Skill Creator
Official skill for writing a new agent skill with the right structure.
Use it for
Turning a repeated instruction you keep pasting into a reusable SKILL.md
Skip it if
One-off tasks; a skill you use once is just a long prompt with extra files
What it is
An official meta-skill: it guides the creation of a new skill, including when to use one, the folder layout, and how to phrase the instructions so an agent applies them at the right moment. The interesting part is the discipline it enforces — most bad skills fail because they describe a task instead of a trigger.
Install
Clone the repository, then copy the skill folder into your agent's skills directory — ~/.claude/skills/ for Claude Code. Skills are plain files: no build step, no daemon.
npx skills add https://github.com/anthropics/skillsHow to judge it
Read the SKILL.md before you install. A good skill states when it applies, what it must not do, and how to verify the result. A skill that only lists adjectives will change the agent's tone without improving its output — skip those.
Other Productivity skills
- Claude Code Templates — A large catalogue of ready-made agent components: skills, agents, and commands.
- XLSX Analysis — Official skill for formulas, pivots, and multi-sheet workbooks an agent can reason about.
- PPTX Builder — Official skill for generating and editing slide decks that keep their master layout.