test / WETH
fee dynamic, now 0%- Swap test → WETHhook takes 1%
- Swap WETH → testhook takes 1.00%
- Add, then remove liquiditycame back whole
pool 0x303b301a21b56e53ef8948591748c34a6d3930abad9cedd330b0d189a7e1ad19
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 105 d ago.
None of the permissions that let a hook take from swaps or from LPs are switched on.
It takes 1% 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 setSchedule.
Not a proxy, no DELEGATECALL, no SELFDESTRUCT.
Each callback refused a call that did not come from the PoolManager.
4 pools over 104 days.
Measured at block 93,241,333. 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 0x303b301a21b56e53ef8948591748c34a6d3930abad9cedd330b0d189a7e1ad19
pool 0x87724cf42eed46856bd46285a6b3e426357518c1af28b3ff4e8345664f0642be
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.