AI Agents Can Finally Talk And Pay Each Other Most AI agents today operate in isolation. They can’t easily talk to other agents, discover new services, or exchange value. A2A changes this by introducing an open communication standard that lets agents interact the same way applications use the internet. In this model, one agent can request a service from another, such as weather data, analytics, or computation. If the service isn’t free, x402 steps in. With A2A and x402 integrated, instead of returning an error, the agent responds with a structured 402 Payment Required message containing everything needed for an on-chain transfer. The requesting agent can then evaluate the cost, sign a transaction, and settle it autonomously. This creates a shift in how we think about automation: → A2A enables communication → x402 enables transactions Together, they unlock a real machine to machine economy autonomous, programmable, and open to everyone building the next era of AI.