MetaMask and Aave have launched a new feature allowing users to spend Aave's yield-bearing aUSDC directly through the MetaMask Card, a Mastercard-powered debit card. This integration enables users to pay at any Mastercard-accepting merchant globally, converting only the necessary amount of aUSDC to fiat at the point of sale, while the remaining balance continues to earn interest in Aave's lending market. Transactions settle instantly on Linea, an Ethereum Layer-2 network. The MetaMask Card, available in the US and Europe, offers up to 3% cashback on its Metal tier, enhancing the yield from Aave. This development builds on MetaMask's Stablecoin Earn product, which allows users to deposit stablecoins directly into Aave lending markets. With MetaMask's user base exceeding 100 million and Aave's history of processing over $70 billion in net deposits, this partnership aims to enhance capital efficiency by allowing users to maintain liquidity and yield simultaneously.