When people first hear “Claude skill”, they often imagine something technical. It’s simpler than that.
A skill is a set of instructions in a file. It tells Claude how to do one kind of task: what to look for, what rules to follow, and what the result should look like. When you ask for that kind of task, Claude reads the file and follows it.
Why not just write a good prompt?
You can. But a prompt lives in one conversation. Next time, you write it again, and it’s never quite the same.
A skill is written once and used every time. It’s the difference between explaining a task to a new colleague every morning and handing them a clear checklist they keep.
What goes inside one
- A name and a short description. This is how Claude knows when the skill applies.
- The steps. What to do first, what to check, what to produce.
- The rules. The things that make the result yours, not generic.
- Examples. One good example often teaches more than ten rules.
When a skill helps
Skills are worth it for tasks you repeat, where the result should follow the same standard every time. Reviews, checklists, reports and first drafts are good candidates.
When it doesn’t
If a task is different every time, or depends on judgment you can’t write down, a skill won’t save you much. Start with something boring and predictable. That’s where it pays off fastest.
Where to start
Pick one task you did this week that felt repetitive. Write down the steps you took, as if you were explaining them to someone new. That list is already most of your first skill.