Agent Plugins. A standard for (most) of your agents out there, including Codex and ChatGPT.

OpenAI Developers (@OpenAIDevs)
Build a plugin once and use it across compatible agent clients.

Introducing Agent Plugins, an open standard developed with @awsdevelopers, @cursor_ai, @github, @code, and @vercel that packages Agent Skills and supports MCP server configurations in a shared format. Video