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.
Clamshell Reviews
The community submitted 1 review to tell us what they like about Clamshell, what Clamshell can do better, and more.
4.0
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Thanks Gal. The clam should turn blue as soon as Clamshell is actually armed, so if yours stayed gray that sounds like something went wrong. Did it stay unchanged after you armed it?