ROBINFROG / WETH
fee dynamic, now 1%- Swap ROBINFROG → WETHno liquidity below the price
- Swap WETH → ROBINFROGhook adds 0.71%
- Add, then remove liquiditycame back whole
pool 0xc6404bc2cef3f7edcf2561da8cc466c3991bbfa61b1796a43bc090c49a14c28c
Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
6 pools use this hook, the first one 42 d ago.
None of the permissions that let a hook take from swaps or from LPs are switched on.
A swap through it pays the pool fee and nothing else.
Liquidity added and removed in the same block came back whole.
Its pools use a dynamic fee that the hook sets before every swap. It stands at 1% now and can change.
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.
6 pools over 41 days.
Measured at block 93,176,051. 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 0xc6404bc2cef3f7edcf2561da8cc466c3991bbfa61b1796a43bc090c49a14c28c
pool 0x095b27762ff1df48f89d1e2bafb4d0373ccd6a85f23c85b77dcf464ec86c7a3c
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.