aadityatamrakar/option_chain_analysis ? reverse-engineered prompt

Build me a simple web page that shows NSE option chain analysis in a clean table and updates with live data when someone opens it.

I want the page to pull the current option chain from the official NSE site, show the call and put data, and let me choose an expiry date so I can filter the results for just that expiry. It should also highlight the basic market view based on price change and open interest change, so I can quickly see whether the move looks bullish or bearish. For the call side, show things like long buildup, short buildup, short covering, and long liquidation in a way that is easy to understand.

Keep it straightforward and readable, like a quick market dashboard. If needed, look up the current NSE data access details online and make sure the page still works with today’s site behavior. Also make it easy to switch from NIFTY to FINNIFTY if I want to use a different instrument later.