UNPACKING THE DAI STACK

Summary from the TLDR Crypto newsletter

The deAI stack comprises three interoperable layers: x402 from Coinbase and Cloudflare for agent payments via stablecoins at the application layer, ERC 8004 as an onchain discovery registry mapping agent IDs to capabilities using NFT-based AgentCards, and Google's A2A protocol for handling transport-layer communication through JSON-RPC over HTTPS. These standards mirror the traditional internet stack, where TCP/IP handles transport, DNS manages discovery, and HTTP enables applications, but extends functionality to allow agents to transact and coordinate with onchain resources. The architecture enables complete workflows like purchasing a refrigerator, where ERC 8004 discovers the merchant agent, A2A facilitates communication over HTTP endpoints, and X402 processes stablecoin payments and authorization.