MCP or Not?

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OfficialClaude connector: not verified

Serena MCP server & Claude connector

Does Serena have an official MCP server or Claude connector?

Official

As of October 2026, Serena is itself an MCP server: a coding-agent toolkit published by the oraios organization, whose maintainers document it at oraios.github.io and in the oraios/serena repository. It runs locally over stdio or localhost HTTP with no sign-in. Its default tool set includes shell execution and file editing, and no general read-only mode is documented.

Last checked

Verdict and evidence

What we checked
Serena MCP server
Published by
oraios (Serena project) (official)
Runs
Runs locally
Sign-in
None
Stage
Generally available
Plan
Free, open source; needs uv.

Evidence

What an AI can do in Serena

Read

  • Find a symbolfind_symbol
  • Find referencing symbolsfind_referencing_symbols
  • Get a file's symbol overviewget_symbols_overview

Create

  • Create or overwrite a text filecreate_text_file
  • Write a project memorywrite_memory

Update

  • Replace a symbol's bodyreplace_symbol_body
  • Rename a symbol codebase-widerename_symbol

Run

  • Execute a shell commandexecute_shell_command

From the publisher’s documentation for the version we checked. Not every tool is listed.

Setup

Claude Code

Install with uv, run serena init, then register the server (README says not to install via a marketplace).

claude mcp add --scope user serena -- serena start-mcp-server --context claude-code --project-from-cwd
Source

Claude (claude.ai / Desktop)

Add a stdio entry to claude_desktop_config.json.

{
  "mcpServers": {
    "serena": {
      "command": "serena",
      "args": [
        "start-mcp-server",
        "--context=desktop-app"
      ]
    }
  }
}
Source

VS Code

Run MCP: Add Server, choose Command (stdio), and enter the command.

serena start-mcp-server --context=vscode
Source

Cursor

Use the ide context; the page gives no Cursor-specific JSON.

serena start-mcp-server --context ide
Source

Safety check

  • Pass

    Publisher verified

    Project docs at oraios.github.io and README in the oraios/serena repo are the maintainers' own; the org's profile site is oraios-ai.de. The GitHub org is not marked verified. Serena is the project, so there is no separate vendor.

  • Pass

    Auth model

    No account or token. Stdio by default; optional streamable HTTP binds to localhost by default and the docs warn about exposing it.

  • Flag

    Write and delete access

    Default-enabled tools include execute_shell_command, create_text_file, replace_content, replace_in_files, delete_memory. The security page says shell and edit tools are intended and recommends sandboxing. A read_only project setting exists but does not stop REPL code.

  • Pass

    Tool-description injection scan

    Read the docs tool table. Two AI-addressed notes are usage guidance, not override attempts: delete_memory says to call only if instructed explicitly or permitted by the user; execute_shell_command says to read suggested-command memories first. Source tool descriptions not read.

  • Pass

    Repo maintenance

    oraios/serena pushed 2026-10-15, not archived, 30366 stars, license field reported as 'other' (not a standard SPDX id).

FAQ

Is Serena an official MCP server?

Serena is itself an MCP server published by its maintainers, the oraios organization. There is no separate vendor product it stands in for.

Does it need an account or API key?

No. It runs locally; the LLM work is done by your own client.

Can it run shell commands and edit files?

Yes, by default. execute_shell_command and file-editing tools are enabled; the docs recommend a sandbox or restricted tool set.

Is there a read-only mode?

Not a general one. A read_only project setting blocks Serena's own editing tools, but the REPL can still change files.

Is it a Claude connector?

Not verified. It installs locally with uv; the README tells users not to install it via a marketplace.

Last reviewed .

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MCP or Not: Official · Checked Oct 2026

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