ChatGPT MCP and Apps: extensions you can try

The free GitHub repo prompts.chat hosts a large library of ready-to-use prompts for ChatGPT, Claude, and Gemini, with CLI, MCP, and Claude Code support.

OpenAI's MCP extensions repository is the official entry point for connecting third-party plugins to ChatGPT, a starting place for anyone building their own tool integrations.

The author built an app they use every day that provides OAuth MCP servers for ChatGPT and Claude so memory can be synced at any time.

The author turned their university Canvas courses into a read-only MCP connector so ChatGPT can read announcements, readings and assignments and build study material from them.

The author packaged their personal-app build process into a reusable skill and used it to create Cycling Garage with ChatGPT Sites hosting, persistent storage and MCP tools, verifying a saved inspection record through an embedded card.

A developer wired ChatGPT Sites into a plugin as an MCP endpoint for previews, but it keeps saying it needs to log in as the user, and the promised login prompt never appears.

The author open-sourced angular-mcp-bridge, imagining a future where stores can be browsed and checked out directly inside ChatGPT or Claude chats, with a demo video.

A Solana ETF intelligence site built with ChatGPT Sites, Plugin Extensions and MCP lets users check US Solana ETF flows, SOL price and DEX volume inside ChatGPT, with a demo link.

A Japanese user connected their own system to ChatGPT via mcp-extensions and says it can even understand questions about their home setup, calling it very good.

OpenAI has open-sourced the mcp-extensions repository for building plugins that feel like native ChatGPT features, with a GitHub link.

OpenAI's MCP Extensions does not replace MCP connections; it lets connected plugins work like native ChatGPT features and embed custom interfaces inside the chat.

Formerly Awesome ChatGPT Prompts, Prompts Chat works with ChatGPT, Claude and Gemini and offers a CLI, MCP server and Claude Code plugin, plus self-hosting.