ETH / FIDX
fee 0%- Swap ETH → FIDXhook takes 3.00%
- Swap FIDX → ETHhook takes 2.95%
- Add, then remove liquiditycame back whole
pool 0xd09ac712191edbe82792fc4fbd05efea4fddfc1bd9a38d5759045c9b603c39ea
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 79 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 3.00% of each swap 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 0x76cB3f88c3cF755ba482a2dB7E2022A75d0f9742. 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.
4 pools over 78 days.
Measured at block 93,238,249. 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 0xd09ac712191edbe82792fc4fbd05efea4fddfc1bd9a38d5759045c9b603c39ea
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.