pi-caffeinate

☕ pi-caffeinate — Keep Your Computer Awake While Pi Works

@narumitw/pi-caffeinate is a cross-platform Pi coding agent extension that prevents your computer from sleeping while the Pi agent is processing a prompt.

It is designed for long-running coding, refactoring, debugging, web research, and autonomous agent workflows where a suspended laptop or desktop would interrupt progress.

✨ Features

• Starts an OS sleep inhibitor when Pi begins processing (agent_start).
• Releases the inhibitor when processing ends (agent_end) or the session shuts down.
• Publishes the active keep-awake mode as status while an inhibitor is active.
• Supports macOS, Windows, WSL, and Linux.
• Defaults to display-awake mode on every supported OS: prevent system sleep and keep the screen/display awake.
• Provides a single /caffeinate command with menu-based controls and direct subcommands.
• Persists the selected keep-awake mode in a small JSON settings file.
• Allows a custom inhibitor command through environment configuration.
• Emits plain status text; @narumitw/pi-statusline can add or suppress the status icon from JSON config.
• Fails safely when no supported inhibitor is available.

📦 Install

pi install npm:@narumitw/pi-caffeinate

Try without installing permanently:

pi -e npm:@narumitw/pi-caffeinate

Try this package locally from the repository root:

pi -e ./extensions/pi-caffeinate

🖥️ Supported platforms

The default mode is display on every supported OS. That means pi-caffeinate prevents system sleep, suspend, or hibernate and keeps the screen/display awake.

Use /caffeinate sleep if you want to prevent system sleep while allowing normal display idle behavior such as screen blanking or monitor power-off.

Platform	sleep mode	display mode, default
macOS	caffeinate -ims	caffeinate -dimsu
Windows	PowerShell SetThreadExecutionState(0x80000001)	PowerShell SetThreadExecutionState(0x80000003)
WSL	Windows powershell.exe with SetThreadExecutionState(0x80000001)	Windows powershell.exe with SetThreadExecutionState(0x80000003)
Linux with systemd	systemd-inhibit --what=sleep ... sleep infinity	systemd-inhibit --what=idle:sleep ... sleep infinity
Linux fallback	caffeinate -ims when available	caffeinate -dimsu when available

If no supported inhibitor is available, the extension stays loaded and reports that caffeinate is unavailable.

🚀 Commands

/caffeinate

Opens keep-awake controls. In non-interactive sessions, it prints command usage and status.

/caffeinate display

Keeps the system and screen/display awake. If an inhibitor is currently active, it is restarted so the new mode applies immediately.

/caffeinate sleep

Keeps the system awake while allowing normal display sleep. If an inhibitor is currently active, it is restarted so the new mode applies immediately.

/caffeinate status

Shows whether an inhibitor is active, unavailable, disabled, or idle. The status includes the current mode and settings file path.

/caffeinate mode

Opens an interactive selector for the keep-awake mode.

/caffeinate stop

Releases any active inhibitor until Pi starts another agent run.

⚙️ Configuration

Persisted mode

/caffeinate sleep and /caffeinate display save the selected mode to:

${PI_CODING_AGENT_DIR:-~/.pi/agent}/pi-caffeinate-settings.json

Example:

{
  "mode": "display",
  "updatedAt": 1791763200000
}

Missing, invalid, or deleted settings default back to display mode on every supported OS.

Environment variables

Disable the extension:

PI_CAFFEINATE_DISABLED=1 pi

Use a custom inhibitor command:

PI_CAFFEINATE_COMMAND='systemd-inhibit --what=idle:sleep --why="pi running" --mode=block sleep infinity' pi

The custom command is parsed with shell-like quoting and is run directly without a shell. PI_CAFFEINATE_COMMAND takes precedence over the saved mode; /caffeinate status reports when a custom command is active.

Deprecated: PI_CAFFEINATE_ICON still works for now. If you use @narumitw/pi-statusline, move the icon to ${PI_CODING_AGENT_DIR:-~/.pi/agent}/pi-statusline-settings.json:

{
  "extensionStatusIcons": {
    "caffeinate": "☕️"
  }
}

Without @narumitw/pi-statusline, keep using PI_CAFFEINATE_ICON during the compatibility window. In pi-statusline-settings.json, use an empty string to show the caffeinate status without an icon.

🧠 Why use pi-caffeinate?

AI coding agents often run tool-heavy tasks that take several minutes. pi-caffeinate keeps your machine awake during active Pi work, helping browser automation, local builds, test runs, code generation, and long prompts finish reliably.

The default display-awake mode prioritizes uninterrupted long-running Pi work across platforms, including Linux desktops that require idle inhibition to prevent automatic suspend. Use sleep-only mode when you prefer normal screen power saving and your system does not need idle inhibition to keep Pi running.

🗂️ Package layout

extensions/pi-caffeinate/
├── src/
│   └── caffeinate.ts
├── README.md
├── LICENSE
├── tsconfig.json
└── package.json

🔎 Keywords

Pi extension, Pi coding agent, caffeinate, prevent sleep, keep awake, sleep inhibitor, AI agent automation, long-running coding task, TypeScript Pi package.

📄 License

MIT. See LICENSE.