The weekly contract details are missing in the instruments details provided (NFO 01FEB24) .
We’re in the process of investigating this. I’ll reach out to you once we have some updates.
@Aghil_Varghese, the instruments CSV file includes weekly contracts and within this file, there’s a column named “expiry”. You can filter the instruments by selecting those where the expiry is “2024-02-01”.
You can download the latest instrument file from our developer API documentation: Instruments | Upstox Developer API
Do let us know if this meets your requirements.