Serena MCP Server

Semantic code analysis and refactoring tools for AI-driven coding agents.

Data last scanned last week · Reviewed last month

23 1 dangerous tool6 tools★ 27,208PythonMIT

Overview

Serena provides an agent-first suite of tools designed to act as an IDE for AI coding assistants. By operating at the symbol level and leveraging the relational structure of code, it moves beyond basic line-number manipulation or primitive string searching to facilitate complex refactoring and navigation tasks. The server integrates with any MCP-compliant client to enable faster and more reliable code management in large or complex repositories. Users are advised to avoid marketplace installations and follow the project's official Quick Start guide to ensure they use the correct setup.

Our verdict

With a security score of 53/100, this server is classified as high-risk. While the repository is active and supported by a large community, critical aspects such as OAuth support, read-only modes, and authentication methods have not been editorially reviewed. Given these unknowns, Serena should be utilized with caution and is recommended primarily for users comfortable assessing the risks of third-party integration tools.

Zero direct dependencies minimizes supply-chain surface area
Uses symbol-level analysis for complex refactoring
Actively maintained with recent commits

Authentication methods remain unreviewed
Read-only mode implementation is not yet audited
Third-party status lacks official vendor oversight

Tools

Tool	Description	Risk
search_for_pattern	Flexible regex search across the codebase.	low
replace_content	Agent-optimised regex-based and literal text replacement.	medium
list_dir	Directory listing.	low
find_file	File search.	low
read_file	Read files or file chunks.	low
execute_shell_command	Run shell commands (e.g. builds, tests, linters).	high

Compatibility

Client	Local	Docker	Remote	Read-only
ChatGPT
Claude Desktop
Cursor
VS Code
Windsurf

Frequently asked questions

›How should I install the Serena MCP server?

You should follow the Quick Start instructions provided in the README. Do not install via an MCP or plugin marketplace, as those sources may contain outdated or suboptimal installation commands.

›What are the two ways to connect the Serena MCP server to my client?

You can either provide your client with a launch command that allows it to start the server, or you can start the server manually in HTTP mode and provide the client with the server's URL.

›What are the supported backends for Serena's code analysis and editing?

Serena supports two backends: language servers implementing the Language Server Protocol (LSP), which is the default, or the Serena JetBrains Plugin, which leverages JetBrains IDE capabilities.

›Which types of AI clients can integrate with Serena?

Serena integrates with terminal-based clients like Claude Code and Codex, IDEs and assistant plugins for VSCode, Cursor, and JetBrains, as well as desktop and web clients like Claude Desktop and OpenWebUI.