Chapterra

Generate a Story Bible for Your Book

A story bible keeps a long manuscript consistent. Chapterra reads your book and builds character profiles, a timeline, world-building notes, and plot-thread tracking, then flags where continuity slips, so book two does not contradict book one.

Build my story bible
Upload a DOCX, EPUB, or TXT. No account needed to start.

Built for long books and series

The longer the story, the easier it is to lose a detail. A story bible tracks the moving parts across an entire 90,000-word manuscript, or across a series, so you can catch contradictions before readers do.

Tracks without changing your story

Story Bible and Chat help you track continuity and think through problems without rewriting anything. Your text stays exactly as you left it.

Frequently asked

Is my manuscript private?

Yes. Your manuscript is processed in your browser and sent directly to the AI provider you choose (OpenAI, Anthropic, or Google). Chapterra never stores your content on its servers.

Build my story bible

Chapterra works on your whole book, one chapter at a time. Try it free.

Build my story bible

More Chapterra tools

ProofreadFix spelling, grammar, and punctuation, free. CopyeditFlow, consistency, and readability. Line EditSentence-level style and polish. Dev CritiquePlot, pacing, and character feedback. Beta Read ReportFull manuscript analysis, free. Writing CoachAn AI partner that knows your book. TranslateTranslate, then polish, in one pass. CowriterDraft chapters in your own style.