Writing systems for books with many moving parts.

Polysemy is a private-beta platform for nonfiction and research authors who need one place for drafting, collaboration, evidence, AI provenance, and editorial control.

Request private beta Open workspace

Human approval firstNonfiction and researchChapter-level collaboration

Manuscript board

Editorial focus

Turn scattered thinking into a structured manuscript.

Draft map

Collaboration notes

Revision queue

Structured manuscript workspace

Plan the book, draft chapters, stage source files, and keep the nonfiction argument organized.

Live editorial collaboration

Co-authors edit in real time while editors, reviewers, and beta readers work through comments and suggestions.

Auditable AI assistance

AI creates bounded suggestions and notes. Accepted changes remain human controlled and provenance-backed.

Built around the authoring loop.

The first product milestone proves the full path: approved beta access, workspace creation, new-book onboarding, first chapter room, and permission-aware collaboration.

Create a nonfiction book from resumable onboarding

Draft in TipTap with one Liveblocks room per chapter

Mirror collaboration, AI, file, and admin events into Convex

AI stays bounded and accountable.

Bedrock actions are explicit, logged, and returned as suggestion artifacts. AI never changes canonical manuscript text without human acceptance.

Private beta access controlled