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Introduction

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What is Rosetta

Rosetta is yield infrastructure for DeFi, built to make on-chain yield transparent and actionable across chains and protocols. It currently operates on HyperEVM and Base, routing capital across Morpho and Aave markets and vaults. It supports USDT0 and USDC as routable assets. Rosetta consists of two core components: Indexer: A block-level data infrastructure that tracks lending markets, vaults, and yields continuously across supported chains. Computes state every block for accurate APY reporting, utilization tracking, and liquidity monitoring. Yield Router: A non-custodial allocation system that routes capital across vaults and lending markets based on real-time yield data, user-defined policies, and cost-aware execution logic. The Indexer provides the data layer. The Yield Router consumes that data to make allocation decisions and execute them through user-controlled smart accounts. Together, they form infrastructure that applications (including the Router itself) are built on.

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Supported Chains and Protocols

ChainProtocolsAssets
HyperEVMMorpho, AaveUSDT0, USDC
BaseMorphoUSDC

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Principles

Non-custodial: Users operate through smart accounts (sub-accounts) that they control. Rosetta orchestrates deposits and rebalances within these accounts, but withdrawals can only be sent to the user’s main wallet. Funds never sit in Rosetta’s custody. Block-level precision: Interest accrues every block. The Indexer reflects this by computing vault and market states at block cadence, enabling accurate yield comparisons and APY reporting. User-controlled policies: Users define which vaults, protocols, and assets the Router can access. These policies are stored on-chain and enforced programmatically. Changing them requires the user’s signature. Transparent by default: Every yield figure, allocation decision, and rebalancing action is derived from on-chain data and verifiable. Users see where returns come from, not just what they are. Fully automated: Once policies are set, the Router handles allocation and rebalancing without manual intervention. Users define the rules; Rosetta executes within them. Sponsored execution: Rosetta covers all gas costs for deposits, withdrawals, and rebalancing. The APY users see is the APY they earn. No hidden transaction costs eating into returns. Multi-chain: Rosetta operates across multiple chains, enabling users to access the best yield opportunities regardless of which network they originate from.