USDG / TEST2
fee dynamic, now 0%- Swap USDG → TEST2hook takes 1.50%
- Swap TEST2 → USDGhook takes 1.50%
- Add, then remove liquiditycame back whole
pool 0x2cae51a70b1e2a0c0bd5f1fa25d277b947ecb5bcc9be4d15d558b5824fdcc0f9
Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
5 pools use this hook, the first one 10 d ago.
The address enables after swap returns delta. The hook is allowed to take; the next two checks measure whether it does.
It takes 1.50% 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() but it has claimFees, setCreatorPayout, setFee.
Not a proxy, no DELEGATECALL, no SELFDESTRUCT.
Each callback refused a call that did not come from the PoolManager.
5 pools over 10 days.
Measured at block 93,269,137. 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 0x2cae51a70b1e2a0c0bd5f1fa25d277b947ecb5bcc9be4d15d558b5824fdcc0f9
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.