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plugin official · Anthropic

serena — Claude Code plugin: what it does, how to install

Semantic code analysis MCP server with Language Server Protocol integration. Helps explore codebases and suggest refactorings.

Install into Claude Code · Plugin marketplace All methods and platforms ↓
/plugin install serena@claude-plugins-official
/plugin marketplace add anthropics/claude-plugins-official
Open on GitHub

What serena does

This plugin configures a semantic code analysis MCP server for Claude Code. It links the agent with the Language Server Protocol (LSP) to inspect code relationships instead of relying on basic text search.

The server assists with codebase navigation and suggests targeted refactoring steps. Its functionality depends entirely on Language Server Protocol support.

What it helps with

  • navigate project codebases via LSP
  • generate refactoring suggestions from semantic structure
  • connect semantic code analysis to Claude Code

Example prompts for the agent

  • Find all references to this method across the codebase using LSP
  • Suggest refactoring options for this file based on semantic analysis

How to install serena

Plugin marketplace

/plugin install serena@claude-plugins-official
/plugin marketplace add anthropics/claude-plugins-official

Step by step, with commands for each platform: Claude Code plugins: marketplaces, installing, and building your own

Questions about serena

How to install serena in Claude Code?

First, register the marketplace using /plugin marketplace add anthropics/claude-plugins-official. Then install the package by running /plugin install serena@claude-plugins-official.

What is the serena plugin used for?

It integrates an MCP server that provides code navigation and refactoring suggestions via the Language Server Protocol.

What protocol does serena rely on?

It uses the Language Server Protocol (LSP) to understand code semantics and navigate dependencies.

Source text

serena · Apache-2.0
Semantic code analysis MCP server providing intelligent code understanding, refactoring suggestions, and codebase navigation through language server protocol integration.

© Oraios · Apache-2.0 · anthropics/claude-plugins-official

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