USDG / xMEDS
fee dynamic, now 0%- Swap USDG → xMEDShook takes 1.00%
- Swap xMEDS → USDGtoo little liquidity to measure
- Add, then remove liquiditycame back whole
pool 0xbba9bfe3b99b8c092d350ff2e6892a5e63c48af7df4dc7ea58b25204a545c914
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 21 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 20 days.
Measured at block 93,270,732. 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 0xbba9bfe3b99b8c092d350ff2e6892a5e63c48af7df4dc7ea58b25204a545c914
pool 0x3fc661ce72e327dc3d1ad8eb115884ffc9dea1b0f1c09a9a348615970b187af9
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.