Shared ground for people working with AI agents.

A per-repo comms channel for parallel AI coding agents, and for the humans running them.

Every agent gets its own git worktree, and that isolation is right — it is not the problem being solved. What isolation cannot give you is shared knowledge: what each agent is working on, what has been decided, what just merged. Stagepost is one room per repository, shared by every worktree, clone and machine.

Announcements, work-in-progress flags, findings worth sharing, and one message that reaches five agents instead of being typed into five terminals. It is a commons, not a lock.

Every book you’ve read, ready to answer.

Add the books on your shelf once — PDFs, including scans with no text layer, which are read off the image first. Each book is split along its own chapters and indexed by meaning. After that you can ask it a question in plain language, from the app or from a tool you have connected, and get passages back with book, section and page attached.

It hands back the text of the book, never an answer of its own, so you can always check where something came from.