BookFoundry is an AI book-creation platform that takes you from a single idea or raw content to a finished, publish-ready book. It writes full-length manuscripts with real chapter-to-chapter continuity, designs your cover, validates Amazon KDP categories, and exports clean EPUB, PDF, and DOCX files. It supports fiction, non-fiction, memoir, children's books, and screenplays across 18 languages, with a built-in AI detector, humanizer, book formatter, and translation. Start free.
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Hunter
š
Hey Product Hunt! š
I'm really excited to share BookFoundry with you today.
Writing a book is hard, but I kept hitting the same wall: AI chat tools can draft one chapter, then forget your characters, your plot, and your voice by chapter three. You end up stitching fragments together instead of actually finishing a book.
BookFoundry is built for the whole book, not snippets. Give it an idea or your existing content, and it writes a full-length manuscript with real continuity from the first page to the last: consistent characters, a planned arc, and one voice throughout. Then it designs your cover, validates your Amazon KDP categories, and exports clean EPUB, PDF, and DOCX files that are ready to publish.
What's inside:
š Fiction, non-fiction, memoir, children's books, and screenplays
š 18 languages
šØ AI cover design
ā KDP-ready formatting and category validation
š Built-in AI detector, humanizer, and translation
You can start for free, and paid credits begin at $14.99.
I'd love your honest feedback. What's the one book you've always wanted to write but never finished? I'll be here all day reading every comment. š
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How does the chapter-to-chapter continuity actually hold up for a 300 page novel, and do you get to guide the plot or is it fully auto-generated from the initial idea?
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Hunter
Good catch. We're actually hitting 300+ pages regularly now. It's become the baseline use case, not the edge case.
The thing is, continuity doesn't really degrade over length anymore. We maintain persistent character and plot state across the entire generation, so each chapter pulls the full narrative context instead of just summaries. That's why character voice and plot threads stay solid even at 300+ pages. We used to see the degradation you're probably thinking about, but we fixed it by reworking how context gets weighted and compressed.
Plot control is completely yours. You're not watching auto-generation happen. At each chapter you decide where the story goes, set a plot beat or character moment, and the system respects what you've already built. Foreshadowing, character arcs, and payoffs all flow from that.
You still need to actually be present as the storyteller though. Not line editing prose or anything like that. Just spending 30 seconds per chapter saying what happens next. That's the difference between a 300-page book that works and one that falls apart halfway through. The ones that ship well are the ones where people are actually invested in steering them.
Most of our longer books that people are actually publishing have better continuity than the experimental 50-page books. There's something about committing to a real project that makes the whole thing hold together better.
How does the chapter-to-chapter continuity actually hold up for a 300 page novel, and do you get to guide the plot or is it fully auto-generated from the initial idea?
Good catch. We're actually hitting 300+ pages regularly now. It's become the baseline use case, not the edge case.
The thing is, continuity doesn't really degrade over length anymore. We maintain persistent character and plot state across the entire generation, so each chapter pulls the full narrative context instead of just summaries. That's why character voice and plot threads stay solid even at 300+ pages. We used to see the degradation you're probably thinking about, but we fixed it by reworking how context gets weighted and compressed.
Plot control is completely yours. You're not watching auto-generation happen. At each chapter you decide where the story goes, set a plot beat or character moment, and the system respects what you've already built. Foreshadowing, character arcs, and payoffs all flow from that.
You still need to actually be present as the storyteller though. Not line editing prose or anything like that. Just spending 30 seconds per chapter saying what happens next. That's the difference between a 300-page book that works and one that falls apart halfway through. The ones that ship well are the ones where people are actually invested in steering them.
Most of our longer books that people are actually publishing have better continuity than the experimental 50-page books. There's something about committing to a real project that makes the whole thing hold together better.