HI / HOOKR
fee dynamic, now 0%- Swap HI → HOOKRhook takes 0.30%
- Swap HOOKR → HIhook takes 0.55%
- Add, then remove liquiditycame back whole
pool 0x9d122d9b526ad72eebd1ac6998b6f0c5197a08cc8b0b38ff56f7b64d8fc02197
Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
45 pools use this hook, the first one 42 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 0.55% on top of the pool fee.
Liquidity added and removed in the same block came back whole.
Its pools use a dynamic fee that the hook sets before every swap. It stands at 0% now and can change.
No owner and no admin functions found.
The bytecode contains DELEGATECALL.
Each callback refused a call that did not come from the PoolManager.
45 pools over 41 days.
Measured at block 92,922,332. 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 0x9d122d9b526ad72eebd1ac6998b6f0c5197a08cc8b0b38ff56f7b64d8fc02197
pool 0x1ebfca765041e6c69ed31f5c5e9569e9d00d8ba12f50ed4c6474ffdccbc349b6
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.