WETH / SLURP
fee 1%- Swap WETH → SLURPnothing taken
- Swap SLURP → WETHnothing taken
- Add, then remove liquiditycame back whole
pool 0xfa4fd0aa06a5428fa40aaaa3f74a67bdd7110c74819f9626a5410ca254880da4
Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
11 pools use this hook, the first one 27 d ago.
The address enables after swap returns delta. The hook is allowed to take; the next two checks measure whether it does.
A swap through it pays the pool fee and nothing else.
Liquidity added and removed in the same block came back whole.
A fixed fee of 1%, written in the pool key.
No owner() but it has setFactory, setAdmin.
Not a proxy, no DELEGATECALL, no SELFDESTRUCT.
Each callback refused a call that did not come from the PoolManager.
11 pools over 26 days.
Measured at block 93,059,961. 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 0xfa4fd0aa06a5428fa40aaaa3f74a67bdd7110c74819f9626a5410ca254880da4
pool 0xc829ef3dd1a188936bab097f6c655d78bf759b3a9f30eb21b6feb298b9287f71
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.