TAAPL / AAPL
fee 0%- Swap TAAPL → AAPLrefused: ExactInputNotFilled
- Swap AAPL → TAAPLhook takes 10.00%
- Add, then remove liquiditycame back whole
pool 0xe99629083c3c1cba5c05fa6185a89a775f96299d4968f015930d4bb205c7b3d8
Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
3 pools use this hook, the first one 37 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.
One direction works and the other is refused (ExactInputNotFilled). You may be able to buy and not sell.
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 setSchedule, collect.
Not a proxy, no DELEGATECALL, no SELFDESTRUCT.
Each callback refused a call that did not come from the PoolManager.
3 pools over 36 days.
Measured at block 93,393,542. 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 0xe99629083c3c1cba5c05fa6185a89a775f96299d4968f015930d4bb205c7b3d8
pool 0x30795b45bdd41f607357087c63ba07aa1f109b40fb4cc31010e2f51c09c27e3e
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.