Israel Ceasefire/Hostage-Exchange: Whose Responsibility? Good/Bad?

On the face of it, I guess good. 

Criticism: Israel basically gives up. Some but not all hostages supposed to be released. 500 Hamas terrorists released in exchange. Hamas survives.

So far as American Presidents go: who's responsible?

Biden says he is, but I can't believe anyone outside the blue-team echo chamber believes that. Trump threatened Hamas, and now a day before he's inaugurated, suddenly they're up for a prisoner exchange.

But, if the deal is bad--see above--then it's still on Trump.

Of course Biden IS frantically scrambling to create the impression of a (non-terrible) legacy. So I guess this might be mostly or significantly on him. 

It's probably dumb to put too much weight on our guesses from outside.

But my guess is: mostly on Trump (Well, mostly on the Israelis...but I mean so far as USA influence goes). Not a great deal, but maybe ok. The Israeli government seems to think it's good enough to take. I guess that's the best evidence we have.

Also, I expect Hamas to break the agreement. Then Israel can go back to doing what it was doing.

But I'm just spitballin' here.

I'm pretty clueless about this.