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AI Agents
What Are Agent Skills and How to Write One
By NexaMarTech Team6 min read
Skills are portable capability packages for AI agents. Here is how they work and how to author your first SKILL.md.
What Are Agent Skills
A skill is a reusable capability an agent can load on demand — a folder with a SKILL.md describing what it does, when to use it, and the exact steps to follow.
Skills vs Tools
- Tool: one function call (e.g.
send_email) - Skill: a multi-step procedure (e.g. "draft weekly newsletter")
Anatomy of SKILL.md
---
name: my-skill
description: When and why to use this
---
# Steps
1. ...
Author your first one
Use the Skill Builder — describe the task in plain English and get a ready-to-ship SKILL.md.
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