Agent skill
스킬(에이전트 스킬)
A bundle of instructions, reference material and small programs that tells an AI agent how to do a certain kind of job.
Overview
It is tiring to explain a company's report format or a release procedure to an agent at length every time. A skill puts that "how we do this work" into one folder. Normally the agent only knows each skill's name and a short description, and it opens the skill and reads it when a matching job comes up.
Anthropic released skills in October 2025, and many AI services now have something similar. If MCP is the "connection" to an outside tool, a skill is closer to the "know-how" for working with that tool. A skill made by someone else may contain programs, so check where it comes from before you use it.
An everyday example
It is like a set of work guides handed to a new employee. You do not make them memorize it all. They open the right page when a job comes up.
Why it matters
The same model can do different work depending on which skills it has. That is why the word "skills" appears so often in news about new features in AI services.
Also calledskill, AI skill