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Quickstart

Get started with atrium in under a minute.

Install

  1. Download the latest .dmg from the Releases page.
  2. Open the DMG and drag atrium to your Applications folder.
  3. Open atrium.

First steps

  1. Start a terminal or launch an AI agent from the built-in launcher.
  2. Split a few panes. Open a file. Switch branches. Start real work.
  3. Close the app, or reboot your machine.
  4. Open atrium again.
  5. Your workspace is still there.

Launching AI agents

atrium ships with built-in support for Claude Code and Codex. Open any terminal pane and the launcher bar appears at the top of empty panes. Select an adapter and press Enter to launch.

When you close and reopen atrium, detected agent sessions are automatically resumed.

Keyboard shortcuts

  • Cmd+D — Split pane right
  • Cmd+Shift+D — Split pane down
  • Cmd+T — New tab
  • Cmd+W — Close pane
  • Cmd+L — Toggle launcher
  • Cmd+Shift+F — Open repo search
  • Cmd+Shift+G — Open source control
  • Cmd+B — Toggle sidebar
  • Cmd+Plus/Minus — Zoom in/out
All keybindings are remappable in Settings.