Now, I've tested more than 100 Claude Code plugins and here are five that every vibe coder must install. What are Claude Code plugins? How to install and use Claude Code pluginsThere are two ways to install plugins, depending on how you use Claude Code. While Superpowers makes Claude Code better, it won't make Sonnet perform as well as Opus, or Opus perform as well as Fable. Language server plugins connect Claude Code to the same LSP (Language Server Protocol) servers that power your IDE's intelligence.