WETH / LIL
fee 0%- Swap WETH → LILhook takes 4%
- Swap LIL → WETHhook takes 4%
- Add, then remove liquiditycame back whole
pool 0x205049c943c8b0990302c3afece725beb942533b3ed8615daaeffe10f4c152c5
Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
544 pools use this hook, the first one 6 d ago.
The address enables 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 collect.
Not a proxy, no DELEGATECALL, no SELFDESTRUCT.
Each callback refused a call that did not come from the PoolManager.
544 pools, first seen 6 days ago.
Measured at block 92,889,084. 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 0x205049c943c8b0990302c3afece725beb942533b3ed8615daaeffe10f4c152c5
pool 0xcf9b5ccecdbf0e0be99e013cf062228c48d070d33f56062ea00ca6f0ba80ea65
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.