0x44ed…1afc

This launch hook sets the trading fee from how fast the price has been moving, measured by its own built-in price record. The fee stays between a minimum and a maximum, and this version takes no royalty cut.

• Fee follows price speed

  The hook looks at how far the price moved over recent time. Faster moves mean a higher fee, up to the maximum.

  The code that does this (_calculateRate):

  function _calculateRate(LaunchHookFeeContextV2 memory context)
      internal
      view
      override
      returns (uint24)
  {
      if (
          context.maximumPips == context.minimumPips
              || context.feeSensitivityPipsSecondsPerTick == 0
      ) {
          return context.minimumPips;
      }
      (int256 tickChange, uint32 elapsed) = _oraclePriceMovement();
      return DynamicFeeHookRate.calculate(
          context.minimumPips,
          context.maximumPips,
          context.feeSensitivityPipsSecondsPerTick,
          tickChange,
          elapsed
      );
  }

• Built-in price record

  The hook keeps its own price history for its one pool, which it uses to measure movement.

  The code that does this (_calculateRate):

  function _calculateRate(LaunchHookFeeContextV2 memory context)
      internal
      view
      override
      returns (uint24)
  {
      if (
          context.maximumPips == context.minimumPips
              || context.feeSensitivityPipsSecondsPerTick == 0
      ) {
          return context.minimumPips;
      }
      (int256 tickChange, uint32 elapsed) = _oraclePriceMovement();
      return DynamicFeeHookRate.calculate(
          context.minimumPips,
          context.maximumPips,
          context.feeSensitivityPipsSecondsPerTick,
          tickChange,
          elapsed
      );
  }

• No royalty

  Unlike other versions from the same launcher, this one takes no extra royalty fee on trades.

  The code that does this (swapFeeModel):

  function swapFeeModel() public pure override returns (SwapFeeModel) {
      return SwapFeeModel.Dynamic;
  }

Who controls it: The fee limits and sensitivity are set when the hook is created for its pool. Only part of the source is published, so other settings may exist.

Based on the hook’s published code.