The way in which states are called to account under the Convention against Torture is that the convention establishes a committee, and states are required to appear before the committee on a periodic basis to report to the committee as to whether their domestic laws and practices bring the state into conformity with the convention. There is a public airing before the committee of every state that is a party to the convention on how they're doing with the compliance.
There is also what's called an optional protocol to the convention. Not everybody who is a party to the convention has signed up for the optional protocol, but those who have are required to allow international investigators to visit their places of detention, for example, prisons and penitentiaries, in order to make sure the kinds of things that would meet the torture definition are not occurring.
Dan, I don't know if there's anything you wanted to add to that.