In this video I walk you through Claude Code Skills—what they are, why they matter, and how to use them to extend your coding agent with capabilities Claude doesn’t have natively (like generating images). Skills are basically markdown files with very precise instructions plus any supporting resources (scripts, docs, UI guidelines). I also break down the difference between skills, MCP servers, and custom commands, because people mix these up all the time: MCP servers add tools that sit in context, custom commands are reusable prompts, and skills are auto-activated workflows that Claude pulls in only when needed. Then I go hands-on: I install skills from marketplaces (Anthropic’s GitHub repo and skills.sh) and show why skills are so token-efficient—Claude keeps the context window lean and only loads the big skill files when it actually uses them. From there I use a front-end design skill to fix a bland “AI slop-ish” landing page, verify changes with a browser-use skill, and then build my own image generation skill using the skill creator. Finally, I cover the right way to handle API keys (env vars, never hardcode), generate a hero image, and create an image optimization skill to convert the output to high-quality WebP for the web (dropping a ~600KB image down to ~56KB).