V22Hook
RobinhoodRegisteredA launchpad hook that charges fees as hook return deltas on the pool's numeraire leg (static LP fee is zero). Fees combine a base rate, an optional per-pool creator tax (0–10%), and a time-decaying anti-snipe surcharge on buys only; an optional NFT holder gate restricts buying to collection holders during an early window. Liquidity is locked via a burned PositionManager NFT; removals and donations revert.
What it can do
Its code executes inside each trade in pools that use it.
It can take or add tokens during a swap. Fees, burns and custom curves work this way, and so do scams.
It runs before liquidity is removed, so it can delay or refuse LP exits.
It checks every deposit before it goes in.
It runs when a pool is created, often to lock in that pool’s settings.
It runs when someone donates tokens to the pool’s LPs.