Prevents Bluetooth audio devices (e.g. AirPods) from hijacking the default macOS microphone.
Beta: MicGuard is pre-1.0. Backward compatibility is not guaranteed until version 1.0.0 is reached.
- macOS 15+
brew install pszypowicz/tap/mic-guardmake installMicGuard is a macOS menubar app that monitors the default input device via CoreAudio. When the system switches the input (e.g. when AirPods connect), MicGuard immediately reverts to your preferred microphone.
On first launch the current input device becomes your preferred mic. You can change it anytime from Settings or with mic-guard set.
- Menubar daemon — runs silently in the background with a shield+mic icon
- Auto-revert — reverts unwanted input device switches caused by Bluetooth connections
- Mute / volume control — toggle mute and set input volume via CLI
- CLI tool —
mic-guardbinary for scripting (list,set,enable,toggle,mute,volume, etc.) - SketchyBar integration — reference plugin with shield + mic items, device picker popup, and mute on click
- Distributed notifications — real-time status broadcasts for custom integrations
AirPods connecting hijacks your input device. MicGuard reverts it instantly.
MicGuard has two device enforcement modes, configurable in Settings or via mic-guard set:
Protects your preferred mic during device connect/disconnect events. If you switch the input device in System Settings after devices have settled, MicGuard recognizes this as intentional and saves the new choice as your preferred mic.
Always reverts to your chosen preferred device, no matter when or why the switch happened. To change the preferred device you must explicitly select it in Settings or run mic-guard set <name>.
See the full docs at pszypowicz.github.io/MicGuard — covering CLI reference, debugging, integrations, notifications, and releasing.
MIT