# Muster > Muster reads every action your AI takes before it runs, measures how far it would reach, and asks you on your iPhone before anything permanent happens. It is made by Auteur (https://auteurhq.com/). Releasing soon, free on iPhone and Apple Watch, with a free helper for the Mac. AI agents such as Claude Code, Codex, Cursor and Gemini CLI now act on a person's behalf, in the terminal and the editor and in whatever they touch: mail, the browser, files. Muster sits between the agent and the action. It reads each action before it runs, turns it into one plain sentence ("Empty your Downloads folder" instead of `rm -rf ~/Downloads/*`), and weighs how far it would reach: it stays on your Mac, someone else sees it, or nothing brings it back. Contained actions run on their own; the far ones stop and wait for one plain answer from you on your iPhone or Apple Watch: hold to allow, or not now. Anything permanent is never a single tap. Standing rules cover the things you always allow, and the record keeps everything your AI did. - Platforms: iPhone (iOS 26), Apple Watch (watchOS 26), and a helper for the Mac (macOS 14 or later). - Price: free. No account, no trial and no card. - Status: releasing soon on the App Store. - Privacy: private by design; the raw command never leaves your Mac. - Maker: Auteur (legal entity: Jogen Information and Tech Private Limited), New Delhi, India. ## Pages - [Home](https://muster.auteurhq.com/): How Muster reads, measures and asks. - [Privacy](https://muster.auteurhq.com/privacy/): What Muster keeps and what it never sends. - [Security](https://muster.auteurhq.com/security/): How Muster protects the link between your Mac and your phone, and how to report an issue. - [Terms](https://muster.auteurhq.com/terms/): The terms of use. - [Support](https://muster.auteurhq.com/support/): Help and contact. ## Maker - [Auteur](https://auteurhq.com/): Machines can act. Judgment stays human.