Clamshell is a Mac menu bar app for Apple Silicon MacBooks (macOS 14+) that keeps work running with the lid closed: no monitor, sudo or admin setup. Builds, downloads and coding agents like Claude Code and Codex keep going while the built-in display stays dark. Thermal safety is always on, and normal lid sleep comes back when you disarm. 7-day free trial, then $9.99 once for one Mac ($19.99 for three) at clamshell.dev, or with a Setapp membership.
This is the 2nd launch from Clamshell. View more
Clamshell
Launched this week
Clamshell keeps an Apple Silicon MacBook awake with the lid closed, with no external display, sudo or admin setup. Version 2.0 adds 30+ optional modules: see what Claude Code and Codex are doing from the menu bar, get a notification when an agent needs you, let your agents finish and then let the Mac sleep, or sleep through a usage limit and wake when it resets. 7-day free trial, then $9.99 once.
Free Options
Launch Team
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Promoted
Hi everyone, I'm Matyas, the maker of Clamshell.
When Clamshell launched here in August, it did one thing: keep a MacBook awake with the lid closed, without an external display. In the comments, you asked for a way to let a job finish and then let the Mac sleep, and for Claude Code and Codex support.
Clamshell 2.0 adds both, as part of 30+ optional modules. Some of them:
Agent Status shows what each Claude Code and Codex session is doing, from the menu bar.
Fan Boost spins the fans up when your closed Mac works hard, to help keep it cool with the lid shut.
Finish Work, Then Sleep lets your agents finish, then lets the Mac sleep.
Sleep Until Reset sleeps through a usage limit and wakes the Mac when it resets.
Battery Budget lets a closed session use up to a set share of battery, then sleeps.
The core still needs no external display, sudo or admin password. A few modules use a helper you approve once. It's a 7-day free trial, then $9.99 once, with every module included, and v1 owners get 2.0 for free.
Which module would you want next? And what still makes you keep the lid open?