https://api.kite.trade/instruments - This sometimes does not have all the product list in it. For example, FEDERALBNK option chain today. The last CE strike it is giving is 134 but nseindia shows that strike 143 also exists. It is not just a problem with API but I saw Kite and Sensibull also having that limited option chain.
What is the frequency of updating of this instruments file? If new products with strike are added in NSE how long does it take to be reflected via instruments API. Also, can this come with a timestamp or a web socket event so that we can subscribe to it and know when new file has arrived?