I could not find a V2 API method that would allow some kind of full text search. Filter Tickets does not seem appropriate (at least I don’t understand how to use it for such searches).
How can I do full text searches (subject, body, …) using the API?
Thanks for being patient! Unfortunately, full-text search via Freshdesk API is not possible at the moment. As you rightly pointed out, Freshdesk internally uses those endpoints, however, they are not public yet (not included in V2). Filter ticket endpoints would be the closest solution at this point. I am moving this to the feedback category for wider attention.