SKILL.md

A Skill is a folder containing a `SKILL.md` file: a name, a description of when to use it, and instructions. Claude reads the description, and when a task matches it pulls the full skill in. Skills are how you package repeatable know-how — house style, release process, a tricky migration.

.claude/skills/changelog/SKILL.md

---
name: changelog
description: Use when adding an entry to CHANGELOG.md.
---

Append under ## Unreleased, newest first,
using conventional-commit prefixes.

• ✓Personal skills: ~/.claude/skills/
• ✓Project skills: .claude/skills/ (commit them)
• ✓The `description` is what makes Claude pick it up — write it as a trigger
• ✓Manage them with /agents-style menus and invoke by name when needed