Anti sleep

Skill sickn33/agentic-awesome-skills/plugins/agentic-awesome-skills-claude/skills/anti-sleep

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Install

npx -y skills add sickn33/agentic-awesome-skills --skill anti-sleep

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What its author says it does

Copied from the file, not written here

Keep a Mac awake with caffeinate during long builds, downloads, or supervised automation runs.

The file declares its own license as MIT. That is the author’s claim about this one file, and it is not the same thing as the license GitHub reports for the repository, which is listed with the other numbers below.

SKILL.md

3.3 KB, 768 tokens by cl100k_base, as published. Nobody here has run it

Anti-Sleep (macOS caffeinate)

When to Use

Use when the user wants the Mac to stay awake during a long supervised task.
Use when a build, download, or automation run should not be interrupted by sleep.

Keep the Mac awake using the built-in caffeinate command. No install needed.

Quick start — the standard command

caffeinate -d -i -t 7200    # full power: screen stays on + no idle sleep, for 2 hours

Duration is -t <seconds>: 2h = 7200, 7h = 25200, overnight (9h) = 32400.

Aggressiveness levels

Flags	Effect
`-i`	prevents idle system sleep only (screen may still dim/lock)
`-d`	prevents display sleep (screen stays on)
`-d -i`	default choice — screen on + system awake
`-d -i -s`	adds `-s`: prevents sleep even on AC power semantics; `-s` only works when plugged in
`-u -t 1`	simulates user activity — wakes the display right now

Default to -d -i -t <seconds> unless the user says otherwise.

Tie to a process instead of a timer

caffeinate -d -i -w <PID>          # stays awake until that process exits (great for builds)
caffeinate -i npm run build       # wraps a command; exits when the command finishes

Run it in a visible terminal (cmux pane)

Prefer running it in the user's own terminal pane so it's visible and easy to Ctrl+C. In cmux (read the cmux skill first if interacting with panes):

cmux send --surface surface:<N> "caffeinate -d -i -t 25200\n"

Otherwise run it as a background Bash task. Never block your own foreground shell with it.

Verify and monitor

pgrep -fl caffeinate                       # is it running? shows exact flags
ps -o etime= -p <PID>                      # how long it's been running
pmset -g assertions | grep -i deny        # confirm sleep assertions are active

Gotcha: caffeinate prints nothing and holds the prompt — it looks "stuck" or like Enter wasn't pressed. It isn't stuck. Verify with pgrep, not by looking at the terminal.

Expiry: with -t it exits silently when time runs out — no notification. If the user asks "is it still on?" after hours, check pgrep first; it may simply have expired.

Keyboard backlight

caffeinate cannot keep the keyboard backlight on — it has its own inactivity timer with no CLI/API on Apple Silicon (researched 2026-07). Fix is manual, one-time: System Settings > Keyboard > "Turn keyboard backlight off after inactivity" > Never.

Stop early

pkill -f "caffeinate -d -i"    # or Ctrl+C in the pane running it

After starting: confirm to the user the PID, the flags, and the wall-clock time it will expire.

Limitations

Adapted from davidondrej/skills; verify local paths, tools, credentials, and agent features before acting.
For commands, remote access, scheduling, browser automation, or file-changing workflows, get explicit user approval and confirm the target environment first.