Built on MCP as foundation. Ability to use Developer mode. Docs: https://developers.openai.com/apps-sdk https://developers.openai.com/apps-sdk availability: a

Built on MCP as foundation. Ability to use Developer mode. Docs: https://developers.openai.com/apps-sdk https://developers.openai.com/apps-sdk availability: all logged-in ChatGPT users outside of the EU* on Free, Go, Plus and Pro plans. launch: Booking.com, Canva, Coursera, Figma, Expedia, Spotify and Zillow + English only. soon: EU apps; app submission reviews + monetization