USDC Dominates Agentic Payments on Coinbase x402 Protocol
The Coinbase x402 protocol has seen a meteoric rise in usage over the past year, with cumulative transactions crossing 160 million by June 2026. This growth is largely driven by agentic payments, where AI agents buy and sell services from each other without human intervention.
USDC dominates this space, accounting for nearly 100% of all agentic transfer volume on x402 over the past 90 days. The average transaction value is a mere $0.13, with most transactions valued at $1 or more making up 95% of recent transfer values by count.
Circle's early integration into Base infrastructure and aggressive development of tools for AI agent payments have contributed to USDC's dominance. In May 2026, Circle launched the Agent Stack, which includes gas-free nanopayments enabling transactions as small as $0.000001.