skills.rest
Ikram-Alam
Ikram-AlamCOMMUNITY
Explore all skills by this author →
WebsiteGitHub

building-chatgpt-apps

Build ChatGPT Apps with interactive widgets and FastMCP servers.

Updated Feb 5, 2026
Search Tags:#MCP#OpenAI Apps SDK#widgets#FastMCP#ChatGPT Apps#widget metadata#Developer Mode
One-click install
npx skills add https://github.com/Ikram-Alam/The-Evolution-of-Todo-Mastering-Spec-Driven-Development-Cloud-Native-AI --skill building-chatgpt-apps-ikram-alam
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: building-chatgpt-apps
Source: https://github.com/Ikram-Alam/The-Evolution-of-Todo-Mastering-Spec-Driven-Development-Cloud-Native-AI/tree/main/.claude/skills/building-chatgpt-apps
Command: npx skills add https://github.com/Ikram-Alam/The-Evolution-of-Todo-Mastering-Spec-Driven-Development-Cloud-Native-AI --skill building-chatgpt-apps-ikram-alam

SYSTEM DOCUMENTATION & REQUIREMENTS

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

What problem does it solve?

Guides developers to build ChatGPT Apps with interactive widgets and MCP servers. It covers widget architecture, MCP server setup with FastMCP, response metadata, and Developer Mode configuration, including how to register apps and expose MCP endpoints.

Core Features & Use Cases

  • Widget architecture and embedded HTML widgets that render within ChatGPT conversations.
  • MCP server setup with FastMCP to provide tools and resources, plus meta payloads for widgets.
  • Developer Mode integration and app registration workflow to test and deploy apps.
  • Use Case: Build a ChatGPT app that combines a widget UI with tool calls and metadata to create interactive experiences.

Quick Start

Create and run an MCP server, define a widget HTML, expose it through a widget resource, run ngrok, and register the app in ChatGPT Developer Mode to test.

Frequently Asked Questions about building-chatgpt-apps

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

FAQPage Schema
How do I build ChatGPT Apps with interactive widgets?▼

To build ChatGPT Apps with interactive widgets, you create a FastMCP server, define widget HTML resources using the text/html+skybridge MIME type, and register the app via Developer Mode to render rich in-conversation UIs.

What is the text/html+skybridge MIME type used for in widget development?▼

The text/html+skybridge MIME type is used for widget HTML resources to render embedded interactive interfaces directly within ChatGPT conversations. It enforces the correct response metadata structure for widget-based workflows.

How do I set up an MCP server with FastMCP for ChatGPT Apps?▼

You set up an MCP server with FastMCP by defining tool definitions and meta payloads for widgets, exposing widget resources, running ngrok to create a public endpoint, and registering the server in ChatGPT Developer Mode.

Can I test MCP-backed tools in ChatGPT Developer Mode?▼

Yes, you can test MCP-backed tools in ChatGPT Developer Mode by running your FastMCP server, establishing an ngrok tunnel for the endpoint, and completing the app registration workflow to deploy and test interactive experiences.

What is the response metadata structure required for ChatGPT App widgets?▼

The response metadata structure required for ChatGPT App widgets enforces specific widget HTML resources alongside FastMCP-based tool definitions, ensuring that interactive UI elements and tool calls combine correctly within conversations.

Do I need ngrok to deploy ChatGPT Apps with MCP servers?▼

Yes, you need ngrok to expose your local FastMCP server endpoint publicly, which is a required step during the Developer Mode app registration workflow to test and deploy MCP-backed tools and widget interfaces.

Related Skills

Explore More Software Engineering Skills→
CrawlScriptCrawlScript
147

ngrok

Exposes a local network port to the internet using ngrok's public URL generation service.

Official
Intermediate
hafiznaveedchuhan-ctrlhafiznaveedchuhan-ctrl

building-chatgpt-apps

Build interactive ChatGPT Apps with MCP servers and embedded widgets.

Community
Advanced
Ikram-AlamIkram-Alam

building-chatgpt-apps

Build ChatGPT Apps with interactive widgets and FastMCP servers.

Community
Advanced
Razaib-khanRazaib-khan

building-chatgpt-apps

Build ChatGPT Apps with interactive HTML widgets and FastMCP tool registration.

Community
Advanced