ChatGPT MCP and Apps: extensions you can try

A look at a free open-source prompt library with over 167,000 GitHub stars, offering ready-made prompts for ChatGPT, Claude and Gemini and usable as a CLI, MCP server or Claude Code plugin.

A Spanish-language post promotes prompts.chat, a free open-source prompt library with 173K GitHub stars that works with ChatGPT, Claude and Gemini via CLI, MCP server or Claude Code plugin, with public-domain prompts and self-hosting.

An English post highlights prompts.chat, a 173K-star open-source prompt library for ChatGPT, Claude and Gemini, usable via CLI, MCP server or Claude Code plugin, with CSV export and self-hosting options.

A public-domain prompt library accessible via CLI, MCP server, Claude Code plugin or CSV export, with a self-hostable private version.

Open-source prompt library prompts.chat ships a CLI, an MCP server and a Claude Code plugin, with all prompts in the public domain and a self-hostable private version.

The 170K-star community prompt library now offers a CLI, an MCP server and a Claude Code plugin, and can be self-hosted with custom branding and authentication.

prompts.chat, billed as the world's largest open-source prompt library, works as a CLI, MCP server or Claude Code plugin, and can be self-hosted as a private version with custom branding and authentication.

The open-source project formerly called Awesome ChatGPT Prompts offers a CLI, an MCP server and a Claude Code plugin, and can be self-hosted as a private version.

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.

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.

The author shares the full prompt that has ChatGPT build a double_number tool with a Japanese UI and Plugin extensions entry points, then deploy it to Sites.

The author found that Codex's computer use is a local MCP server inside the ChatGPT Mac app, and shares a prompt for registering it with Claude Code for browser testing.