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MCP verified MIT Self-run

Conduit

mcp-apkd-conduit · by apkd

A Unity Engine MCP server.

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Install

$ agentstack add mcp-apkd-conduit

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Reliability & compatibility

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Declared compatibility

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Compatibility is declared by the source manifest. End-to-end runtime verification is coming, see below.

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About

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                                 A simple and fast MCP server for Unity.

[](https://github.com/apkd/Conduit/releases/tag/latest) [](https://github.com/apkd/Conduit/blob/master/LICENSE) [](https://github.com/apkd/Conduit/actions/workflows/build-test-release.yml) [](https://github.com/apkd/Conduit/commits/master) [](https://github.com/apkd/Conduit/commit/HEAD~1)

A Unity MCP server that stays out of the way of your coding agent.

  • Robust: survives crashes, restarts, assembly reloads, and handles multiple agents and Unity instances.
  • Context-efficient: conserves the agent's context window and saves tokens. Small number of versatile tools.
  • Simple setup: one Unity package, one server exe, editor config wizard. No dependencies, no pollution.

> [!CAUTION] > This package is WIP: > - No linux support > - Docs are incomplete

> [!WARNING] > Granting an AI agent access to Unity indirectly gives them escalated access to your machine. > Have a resilient backup strategy, and make sure your work machine is resilient to data loss.

Installation

Add the package to your project by Git URL:

https://github.com/apkd/Conduit.git?path=/Conduit.Unity#release

You can also declare it directly in Packages/manifest.json:

"dependencies": {
  "dev.tryfinally.conduit": "https://github.com/apkd/Conduit.git?path=/Conduit.Unity#release",

Automatic setup

> [!TIP] > The Unity package includes a wizard for setting up the MCP server. > This downloads the server executable and configures your installed code editors.

Tools → Conduit → Setup MCP Server

> [!CAUTION] > (automatic setup and tutorial/docs coming soon)

Manual setup

Build and editor configuration instructions

You can either:

  • Download the server executable from the releases page, or...
  • Build it by running dotnet publish,

Now configure your editor:

Codex

For a basic stdio setup, add this to config.toml:

stdio | Windows (Native)
[mcp_servers.unity]
command = "C:\\src\\Conduit\\Conduit.Server\\publish\\win-x64\\conduit.exe"
cwd = "C:\\src\\Conduit"
disabled_tools = []
tool_timeout_sec = 1800
enabled = true
stdio | Windows (WSL)
[mcp_servers.unity]
command = "/mnt/c/src/Conduit/Conduit.Server/publish/win-x64/conduit.exe"
cwd = "/mnt/c/src/Conduit"
disabled_tools = []
tool_timeout_sec = 1800
enabled = true
stdio | Linux
[mcp_servers.unity]
command = "/home/you/src/Conduit/Conduit.Server/publish/linux-x64/conduit"
cwd = "/home/you/src/Conduit"
disabled_tools = []
tool_timeout_sec = 1800
enabled = true
http
conduit --http [--port 5080] [--url http://127.0.0.1:5080]
codex mcp add unity --url http://127.0.0.1:5080
Approve tool calls

To avoid going insane from having to approve every tool call separately:

[mcp_servers.unity]
tools.discard_scenes.approval_mode = "approve"
tools.execute_code.approval_mode = "approve"
tools.find_missing_scripts.approval_mode = "approve"
tools.find_references_to.approval_mode = "approve"
tools.from_json_overwrite.approval_mode = "approve"
tools.get_dependencies.approval_mode = "approve"
tools.help.approval_mode = "approve"
tools.playmode.approval_mode = "approve"
tools.editmode.approval_mode = "approve"
tools.profiler_browse.approval_mode = "approve"
tools.profiler_overview.approval_mode = "approve"
tools.profiler_record.approval_mode = "approve"
tools.refresh_asset_database.approval_mode = "approve"
tools.reimport_assets.approval_mode = "approve"
tools.reflect.approval_mode = "approve"
tools.restart.approval_mode = "approve"
tools.run_tests_editmode.approval_mode = "approve"
tools.run_tests_player.approval_mode = "approve"
tools.run_tests_playmode.approval_mode = "approve"
tools.save_scenes.approval_mode = "approve"
tools.screenshot.approval_mode = "approve"
tools.search.approval_mode = "approve"
tools.show.approval_mode = "approve"
tools.status.approval_mode = "approve"
tools.to_json.approval_mode = "approve"
tools.view_burst_asm.approval_mode = "approve"

Claude Code

Claude Code adds MCP servers with claude mcp add.

stdio | Windows (Native)
claude mcp add --transport stdio unity -- C:\src\Conduit\Conduit.Server\publish\win-x64\conduit.exe
stdio | Windows (WSL)
claude mcp add --transport stdio unity -- /mnt/c/src/Conduit/Conduit.Server/publish/win-x64/conduit.exe
stdio | Linux
claude mcp add --transport stdio unity -- /home/you/src/Conduit/Conduit.Server/publish/linux-x64/conduit
http
conduit --http [--port 5080] [--url http://127.0.0.1:5080]
claude mcp add --transport http unity http://127.0.0.1:5080

Cursor

Cursor uses mcp.json with a top-level mcpServers object. You can put it in ~/.cursor/mcp.json for a global setup or .cursor/mcp.json for a project-local setup.

stdio | Windows (Native)
{
  "mcpServers": {
    "unity": {
      "command": "C:\\src\\Conduit\\Conduit.Server\\publish\\win-x64\\conduit.exe"
    }
  }
}
stdio | Windows (WSL)
{
  "mcpServers": {
    "unity": {
      "command": "/mnt/c/src/Conduit/Conduit.Server/publish/win-x64/conduit.exe"
    }
  }
}
stdio | Linux
{
  "mcpServers": {
    "unity": {
      "command": "/home/you/src/Conduit/Conduit.Server/publish/linux-x64/conduit"
    }
  }
}
http
conduit --http [--port 5080] [--url http://127.0.0.1:5080]
{
  "mcpServers": {
    "unity": {
      "url": "http://127.0.0.1:5080"
    }
  }
}

Windsurf

Windsurf stores MCP servers in ~/.codeium/windsurf/mcp_config.json.

stdio | Windows (Native)
{
  "mcpServers": {
    "unity": {
      "command": "C:\\src\\Conduit\\Conduit.Server\\publish\\win-x64\\conduit.exe",
      "args": []
    }
  }
}
stdio | Windows (WSL)
{
  "mcpServers": {
    "unity": {
      "command": "/mnt/c/src/Conduit/Conduit.Server/publish/win-x64/conduit.exe",
      "args": []
    }
  }
}
stdio | Linux
{
  "mcpServers": {
    "unity": {
      "command": "/home/you/src/Conduit/Conduit.Server/publish/linux-x64/conduit",
      "args": []
    }
  }
}
http
conduit --http [--port 5080] [--url http://127.0.0.1:5080]
{
  "mcpServers": {
    "unity": {
      "serverUrl": "http://127.0.0.1:5080"
    }
  }
}

Cline

Cline stores MCP settings in cline_mcp_settings.json.

stdio | Windows (Native)
{
  "mcpServers": {
    "unity": {
      "command": "C:\\src\\Conduit\\Conduit.Server\\publish\\win-x64\\conduit.exe",
      "args": [],
      "disabled": false
    }
  }
}
stdio | Windows (WSL)
{
  "mcpServers": {
    "unity": {
      "command": "/mnt/c/src/Conduit/Conduit.Server/publish/win-x64/conduit.exe",
      "args": [],
      "disabled": false
    }
  }
}
stdio | Linux
{
  "mcpServers": {
    "unity": {
      "command": "/home/you/src/Conduit/Conduit.Server/publish/linux-x64/conduit",
      "args": [],
      "disabled": false
    }
  }
}
http
conduit --http [--port 5080] [--url http://127.0.0.1:5080]
{
  "mcpServers": {
    "unity": {
      "url": "http://127.0.0.1:5080",
      "type": "streamableHttp",
      "disabled": false
    }
  }
}

Continue

Continue uses YAML, typically as standalone files under .continue/mcpServers/

Create .continue/mcpServers/unity.yaml:

stdio | Windows (Native)
name: Unity MCP
version: 0.0.1
schema: v1
mcpServers:
  - name: unity
    type: stdio
    command: C:\src\Conduit\Conduit.Server\publish\win-x64\conduit.exe
    cwd: C:\src\Conduit
stdio | Windows (WSL)
name: Unity MCP
version: 0.0.1
schema: v1
mcpServers:
  - name: unity
    type: stdio
    command: /mnt/c/src/Conduit/Conduit.Server/publish/win-x64/conduit.exe
    cwd: /mnt/c/src/Conduit
stdio | Linux
name: Unity MCP
version: 0.0.1
schema: v1
mcpServers:
  - name: unity
    type: stdio
    command: /home/you/src/Conduit/Conduit.Server/publish/linux-x64/conduit
    cwd: /home/you/src/Conduit
http
conduit --http [--port 5080] [--url http://127.0.0.1:5080]
name: Unity MCP
version: 0.0.1
schema: v1
mcpServers:
  - name: unity
    type: streamable-http
    url: http://127.0.0.1:5080

Gemini CLI

Gemini CLI stores MCP configuration in ~/.gemini/settings.json for user scope or .gemini/settings.json for project scope.

stdio | Windows (Native)
{
  "mcpServers": {
    "unity": {
      "command": "C:\\src\\Conduit\\Conduit.Server\\publish\\win-x64\\conduit.exe",
      "cwd": "C:\\src\\Conduit"
    }
  }
}
stdio | Windows (WSL)
{
  "mcpServers": {
    "unity": {
      "command": "/mnt/c/src/Conduit/Conduit.Server/publish/win-x64/conduit.exe",
      "cwd": "/mnt/c/src/Conduit"
    }
  }
}
stdio | Linux
{
  "mcpServers": {
    "unity": {
      "command": "/home/you/src/Conduit/Conduit.Server/publish/linux-x64/conduit",
      "cwd": "/home/you/src/Conduit"
    }
  }
}
http
conduit --http [--port 5080] [--url http://127.0.0.1:5080]
{
  "mcpServers": {
    "unity": {
      "httpUrl": "http://127.0.0.1:5080"
    }
  }
}

Equivalent CLI commands:

Local stdio
gemini mcp add unity /home/you/src/Conduit/Conduit.Server/publish/linux-x64/conduit
HTTP
gemini mcp add --transport http unity http://127.0.0.1:5080

GitHub Copilot CLI

GitHub Copilot CLI stores MCP servers in ~/.copilot/mcp-config.json.

stdio | Windows (Native)
{
  "mcpServers": {
    "unity": {
      "type": "local",
      "command": "C:\\src\\Conduit\\Conduit.Server\\publish\\win-x64\\conduit.exe",
      "args": [],
      "env": {},
      "tools": ["*"]
    }
  }
}
stdio | Windows (WSL)
{
  "mcpServers": {
    "unity": {
      "type": "local",
      "command": "/mnt/c/src/Conduit/Conduit.Server/publish/win-x64/conduit.exe",
      "args": [],
      "env": {},
      "tools": ["*"]
    }
  }
}
stdio | Linux
{
  "mcpServers": {
    "unity": {
      "type": "local",
      "command": "/home/you/src/Conduit/Conduit.Server/publish/linux-x64/conduit",
      "args": [],
      "env": {},
      "tools": ["*"]
    }
  }
}
http
conduit --http [--port 5080] [--url http://127.0.0.1:5080]
{
  "mcpServers": {
    "unity": {
      "type": "http",
      "url": "http://127.0.0.1:5080",
      "headers": {},
      "tools": ["*"]
    }
  }
}

Interactive alternative:

/mcp add

VS Code / GitHub Copilot Chat

VS Code uses mcp.json with a top-level servers object. For workspace scope, put it in .vscode/mcp.json; for user scope, open the user MCP configuration from the Command Palette.

stdio | Windows (Native)
{
  "servers": {
    "unity": {
      "type": "stdio",
      "command": "C:\\src\\Conduit\\Conduit.Server\\publish\\win-x64\\conduit.exe",
      "args": []
    }
  }
}
stdio | Windows (WSL)
{
  "servers": {
    "unity": {
      "type": "stdio",
      "command": "/mnt/c/src/Conduit/Conduit.Server/publish/win-x64/conduit.exe",
      "args": []
    }
  }
}
stdio | Linux
{
  "servers": {
    "unity": {
      "type": "stdio",
      "command": "/home/you/src/Conduit/Conduit.Server/publish/linux-x64/conduit",
      "args": []
    }
  }
}
http
conduit --http [--port 5080] [--url http://127.0.0.1:5080]
{
  "servers": {
    "unity": {
      "type": "http",
      "url": "http://127.0.0.1:5080"
    }
  }
}

Antigravity

You can get to the config file from Manage MCP Servers → View raw config.

stdio | Windows (Native)
{
  "mcpServers": {
    "unity": {
      "command": "C:\\src\\Conduit\\Conduit.Server\\publish\\win-x64\\conduit.exe",
      "args": [],
      "cwd": "C:\\src\\Conduit"
    }
  }
}
stdio | Windows (WSL)
{
  "mcpServers": {
    "unity": {
      "command": "/mnt/c/src/Conduit/Conduit.Server/publish/win-x64/conduit.exe",
      "args": [],
      "cwd": "/mnt/c/src/Conduit"
    }
  }
}
stdio | Linux
{
  "mcpServers": {
    "unity": {
      "command": "/home/you/src/Conduit/Conduit.Server/publish/linux-x64/conduit",
      "args": [],
      "cwd": "/home/you/src/Conduit"
    }
  }
}

Zed

Zed uses context_servers in its settings. For project scope, put this in .zed/settings.json; for user scope, add it to your user settings.

stdio | Windows (Native)
{
  "context_servers": {
    "unity": {
      "command": "C:\\src\\Conduit\\Conduit.Server\\publish\\win-x64\\conduit.exe",
      "args": []
    }
  }
}
stdio | Windows (WSL)
{
  "context_servers": {
    "unity": {
      "command": "/mnt/c/src/Conduit/Conduit.Server/publish/win-x64/conduit.exe",
      "args": []
    }
  }
}
stdio | Linux
{
  "context_servers": {
    "unity": {
      "command": "/home/you/src/Conduit/Conduit.Server/publish/linux-x64/conduit",
      "args": []
    }
  }
}
http
conduit --http [--port 5080] [--url http://127.0.0.1:5080]
{
  "context_servers": {
    "unity": {
      "url": "http://127.0.0.1:5080"
    }
  }
}

Roo Code

Roo Code stores global MCP configuration in mcp_settings.json. For project-local setup, create .roo/mcp.json.

stdio | Windows (Native)
{
  "mcpServers": {
    "unity": {
      "command": "C:\\src\\Conduit\\Conduit.Server\\publish\\win-x64\\conduit.exe",
      "args": [],
      "cwd": "C:\\src\\Conduit",
      "disabled": false
    }
  }
}
stdio | Windows (WSL)
{
  "mcpServers": {
    "unity": {
      "command": "/mnt/c/src/Conduit/Conduit.Server/publish/win-x64/conduit.exe",
      "args": [],
      "cwd": "/mnt/c/src/Conduit",
      "disabled": false
    }
  }
}
stdio | Linux
{
  "mcpServers": {
    "unity": {
      "command": "/home/you/src/Conduit/Conduit.Server/publish/linux-x64/conduit",
      "args": [],
      "cwd": "/home/you/src/Conduit",
      "disabled": false
    }
  }
}
http
conduit --http [--port 5080] [--url http://127.0.0.1:5080]
{
  "mcpServers": {
    "unity": {
      "type": "streamable-http",
      "url": "http://127.0.0.1:5080",
      "disabled": false
    }
  }
}

JetBrains IDEs / Junie

Junie in JetBrains IDEs and Junie CLI use the same MCP config file format. Use ~/.junie/mcp/mcp.json for user scope or .junie/mcp/mcp.json in the project root for project scope.

stdio | Windows (Native)
{
  "mcpServers": {
    "unity": {
      "command": "C:\\src\\Conduit\\Conduit.Server\\publish\\win-x64\\conduit.exe",
      "args": []
    }
  }
}
stdio | Windows (WSL)
{
  "mcpServers": {
    "unity": {
      "command": "/mnt/c/src/Conduit/Conduit.Server/publish/win-x64/conduit.exe",
      "args": []
    }
  }
}
stdio | Linux
{
  "mcpServers": {
    "unity": {
      "command": "/home/you/src/Co

…

## Source & license

This open-source MCP server is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [apkd](https://github.com/apkd)
- **Source:** [apkd/Conduit](https://github.com/apkd/Conduit)
- **License:** MIT

Install and usage instructions live in the source repository linked above.

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Versions

  • v0.1.0 Imported from the upstream source.

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