From what I've read in mechanism design theory, it seems to me that the mechanism designer always plays an essential role in a mechanism. Information is sent to the designer who designs incentives that aim to enforce the truthful revelation of information from the strategic agents of the mechanism.
But, within the mechanism design theory, is it possible to remove the requirement of agents communicating their information to a central authority (aka the designer)?
For example, design a framework where the agents communicate with each other based on certain rules and figure out by themselves the designer's desirable outcome without any communication between the agents and the designer.