Catena Labs, co-founded by Sean Neville of Circle, has raised $18 million to establish a new AI bank.The AI bank aims to cater to the growing AI agent economy, focusing on utilizing stablecoins like USDC for efficient and cost-effective transactions.The firm plans to have AI workers handle various tasks within the financial institution, with human supervision for risk management and compliance.Top investors in Catena Labs' funding round include Andreessen Horowitz, Coinbase Ventures, Tom Brady, Breyer Capital, and Circle Ventures.