Learn the category

The AI coding tooling space invented a lot of new vocabulary in a short time. These explainers are neutral, plain-English, and aimed at someone trying to figure out what fits where.

What are Claude Skills
A skill is the simplest unit of teachable expertise for an AI tool. Definition, anatomy, where they run.
Skills vs Agents vs MCPs vs Hooks
Four different primitives that all extend an AI tool. When each is the right choice, where they overlap, and how they compose.
How Claude Plugins Work
Claude Code's plugin system, marketplaces, and how a directory becomes installable across teams.
Glossary
Shared definitions for the terms you keep running into — agents, sub-agents, MCP servers, hooks, slash commands, plugins.