Serena
Semantic code analysis MCP server providing intelligent code understanding, refactoring suggestions, and codebase navigation through language server protocol integration.
- Type
- Plugin
- Repository
- anthropics/claude-plugins-official
- GitHub stars
- 37.1k
- License
- Apache-2.0
- Repo last updated
- Sep 25, 2026
- Author
- Oraios
What Serena is
Serena is a plugin published in the anthropics/claude-plugins-official repository on GitHub, which has about 37.1k stars. The repository describes itself as: “Official, Anthropic-managed directory of high quality Claude Code Plugins.”
A plugin is a package that bundles skills, slash commands, subagents, hooks, and MCP connectors so they install together. Plugins are plain files with a manifest at .claude-plugin/plugin.json, and they work in both Claude Code and Claude Cowork.
Installing Serena adds everything it ships in one step. Connectors inside a plugin still need to be connected separately, and hooks and subagents only run in Cowork and Claude Code, not in regular chat.
How to install Serena
Claude Code
- Add the repository as a plugin marketplace: claude plugin marketplace add anthropics/claude-plugins-official
- Install the plugin: claude plugin install serena@<marketplace-name>, using the marketplace name from the repository's .claude-plugin/marketplace.json.
- Restart the session if the new skills or commands don't appear straight away.
Claude Cowork
- Open Customize → Plugins and choose Add marketplace.
- Enter anthropics/claude-plugins-official (the owner/repo shorthand works for GitHub).
- Find Serena in the list, click Install, then connect any connectors it needs from its Connectors tab.
New to extending Cowork? Our plugins guide and Customize guide explain how skills, plugins, and connectors fit together.
Inside the source file
We couldn't retrieve the source file for this entry. Browse the repository on GitHub to find it and read the README before installing.
Before you install
- Read the whole file first. Skills, commands, and subagents are instructions Claude will follow, so make sure they match what you want.
- Check which tools, scripts, or MCP servers it uses. Local servers and scripts run with your permissions.
- Try it in a test project or a copy of your files before pointing it at real work.
- Pin the version you tested, and review changes before updating.
- Watch for instructions that fetch web content or run shell commands; those are where prompt injection risks start. See our prompt injection guide.
FAQ
What is Serena?
Serena is a plugin for Claude Code and Claude Cowork from the anthropics/claude-plugins-official repository on GitHub. Semantic code analysis MCP server providing intelligent code understanding, refactoring suggestions, and codebase navigation through language server protocol integration.
How do I install Serena in Claude Code?
Add the repository as a plugin marketplace: claude plugin marketplace add anthropics/claude-plugins-official Install the plugin: claude plugin install serena@<marketplace-name>, using the marketplace name from the repository's .claude-plugin/marketplace.json. Restart the session if the new skills or commands don't appear straight away.
Can I use Serena in Claude Cowork?
Open Customize → Plugins and choose Add marketplace. Enter anthropics/claude-plugins-official (the owner/repo shorthand works for GitHub). Find Serena in the list, click Install, then connect any connectors it needs from its Connectors tab.
Is Serena safe to install?
It is a third-party community resource, not reviewed by Anthropic or this site. Read the source file first, check which tools and connectors it uses, and install only from sources you trust.
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