Origin by Genisent

What it does

Origin by Genisent is an MCP App demo for genealogy and archive search automation. It renders an interactive React widget directly inside AI chat interfaces, presenting mock FamilySearch authentication and email approval flows. The widget follows the host's theme (light/dark), supports fullscreen mode, and is deployable to Vercel or run locally — making it a reference implementation for archive-search AI integrations.

Key features

• Mock FamilySearch login UI — demonstrates how to surface a login/auth step inside an AI chat widget without iframe CSP issues
• Email approval workflow — shows how to embed multi-step confirmation flows within MCP App UI
• Theme-aware widget — follows window.openai.theme and host data-theme/class="dark" for seamless host integration
• Vercel-deployable — ships with a Vercel serverless function (api/mcp.ts) using Streamable HTTP / JSON-RPC; GET /mcp returns smoke test payload
• Optional API key auth — set API_KEY env var to require Bearer token on POST /mcp; omit for open access

Installation

Local dev

pnpm install
pnpm build
pnpm serve:mcp-app

MCP server listens on http://localhost:3001/mcp.

Claude Desktop

{
  "mcpServers": {
    "origin-demo": {
      "command": "pnpm",
      "args": ["serve:mcp-app"],
      "cwd": "/path/to/origin-demo"
    }
  }
}

ChatGPT Connectors

Deploy to Vercel and add the deployed URL as an MCP server in ChatGPT Connectors. GET /mcp serves the smoke payload; POST /mcp handles JSON-RPC.

Supported hosts

ChatGPT (Connectors, Streamable HTTP) is the primary confirmed host; also compatible with any MCP client supporting HTTP transport.