Circle Unveils AI Agent Technology Capable of Managing Wallets and Sending USDC Automatically
AI Agents Can Now Transact Independently Using USDC, Circle Showcases the Future of AI-Powered Economy
An AI agent recently demonstrated advanced capabilities by entering a digital store, purchasing a phone number, making a call, delivering market analysis, and paying all related costs on its own. Notably, the entire process happened without any human involvement.
All of these activities were powered by USDC through Circle’s latest infrastructure called Agent Stack. The demonstration offers one of the clearest real-world examples of how the concept of an agentic economy—where AI operates independently in economic activities—could function in practice.
During the demo, the AI agent purchased a phone number for 5 USDC, initiated a voice call to deliver market analysis, and then paid the call fee of 0.133 USDC. In other words, the AI software was able to manage its own digital wallet, decide which service it needed, purchase that service, and complete the payment automatically on-chain.
Understanding Circle’s Agent Stack
Circle officially launched Agent Stack on May 11, 2026. The infrastructure is built around three core components: programmable Agent Wallets, gas-free Nanopayments, and an Agent Marketplace where AI agents can discover and transact with digital services.
One of the most notable features is Nanopayments, which supports USDC transactions as small as 0.000001 USDC, allowing six decimal places of precision.
This system is specifically designed to support AI agents that require frequent low-value transactions, such as thousands of API calls, data retrieval requests, or access to digital services that cost only fractions of a cent.
Behind the payment system is an open protocol called x402, which enables AI agents to settle payments instantly using USDC without requiring any human approval. The protocol essentially turns USDC into a native settlement layer for machine-to-machine commerce.
USDC Dominates AI Agent Transactions
Data shows adoption is growing rapidly. Between March 2025 and March 2026, more than 400,000 AI agents used USDC for on-chain purchases.
During that period, those AI agents completed roughly 140 million transactions, with the total transaction value reaching US$43 million.
The average transaction value stood at around US$0.31, indicating that most payments were microtransactions—small-value payments for digital services that only make sense on networks with extremely low fees.
Perhaps most notably, around 98.6% of all AI agent transactions during the nine months leading up to March 2026 were settled in USDC.
This suggests that compared with Bitcoin, Ethereum, and other DeFi tokens, USDC is increasingly becoming the primary currency for autonomous AI-driven commerce on blockchain networks.
