xMEDS / USDG
fee dynamic, now 0%- Swap xMEDS → USDGtoo little liquidity to measure
- Swap USDG → xMEDShook takes 1.00%
- Add, then remove liquiditycame back whole
pool 0x631b465562da78c20c7542d6942a04dc09da57e2e8fec8bfad3cf40235c4b95a
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 19 d ago.
None of the permissions that let a hook take from swaps or from LPs are switched on.
It takes 1.00% 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 collectFees, setup.
The bytecode contains DELEGATECALL.
Each callback refused a call that did not come from the PoolManager.
5 pools over 19 days.
Measured at block 93,242,549. 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 0x631b465562da78c20c7542d6942a04dc09da57e2e8fec8bfad3cf40235c4b95a
pool 0x3f241f40d6755ab9c73dbcdcb15b560929c7c53cd1795a23447d7d1d94cba268
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.