clipcap-agent-tools
Use clipcap as an annotate-only image tool:
CLIPCAP="/Applications/clipcap.app/Contents/MacOS/clipcap"
"$CLIPCAP" agent annotate --input input.png --spec marks.json --out output.png --meta output.json --pretty
If the app is not installed, build it from the repository first:
bash scripts/rebuild-and-open.sh
The agent accepts existing image files only. Do not use this skill for screen capture, window enumeration, Finder selection, or any task that would require system privacy prompts.