WETH / MXVLT
fee 0%- Swap WETH → MXVLThook takes 5.00%
- Swap MXVLT → WETHhook takes 5%
- Add, then remove liquiditycame back whole
pool 0x17833537e9b6a33dd707fe4d779049fc746be50fba074aa9e8701df47e737be0
Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
16 pools use this hook, the first one 82 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 5% 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 claim.
Not a proxy, no DELEGATECALL, no SELFDESTRUCT.
Each callback refused a call that did not come from the PoolManager.
16 pools over 81 days.
Measured at block 92,999,851. 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 0x17833537e9b6a33dd707fe4d779049fc746be50fba074aa9e8701df47e737be0
pool 0x2cc32d290571abfb6c2259d82aba45947462698c821dbf1e31d6da839408fac0
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.