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nanora-unity-mcp

Connect any MCP client

nanora-unity-mcp listens on two transports on the same port. Register whichever your client supports:

Transport URL
Streamable HTTP http://127.0.0.1:<PORT>/mcp
SSE http://127.0.0.1:<PORT>/sse

The server negotiates MCP protocol versions 2024-11-05 to 2025-11-25. The port (51726–51825) comes from the project path and is shown in Window > Unity MCP Server; see Several projects at once.

For scripts, POST /message takes a JSON-RPC request and returns the answer directly. All endpoints are listed in Endpoints.

Check the transport

Section titled “Check the transport”
Terminal window
node scripts/mcp/verify-transport.mjs

It checks the handshake, notifications, errors, the Origin check, SSE session isolation and a tool call (Node.js 20 or later, only for this check).