Hi, @AlineGuerreiro The short answer is this is under development, but not available at this time. This page — Analytics API, has an index of the available Analytics endpoints, and this page –Analytics API overview, has more details on what is possible with the currently available tools. I understand this is not the answer you are after. Having more of the reporting and analytics functionality available in endpoints will be a great addition to our tools.
I suggest subscribing to the HubSpot Developer Changelog to stay up to date on new releases, updates, and important changes.
I’m facing the same issue as the Original Poster and am looking for the API endpoint to access Ad Interactions by Contact. Has there been any update or progress on this?