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Little America MCP App
Supports UIby boxed-dev
A Next.js starter for building OpenAI Apps SDK compatible MCP servers with native widget rendering in ChatGPT.
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Works in:ChatGPT
Exposes:ToolsResources
What it does
This is a reference implementation and starter kit for building interactive MCP apps that render natively within the ChatGPT interface. It demonstrates how to combine a Next.js backend with the OpenAI Apps SDK to create tools that trigger rich UI widgets (iframes) instead of just text responses.
Key features
- Widget Rendering: Uses
templateUrito serve HTML content as native ChatGPT widgets. - Surgical SDK Integration: Includes the
NextChatSDKBootstrapto patch browser APIs for seamless iframe operation. - CORS-Ready: Built-in middleware to handle preflight requests for React Server Components (RSC).
- Vercel Optimized: Pre-configured for one-click deployment with automated asset prefixing.
Installation
- Clone the repository and run
npm install. - Deploy to Vercel.
- In ChatGPT, go to Settings → Connectors → Create and enter your deployed URL with the
/mcppath (e.g.,https://your-app.vercel.app/mcp).
Supported hosts
Confirmed for ChatGPT.
Quick install
npm installInformation
- Pricing
- free
- Published
- 4/18/2026
- stars
