AntiMevTaxHook

A custom pricing hook. It sets its own prices, pays extra to liquidity providers and controls who adds or removes liquidity.

• Sets its own prices

  It can change how much traders get out of a trade, using its own pricing instead of Uniswap’s normal formula.

• Pays extra to liquidity providers

  It sends extra rewards straight into the pool for liquidity providers.

  The code that does this (handleAfterSwap):

  function _handleAfterSwap(
      address sender,
      PoolKey calldata key,
      SwapParams calldata params,
      BalanceDelta delta
  ) private returns (bytes4, int128) {
      uint256 busy;
      assembly ("memory-safe") {
          busy := tload(T_BUSY)
      }
      if (busy != 0) return (IHooks.afterSwap.selector, 0);
  
      (uint256 amountOut, uint256 tax) = _recordAndMeasureTax(key, params, delta);
      if (tax == 0) return (IHooks.afterSwap.selector, 0);
  
      // donate debits this hook and the returned delta credits it back, so the
      // tax ends up in feeGrowthGlobal and the hook's own balance stays zero.
      assembly ("memory-safe") {
          tstore(T_BUSY, 1)
      }
      bool donated;
      try manager.donate(key, params.zeroForOne ? 0 : tax, params.zeroForOne ? tax : 0, "") returns (BalanceDelta) {
          donated = true;
      } catch {}
      assembly ("memory-safe") {
          tstore(T_BUSY, 0)
      }
  
      if (!donated) return (IHooks.afterSwap.selector, 0);
  
      // …

• Rules for adding or removing liquidity

  It decides who can add or remove liquidity, or when.

  The code that does this (beforeAddLiquidity):

  function beforeAddLiquidity(address sender, PoolKey calldata, ModifyLiquidityParams calldata, bytes calldata)
      external
      view
      onlyManager
      returns (bytes4)
  {
      if (!liquidityAdder[sender]) revert NotLiquidityAdder(sender);
      return IHooks.beforeAddLiquidity.selector;
  }

Who controls it: The code itself can’t be changed. The hook developer can change: liquidity adder, before add liquidity, after swap.

Based on the hook’s published code.

• Liquidity adder set 1 time
  Latest transactions

  • 0x41980011…d14122 block 109,920,304

  See every one on the explorer ↗

Only recent activity is shown: this hook’s past history hasn’t been read yet.

Update history

Counted from what the hook recorded on-chain across all its pools, for every action in its published code, plus token transfers in and out of it. Still reading older history, so totals will grow.