uMCP

uMCP is a server implementation of the MCP protocol, designed for working with the AI in Unity.
It is a minimalistic and efficient server that can be used to connect AI agents to Unity applications.

Features

- Safety: uMCP does not allow the AI ​​to execute arbitrary code, and any and all operations can only be performed through pre-authorized operations.
- Extensible: uMCP is designed to be easily extensible, allowing you to add your own custom commands and operations via McpServerToolType and McpServerTool attribute.
- You can find examples in the Assets/NatsunekoLaboratory/ModelContextProtocol/ManagementTools directory.

How it works (What is different from other MCP implementations)

uMCP could directly communicate with the MCP client using the Streamable HTTP protocol, without any other dependencies.
This allows for a more efficient and lightweight implementation compared to other MCP servers that rely on that requires additional dependencies such as Python, Node.js or other language runtimes.

Your MCP Client <-- Streamable HTTP --> uMCP Server

Installation

Prerequisites

- Unity Editor: Version 2022.3 LTS or newer.
- The MCP client must support Streamable HTTP (e.g., VSCode Agent Mode, Cursor, CLINE, etc.).

1. Install the CoreFramework

Using Unity Package Manager

1. openupm add com.natsuneko.modelcontextprotocol.core-framework
2. Open your Unity project.

Using Git URL

1. Open your Unity project.
2. Go to Window > Package Manager.
3. Click + to Add package from git URL....
4. Enter the URL:

   https://github.com/mika-f/uMCP.git?path=/Assets/NatsunekoLaboratory/ModelContextProtocol/CoreFramework

   

2. Install the Management Tools (and other packages)

Using Unity Package Manager

- openupm add com.natsuneko.modelcontextprotocol.management-tools
- openupm add com.natsuneko.modelcontextprotocol.vrchat-world-tools

Using Git URL

1. Open your Unity project.
2. Go to Window > Package Manager.
3. Click + to Add package from git URL....
4. Enter the URL:

   https://github.com/mika-f/uMCP.git?path=/Assets/NatsunekoLaboratory/ModelContextProtocol/MagagementTools

   

3. Configure your MCP client

Connect your MCP client that support Streamable HTTP (VSCode Agent Mode, Cursor, CLINE, etc.) to the MCP server.

```bash
http://localhost:7225/sse