Cydonia

Cydonia

Run coding agents in your projects, several at once, and keep what they produce on your own disk.

Cydonia is a desktop workspace for the coding agents you run. Open a directory as a project, put any agent that speaks ACP to work in it, and watch several of them work at once — each in its own session, each in a pane you can see.

What they produce stays: articles, boards and tables written into the project directory as files, not a chat log that scrolls away.

It runs on macOS on Apple silicon, Linux and Windows, is written in Rust, and has no account and no sync.

Running agents

  • A session is one agent working in one project. ⌘N starts one, ⌥⌘N starts one on the next agent you have installed, and a session can work in any project Cydonia has open.
  • Panes, tabs and spaces put several of those on screen at once, so a running agent is something you watch rather than something you poll.
  • A card on a board, or a whole column of them, can be sent to a session you pick or to a new one, and spins an orb while an agent works on it.
  • Cydonia's own MCP tools let an agent read and write the project's articles and boards directly, which is how a turn ends as an artifact rather than as scrollback.

What it leaves behind

Everything lands in .cydonia/ inside the project, which carries its own .gitignore — none of it is the project's source, and all of it is on your disk.

  • Articles — documents with covers, highlighted code and rich links.
  • Boards — cards in columns or as a list, and the surface agents report their work on.
  • Tables — structured records.

Where to start