Building ChatGPT Apps with MCP and the OpenAI Apps SDK: A Practical Guide to Designing, Building, and Shipping Interactive ChatGPT Apps with the Model Context Protocol and the OpenAI Apps SDK Kindle Edition

The conversational interface is the future of software.Users no longer want to switch between apps—they want to stay in the conversation and let AI handle the rest. With the Model Context Protocol and OpenAI’s Apps SDK, developers can build applications that live directly inside ChatGPT.This practical, hands-on guide takes you from concept to published app. Using a real-world profile discovery feature as the running project, you’ll build a complete ChatGPT application—including an MCP server, React widgets, OAuth authentication, and everything required for App Store submission.What You’ll Learn:Part I: Foundations — Understand the shift from traditional UIs to conversational interfaces and how ChatGPT’s architecture enables app-like experiences.Part II: The MCP Server — Build a production-ready MCP server with TypeScript. Implement tools with proper annotations, define JSON schemas, and connect to real data sources.Part III: ChatGPT Widgets — Create React components that render inside ChatGPT. Master the window.openai SDK, manage state across conversation turns, and design responsive widget layouts.Part IV: End-to-End Integration — Connect servers and widgets using OAuth 2.1, deploy to production, and ensure reliable, secure data flow.Part V: App Approval & Best Practices — Learn what separates approved apps from rejected ones: UX decision matrices, tool naming conventions, state management patterns, privacy requirements, a 15-prompt testing library, and a widget debugging playbook.This Book Includes:• Complete TypeScript and React code examples• Reference tables and architecture diagrams• Anti-pattern warnings to avoid common mistakes• A pre-submission checklist for App Store approvalWho This Book Is For:Developers who want to build real, production-ready ChatGPT apps. This book assumes basic familiarity with web development and is focused on practical implementation—not theory. Read more