WETH / SAOF
fee dynamic, now 0%- Swap WETH → SAOFhook takes 1.99%
- Swap SAOF → WETHhook takes 1.99%
- Add, then remove liquiditycame back whole
pool 0xd6801016e02e7a89f9fb5001a3c74a186273345c75db7b0ba25948d98182bb37
Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
4 pools use this hook, the first one 78 d ago.
The address enables before swap returns delta. The hook is allowed to take; the next two checks measure whether it does.
It takes 1.99% 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.
4 pools over 78 days.
Measured at block 93,361,981. 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 0xd6801016e02e7a89f9fb5001a3c74a186273345c75db7b0ba25948d98182bb37
pool 0x86d9a0e9092beaa7af80ecd595e7122e3ff248d2c27a0bb2bc4e0a0968a8a386
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.