WETH / MTX3
fee 0%- Swap WETH → MTX3hook takes 2.50%
- Swap MTX3 → WETHhook takes 2.50%
- Add, then remove liquiditycame back whole
pool 0x60e7ec1118a5c4a338af536273eecf020a72794954bae2ca52afbe70a270aeeb
Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
7 pools use this hook, the first one 51 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 2.50% of each swap 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 claim.
Not a proxy, no DELEGATECALL, no SELFDESTRUCT.
Each callback refused a call that did not come from the PoolManager.
7 pools over 51 days.
Measured at block 93,113,262. 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 0x60e7ec1118a5c4a338af536273eecf020a72794954bae2ca52afbe70a270aeeb
pool 0x3879e379e745e36a34bf0cc2d97cb55f845d8f958a9b0f587727251d98c1855c
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.