Helix MCP Demo

What it does

Helix MCP Demo is a collection of MCP application examples and developer utilities from IST Research. It demonstrates how to build MCP servers that deliver interactive user interfaces to AI hosts using the official MCP Apps specification (@modelcontextprotocol/ext-apps). The repo serves as a practical reference for teams adopting the MCP Apps standard in their own projects.

Key features

• Working examples — Ready-to-run MCP App demos showcasing real-world UI patterns built on the MCP Apps standard
• Utilities — Helper scripts and tooling to streamline MCP application development
• MCP Apps integration — Built on @modelcontextprotocol/ext-apps v1.5.0, the official SDK for interactive MCP UIs
• Active development — Repository is actively maintained with recent commits

Installation

Clone and run locally:

git clone https://github.com/istresearch/helix-mcp-demo
cd helix-mcp-demo
npm install

Claude Desktop — add individual demo servers from the repo:

{
  "mcpServers": {
    "helix-demo": {
      "command": "node",
      "args": ["path/to/helix-mcp-demo/server.js"]
    }
  }
}

Supported hosts

Built on the MCP Apps standard — compatible with any host that implements the MCP Apps specification, including Claude and VS Code Copilot.