Skills
Teach your AI a method once
A skill is a saved set of instructions your AI follows for one kind of job. Install it once, and your AI knows the method from then on. It uses it when it fits, or when you ask for it by name.
Each skill is just a folder with a plain text file inside, called SKILL.md. There’s no program in it. You can open the file and read exactly what it tells your AI to do, and that’s a good habit with anything you install.
Before you start
For when you have an idea or a plan and want to find the holes while they are still cheap to fix.
Checking your work
For after your AI has made something, or after you have given it a pile of notes.
Finding out what’s true
For when something sounds right and you want to know how sure you can be.
Every skill here was checked by three independent reviewers and then run once in a fresh Claude Code install, before it went on this page.