too / AAPL
fee 0%- Swap too → AAPLno liquidity below the price
- Swap AAPL → toohook takes 0.70%
- Add, then remove liquiditycame back whole
pool 0xc3ddc2a0184f3bde5ffb3c1e928abef1c237f88cc8fd7e1f88418a190794f879
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 47 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 0.70% 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 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 47 days.
Measured at block 93,271,898. 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 0xc3ddc2a0184f3bde5ffb3c1e928abef1c237f88cc8fd7e1f88418a190794f879
pool 0xe8453148ae6a6f1790ef88adf0ee7b603cfa33150df60d8977e25841cf65da0d
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.