Hi, I want to know whether I can access the Option chain data instantly to make auto trading in zerodha. Please let me know charges to use API services.
Kite API doesn't provide instant option chain data; Kite provides only WS connections with Rest API service to get basic parameters. To get option chain data, you have to build it at your end with a WS connection. Go through: FAQ
You can also depend on a library by @rakeshr Go through: Option Chain Stream