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Prerequisite: Ensure you have Coplay properly installed in your Unity project before proceeding.If you haven’t installed Coplay yet, please follow our Installation Guide first.You’ll need Python 3.11 or higher, and uv installed.

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What is Coplay MCP

Coplay MCP is an interface that lets you control Coplay inside Unity from your favorite MCP client such as Cline or Claude Code. As an example, here’s a video in which we use Coplay’s MCP to edit multiple Unity projects simultaneously.

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Setting up Coplay MCP

Once you have Coplay installed and authenticated, you’re ready to connect the Coplay MCP. Installing Coplay MCP for Claude Code: claude mcp add --scope user --transport stdio coplay-mcp --env MCP_TOOL_TIMEOUT=720000 -- uvx --python ">=3.11" coplay-mcp-server@latest Or add this config to your favorite MCP Host (e.g. Cursor or Cline): 
{
  "mcpServers": {
    "coplay-mcp": {
      "autoApprove": [],
      "disabled": false,
      "timeout": 720,
      "type": "stdio",
      "command": "uvx",
      "args": [
        "--python",
        ">=3.11",
        "coplay-mcp-server@latest"
      ]
    }
  }
}
To test that your Coplay MCP works, prompt your MCP client (e.g., Cursor or ChatGPT) with something like: List all of the open unity editors using Coplay MCP. If this yields the actual list of open editors, you’re good to go. Note: We set the timeout to 720s (12 minutes) because using the coplay_task tool can run for quite a while in Unity depending on the task. If you don’t plan to use the coplay_task tool, you can set the timeout to a more reasonable value such as 60s. Need more help? Join our Discord community for support from the Coplay team and other users.