Agent skills, explained before you install them.

Skills teach Claude Code, Codex and other coding agents how to do one job well. Each page here explains what a skill really does, how to install it in your agent, what to ask it, and the catches its own documentation mentions.

Design

Make AI-built pages and apps stop looking generic.

Engineering workflow

Plan, test, review, and ship with a repeatable process.

Planning

Think a plan through before anything gets built.

Memory

Carry context from one session to the next.

Skill authoring

Write, test, and improve your own skills.

Guides and tools

The basics, from the official docs.