"Circle Internet Group, Inc. announced the launch of Circle Agent Stack, a new set of services and tools designed for the agentic economy. Initial products in Circle Agent Stack include Circle CLI (Command Line Interface), Agent Wallets, Agent Marketplace, and Nanopayments powered by Circle Gateway. Together, these products and capabilities help developers and self-running AI agents to build systems where agents can hold assets, discover services, and transact programmatically with USDC across supported blockchains and payment protocols."