Recently I bought a usb-c empty external monitor card to prevent mac from going to sleep. There are many of these external monitor simulators on Amazon.
I still see the laptop go to sleep many times with the external monitor simulator.
This is the one I bought.
4K 60Hz USB-C Type-C Virtual Display Adapter DDC EDID Dummy Plug Headless Ghost Display Emulator 2K 60hz1080P@120Hz
Adrafinil simply disables the global sleep without spoofing hardware, and re-enables it once the agent is done working, the temperature is too high, or the battery is low.
I will see how this app fits into my specific need.
I have to check this on Mac Sequoia 15.7
For example:
caffeinate -dimsu
That keeps the Mac awake so I can use Claude remotely from phone.
You can also wrap your command as well, but I rarely use it.
caffeinate -dimsu your-agent-command
caffeinate -dimsum
sudo pmset -a disablesleep 1
Reset back:
sudo pmset -a disablesleep 0
https://github.com/narcotic-sh/modafinil
(yes, I know, another *afinil named Mac sleep prevention app? but hey, I was first :P)
It’s not like Amphetamine can’t do the same, it’s that this app is made specifically for AI agents and nothing else.
I used to do this 15 years ago to keep listening to music from my laptop (one of the white chiclet ones) in my backpack, can't remember the name of the app I used then.
One caveat, your laptop cannot cool inside a backpack, it will overheat and shut down anyway. This happened to me several times.
sudo bash -c 'touch KEEP_RUNNING; pmset -b sleep 0; pmset -b disablesleep 1; while [ -e KEEP_RUNNING ]; do sleep 1; done; pmset -b sleep 5; pmset -b disablesleep 0'
Agent, when you're done do `rm KEEP_RUNNING`, kthxbye.
(personally I have Ruby scripts that check activity on "tmux capture-output" for that)