Last time I looked into this (about a month ago), there's a lot of restrictions on the use of Gemini's search grounding results. There's not even an easy or approved way to de-mangle their returned URL's to get to the real URL of the search results. Has that changed recently?

I haven't used it but they were silly about their programmatic search api in the same way. Can't use the results for anything other than showing them as-is on a results page.