Very cool. The “sending everything of relevance on the page to OpenAI” is of course creepy. But that’s table stakes for anything like this until people can run them externally.
This would make a cool, “magic box”, at the top of a web page. Type in what you want to do, it sends it to the server along with the DOM extract (same site server). Server asks magical LLM how to do it, and then spits it back to the client. So no plug-in needed and data flow would pass through the source server.