YO Protocol is a non-custodial multi-chain DeFi yield optimizer operating across blockchains like Ethereum and Base. It uses ERC‑4626 “yoVaults” to pool assets and automatically rebalance deposits into various DeFi strategies for risk-adjusted yield. Users deposit into vaults (e.g., yoUSD, yoETH), receive redeemable tokens, and may face asynchronous withdrawal delays if liquidity is insufficient. The protocol incorporates built-in safeguards—such as oracle monitoring, automatic pausing, fee controls, and authorized operators.