Author: Jay Yu; Translator: Block unicornForeword
Today, we are seeing the "network protocol stack" of decentralized artificial intelligence (deAI) gradually built up. Just as the internet runs on a series of interoperable standards—TCP/IP for the transport layer, DNS for the service discovery layer, and HTTP for application logic—we can also break down the deAI protocol stack into these three modules: x402 for the application layer, ERC 8004 for the service discovery layer, and A2A for the transport layer—all of which run on top of the traditional HTTP network protocol stack.
In short, the deAI protocol stack defines how agents pay fees, discover resources, and communicate with each other.
Now, let's analyze each part one by one: