WETH / TEST003
fee 0.30%- Swap WETH → TEST003hook takes 10.00%
- Swap TEST003 → WETHhook takes 10%
- Add, then remove liquiditycame back whole
pool 0xea4f50d1cc18e3f7579153de508692af7338b1ab34c48d689b394c7abbad2d69
Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
8 pools use this hook, the first one 8 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 10% of each swap on top of the pool fee.
Liquidity added and removed in the same block came back whole.
A fixed fee of 0.30%, written in the pool key.
No owner and no admin functions found.
Not a proxy, no DELEGATECALL, no SELFDESTRUCT.
Each callback refused a call that did not come from the PoolManager.
8 pools over 8 days.
Measured at block 93,114,371. 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 0xea4f50d1cc18e3f7579153de508692af7338b1ab34c48d689b394c7abbad2d69
pool 0x231c17fd12e5868887a62534f8f71626c18deaec2cb4bac6ef115ddb6956a907
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.