ChatGPT Adds WebMCP Support for Site Tools

OpenAI Developers retweeted Wes Bos stating WebMCP landed in ChatGPT today, letting websites expose tools that agents can use directly. Ilya Grigorik replied that the built-in browser now speaks WebMCP, with millions of Shopify storefronts ready for agents to explore catalogs and build carts. He also noted support for an OpenAI WebMCP challenge. The posts present these features as newly available without further confirmation details.