Usage of API for personally owned website

“Ensure that all data exposed through the API is legally compliant and has been authorized by the relevant regulatory authorities.” This is very technical. Exactly may i know what you are referring here?

Consider I own a website and it will have only my upstox credentials. I have a list of symbols to be in watchlist, once a stock falls in the price range specified , I would trigger a buy order and will have a SL. I store the trade details in my database and use it for taking reports which will be in the same website. I dont expose the site to others as this will be used for my sole personal purpose.

Everything in the website like template etc, will be licensed and purchased. I am not running this in my localsystem because I would be travelling, so thought of using it as a separate website hosted in cloud. Let me know if I can use this?