GIMP Control

GIMP (/Applications/GIMP.app) embeds Python 3 and exposes its whole document model through libgimp over GObject Introspection (gi.repository.Gimp), with GEGL for pixels and filters. Drive it through GIMP's own Script-Fu server — a TCP endpoint GIMP ships with, so there is nothing to install — which hands each script to GIMP's python-fu-eval. The script runs against the live GIMP: the canvas updates, the layer stack is the one the user is looking at, and nothing happens headless. Every call in this skill was run against GIMP 3.2.4.