Serena

Goes far beyond grep — uses language server semantics so Claude can understand code structure, trace references precisely, and suggest safe refactors.

Serena turns Claude into a proper coding partner that actually understands your codebase. Instead of making you paste entire files, it can jump straight to the symbols and functions you need, then edit them intelligently. If you're working with Python, JavaScript, TypeScript, Java, Rust, Go, C++, or any of 30+ other languages, Serena uses Language Server Protocol to give Claude real symbol-level awareness—like having an IDE built into your chat.