loooom

A small, curated collection of high-quality skills — and an experiment in measuring what makes a skill good.

Most "skills" in the wild are a generic paragraph with a nice filename; you could regenerate them from the title alone. Loooom is the opposite bet: a tight set of skills held to a deliberately high bar, each scored against a rubric so quality is visible instead of vibes. The web app lives at loooom.xyz; this is the main repo.

More on the why: Loooom: Curated Skills for People Who Don't Code.

Install a skill

npx loooom add mager/beginner-japanese

Creates .claude/skills/beginner-japanese/SKILL.md in your project. Claude Code picks it up automatically — and because the skills are agent-agnostic, you can copy a SKILL.md into any AI just as well.

Quality scoring

Every skill is scored before it ships — that's the whole point of the project. Scoring runs on a free model (Groq), so grading the catalog costs nothing.

Setup

npm install -g promptfoo

# Free key at console.groq.com
export GROQ_API_KEY=your-key-here

Run

./bin/eval-all.sh                                                            # all skills
npx promptfoo eval --config plugins/beginner-japanese/promptfooconfig.yaml   # one skill
npx promptfoo view                                                           # results in the browser

Scores write to eval-scores.json and show on loooom.xyz/browse.

CI

Evals run on every push that touches plugins/*/promptfooconfig.yaml or plugins/*/skills/**, and nightly at 02:00 UTC. Results are committed back to eval-scores.json by the eval bot. Requires GROQ_API_KEY set as a GitHub Actions secret.

Structure

plugins/
└── my-plugin/
    ├── promptfooconfig.yaml   # quality tests
    └── skills/
        └── my-plugin/
            └── SKILL.md       # the skill itself

Commands

Command	Description
npx loooom add <author>/<plugin>	Install a skill into .claude/skills/
npx loooom list	List installed skills
npx loooom help	Show help

Requirements

• Node.js 18+

License

MIT