LONGCAT / USDG
fee 0%- Swap LONGCAT → USDGno liquidity at the current price
- Swap USDG → LONGCATno liquidity at the current price
- Add, then remove liquiditycame back whole
pool 0xfb876b2719bb4ce5e029721ec46d417829b5306a77f9f015dd3bf643bd6c2690
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 after swap returns delta, after add returns delta, after remove returns delta. The hook is allowed to take; the next two checks measure whether it does.
No pool with liquidity to swap through yet.
Liquidity added and removed in the same block came back whole.
A fixed fee of 0%, written in the pool key.
Owned by 0x80390A818C9390Ea6190160BD7fDdFF2cdBdC0Ab. Owner-style functions: setRecipient, setGasThreshold, withdraw, transferOwnership, setQuoter.
Not a proxy, no DELEGATECALL, no SELFDESTRUCT.
Each callback refused a call that did not come from the PoolManager.
3 pools over 37 days.
Measured at block 93,432,379. 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 0xfb876b2719bb4ce5e029721ec46d417829b5306a77f9f015dd3bf643bd6c2690
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.