EulerSwap
ArbitrumRegisteredA custom curve AMM hook for Uniswap v4 that routes swaps entirely through Euler Finance EVaults, using its own pricing curve (CurveLib/QuoteLib) and reserve tracking instead of Uniswap's CLMM. The hook returns a BeforeSwapDelta to override pool accounting, deposits input tokens into Euler vaults, and withdraws output tokens from Euler vaults. Each hook instance is a minimal proxy delegating to a shared EulerSwap implementation; native CLMM liquidity and direct pool initialization are blocked.
What it can do
Its code executes inside each trade in pools that use it.
It can take or add tokens during a swap. Fees, burns and custom curves work this way, and so do scams.
It checks every deposit before it goes in.
It runs when a pool is created, often to lock in that pool’s settings.
It runs when someone donates tokens to the pool’s LPs.