Kite Connect is an execution platform and does not provide APIs for indicators. Zerodha only provides raw data, so you will need to calculate indicators like the fixed range volume profile indicator on your own. If you are using Python, you can utilise libraries such as `talib` or `pandas_talib` for these calculations. You can find relevant resources here. Additionally, you may refer to the ChartIQ documentation for details on Kite chart indicator formulas.