SPY / QI
fee dynamic, now 0%- Swap SPY → QIhook takes 2.00%
- Swap QI → SPYhook takes 2.00%
- Add, then remove liquiditycame back whole
pool 0xdac756f99b7a3c5b9ad2c14a25d725fa03b10f433863ae1c64ac9fb0e54664b5
Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
11 pools use this hook, the first one 23 d ago.
None of the permissions that let a hook take from swaps or from LPs are switched on.
It takes 2% of each swap 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.
Not a proxy, no DELEGATECALL, no SELFDESTRUCT.
Each callback refused a call that did not come from the PoolManager.
11 pools over 23 days.
Measured at block 93,061,743. 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 0xdac756f99b7a3c5b9ad2c14a25d725fa03b10f433863ae1c64ac9fb0e54664b5
pool 0x716315b3d2acb44e1c187358530f31b1b9751949d72b6f0c36b6c7a171e6b57f
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.