AI Agents Settle $73M via Stablecoins, USDC Dominates
The rise of AI agents in commerce is no longer theoretical. Over the past year, AI-powered agents settled $73 million across 176 million transactions using stablecoins, according to a May 24 report by crypto investment firm Keyrock. These agents are autonomous software systems capable of performing tasks like executing payments, negotiating terms, and interacting with APIs—often with minimal human oversight. Circle‘s USDC emerged as the dominant settlement currency, accounting for more than 98% of these transactions. While this highlights USDC’s efficiency for micropayments, Keyrocks Ben Harvey warns of systemic risks tied to reliance on a single stablecoin issuer. “If Circle faces regulatory challenges or downtime, the agent economy has no fallback,” Harvey noted in the report. Why Stablecoins Are Winning AI agents have rapidly adopted stablecoins as their default settlement layer, primarily due to the inefficiency of traditional payment systems for high-volume, low-value transactions. The Keyrock report found the average transaction size was just $0.31. With legacy payment networks like Visa imposing fixed fees near $0.30 per transaction, sub-dollar payments become uneconomical. Stablecoins solve this problem by enabling near-instant, low-cost transfers without intermediaries. “Stablecoins won the settlement layer for machine commerce almost by default,” Harvey said. The programmable nature of blockchain payments also allows