TaxHook

This TaxHook runs one launch pool with a buy tax and a sell tax in ETH. The tax builds up and is sent to a tax wallet. The rates can only ever be lowered.

• Buy and sell tax in ETH

  Buys and sells each pay their own tax, taken from the ETH side before or after the swap depending on how the trade is entered.

  The code that does this (beforeSwap):

  function beforeSwap(address, PoolKey calldata key, SwapParams calldata params, bytes calldata)
      external
      onlyPoolManager
      returns (bytes4, int256, uint24)
  {
      if (_isLaunch(key) && _quoteSpecified(params)) {
          uint256 tax = _specifiedTax(params);
          _collect(_isBuy(params), tax);
          return (this.beforeSwap.selector, int256(_toInt128(tax)) << 128, 0);
      }
      return (this.beforeSwap.selector, 0, 0);
  }

• Taxes can only go down

  The hook developer can lower the rates but the code blocks any increase.

  The code that does this (setTaxes):

  function setTaxes(uint256 buyBps, uint256 sellBps) external onlyOwner {
      if (buyBps > buyTaxBps || sellBps > sellTaxBps) revert TaxIncrease();
      buyTaxBps = buyBps;
      sellTaxBps = sellBps;
      emit TaxesUpdated(buyBps, sellBps);
  }

• Paid to a tax wallet

  Anyone can trigger sending the collected tax to the tax wallet.

  The code that does this (claimTaxes):

  function claimTaxes() external returns (uint256 amount) {
      amount = totalTaxes - paidOut;
      if (amount == 0) revert NothingToClaim();
      paidOut += amount;
      poolManager.unlock(abi.encode(amount));
      emit TaxesClaimed(taxRecipient, amount);
  }

Who controls it: The hook developer can lower taxes, change the tax wallet and hand over control. The code cannot be upgraded.

Based on the hook’s published code.What do these labels mean?