CIA, Mossad, Russia, etc., they were all tied to Epstein, and many claim one or the other was operating him. I don't think it was that simple.
I believe Epstein was more of a independent operator of an extremely high-end specialty concierge service, and he had two types of clients - those who engaged his services, and those who purchased information about those paying clients. Why get paid by one employer, when you can sell the same info to multiple parties?
I understand that they all knew what he was doing, and almost certainly were paying him a retainer, but I still believe he was mostly independent, working for whomever would pay for his information, sometimes running operations he was paid to do.
I'm just saying that he doesn't seem to have been an employee or agent of one specific nation or agency. But what do any of us really know? They have leaked out some information, but it only seems to further muddy the water in regards to his employment. They surely know exactly who he was, and what he was up to, and they are choosing to not tell us, probably because citizens would go nuts if the CIA admitted that they knew he was raping and murdering children, but covered for him.