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Rosetta routes capital to lending markets across two protocols: Morpho and Aave. Each protocol has a different market architecture.

Morpho Markets

A Morpho lending market is an isolated pool where lenders supply assets and borrowers take loans against collateral. Each market is defined by five parameters:
ParameterDescription
Collateral assetAsset borrowers lock (e.g., HYPE, ETH, BTC)
Loan assetAsset lenders supply and borrowers receive (e.g., USDC, USDT0)
LLTVLiquidation Loan-to-Value, threshold at which positions become liquidatable
OraclePrice feed used to value collateral
IRMInterest Rate Model, determines rates based on utilization
Utilization Utilization is the ratio of borrowed assets to total supplied assets: Utilization = Total Borrowed / Total Supplied Supply APY = Borrow APY × Utilization × (1 − Fee) Utilization drives rates. Higher utilization means higher rates. Lower utilization means lower rates. Liquidity Available liquidity = Total Supplied - Total Borrowed This is what can actually be borrowed at any moment. When utilization is high, available liquidity is low. Price Per Share (PPS) Lenders receive shares representing their claim on the pool. As interest accrues, total assets grow while shares stay constant. The ratio (assets/shares) increases over time. This is how yield is realized without explicit payments. Isolation Markets are isolated. A WHYPE/USDC market and a kHYPE/USDC market share nothing: different collateral, different risk parameters, different utilization. Bad debt in one market does not affect others. Morpho markets are available on both HyperEVM and Base.

Aave Markets

Aave uses a pooled lending model where multiple assets share a single lending pool. Unlike Morpho’s isolated markets, Aave pools aggregate supply and demand across assets.
ParameterDescription
Reserve assetThe asset being supplied and borrowed (e.g., USDT0, USDC)
aTokenInterest-bearing token received when supplying (represents your deposit + accrued interest)
Variable rate modelInterest rate determined by pool utilization with configurable slope parameters
Liquidity indexCumulative multiplier tracking total interest accrued since pool inception
How Aave Differs from Morpho
AspectMorphoAave
ArchitectureIsolated markets per collateral/loan pairPooled lending across assets
Interest trackingPrice Per Share (PPS)Liquidity index + aToken balance
Rate modelAdaptive Curve IRM (self-adjusting)Variable rate with configurable slopes
Risk isolationFull — each market independentShared pool — oracle risk affects all assets
The Yield Router evaluates Aave supply APY alongside Morpho vault APY when making allocation decisions.