Just shipped in 0.6.0! New path commands:

   # Read path data
   figma-use path get <id>

   # Set new path
   figma-use path set <id> "M10,10 L90,50 L10,90 Z"

   # Transform existing paths
   figma-use path move <id> --dx 100 --dy 50
   figma-use path scale <id> --factor 2
   figma-use path flip <id> --axis x