
0x Protocol has opened its Swap API to AI agents, allowing them to access liquidity aggregation services by paying $0.01 in USDC per request without needing API keys or accounts. This is enabled through Alchemy’s AgentPay middleware using the HTTP 402 Payment Required standard, allowing autonomous agents to handle their own payments and execution across multiple blockchains and liquidity sources. This move aims to simplify access for AI developers and expand usage beyond crypto-native systems by integrating with traditional payment networks. While promising, the micropayment model faces challenges based on past internet experiences with similar systems.