
Beyond the API, Bolls Bible is also a full Bible reading app available on Android, Windows, Linux, and the web. The app features bookmarks, reading history, cross-device sync, customizable themes, and a distraction-free reading experience that users love.
Why Christians Love It"This is a beautifully simple Bible reading app with zero distraction or fluff, only the necessary features."^4
"Excellent App. I would highly recommend this app to anyone who studies or would like to study the Holy Bible."^5
"Right sized bible app. Modern interface with just the right amount of features."^4
Notable- Completely free and donation-supported — no ads, no subscription^1
- Open source with 110+ GitHub stars and community contributions^3
- Built in Ukraine by a solo developer with a heart for making Scripture accessible^2
- Includes a Reference Tagging Tool that auto-links Bible references in any webpage^1
- Used by other developers as a data source for projects like Hebrew transliteration tools^6
