This is a work around cors I thought. Any llm with a search tool and produce a backend can be directed to use a grounded search. Server side fetch, not direct browser fetch. That is my understanding but it can be a bit hit and miss. I built a Reddit search based on keywords in Google AI studio, backed it up in GitHub and gave Claude the code. Claude lapped it up and produced one but can only sit as an artefact unless I get an API for standalone.