Robinhood Chain hook

YardkeepersFeeHook

ListedRobinhood ChainVerified source
0x617f5a7e2fd47ecd038910a13d5027bc724080ccBlockscout

A Uniswap v4 hook that charges a volatility-based ETH fee on every swap for ETH/token pools. Buy fees are taken from ETH input in beforeSwap; sell fees from ETH output in afterSwap. The fee rate scales dynamically between a configured base and max (1%–7%) based on the tick movement of the previous swap, with fees sent immediately to a per-pool fee recipient.

2Pools
0Swaps, 7 days
$0Volume, 7 days
79 days agoFirst pool

What it can do to your swap

  • Can take a fee from your outputAfter the pool fills your swap, the hook can keep part of what you were about to receive.
  • Can change the price you getBefore your swap runs, the hook can take or add tokens, so the amount you get is set by its code as well as the pool.
  • Runs code before your swap and can block itThe hook is called before every swap. It can revert, which makes your swap fail.
  • Runs code after your swap and can block itThe hook is called after every swap. It can revert, which undoes your swap.

Read from the hook address: flag bits beforeSwap, afterSwap, beforeSwapReturnsDelta, afterSwapReturnsDelta. Flags glossary.

Last test swap

A quote for a tiny exact-in swap each way through ETH / ? with Uniswap's V4 Quoter, compared with the pool's mid-price minus its 0.00% LP fee. It is an eth_call: nothing is signed or spent. Probed 1 s ago, every hour.

ETH to ?5.00% takenIn 0.0000218112 ETHOut 6,868 ?, expected 7,229.55Gas 69,834
? to ETHRevertedIn 7,229.55 ?Out - ETH, expected 0.0000218112Gas -

Pools

PairFeeSwaps 7dVolume 7dCreated
ETH / ?
0xf4513a…b62d76
0.00%0$076 days agoSwap
ETH / ?
0x724d2c…84b027
0.00%0$076 days agoSwap