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OpenAI Apps MCP

Deploy stateless MCP servers on Cloudflare Workers for ChatGPT Apps.

3|Updated Nov 14, 2025
Search Tags:#serverless#mcp#cloudflare workers#openai#widget development#chatgpt apps
One-click install
npx skills add https://github.com/evolv3ai/claude-skills-archive --skill openai-apps-mcp-evolv3ai
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: OpenAI Apps MCP
Source: https://github.com/evolv3ai/claude-skills-archive/tree/main/skills/openai-apps-mcp
Command: npx skills add https://github.com/evolv3ai/claude-skills-archive --skill openai-apps-mcp-evolv3ai

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) and references (resource) and assets (resource) components.

What problem does it solve?

This Skill streamlines the development of ChatGPT Apps by providing a robust framework for building stateless Model Context Protocol (MCP) servers on Cloudflare Workers, enabling custom tools and interactive widgets.

Core Features & Use Cases

  • MCP Server Setup: Implements the MCP protocol using Hono and the MCP SDK for seamless integration with ChatGPT.
  • Widget Integration: Serves interactive HTML/JS widgets directly within ChatGPT conversations.
  • Use Case: Develop a custom tool for ChatGPT that allows users to search for products, display results in a rich widget, and allow users to add items to a cart directly from the widget.

Quick Start

Use the openai-apps-mcp skill to scaffold a new ChatGPT app project.

Frequently Asked Questions about OpenAI Apps MCP

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I build a ChatGPT app with a custom MCP server?▼

To build ChatGPT Apps with interactive widgets, deploy a stateless Model Context Protocol (MCP) server on Cloudflare Workers using Hono and the MCP SDK to define custom tools and serve interactive HTML/JS widgets directly within ChatGPT conversations.

Can I serve interactive HTML widgets directly inside ChatGPT conversations?▼

Yes, you can serve interactive HTML/JS widgets directly within ChatGPT conversations by deploying a stateless MCP server on Cloudflare Workers, which handles data passing between the widget and the server to enable interactive user experiences.

Does Cloudflare Workers support stateless MCP servers for ChatGPT apps?▼

Yes, Cloudflare Workers supports stateless MCP servers for ChatGPT apps by implementing the MCP protocol using Hono and the MCP SDK, enabling serverless deployment of custom tools and interactive widgets without managing traditional server infrastructure.

How do I handle CORS configuration when deploying an MCP server for ChatGPT?▼

When deploying a stateless MCP server on Cloudflare Workers for ChatGPT apps, this framework addresses common development challenges including CORS configuration, widget resource handling, and data passing between the interactive HTML/JS widget and the server.

What's the best way to pass data between a ChatGPT widget and an MCP server?▼

The best way to pass data between a ChatGPT widget and an MCP server is by deploying a stateless Model Context Protocol server on Cloudflare Workers, which facilitates data passing between interactive HTML/JS widgets and the server while addressing common widget resource handling challenges.

Why do I need Hono and the MCP SDK to create custom ChatGPT tools?▼

You need Hono and the MCP SDK to create custom ChatGPT tools because they implement the Model Context Protocol required for seamless integration with ChatGPT, enabling your Cloudflare Workers server to serve interactive HTML/JS widgets and handle data passing effectively.

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