Roblox Studio MCP server

The Roblox Studio MCP Server enables communication between Roblox Studio and AI tools like Claude Desktop or Cursor, allowing these tools to interact with your Roblox projects through a plugin interface. The server handles requests between Studio and AI applications using the Model Context Protocol (MCP).

Installation Options

Using Pre-built Releases

1. Make sure you have Roblox Studio and either Claude Desktop or Cursor installed and launched at least once.

2. Close any running instances of Roblox Studio, Claude Desktop, and Cursor.

3. Download the latest installer:

   • Visit the releases page
   • Download the appropriate version for your operating system
   • Extract the files if necessary
   • Run the installer application

4. Restart Claude Desktop/Cursor and Roblox Studio after installation completes.

Manual Setup

To configure an MCP client manually:

1. Add the following to your MCP Client configuration:

{
  "mcpServers": {
    "Roblox Studio": {
      "args": [
        "--stdio"
      ],
      "command": "Path-to-downloaded\\rbx-studio-mcp.exe"
    }
  }
}

For macOS, use a path format like: "/Applications/RobloxStudioMCP.app/Contents/MacOS/rbx-studio-mcp"

Building From Source

1. Install Rust if you don't have it already.

2. Close any running instances of Roblox Studio and Claude Desktop/Cursor.

3. Download or clone the repository.

4. Open a terminal and navigate to the repository root.

5. Run the build and installation command:

cargo run

This command builds the MCP server, configures Claude, and installs the required Studio plugin.

Verifying Your Installation

After installation, confirm everything is working properly:

1. Open Roblox Studio and check that the MCP plugin appears in the Plugins tab.

2. Look for the message The MCP Studio plugin is ready for prompts. in the Studio console.

3. In Claude Desktop, click the hammer icon beneath the prompt field to see available Roblox Studio tools (insert_model and run_code).

If you encounter issues, try restarting both Studio and Claude Desktop (make sure Claude is fully closed, not just minimized to the system tray).

Using the MCP Server

1. Open a Roblox place in Studio.

2. Enter a prompt in Claude Desktop or Cursor. Accept any permission requests to communicate with Studio.

3. The AI can now interact with your project - you can verify actions by checking:

   • The Studio console for messages
   • The Explorer panel for changes to the data model
   • Visual changes in your place

When the AI needs to run a tool (like inserting a model or running code), the Studio plugin will receive and process these requests, allowing the AI to make changes to your Roblox project.

How to install this MCP server

For Claude Code

To add this MCP server to Claude Code, run this command in your terminal:

claude mcp add-json "Roblox-Studio" '{"command":"rbx-studio-mcp.exe","args":["--stdio"]}'

See the official Claude Code MCP documentation for more details.

For Cursor

There are two ways to add an MCP server to Cursor. The most common way is to add the server globally in the ~/.cursor/mcp.json file so that it is available in all of your projects.

If you only need the server in a single project, you can add it to the project instead by creating or adding it to the .cursor/mcp.json file.

Adding an MCP server to Cursor globally

To add a global MCP server go to Cursor Settings > Tools & Integrations and click "New MCP Server".

When you click that button the ~/.cursor/mcp.json file will be opened and you can add your server like this:

{
    "mcpServers": {
        "Roblox Studio": {
            "command": "rbx-studio-mcp.exe",
            "args": [
                "--stdio"
            ]
        }
    }
}

Adding an MCP server to a project

To add an MCP server to a project you can create a new .cursor/mcp.json file or add it to the existing one. This will look exactly the same as the global MCP server example above.

How to use the MCP server

Once the server is installed, you might need to head back to Settings > MCP and click the refresh button.

The Cursor agent will then be able to see the available tools the added MCP server has available and will call them when it needs to.

You can also explicitly ask the agent to use the tool by mentioning the tool name and describing what the function does.

For Claude Desktop

To add this MCP server to Claude Desktop:

1. Find your configuration file:

• macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
• Windows: %APPDATA%\Claude\claude_desktop_config.json
• Linux: ~/.config/Claude/claude_desktop_config.json

2. Add this to your configuration file:

{
    "mcpServers": {
        "Roblox Studio": {
            "command": "rbx-studio-mcp.exe",
            "args": [
                "--stdio"
            ]
        }
    }
}

3. Restart Claude Desktop for the changes to take effect