SPY / TEST9102
fee 0%- Swap SPY → TEST9102hook takes 3.50%
- Swap TEST9102 → SPYhook takes 3.50%
- Add, then remove liquiditydeposit refused: NotPositionManager
pool 0x9504338c87b059033f9096a63397ae1466e7f0593aae417dcb070a6047849225
Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
19 pools use this hook, the first one 47 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 3.50% of each swap on top of the pool fee.
Closed to outside LPs: only the hook's own liquidity is in the pool.
A fixed fee of 0%, 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.
19 pools over 47 days.
Measured at block 92,975,466. 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 0x9504338c87b059033f9096a63397ae1466e7f0593aae417dcb070a6047849225
pool 0xc2bbf1a54c901e78032b68fc28e45414b9638718861a0c52e2571eda042f8937
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.