One voice. Seven shapes. Your model, your words. Book Loom is the first writing tool built around the book you're actually writing.
One voice
The Director is your only chat partner — Foundation to final draft, no resets, no handoffs. A team of specialists contributes from backstage: a world-builder, a character architect, a fair-play validator, a consent reader. You never see them.
Your book, your shape
Cast. World. Lore. Timeline. The same four sections across every book — but the shape the Director knows how to fill changes with your genre. A mystery demands fair-play. A horror picks its dread register. A romance tracks beats and consent.
Bring your own model
Connect Claude, ChatGPT, Gemini, or any provider with an API. Book Loom runs inference through your own account. It doesn't resell tokens. It doesn't train on your writing. When you leave, you take everything with you.
One tool, seven shapes. A romance isn't a mystery. A horror isn't a space opera. Book Loom reshapes itself around the book you're actually writing.
World · Magic · Characters · Factions · Themes
For the world that's been living in your head.
Characters · Relationships · Tension Arcs · Beats · Setting · Themes
For the two of them.
Crime · Suspects · Clues · Red Herrings · Investigation · Setting · Themes
For the puzzle the reader has to be able to solve.
Protagonist · Antagonist · Stakes · Set-Pieces · Setting · Themes
For what's about to break.
Threat · Victims · Rules · Setting · Dread Register · Themes · Beats
For the dread you want — at the register you choose.
World · Technology · Characters · Factions · History · Themes
For the one thing that changed.
Characters · Voice · Themes · Setting · Motifs
For the mind the book lives inside.
Inference runs through your own API key, not ours. You pay the provider directly.
Book Loom never uses your work as training data. We store it so you can return to it.
Every book, every canon entry, every draft exports as a single file. No lock-in.
You talk to the Director. From Foundation to final draft, the conversation never resets.
No. Your words are yours. Book Loom stores your work so you can come back to it — nothing else.
Yes. Connect Claude, ChatGPT, Gemini, or any provider by API key. Book Loom doesn't charge for inference — that runs through your own account.
Epic Fantasy and Romance ship first. Mystery, Thriller, Horror, Sci-Fi, and Literary Fiction follow. Join the waitlist for your genre and I'll tell you the moment it's ready.
There's a free tier — one active book, full access. Paid unlocks unlimited books and advanced features. Final pricing at launch.
That's what the free tier is for. Start a book, commit nothing, see how the Director responds. Leave anytime — everything exports.
Ready?
