cxcscmu/pillow-grayscale
Convert images to grayscale in-place using Pillow (PIL), overwriting original RGB files.
npx skills add https://github.com/cxcscmu/SkillLearnBench --skill pillow-grayscale
Take cxcscmu/pillow-grayscale from the repository into ~/.claude/skills for personal
use, or into .claude/skills inside a project.
The agent identifies a skill by the name field in its header. Two skills with the
same name cannot sit side by side — one of them will be ignored.
The instructions reference pip.
Without those the skill loads but fails at the first command.