INU / pWOOF
fee 0.50%- Swap INU → pWOOFhook takes 1%
- Swap pWOOF → INUhook takes 1%
- Add, then remove liquiditycame back whole
pool 0x26562f4c31bce74556429fd61f9c314cd66a3bb43edbb7f1c7e5b304da6c270f
Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
6 pools use this hook, the first one 42 d ago.
The address enables before remove liquidity, before swap returns delta, after swap returns delta. The hook is allowed to take; the next two checks measure whether it does.
It takes 1% on top of the pool fee.
Liquidity added and removed in the same block came back whole.
A fixed fee of 0.50%, written in the pool key.
No owner() but it has claimableFees, collectFees, collectFeesTo.
Not a proxy, no DELEGATECALL, no SELFDESTRUCT.
Each callback refused a call that did not come from the PoolManager.
6 pools over 42 days.
Measured at block 93,174,631. 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 0x26562f4c31bce74556429fd61f9c314cd66a3bb43edbb7f1c7e5b304da6c270f
pool 0x8a0b3b6e94124e5548ebfb6a8298f57a476eb50784dcfb2b7d845148dbd0f5f1
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.