Came to say this. I've used it for years. Simple and works great!
chopete3 1 days ago [-]
This is great. Will check it.
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.
The dummy display enables “clamshell mode,” which lets your MacBook stay awake even with the lid closed, provided that it’s also on AC power. If the MacBook is not connected to power, the clamshell mode isn’t activated and it will sleep normally.
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.
chopete3 1 days ago [-]
My requirement was to keep the laptop on with the lid closed. Sleep normally when idle but wake up when a nomachine request comes in.
I will see how this app fits into my specific need.
I have to check this on Mac Sequoia 15.7
kageroumado 1 days ago [-]
The app is built for 26+, as I never tested it on earlier versions. It won’t solve your specific case, though, as it only prevents sleep. It won’t wake it once it’s already sleeping.
bluedino 1 days ago [-]
Can't you just use a hot corner configured as "prevent sleep"?
fragmede 1 days ago [-]
How does it sleep when the agent is done working with the hot corner?
doubled112 1 days ago [-]
Have the agent write an app that moves the cursor our of the hot corner and trigger it when done.
I have been using the builtin macOS `caffeinate` command for this.
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
zxexz 1 days ago [-]
Caffeinate is burned into my muscle memory at this point. I attribute that to the realization that you could repeat opt flags. There's something catchy about
caffeinate -dimsum
kageroumado 1 days ago [-]
Claude Code actually uses caffeinate -i -t 300 during Claude’s turn, restarted automatically until the turn finishes.
steve-atx-7600 1 days ago [-]
The new wave apps named after speed / modifinil must be hard core?
processunknown 1 days ago [-]
Does it also make my Mac irritable?
loeg 1 days ago [-]
I guess we are getting the entire modafinil, R-modafinil extended universe.
kageroumado 1 days ago [-]
Probably less irritable than amphetamine~
aqme28 1 days ago [-]
Thank goodness. I can’t leave my laptop for a second unattended because my cat loves nothing more than to dance on the keyboard. I’ve need something like this.
dawnerd 1 days ago [-]
But Amphetamine has an option to end when an app closes. I’m just so confused why everyone using ai is reinventing solutions that already exist.
kageroumado 1 days ago [-]
Claude Code or Codex (normally) don’t close the terminal window after a turn ends, they wait for the user’s reply.
neoecos 1 days ago [-]
I think the same...It happend to me that I just ask Claude to build whatever I need for my personal very specific use case without looking what else it's outhere
conception 1 days ago [-]
Easier to ask Claude than ask google I guess.
1 days ago [-]
flexagoon 1 days ago [-]
Everyone dreams about making the next cool AI tool and doesn't bother checking if someone has already made the same thing years ago without the word "AI" in the description
kageroumado 1 days ago [-]
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.
1 days ago [-]
rancar2 1 days ago [-]
For MacOS, keep awake with:
sudo pmset -a disablesleep 1
Reset back:
sudo pmset -a disablesleep 0
kageroumado 1 days ago [-]
This is exactly what the app does, except it ties it to agent activity and re-enables sleep once the turn ends, the laptop is close to overheating, the battery is low, or on a timer.
xbar 1 days ago [-]
Nice. I needed this yesterday, and will need it again today.
hamza_q_ 1 days ago [-]
This works great. Only downside is display doesn't turn off when you close the lid. Made a little status bar utility to wrap the disablesleep command and address that downside:
(yes, I know, another *afinil named Mac sleep prevention app? but hey, I was first :P)
kageroumado 1 days ago [-]
Afinils are cool, and your app is cool too~
hamza_q_ 1 days ago [-]
Indeed.
Thanks!
freakynit 1 days ago [-]
Just tried. Bare minimal and does exactly what's needed and nothing else. Love it. Thanks..
hamza_q_ 1 days ago [-]
np cheers mate
lellow 1 days ago [-]
Interesting. Kind of similar in purpose, but I created a simple app to schedule and type the "continue" word in my terminal after X time has passed, since I have to wait for my usage to be restored. =)
Rutvik_Pansare 6 hours ago [-]
Finally a smart tool to keep laptops awake, i have frained my battery several times with caffeinated. Thanks
dcan 1 days ago [-]
Does closing the M-series laptop lid no longer throttle the CPU like it did on the Intel ones?
mr_toad 1 days ago [-]
I’ve often wondered about the thermal performance or running a MacBook with the lid closed. One argument is that the reduced surface area from a closed lid increases temperature. Others argue that not running & rendering the display (and thus GPU) generates less heat. I’m not sure who to believe.
herrkanin 1 days ago [-]
Running lid closed with external display has been officially supported since forever so I wouldn't worry about it too much.
It would be great if adrafinil can also track the battery and token usage while agents are working
NDlurker 1 days ago [-]
Adrafinil never seemed to work for me. I tried it a few times when I worked an overnight shift.
strus 1 days ago [-]
I am always baffled how many people does not know about Amphetamine.
geor9e 1 days ago [-]
Codex recently built this in - "Prevent sleep while running" toggle
slopinthebag 1 days ago [-]
15k loc for this? holy cow
Msurrow 17 hours ago [-]
> month ago there was a wave of posts and tweets about engineers walking around cafes and parks with their MacBooks propped half-open, as fully closing the lid forces sleep that stops their AI agents
Why don’t they just ask the agents to code up something to prevent the Mac sleeping.. and that will auto enable/disable depending on if they have the agent running or not
I mean, agents makes human devs redundant, right? This seems like a trivial little problem for an agent to fix
moralestapia 1 days ago [-]
What's old is new again, but I welcome this.
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.
kageroumado 1 days ago [-]
It has a setting for thermal cutoff that you can set to something like 60º C. Sleeping will stop heavy work (like a build) before it leads to overheating.
dmd 1 days ago [-]
that was true of intel but definitely not of arm macbooks.
NewJazz 1 days ago [-]
Then why do they have fans?
loeg 1 days ago [-]
Many ARM Macbooks do not have fans?
NewJazz 12 hours ago [-]
Many do. I would argue most do, although i don't have air vs. Pro sales numbers so I can't speak definitively there.
Even those that don't may rely on passive cooling strategies that are less effective in enclosed spaces.
There were mac apps called caffeine and amphetamine years ago.
oenton 1 days ago [-]
In that case from what I understand, Adrafinil has a much lower abuse potential than amphetamines, in particular because it doesn't give you a rush. If we're going to name mac apps after pharmaceuticals then this feels a little bit classier. No rush, just steady wakefulness.
hamza_q_ 1 days ago [-]
Was referring to the *afinil specifically
operatingthetan 1 days ago [-]
Alright, well I guess I thought were were talking about naming apps after stimulant drugs lol.
hamza_q_ 1 days ago [-]
[dead]
unacorner 1 days ago [-]
Adrafinil's discovery and use predates Modafinil, I believe.
I thought it was related to sildenafil and gives the laptop an erection lol
Maybe as a metaphor that you can't close the lid cuz the boner is in the way and keeps it awake
1 days ago [-]
kylehotchkiss 1 days ago [-]
`sudo pmset -a sleep 0`
2001zhaozhao 1 days ago [-]
We need people to rediscover remote development desperately, lol.
1 days ago [-]
WUMBOWUMBO 1 days ago [-]
reminds me of ye old caffeinate
kageroumado 1 days ago [-]
Caffeinate doesn’t prevent sleep with the lid closed.
IncreasePosts 1 days ago [-]
At some point, if you closed the lid and didn't have an external monitor plugged in, macos would put the GPU in power save mode, which would tank local llm performance. Is that not the case any more? There were even small singles you could get which would trick the ps into thinking an external monitor was plugged in
loeg 1 days ago [-]
I don't think this is for running local llms.
1 days ago [-]
cyanydeez 1 days ago [-]
you can run opencode inside a docker container and expose it's webui.
https://apps.apple.com/us/app/amphetamine/id937984704?mt=12
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
It’s not like Amphetamine can’t do the same, it’s that this app is made specifically for AI agents and nothing else.
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)
Thanks!
(personally I have Ruby scripts that check activity on "tmux capture-output" for that)
https://ghloc.vercel.app/kageroumado/adrafinil?branch=main
Why don’t they just ask the agents to code up something to prevent the Mac sleeping.. and that will auto enable/disable depending on if they have the agent running or not
I mean, agents makes human devs redundant, right? This seems like a trivial little problem for an agent to fix
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.
Even those that don't may rely on passive cooling strategies that are less effective in enclosed spaces.
https://github.com/narcotic-sh/modafinil
He's a connoisseur.
Maybe as a metaphor that you can't close the lid cuz the boner is in the way and keeps it awake