unity-mcp/MCPForUnity
Marcus Sanatan f2c57ca91e
Add testing and move menu items to resources (#316)
* deps: add tomli>=2.3.0 dependency to UnityMcpServer package

* feat: dynamically fetch package version from pyproject.toml for telemetry

* Add pydantic

* feat: add resource registry for MCP resource auto-discovery

* feat: add telemetry decorator for tracking MCP resource usage

* feat: add auto-discovery and registration system for MCP resources

* feat: add resource registration to MCP server initialization

* feat: add MCPResponse model class for standardized API responses

* refactor: replace Debug.Log calls with McpLog wrapper for consistent logging

* feat: add test discovery endpoints for Unity Test Framework integration

We haven't connected them as yet, still thinking about how to do this neatly

* Fix server setup

* refactor: reduce log verbosity by changing individual resource/tool registration logs to debug level

* chore: bump mcp[cli] dependency from 1.15.0 to 1.17.0

* refactor: remove Context parameter and add uri keyword argument in resource decorator

The Context parameter doesn't work on our version of FastMCP

* chore: upgrade Python base image to 3.13 and simplify Dockerfile setup

* fix: apply telemetry decorator before mcp.tool to ensure proper wrapping order

* fix: swap order of telemetry and resource decorators to properly wrap handlers

* fix: update log prefixes for consistency in logging methods

* Fix compile errors

* feat: extend command registry to support both tools and resources

* Run get tests as a coroutine because it doesn't return results immediately

This works but it spams logs like crazy, maybe there's a better/simpler way

* refactor: migrate from coroutines to async/await for test retrieval and command execution

* feat: add optional error field to MCPResponse model

* Increased timeout because loading tests can take some time

* Make message optional so error responses that only have success and error don't cause Pydantic errors

* Set max_retries to 5

This connection module needs a lookover. The retries should be an exponential backoff and we could structure why it's failing so much

* Use pydantic model to structure the error output

* fix: initialize data field in GetTestsResponse to avoid potential errors

* Don't return path parameter

* feat: add Unity test runner execution with structured results and Python bindings

* refactor: simplify GetTests by removing mode filtering and related parsing logic

* refactor: move test runner functionality into dedicated service interface

* feat: add resource retrieval telemetry tracking with new record type and helper function

* fix: convert tool functions to async and await ctx.info calls

* refactor: reorganize menu item functionality into separate execute and get commands

An MCP resource for retrieval, and a simple command to execute. Because it's a resource, it's easier for the user to see what's in the menu items

* refactor: rename manage_menu_item to execute_menu_item and update tool examples to use async/await

We'll eventually put a section for resources

* Revert "fix: convert tool functions to async and await ctx.info calls"

This reverts commit 012ea6b7439bd1f2593864d98d03d9d95d7bdd03.

* fix: replace tomllib with tomli for Python 3.10 compatibility in telemetry module

* Remove confusing comment

* refactor: improve error handling and simplify test retrieval logic in GetTests commands

* No cache by default

* docs: remove redundant comment for HandleCommand method in ExecuteMenuItem
2025-10-13 11:16:43 -04:00
..
Editor Add testing and move menu items to resources (#316) 2025-10-13 11:16:43 -04:00
Runtime Rename plugin folder to MCPForUnity (#303) 2025-10-03 20:23:28 -04:00
UnityMcpServer~/src Add testing and move menu items to resources (#316) 2025-10-13 11:16:43 -04:00
Editor.meta Rename plugin folder to MCPForUnity (#303) 2025-10-03 20:23:28 -04:00
README.md Rename plugin folder to MCPForUnity (#303) 2025-10-03 20:23:28 -04:00
README.md.meta Rename plugin folder to MCPForUnity (#303) 2025-10-03 20:23:28 -04:00
Runtime.meta Rename plugin folder to MCPForUnity (#303) 2025-10-03 20:23:28 -04:00
package.json chore: bump version to 6.0.0 2025-10-11 07:12:26 +00:00
package.json.meta Rename plugin folder to MCPForUnity (#303) 2025-10-03 20:23:28 -04:00

README.md

MCP for Unity — Editor Plugin Guide

Use this guide to configure and run MCP for Unity inside the Unity Editor. Installation is covered elsewhere; this document focuses on the Editor window, client configuration, and troubleshooting.

Open the window

  • Unity menu: Window > MCP for Unity

The window has four areas: Server Status, Unity Bridge, MCP Client Configuration, and Script Validation.


Quick start

  1. Open Window > MCP for Unity.
  2. Click “Auto-Setup”.
  3. If prompted:
    • Select the server folder that contains server.py (UnityMcpServer~/src).
    • Install Python and/or uv if missing.
    • For Claude Code, ensure the claude CLI is installed.
  4. Click “Start Bridge” if the Unity Bridge shows “Stopped”.
  5. Use your MCP client (Cursor, VS Code, Windsurf, Claude Code) to connect.

Server Status

  • Status dot and label:
    • Installed / Installed (Embedded) / Not Installed.
  • Mode and ports:
    • Mode: Auto or Standard.
    • Ports: Unity (varies; shown in UI), MCP 6500.
  • Actions:
    • Auto-Setup: Registers/updates your selected MCP client(s), ensures bridge connectivity. Shows “Connected ✓” after success.
    • Rebuild MCP Server: Rebuilds the Python based MCP server
    • Select server folder…: Choose the folder containing server.py.
    • Verify again: Re-checks server presence.
    • If Python isnt detected, use “Open Install Instructions”.

Unity Bridge

  • Shows Running or Stopped with a status dot.
  • Start/Stop Bridge button toggles the Unity bridge process used by MCP clients to talk to Unity.
  • Tip: After Auto-Setup, the bridge may auto-start in Auto mode.

MCP Client Configuration

  • Select Client: Choose your target MCP client (e.g., Cursor, VS Code, Windsurf, Claude Code).
  • Per-client actions:
    • Cursor / VS Code / Windsurf:
      • Auto Configure: Writes/updates your config to launch the server via uv:
        • Command: uv
        • Args: run --directory server.py
      • Manual Setup: Opens a window with a pre-filled JSON snippet to copy/paste into your client config.
      • Choose uv Install Location: If uv isnt on PATH, select the uv binary.
      • A compact “Config:” line shows the resolved config file name once uv/server are detected.
    • Claude Code:
      • Register with Claude Code / Unregister MCP for Unity with Claude Code.
      • If the CLI isnt found, click “Choose Claude Install Location”.
      • The window displays the resolved Claude CLI path when detected.

Notes:

  • The UI shows a status dot and a short status text (e.g., “Configured”, “uv Not Found”, “Claude Not Found”).
  • Use “Auto Configure” for one-click setup; use “Manual Setup” when you prefer to review/copy config.

Script Validation

  • Validation Level options:
    • Basic — Only syntax checks
    • Standard — Syntax + Unity practices
    • Comprehensive — All checks + semantic analysis
    • Strict — Full semantic validation (requires Roslyn)
  • Pick a level based on your projects needs. A description is shown under the dropdown.

Troubleshooting


Tips

  • Enable “Show Debug Logs” in the header for more details in the Console when diagnosing issues.