Nyaomaru MCP UI Server

This is a minimal MCP server (TypeScript) that exposes the Nyaomaru 3D MCP UI hosted at:

• https://nyaomaru-3-d.vercel.app/mcp-app.html

It registers a ui:// resource and a tool that triggers the UI to render in MCP-enabled clients.

Nyaomaru-3D-MCP-UI-demo.mp4

Setup

pnpm install
pnpm dev

The server runs on http://localhost:3001/mcp by default.

Expose via ngrok

ngrok http 3001

Use the generated HTTPS URL in your ChatGPT app settings as the MCP server endpoint:

https://<your-ngrok-subdomain>.ngrok-free.app/mcp

Tool + UI resource

• Tool name: open-nyaomaru-3d-ui
• UI resource URI: ui://nyaomaru-3d/mcp-app.html

If your UI loads external assets from the Vercel domain and they fail to load, add a CSP allowlist in the tool/resource _meta.ui.csp per the MCP UI spec.