dev.breadpack.UnityMcpBridge 0.3.0

There is a newer version of this package available.
See the version list below for details.
dotnet tool install --global dev.breadpack.UnityMcpBridge --version 0.3.0
                    
This package contains a .NET tool you can call from the shell/command line.
dotnet new tool-manifest
                    
if you are setting up this repo
dotnet tool install --local dev.breadpack.UnityMcpBridge --version 0.3.0
                    
This package contains a .NET tool you can call from the shell/command line.
#tool dotnet:?package=dev.breadpack.UnityMcpBridge&version=0.3.0
                    
nuke :add-package dev.breadpack.UnityMcpBridge --version 0.3.0
                    

Unity MCP

npm NuGet License: MIT

Unity MCP (Model Context Protocol) Bridge — Connect AI agents to Unity Editor.

Architecture

AI Agent (Claude, Cursor, etc.)
    ↕ stdio (MCP protocol)
UnityMcpBridge (.NET)
    ↕ TCP (binary protocol)
Unity Editor (UnityMcpEditor package)

Two components are required:

Component Role Install method
UnityMcpBridge .NET MCP server (stdio ↔ TCP) npx / dotnet tool / clone
UnityMcpEditor Unity Editor plugin (TCP server + handlers) UPM git URL

Claude Code 플러그인으로 설치 (권장)

Claude Code에서 한 줄로 설치:

/plugin install --from github:breadpack/UnityMcp

또는 프로젝트 .claude/settings.json에 등록:

{
  "enabledPlugins": {
    "unity-mcp": {
      "source": {
        "source": "github",
        "repo": "breadpack/UnityMcp"
      }
    }
  }
}

설치 시 포트, 자동 저장, 컴파일/리로드 체크 등의 옵션을 프롬프트로 설정할 수 있다.

포함 내용:

  • MCP 서버 (unity-bridge) — 45+ Unity 도구
  • Skills 6개 — 워크플로우 가이드
  • Agents 3개 — unity-scene-architect, unity-debugger, unity-asset-manager
  • Hooks — 컴파일/도메인 리로드 자동 감지 및 대기

Quick Start

Step 1. Install MCP Bridge

No pre-install needed — just configure and go (see Step 3).

Or install globally:

# npx (recommended, no .NET required)
npx -y unity-mcp-bridge

# dotnet tool (requires .NET 9.0+ SDK)
dotnet tool install -g dev.breadpack.UnityMcpBridge

Step 2. Install Unity Editor Package

Requires Unity 6000.0+ (Unity 6)

Open Unity Editor > Window > Package Manager > + > Add package from git URL:

https://github.com/breadpack/UnityMcp.git?path=UnityMcpEditor

Newtonsoft.Json (com.unity.nuget.newtonsoft-json) is auto-resolved as a dependency. No other prerequisites required.

Step 3. Configure your AI tool

Add MCP server configuration to your AI tool:

<details> <summary><b>Claude Code</b> (.mcp.json in project root)</summary>

{
  "mcpServers": {
    "unity": {
      "command": "npx",
      "args": ["-y", "unity-mcp-bridge"]
    }
  }
}

Or via CLI:

claude mcp add unity -- npx -y unity-mcp-bridge

</details>

<details> <summary><b>Claude Desktop</b></summary>

Edit %APPDATA%/Claude/claude_desktop_config.json (Windows) or ~/Library/Application Support/Claude/claude_desktop_config.json (macOS):

{
  "mcpServers": {
    "unity": {
      "command": "npx",
      "args": ["-y", "unity-mcp-bridge"]
    }
  }
}

</details>

<details> <summary><b>Cursor / VS Code</b> (.cursor/mcp.json or .vscode/mcp.json)</summary>

{
  "mcpServers": {
    "unity": {
      "command": "npx",
      "args": ["-y", "unity-mcp-bridge"]
    }
  }
}

</details>

<details> <summary><b>Using dotnet tool instead</b></summary>

If you installed via dotnet tool install -g, use the command directly:

{
  "mcpServers": {
    "unity": {
      "command": "unity-mcp-bridge"
    }
  }
}

</details>

Step 4. Verify

Open Unity Editor with the package installed, then ask your AI agent:

"Unity에 ping을 보내줘"

Alternative: Clone and Build

If you prefer to build from source:

git clone https://github.com/breadpack/UnityMcp.git
cd UnityMcp/UnityMcpBridge
dotnet run

Configure with:

{
  "mcpServers": {
    "unity": {
      "command": "dotnet",
      "args": ["run", "--project", "/path/to/UnityMcp/UnityMcpBridge"]
    }
  }
}

Requires .NET 9.0+ SDK

Configuration

Environment Variable Default Description
UNITY_TCP_PORT 9876 TCP port to connect to Unity Editor

Example with custom port:

{
  "mcpServers": {
    "unity": {
      "command": "unity-mcp-bridge",
      "env": { "UNITY_TCP_PORT": "9877" }
    }
  }
}

Claude Code Plugin (Skills 포함)

Claude Code에서 스킬(슬래시 커맨드)과 함께 사용하려면 플러그인으로 설치할 수 있습니다.

Plugin 설치

방법 A: GitHub에서 설치 (권장)

claude plugin install --from https://github.com/breadpack/UnityMcp

방법 B: 로컬 클론 후 설치

git clone https://github.com/breadpack/UnityMcp.git
claude --plugin-dir ./UnityMcp

Plugin 설치 시 MCP 서버 설정(.mcp.json)이 자동으로 적용되므로, Step 3의 수동 설정은 불필요합니다. Unity Editor 패키지(Step 2)는 별도로 설치해야 합니다.

제공 Skills

Plugin을 설치하면 다음 슬래시 커맨드를 사용할 수 있습니다:

Skill 명령어 설명
Scene Setup /unity-mcp:unity-scene-setup 씬 구성 워크플로우 — GameObject 생성, 계층 구조, 컴포넌트 설정
UI Build /unity-mcp:unity-ui-build UGUI(Canvas) 및 UI Toolkit UI 구축 가이드
Material Setup /unity-mcp:unity-material-setup Material 생성, 셰이더 프로퍼티 설정 레퍼런스
Prefab Workflow /unity-mcp:unity-prefab-workflow Prefab 인스턴스화, 편집 모드, 저장
Debug /unity-mcp:unity-debug 콘솔 로그, 스크린샷, Animator 상태 검사
Build & Deploy /unity-mcp:unity-build-deploy 빌드 실행, Project Settings 관리

Plugin 사용 예시

> /unity-mcp:unity-scene-setup
> 3D 플랫포머 게임의 기본 씬을 구성해줘.
> 바닥(Plane), 플레이어(Capsule+Rigidbody+CapsuleCollider), 카메라를 배치해줘.
> /unity-mcp:unity-debug
> 현재 씬에서 에러가 발생하는 원인을 찾아줘.

Available Tools (35)

Observation (14)

Tool Description
unity_ping Check Unity Editor connection
unity_get_hierarchy Get scene hierarchy
unity_get_asset_hierarchy Inspect Prefab/Scene hierarchy without opening
unity_get_component_details Get component property details
unity_get_screen Get current screen info (Play Mode)
unity_get_ui_tree Get UI Toolkit visual tree (Play Mode)
unity_get_ugui_tree Get UGUI Canvas hierarchy
unity_get_console_logs Get console log entries
unity_get_available_actions List clickable UI actions (Play Mode)
unity_take_screenshot Capture game view screenshot (Play Mode)
unity_render_uxml Render UXML to image
unity_refresh_assets Refresh AssetDatabase
unity_addressable_add Add asset to Addressable group (requires package)
unity_addressable_set_address Set Addressable asset address (requires package)

Scene Manipulation (10)

Tool Description
unity_create_gameobject Create new GameObject
unity_delete_gameobject Delete GameObject (dryRun supported)
unity_reparent_gameobject Change parent of GameObject
unity_set_transform Set position / rotation / scale
unity_set_active Activate / deactivate GameObject
unity_select_gameobject Select and ping in Editor
unity_save_scene Save current scene
unity_load_scene Open scene (Single / Additive)
unity_play_mode Enter / exit / toggle Play Mode
unity_instantiate_prefab Instantiate prefab in scene

Component & Property (4)

Tool Description
unity_add_component Add component to GameObject
unity_remove_component Remove component (dryRun supported)
unity_set_property Set component property (dot-notation, array, asset ref)
unity_set_asset_reference Set asset reference on component field

Material (2)

Tool Description
unity_create_material Create new Material asset
unity_set_material_property Set material property (color, float, texture, vector)

Asset Management (1)

Tool Description
unity_manage_asset Move / copy / delete asset, create folder

Prefab (1)

Tool Description
unity_prefab_edit Enter / save / exit Prefab edit mode

Animation (1)

Tool Description
unity_animator_control Set Animator parameters, query state (Play Mode)

Build & Settings (2)

Tool Description
unity_build Build player (Windows, macOS, Linux, Android, iOS, WebGL)
unity_project_settings Read / write PlayerSettings, QualitySettings, Physics, Time

Conditional Features

Addressables Support

To enable Addressable tools, add the scripting define symbol to your Unity project:

  1. Edit > Project Settings > Player > Scripting Define Symbols
  2. Add UNITY_MCP_ADDRESSABLES

Update

npx는 자동으로 최신 버전을 사용합니다. dotnet tool을 사용하는 경우:

dotnet tool update -g dev.breadpack.UnityMcpBridge

License

MIT

Product Compatible and additional computed target framework versions.
.NET net9.0 is compatible.  net9.0-android was computed.  net9.0-browser was computed.  net9.0-ios was computed.  net9.0-maccatalyst was computed.  net9.0-macos was computed.  net9.0-tvos was computed.  net9.0-windows was computed.  net10.0 was computed.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-windows was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

This package has no dependencies.

Version Downloads Last Updated
0.6.3 64 4/28/2026
0.6.2 56 4/28/2026
0.6.1 56 4/28/2026
0.6.0 89 4/26/2026
0.3.0 95 4/11/2026
0.1.0 108 3/11/2026