MinimalDiamondCallBackProxy
RobinhoodRegisteredAn ERC-2535 Diamond proxy hook built on the Crane framework that delegates calls to registered facets by function selector. The hook has beforeSwap with delta return capability, plus beforeInitialize, beforeAddLiquidity, beforeRemoveLiquidity, and beforeDonate flags; actual swap logic resides in unverified implementation facets.
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.
Pools using it let the hook choose the swap fee instead of a fixed tier.
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.