mcp-server-macos-defaults

mcp-server-macos-defaults MCP server

MCP server for reading/writing macOS defaults (settings)

Components

Tools

• list-domains:
  • equivalent to running defaults domains
• find:
  • equivalent to running defaults find <word>
• defaults-read:
  • equivalent to running defaults read <domain> <key>
  • if key is not provided, the entire domain is read
• defaults-write:
  • equivalent to running defaults write <domain> <key> <value>

Quickstart

Install

Claude Desktop

On MacOS: ~/Library/Application\ Support/Claude/claude_desktop_config.json On Windows: %APPDATA%/Claude/claude_desktop_config.json

"mcpServers": {
  "mcp-server-macos-defaults": {
    "command": "uv",
    "args": [
      "--directory",
      "/path/to/mcp-server-macos-defaults",
      "run",
      "mcp-server-macos-defaults"
    ]
  }
}

"mcpServers": {
  "mcp-server-macos-defaults": {
    "command": "uvx",
    "args": [
      "mcp-server-macos-defaults"
    ]
  }
}

Development

Building and Publishing

To prepare the package for distribution:

1. Sync dependencies and update lockfile:

uv sync

2.  Build package distributions:

    ```shell
uv build

This will create source and wheel distributions in the dist/ directory.

3. Publish to PyPI:

uv publish

    Note: You'll need to set PyPI credentials via environment variables or command flags:

    *   Token: `--token` or `UV_PUBLISH_TOKEN`
    *   Or username/password: `--username`/`UV_PUBLISH_USERNAME` and `--password`/`UV_PUBLISH_PASSWORD`

### Debugging

Since MCP servers run over stdio, debugging can be challenging. For the best debugging
experience, we strongly recommend using the [MCP Inspector](https://github.com/modelcontextprotocol/inspector).

You can launch the MCP Inspector via [`npm`](https://docs.npmjs.com/downloading-and-installing-node-js-and-npm) with this command:

```shell
npx @modelcontextprotocol/inspector uv --directory /path/to/mcp-server-macos-defaults run mcp-server-macos-defaults

Upon launching, the Inspector will display a URL that you can access in your browser to begin debugging.