Show HN: Atlas – Let AI agents use your Mac without taking over your screen

Atlas is a free, open-source MIT-licensed tool that gives AI agents a hidden second macOS login on your Mac, where they can open apps, click and type while you keep working in your own account. It supports Claude, Codex, Cursor, opencode and Pi, queues agents one at a time, and reports lower context use than native Computer Use (e.g. 36k vs 232k tokens for Claude Opus 5.5 across three tasks). It is not a security sandbox, and some features like native Save/Open panels and Safari web views require a connected Screen Sharing session.