MRVL / Robinhood
fee 0%- Swap MRVL → Robinhoodhook takes 1.00%
- Swap Robinhood → MRVLhook takes 1%
- Add, then remove liquiditydeposit refused: LiquidityLocked
pool 0x27d661168c1bbda5ed75c3a74930522ab43b5d8a862a6998bd42e02eb0790b9c
Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
3221 pools use this hook, the first one 86 d ago.
The address enables before remove liquidity, 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.
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.
3221 pools over 85 days.
Measured at block 92,892,006. 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 0x27d661168c1bbda5ed75c3a74930522ab43b5d8a862a6998bd42e02eb0790b9c
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.