Durability rating
Yield & returnsUSD.NET's A–E grade for how likely a pool's yield is to persist, built from depth, reward sustainability and TVL/peg stability.
Depth measures whether the pool can absorb an exit. Sustainability measures how much of the yield is organic rather than emitted. Stability measures how violently TVL and price have moved.
Pools with thin history default to a middle band rather than a top grade — new does not mean bad, but it does mean unproven.
Why it matters
It separates yields that are compensation for genuine risk from yields that are a temporary subsidy.
See it in action
Related terms
Headline APY discounted by the pool's durability rating, so a fragile 20% and a robust 6% can be compared on one axis.
Base APY comes from organic borrowing demand or trading fees. Reward APY comes from token emissions and is contingent on the incentive programme continuing.
Value of assets deposited in a pool or protocol. Used as a depth proxy: it caps the size you can enter and exit without moving the market.