Download WakeHold

Installing

Open the disk imageDrag WakeHold into your Applications folder.
Open it the first timeRight-click the app and choose Open, then confirm.
Look for it in the menu barWakeHold has no Dock icon or main window — it lives in the menu bar.

macOS will warn you on first launch.

WakeHold isn't signed with a paid Apple Developer certificate, so Gatekeeper says the developer “cannot be verified.” This is expected. Right-click the app in Applications, choose Open, and click Open in the dialog — once only.

If the dialog won't let you through, open System Settings › Privacy & Security and click Open Anyway.

Permissions

Administrator (optional)

Only if you turn on lid-closed mode. Clearing the clamshell-sleep flag requires root, so macOS asks for your password once. A watchdog restores normal sleep if WakeHold ever stops running.

Checking it works

WakeHold ships with a built-in diagnostic. In Terminal:

/Applications/WakeHold.app/Contents/MacOS/WakeHold --diagnose

It prints what the app can see and whether it would act — the quickest way to tell a settings problem from a permissions one.

Uninstalling

Quit from the menu bar and drag the app to the Trash. Delete ~/Library/Application Support/WakeHold if you want its data gone too.