Crypto Briefing • October 8th 2026, 7:34 PM
Arc plugs Morpho Vaults into its Earn Kit SDK for USDC yield
Key Summary
Arc, the layer-1 blockchain developed by Circle, has rolled out its Earn Kit SDK, allowing developers to connect USDC to curated Morpho Vaults for users to earn interest without requiring custom DeFi protocol integrations. Early numbers show $150 million in deposits, with two integrations already on board and full mainnet deployment expected by late September 2026.
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Early Adoption and Partnerships
Day-one deposits topped $150 million across USDC and EURC vaults, with two integrations already on board, Pulsar Money Earn and SafePal. Early numbers demonstrate the potential of the Earn Kit SDK.What the Earn Kit Does
The Earn Kit SDK is a developer-friendly front door to Arc's credit infrastructure, providing a non-custodial way for users to earn interest on their USDC. The kit handles vault discovery, deposits, position tracking, and withdrawals on behalf of the developer.Supported Opportunities
The kit supports cross-chain deposits facilitated by CCTP, along with gas sponsorship, allowing users to pay transaction fees without holding a separate token.Risks and Future Development
While the Earn Kit offers a convenient way for developers to integrate lending functionality, there are risks associated with yield from lending, including collateral and curation risks. The non-custodial design protects users from app misuse, but not from market risk within the vault.Conclusion
The Earn Kit SDK is an important step in Arc's App Kits suite, providing a practical way for developers to offer yield to their users. As the platform continues to evolve, it will be interesting to see how the Earn Kit SDK is adopted and how the risks associated with lending are mitigated.#Crypto#US#USDC#MorphoVaults#EarnKit