mca

name	mca
description	Keep Mac awake — even with lid closed. No sleep, ever. Uses privileged helper for password-free operation. Trigger: "不睡觉", "防睡眠", "合盖不睡", "keep awake", "prevent sleep", "never sleep", "mca".

MacClosedAwake

If this is your first time loading this skill, the MCP server needs to be registered. Run:

claude mcp add mca --transport stdio -- /opt/homebrew/bin/bun run ~/Projects/sleep-control-app/mcp/server.ts

Already configured? Skip to usage.

Usage

Ask Claude naturally:

• "不睡觉 30 分钟"
• "别睡，1 小时"
• "合盖不睡 2 小时"
• "恢复睡眠"
• "永远不睡"

Claude will call the mca_start / mca_stop / mca_status MCP tools.

What it does

pmset -a disablesleep 1   # kernel-level sleep prevention — lid-close safe
pmset -a disablesleep 0   # restore normal

Runs via a privileged helper (Unix socket) — no password prompts after first install.

MCP Tools

Tool	Description
mca_start(duration_seconds)	Disable sleep. 0 = forever. Auto-restores.
mca_stop()	Immediately re-enable normal sleep
mca_status()	Check current state

Requirements

• macOS 14+ (Apple Silicon or Intel)
• Bun (/opt/homebrew/bin/bun)
• Admin password (required once to install helper)