MCP integration

v1.37.0

Model Context Protocol (MCP) is an open standard that enables AI models to interact with external tools and services through a unified interface. The moon CLI contains an MCP server that you can register with your code editor to allow LLMs to use moon directly.

Setup

Claude Code

To use MCP servers in Claude Code, run the following command in your terminal:

claude mcp add moon -s project -e MOON_WORKSPACE_ROOT=/absolute/path/to/your/moon/workspace -- moon mcp

Or create an .mcp.json file in your project directory.

{
  "mcpServers": {
    "moon": {
      "command": "moon",
      "args": ["mcp"],
      "env": {
        "MOON_WORKSPACE_ROOT": "/absolute/path/to/your/moon/workspace"
      }
    }
  }
}

Cursor

To use MCP servers in Cursor, create a .cursor/mcp.json file in your project directory, or ~/.cursor/mcp.json globally, with the following content:

.cursor/mcp.json

{
  "mcpServers": {
    "moon": {
      "command": "moon",
      "args": ["mcp"],
      "env": {
        "MOON_WORKSPACE_ROOT": "/absolute/path/to/your/moon/workspace"
      }
    }
  }
}

Once configured, the moon MCP server should appear in the "Available Tools" section on the MCP settings page in Cursor.

VS Code

To use MCP servers in VS Code, you must have the Copilot Chat extension installed. Once installed, create a .vscode/mcp.json file with the following content:

.vscode/mcp.json

{
  "servers": {
    "moon": {
      "type": "stdio",
      "command": "moon",
      "args": ["mcp"],
      // >= 1.102 (June 2025)
      "cwd": "${workspaceFolder}",
      // Older versions
      "env": {
        "MOON_WORKSPACE_ROOT": "${workspaceFolder}"
      }
    }
  }
}

Once your MCP server is configured, you can use it with GitHub Copilot’s agent mode:

• Open the Copilot Chat view in VS Code
• Enable agent mode using the mode select dropdown
• Toggle on moon's MCP tools using the "Tools" button

Zed

To use MCP servers in Zed, create a .zed/settings.json file in your project directory, or ~/.config/zed/settings.json globally, with the following content:

.zed/settings.json

{
  "context_servers": {
    "moon": {
      "command": {
        "path": "moon",
        "args": ["mcp"],
        "env": {
          "MOON_WORKSPACE_ROOT": "/absolute/path/to/your/moon/workspace"
        }
      }
    }
  }
}

Once your MCP server is configured, you'll need to enable the tools using the following steps:

• Open the Agent panel in Zed
• Click the Write/Ask toggle button and go to "Configure Profiles"
• Click "Customize" in the Ask section
• Click "Configure MCP Tools"
• Enable each tool under the "moon" section

Available tools

The following tools are available in the moon MCP server and can be executed by LLMs using agent mode.

• get_project - Get a project and its tasks by id.
• get_projects - Get all projects.
• get_task - Get a task by target.
• get_tasks - Get all tasks.
• get_touched_files - Gets touched files between base and head revisions. v1.38.0
• sync_projects - Runs the SyncProject action for one or many projects by id. v1.38.0
• sync_workspace - Runs the SyncWorkspace action. v1.38.0

info

The request and response shapes for these tools are defined as TypeScript types in the @moonrepo/types package.