In order to get the same behavior with Amphetamine you’ll need to: 1. Install it from the AppStore (no brew, no GitHub) 2. Not forget to enable lock on lid close 3. If you ever connect/disconnect power while the lid is closed without the optional “Power Protect” system, the MacBook will sleep. The system is a script and a configuration file making sudo pmset -a disablesleep passwordless. 4. Add hooks to Claude Code configuration that will use Apple Script to start and stop Amphetamine sessions. For Codex you’ll have to make a script that will watch process activity to know when a turn ends.

It’s not like Amphetamine can’t do the same, it’s that this app is made specifically for AI agents and nothing else.