When you want to rebuild a closed source indicator, you must know why you are doing it. You are not copying a tool. You are trying to create a trading strategy you can trust.

A closed source indicator hides how the signals are created. You only can see the indicator on screen but cannot see the logic, which means you cannot measure the strategy, automate it, and test it.

AI in trading has become so helpful because it can rebuild the indicator logic as long as the data is visible on the chart. But AI does not fix bad inputs, if you give it messy data.

This method works only for indicators that show their values directly on the chart. It does not work for hidden data. And it works best with moving average based designs.

Once you rebuild the indicator into code, you gain control. You gotta stop trusting someone else’s signals because you have already built your own trading strategy.