Best Claude Code Skills & Plugins (2026 Guide)

Skills are markdown instruction files teaching Claude Code specific behaviors; plugins add supporting files; MCP servers connect external tools like databases. Hundreds of community skills exist across claudemarketplace.com, GitHub, and Anthropic docs, though most developers still use Claude Code without customization. Start with free skills for git workflows, code review patterns, and test generation; paid skills (5-15 EUR) target specialized professional workflows. Skills teach Claude Code you