Circle has launched Arc Studio, an AI coding agent that turns natural-language prompts into testable full-stack on-chain applications, while Kite is partnering with Circle on a related Arc-based payment system for AI agents. Studio generates interfaces, backend logic, tests and Solidity contracts; the Kite system is designed to let agents discover services, negotiate prices, execute transactions, deliver and verify services, and settle payments in USDC. Kite will manage service contracts and delivery through its Seller Console and Agent Passport, while Arc handles USDC payments and settlement, with escrowed funds released after delivery confirmation. Studio supports Circle products and nine blockchains, including Arc, and provides real-time traces, code export and testing tools. Circle announced Studio on Sept. 17, after Arc’s Sept. 16 public mainnet launch, while BlockBeats reported the Kite development on September 18.