Stop Babysitting Your MacBook: Keep It Awake While AI Coding Agents Work

The problem: your Mac sleeps in the middle of an agent task

Here's the scenario: you kick off a large Claude Code task — a full test suite migration, a multi-file refactor, or a long research + implementation job. You close the lid, put the laptop in your bag, and go to a meeting or make coffee. When you come back 30 minutes later, the agent has been sitting suspended for 25 of those minutes. The task you thought was done is halfway through.

This happens because macOS treats a closed lid as an intent to sleep. By default, even if there's an active process running, the system will suspend when the lid closes. For most apps, this is fine — and even desirable. For long-running AI coding agents, it's a constant source of friction.

The naive fix — just leave the lid open — doesn't work if you're moving around. And keeping the laptop awake all the time (using an app like Caffeine always-on) wastes battery and means your Mac never sleeps even when agents are idle.

Your options in 2026

Option 1: macOS System Settings (Energy Saver)

You can disable sleep entirely in System Settings → Battery → Options → "Prevent automatic sleeping on power adapter when the display is off." This works when plugged in, but it's all-or-nothing — your Mac never sleeps, even when nothing is running. Not ideal for battery life or thermals. Apple's closed-display mode has the same catch: it only applies when the Mac is plugged in with an external display and keyboard or mouse attached.

Option 2: Caffeine or Lungo

Caffeine and its spiritual successor Lungo are one-click menu bar toggles. They hold a display-wake assertion, which means they keep the screen from sleeping. On Apple Silicon Macs, a simple display assertion doesn't prevent the system from sleeping when the lid closes. You need a stronger system-level assertion.

Even if you use a fork that holds the right assertion type, you're still left with a manual toggle — you have to remember to turn it on before you close the lid, and turn it off when your agent finishes. That's babysitting with extra steps.

Option 3: Amphetamine triggers

Amphetamine lets you create trigger-based sessions: "keep awake while Terminal is running" or "keep awake while Claude is running." This is a step up from manual toggles, but the trigger fires on whether the process exists, not on whether it'sworking. Claude Code can be in the menu bar 24/7; an Amphetamine trigger would keep your Mac awake 24/7 too.

Option 4: Hold My Lid (agent-aware)

Hold My Lid was built specifically for this scenario. It integrates with the lifecycle hooks that Claude Code, Codex, and OpenCode expose — hooks that fire when an agent starts a task and when it finishes. Hold My Lid holds the wake assertion during the task and releases it when the agent goes idle. Your Mac sleeps automatically when there's nothing to do.

Why Hold My Lid is the right tool for AI agent workflows

Setting it up takes under 2 minutes

1. 1

   Download and launch Hold My Lid

   Download from holdmylid.app or install via Homebrew: brew install --cask holdmylid

2. 2

   Install the Claude Code hooks

   Hold My Lid walks you through this on first launch. It adds a few lines to your Claude Code hook configuration — no manual editing required.

3. 3

   Start a Claude Code task and close the lid

   The menu bar icon goes orange while an agent is working. Close the lid. Your Mac stays awake. Come back when you get the notification.

Supported coding agents

Hold My Lid uses two integration methods — lifecycle hooks (most accurate) and process detection (reliable fallback):

Lifecycle hooks = real Working / Idle signal. Process detection = on while the process is alive. Both use the same system wake assertion.

Frequently asked questions