The x402 protocol has launched a blockchain-based payment gateway aimed at facilitating seamless and low-cost transactions between AI agents. By utilizing the HTTP 402 'Payment Required' standard in conjunction with blockchain technology, x402 allows for autonomous processing of microtransactions in seconds, eliminating the need for traditional financial intermediaries. This innovative protocol is designed to be simple and compatible with EIP-3009, positioning it as a foundational layer for the emerging AgentFi economy. Major players like Coinbase and PayAI are already developing ecosystems around x402, highlighting its potential to revolutionize AI agent payments.