unity-mcp/Server
dsarno 17c6a36c8d
feat: Add beta server mode with PyPI pre-release support (#640)
* feat: add TestPyPI toggle for pre-release server package testing

- Add UseTestPyPI editor preference key
- Add TestPyPI toggle to Advanced settings UI with tooltip
- Configure uvx to use test.pypi.org when TestPyPI mode enabled
- Skip version pinning in TestPyPI mode to get latest pre-release
- Update ConfigJsonBuilder to handle TestPyPI index URL

* Update .meta file

* fix: Use PyPI pre-release versions instead of TestPyPI for beta server

TestPyPI has polluted packages (broken httpx, mcp, fastapi) that cause
server startup failures. Switch to publishing beta versions directly to
PyPI as pre-releases (e.g., 9.3.0b20260127).

Key changes:
- beta-release.yml: Publish to PyPI instead of TestPyPI, use beta suffix
- Use --prerelease explicit with version specifier (>=0.0.0a0) to only
  get prereleases of our package, not broken dependency prereleases
- Default "Use Beta Server" toggle to true on beta branch
- Rename UI label from "Use TestPyPI" to "Use Beta Server"
- Add UseTestPyPI to EditorPrefsWindow known prefs
- Add search field and refresh button to EditorPrefsWindow

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

* feat: Add beta mode indicator to UI badge and server version logging

- Show "β" suffix on version badge when beta server mode is enabled
- Badge updates dynamically when toggle changes
- Add server version to startup log: "MCP for Unity Server v9.2.0 starting up"
- Add version field to /health endpoint response

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

* refactor: Rename UseTestPyPI to UseBetaServer and fix EditorPrefs margin

- Rename EditorPref key from UseTestPyPI to UseBetaServer for clarity
- Rename all related variables and UXML element names
- Increase bottom margin on EditorPrefs search bar to prevent clipping first entry

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

* refactor: Address code review feedback

- Centralize beta server uvx args in AssetPathUtility.GetBetaServerFromArgs()
  to avoid duplication between HTTP and stdio transports
- Cache server version at startup instead of calling get_package_version()
  on every /health request
- Add robustness to beta version parsing in workflow: strip existing
  pre-release suffix and validate X.Y.Z format before parsing

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

* Prioritize explicit fromUrl override and optimize search filter

- GetBetaServerFromArgs/GetBetaServerFromArgsList now check for explicit
  GitUrlOverride before applying beta server mode, ensuring local dev
  paths and custom URLs are honored
- EditorPrefsWindow search filter uses IndexOf with OrdinalIgnoreCase
  instead of ToLowerInvariant().Contains() for fewer allocations

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

---------

Co-authored-by: Marcus Sanatan <msanatan@gmail.com>
Co-authored-by: Claude Sonnet 4.5 <noreply@anthropic.com>
2026-01-27 11:34:11 -08:00
..
src feat: Add beta server mode with PyPI pre-release support (#640) 2026-01-27 11:34:11 -08:00
tests [FEATURE] Procedural Texture2D/Sprite Generation (#621) 2026-01-24 17:09:07 -05:00
DOCKER_OVERVIEW.md Publish to Docker Hub (#468) 2025-12-19 17:24:04 -04:00
Dockerfile Docker mcp gateway (#603) 2026-01-21 16:00:11 -04:00
LICENSE Publish to pypi (#466) 2025-12-19 16:43:44 -04:00
README.md chore: bump version to 9.2.0 2026-01-23 05:34:19 +00:00
__init__.py Copy the MCP server to the top level (#354) 2025-10-25 00:53:53 -04:00
pyproject.toml chore: bump version to 9.2.0 2026-01-23 05:34:19 +00:00
pyrightconfig.json Copy the MCP server to the top level (#354) 2025-10-25 00:53:53 -04:00
uv.lock [FEATURE] Procedural Texture2D/Sprite Generation (#621) 2026-01-24 17:09:07 -05:00

README.md

MCP for Unity Server

MCP python License Discord

Model Context Protocol server for Unity Editor integration. Control Unity through natural language using AI assistants like Claude, Cursor, and more.

Maintained by Coplay - This project is not affiliated with Unity Technologies.

💬 Join our community: Discord Server

Required: Install the Unity MCP Plugin to connect Unity Editor with this MCP server. You also need uvx (requires uv) to run the server.


Installation

Option 1: PyPI

Install and run directly from PyPI using uvx.

Run Server (HTTP):

uvx --from mcpforunityserver mcp-for-unity --transport http --http-url http://localhost:8080

MCP Client Configuration (HTTP):

{
  "mcpServers": {
    "UnityMCP": {
      "url": "http://localhost:8080/mcp"
    }
  }
}

MCP Client Configuration (stdio):

{
  "mcpServers": {
    "UnityMCP": {
      "command": "uvx",
      "args": [
        "--from",
        "mcpforunityserver",
        "mcp-for-unity",
        "--transport",
        "stdio"
      ]
    }
  }
}

Option 2: From GitHub Source

Use this to run the latest released version from the repository. Change the version to main to run the latest unreleased changes from the repository.

{
  "mcpServers": {
    "UnityMCP": {
      "command": "uvx",
      "args": [
        "--from",
        "git+https://github.com/CoplayDev/unity-mcp@v9.2.0#subdirectory=Server",
        "mcp-for-unity",
        "--transport",
        "stdio"
      ]
    }
  }
}

Option 3: Docker

Use Pre-built Image:

docker run -p 8080:8080 msanatan/mcp-for-unity-server:latest --transport http --http-url http://0.0.0.0:8080

Build Locally:

docker build -t unity-mcp-server .
docker run -p 8080:8080 unity-mcp-server --transport http --http-url http://0.0.0.0:8080

Configure your MCP client with "url": "http://localhost:8080/mcp".

Option 4: Local Development

For contributing or modifying the server code:

# Clone the repository
git clone https://github.com/CoplayDev/unity-mcp.git
cd unity-mcp/Server

# Run with uv
uv run src/main.py --transport stdio

Configuration

The server connects to Unity Editor automatically when both are running. No additional configuration needed.

Environment Variables:

  • DISABLE_TELEMETRY=true - Opt out of anonymous usage analytics
  • LOG_LEVEL=DEBUG - Enable detailed logging (default: INFO)

Example Prompts

Once connected, try these commands in your AI assistant:

  • "Create a 3D player controller with WASD movement"
  • "Add a rotating cube to the scene with a red material"
  • "Create a simple platformer level with obstacles"
  • "Generate a shader that creates a holographic effect"
  • "List all GameObjects in the current scene"

Documentation

For complete documentation, troubleshooting, and advanced usage:

📖 Full Documentation


Requirements

  • Python: 3.10 or newer
  • Unity Editor: 2021.3 LTS or newer
  • uv: Python package manager (Installation Guide)

License

MIT License - See LICENSE