Am I Naive in Assuming at Some Point We Know Everything That Was in the Iran Deal?

We're still finding out what was in the Iran nuclear deal after we passed it (well, after Congress failed to reject it in an inversion of the constitutional process of approving foreign treaties):

The Obama administration agreed to back the lifting of United Nations sanctions on two Iranian state banks blacklisted for financing Iran’s ballistic-missile program on the same day in January that Tehran released four American citizens from prison, according to U.S. officials and congressional staff briefed on the deliberations.

The U.N. sanctions on the two banks weren’t initially to be lifted until 2023, under a landmark nuclear agreement between Iran and world powers that went into effect on Jan. 16.

At this point I wouldn't be horribly shocked to discover that the reason the Obama administration is so sure Iran has ended their nuclear weapons programs is because we committed to shipping a dozen Minuteman III missiles to Iran, complete with the warheads and targeting codes.