NIFTY CONTINOUS FUTURES on API

I see that you have introduced NIFTY CONTINUOUS FUTURES charts on TV Charts. However, I would like to know if there’s a way to get the same instruments’ OHLCV with OI data through APIs.

Also, I have the same question about BANKNIFTY CONTINOUS FUTURES.

Please check this Expired Future Contracts | Upstox Developer API

Accessing expired contract data requires an Upstox Plus plan: Help Center

I don’t think that is an appropriate answer.

Since I believe I have the same question, can you tell if continuous futures contracts are available via the APIs at all?

The key here is whether or not there is a single instrument_key available for continuous futures contracts like NIFTY FUT 1!?