I want to access live NIFTY and BANKNIFTY option chain data, including CE/PE Open Interest (OI), Change in OI, Volume, and LTP.

My setup:

• Device: Android mobile
• Internet: Airtel mobile data
• Programming language: Python
• Output: Microsoft Excel
• Purpose: Market data only; I do not need to place or modify orders.

When I try to create an API app, the form asks for Primary Static IP, Redirect URL, and Postback URL.

Could you please clarify:

1. Is a Primary Static IP mandatory for market-data-only API access?
2. Can I use SmartAPI with Airtel mobile data, which may have a changing IP address?
3. What should I enter for Redirect URL and Postback URL for a Python market-data application?
4. Is live NIFTY and BANKNIFTY option-chain data available through the official API?

Please guide me on the correct setup.

Thank you.