Arc plugs Morpho Vaults into its Earn Kit SDK for USDC yield

Arc, the layer-1 blockchain developed by Circle, has rolled out its Earn Kit SDK. The kit lets developers connect USDC sitting in Arc apps directly to curated Morpho Vaults so users can earn interest. What the Earn Kit actually does The Earn Kit SDK is part of Arc’s broader App Kits suite. Its job is narrow and practical: embed USDC and EURC earning features inside applications without forcing builders to become DeFi engineers. Developers skip several chores that normally come with offering yield. There is no need for custom DeFi protocol integrations, no vault contracts to write and no markets to bootstrap from scratch. Instead, the SDK takes care of the plumbing. It handles vault discovery, deposits, position tracking and withdrawals on the developer’s behalf. For builders, the interface is a set of TypeScript methods. Functions such as exploreVaults and deposit stand in for the smart contract code that would otherwise be required. The setup is non-custodial. Users keep control of their funds through their own wallets, and their USDC sits in vault contracts rather than with the app or Arc. Early numbers and partners Day-one deposits topped $150 million across USDC and EURC vaults...