ETH / JESTER
fee 0%- Swap ETH → JESTERhook takes 1.00%
- Swap JESTER → ETHhook takes 1%
- Add, then remove liquiditycame back whole
pool 0x669e631c581eee786f76e99b0c22829bedfff17aabfa54f706ba242357fb501e
Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
3 pools use this hook, the first one 65 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 1% 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.
Owned by 0x1Aa40e0212254d7Be1C03C0dE6AF5B8Ca84423eF. Owner-style functions: setPoolFee, setFactory, transferOwnership.
Not a proxy, no DELEGATECALL, no SELFDESTRUCT.
Each callback refused a call that did not come from the PoolManager.
3 pools over 65 days.
Measured at block 93,362,802. 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 0x669e631c581eee786f76e99b0c22829bedfff17aabfa54f706ba242357fb501e
pool 0xe35d029d41d931d871f36385a18cc7896f17b71bc9d5ec726d755b29efadb891
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.