USDC Captures 99.3% Share of x402 AI Agent Payments

According to Crypto News, Circle's USDC stablecoin accounts for 99.3% of AI agent payment traffic on x402, an HTTP 402-based machine payment protocol. This figure, derived from on-chain transaction data on the x402 protocol, underscores the dominant role of stablecoins in machine-to-machine payment scenarios. The x402 protocol enables AI agents to initiate and receive payments directly without human intervention, positioning it as a critical component of agent payment infrastructure. USDC's overwhelming share is attributed to its advantages in compliance, liquidity, and exchange support. Analysts note that as AI agents autonomously execute high-frequency, low-value payments in use cases such as e-commerce and content subscriptions, the efficiency and cost benefits of stablecoin settlement are set to become even more pronounced. While the x402 ecosystem remains in its early stages, USDC's near-total dominance could shape future protocol standards and the integration strategies of payment service providers.