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Trade API (64)

Where do I get the scrip master, and how often should I download it?

It's a public CSV at https://assets.SAHI.com/external/instruments.csv
No login, token or headers are needed.

The file is refreshed every day before 07:00 IST with new listings, new contracts and that day's expiries. Download it once each morning before you start trading, and don't reuse yesterday's copy.