UniswapV4Hook
EthereumRegisteredExtracts a 2.2% tax on buy and sell swaps via BeforeSwapDelta. Buy-side ETH fees accumulate in a burn pot for buyback-and-burn every 20 swaps; sell-side tokens are queued and burned on later swaps. Only one liquidity addition per token is permitted. Additionally, afterSwap enforces a sell-side allowlist: when timeBased[token] is enabled (activatable by anyone via registerBurner()), sells revert for any tx.origin not in the deployer-controlled hasValue allowlist.
ALooks safeRegistered, verified, immutable
Pools
2
Dynamic-fee pools
0
Last new pool
2mo
Code size
8,668 B
What it can do
Runs code on every swap
Its code executes inside each trade in pools that use it.
Can take tokens from swaps
It can take or add tokens during a swap. Fees, burns and custom curves work this way, and so do scams.
Gates who can add liquidity
It checks every deposit before it goes in.
Runs at pool creation
It runs when a pool is created, often to lock in that pool’s settings.