doctor

doctor reports whether the current environment can capture screens and emit input.

ferrisgrid doctor

Options

Option	Purpose
--output-dir <path>	Create/check a specific FerrisGrid output directory. Defaults to .ferrisgrid.
--backend <name>	Select capture/input backends.

It prints:

• OS
• capture backend status
• input backend capabilities
• output directory
• discovered screens
• ffmpeg availability

Run this before an agent workflow, especially after changing permissions, backends, displays, or Docker workspace settings.