Emacs MCP Server

Model Context Protocol (MCP) server for Emacs. Enables generating and running elisp code in a running Emacs process.

Tools

The server exposes two tools:

generate_emacs_lisp_code: generates elisp for a given task
execute_emacs_lisp_code: passes elisp to a running Emacs (via emacsclient) to eval and execute it.

Invocation

The project is managed with uv. First, run uv sync to install all dependencies. Then source .venv/bin/activate to activate the resulting venv.

To run the MCP server in the inspector:

mcp dev emacs_mcp_server.py

To install the MCP server so that Claude Desktop can use it:

mcp install emacs_mcp_server.py

But you will have to edit the resulting JSON config in claude_desktop_config.json to include API keys and the full path to emacsclient. It should look something like this:

    "Emacs-MCP-Server": {
      "command": "/Users/haldar/.local/bin/uv",
      "args": [
        "run",
        "--with",
        "mcp[cli]",
        "--with",
        "smartfunc",
        "mcp",
        "run",
        "/Users/haldar/repos/gh/emacs-mcp-server/emacs_mcp_server.py"
      ],
      "env": {
          "OPENAI_API_KEY": "sk-xxxx",
          "EMACSCLIENT": "/your/path/to/emacsclient"
      }
    }

This server cannot be installed

security - not tested

license - not tested

quality - not tested

local-only server

The server can only run on the client's local machine because it depends on local resources.

A Model Context Protocol server that enables generating and executing Elisp code in a running Emacs process, allowing AI assistants to control and interact with Emacs.

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