ETH / TEST2
fee 0%- Swap ETH → TEST2hook takes 3.32%
- Swap TEST2 → ETHhook takes 3.32%
- Add, then remove liquiditycame back whole
pool 0x4bee46faef9faaec5f273c54ccffbed4d822c15ec233848015e94fcd325f4c8b
Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
3 pools use this hook, the first one 98 d ago.
The address enables before swap returns delta, after swap returns delta. The hook is allowed to take; the next two checks measure whether it does.
It takes 3.32% of each swap on top of the pool fee.
Liquidity added and removed in the same block came back whole.
A fixed fee of 0%, written in the pool key.
Owned by 0xF7B7b5c705cCe54b9Ea379e8612AC0704382A3d7. Owner-style functions: setPoolFee, setFactory.
Not a proxy, no DELEGATECALL, no SELFDESTRUCT.
Each callback refused a call that did not come from the PoolManager.
3 pools over 97 days.
Measured at block 93,328,056. A hook with an owner or a dynamic fee can behave differently later; scan again before a large trade.
A v4 hook's permissions are the last fourteen bits of its address. The PoolManager calls only what they switch on.
A small swap each way and a liquidity round trip, run through the PoolManager and this hook inside a call that is never sent. The pool fee is expected; anything else missing is the hook.
pool 0x4bee46faef9faaec5f273c54ccffbed4d822c15ec233848015e94fcd325f4c8b
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.