ChatGPT MCP and Apps: extensions you can try

The memory plugin lets users search memories and their profile summary in chat, renders the memory graph inline, and saves, forgets or uploads memories without leaving the conversation.

A Japanese developer built a self-hosted MCP server with ChatGPT Sites as the bridge server, linking LINE to ChatGPT after some trial and error.

Less than 24 hours after Dev Day, OpenAI added MCP hosting inside ChatGPT Sites, letting MCP servers become plugins usable across ChatGPT.

A task tracker built in ChatGPT Sites can host its MCP server, be tested and published, then connected as a plugin, though rollout is gradual and Personal/Pro users can't yet share plugins by link or invite.

OpenAI has open-sourced mcp-extensions, a plugin framework that lets plugins become native ChatGPT features, with the repository linked.

A single prompt lets Sites generate an MCP server, deploy it, turn it into a plugin, and install it across web, mobile, and desktop.

Cinema 4D 2026.4 includes an official MCP server that lets Claude Desktop and ChatGPT Desktop rename scenes and configure multipass, off by default and available only in the full version.

A short video shows connecting the Atlabs AI MCP endpoint to ChatGPT for creative tasks.

A demo shows the Atlassian extension in ChatGPT for viewing work items and pages, and @-mentioning Jira or Confluence content as context right from the composer.

With the EventCatalog MCP extension connected, ChatGPT can render node graphs, flows and step-by-step architecture diagrams from a task or codebase.

The author describes a single prompt that produced an editable email and SMS automation draft in an Omnisend account; the Omnisend MCP is listed in Claude and ChatGPT.

Two setups are suggested: ChatGPT on the web with Anki's MCP (paid), or desktop work mode with a local stdio connector, to create cards quickly in bulk.