Project 0 has introduced 'Project 0 Pay,' a feature enabling users to borrow USDC against their DeFi portfolios to cover real-life expenses. This service allows users to stake their portfolios as collateral, facilitating payments like credit card bills without liquidating assets or halting yield generation. The system connects directly to users' credit cards and bank accounts, automatically converting borrowed USDC into fiat currency for deposit. Founder MacBrennan Peet highlighted that this feature aims to provide DeFi portfolios with bank account-like functionality, offering flexibility in managing daily expenses while preserving long-term investment positions.