ETH / JETPAD
fee 0%- Swap ETH → JETPADhook takes 1.00%
- Swap JETPAD → ETHhook takes 1%
- Add, then remove liquiditycame back whole
pool 0xe3fcfc2539add7e0eb6788d033c77a9cb1a677d567267888726c54371e43f67d
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 81 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 1% 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 transferCreator, claim, claimable, claimsBalance.
Not a proxy, no DELEGATECALL, no SELFDESTRUCT.
Each callback refused a call that did not come from the PoolManager.
3 pools over 81 days.
Measured at block 93,362,075. 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 0xe3fcfc2539add7e0eb6788d033c77a9cb1a677d567267888726c54371e43f67d
pool 0x8a3bb0b147dcbc90483c72737ced1a135767255128e9809d84958540152e83a7
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.