ETH / SAFEMOON
fee 0%- Swap ETH → SAFEMOONhook takes 2.00%
- Swap SAFEMOON → ETHno liquidity above the price
- Add, then remove liquiditycame back whole
pool 0x0b7dc42690c3dbe1df82700d4e18e3e67bfeb654d2baedc93436593a2a267d90
Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
11 pools use this hook, the first one 42 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 4% 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.
No owner() but it has sweep.
Not a proxy, no DELEGATECALL, no SELFDESTRUCT.
Each callback refused a call that did not come from the PoolManager.
11 pools over 42 days.
Measured at block 93,087,646. 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 0x0b7dc42690c3dbe1df82700d4e18e3e67bfeb654d2baedc93436593a2a267d90
pool 0x2cf9af266700afabb65b6c2388c5af0c864ae8de61e3549d4c9f71d5e1893d26
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.