YES! This is very much possible and easy to do using our optional parameters. Every indicator has a dedicated page where you can find out which optional parameters you can adjust (and what the default values are). Here is our list of indicators https://taapi.io/indicators/ and you can see, for example, for the RSI https://taapi.io/indicators/relative-strength-index-rsi/ you can change the optional period parameter to anything other from the default 14.

Here's an example how to set the RSI period to 20:

https://api.taapi.io/rsi?secret=APIKEY&exchange=binance&symbol=BTC%2FUSDT&interval=1d&period=20

Another example, setting the EMA to period of 200:

https://api.taapi.io/ema?secret=APIKEY&exchange=binance&symbol=BTC%2FUSDT&interval=1h&period=200

Heads up - where Trading View often uses length (e.g. RSI length, EMA length), we say "period" - it's the same thing :)