Claude Code Skills Exercises — AI skill for Claude Code

🧠 Building Agent Skills: A Practical Exercise Guide

**By Panaversity — Teaching AI Agents to Work YOUR Way**

---

What Are Agent Skills?

A **skill** is a set of instructions you write that teaches Claude *how* to handle a specific type of task. Instead of writing a long prompt every time, you write the skill once — and Claude follows it automatically whenever that type of task comes up.

Think of it like this:

• Without a skill: You explain your formatting preferences, writing style, data rules, and output requirements every single time.
• With a skill: You write those instructions once in a SKILL.md file, and Claude follows them automatically forever.

Skills are the bridge between "using AI" and "building AI systems." They're how you go from one-off prompting to **reusable, consistent, high-quality AI workflows.**

Anatomy of a Skill

Every skill lives in a folder and has at minimum one file:

my-skill/
├── SKILL.md          ← The brain — instructions Claude follows
├── examples/          ← Optional: sample inputs/outputs Claude learns from
├── templates/         ← Optional: templates for consistent output
└── references/        ← Optional: reference material Claude can consult

The `SKILL.md` file has three parts:

1. Frontmatter — Name and description (tells Claude WHEN to use the skill)
2. Instructions — Step-by-step guidance (tells Claude HOW to do the task)
3. Examples/Rules — Concrete examples and constraints (tells Claude WHAT good output looks like)

Where Skills Live

• Claude Code: In your project's .claude/skills/ folder, or any folder Claude can access
• Cowork: As plugins you install in the Claude Desktop app's Cowork tab

---

📂 Package Structure

skills-exercises/
├── README.md                          ← You are here
│
├── module-1-understanding-skills/     ← Read & analyze existing skills
│   ├── exercise-1.1-anatomy/          (Dissect a skill file)
│   ├── exercise-1.2-when-to-skill/