ETH / GSS
fee 0%- Swap ETH → GSShook takes 1.00%
- Swap GSS → ETHhook takes 1%
- Add, then remove liquiditycame back whole
pool 0xc27392e97555ffb1373fbe6ffd57749029c761ed9208c81a786fba0ab5d1c184
Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
14 pools use this hook, the first one 84 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 1% 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.
No owner() but it has withdrawTreasury, setFactory, settleCreator.
Not a proxy, no DELEGATECALL, no SELFDESTRUCT.
Each callback refused a call that did not come from the PoolManager.
14 pools over 84 days.
Measured at block 92,997,866. 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 0xc27392e97555ffb1373fbe6ffd57749029c761ed9208c81a786fba0ab5d1c184
pool 0xffce7a12a1038b5d96f3e9aa8d7de1136d371fa364f662b2150f97937941d642
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.