unity-mcp/UnityMcpBridge
dsarno ff736012fa
Fix read_console includeStacktrace parameter behavior (#304)
The includeStacktrace parameter was working backwards - when false,
it would return the full message with embedded stack traces, and when
true, it would extract the stack trace but the logic was inverted.

Changes:
- Always extract the first line as the message text
- Only populate stackTrace field when includeStacktrace is true
- Ensures clean, summary-only messages when includeStacktrace is false
- Properly separates stack traces into their own field when requested

This matches the expected Unity console behavior where the summary
is shown by default, and stack traces are only shown when expanded.
2025-10-03 17:08:39 -07:00
..
Editor Fix read_console includeStacktrace parameter behavior (#304) 2025-10-03 17:08:39 -07:00
Runtime Autoformat (#297) 2025-09-30 16:25:33 -04:00
UnityMcpServer~/src Make it easier to add tools (#301) 2025-10-03 18:53:09 -04:00
Editor.meta restructured project 2025-04-08 06:14:13 -04:00
README.md Make it easier to add tools (#301) 2025-10-03 18:53:09 -04:00
README.md.meta Don't ignore the package's README (#230) 2025-08-20 18:26:51 -04:00
Runtime.meta Fix: Add missing Runtime assembly and related files 2025-04-10 10:07:20 -07:00
package.json feat: Unity Asset Store compliance with post-installation dependency setup (#281) 2025-10-03 16:43:40 -04:00
package.json.meta update gitignore 2025-04-08 07:44:46 -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.