Close the lid.Let it brew.

Let It Brew is a free, open-source menu-bar app that keeps your Mac awake while a supported coding agent works, then lets it sleep when the work stops.

Download for Mac

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Tue Aug 11 11:42 AM

MacBook showing Working Codex and Claude Code sessions in Let It Brew

How it works

Close it. The work keeps going.

Let It Brew follows real agent activity and keeps your Mac awake while work runs. When the work stops, the Mac can sleep.

Let It BrewYour Mac can sleepNo agents are working

Agent activity

No agents are workingCodex and Claude Code have finished

01AI agents are working

Let It Brew sees real local session activity and keeps the Mac awake.

02You close the lid

The agents keep working and the awake hold continues.

03The agents finish

Let It Brew stops brewing so your Mac can sleep.

The awake hold follows the work.

Tracks agent activity

Your Mac stays awake only while a supported coding agent is working.

Works with the lid closed

Supported agents can keep working after you close your MacBook.

Sleeps when work stops

When every agent stops or waits for you, your Mac can sleep.

Handles multiple sessions
Your Mac stays awake until the last working session stops.
Lives in the menu bar
Check agent status or pause Let It Brew from the menu bar.
Power & Display controls
Choose connected-power-only operation, set a battery floor, use Low Power Mode, and let displays sleep independently.
Finds updates automatically
Checks GitHub once a day and asks before downloading anything.
Runs locally
No account, cloud service, telemetry, or notifications.
Pause at any time
Stop keeping your Mac awake without losing track of your sessions.