Everything we know about automating NIFTY and SENSEX options

Your broker session has expired and orders are failing. The fix takes under a minute, and this page covers it first, then how to tell it apart from an IP problem.

The order of operations matters, because doing it in the wrong sequence leaves a position open with no strategy managing it. A sequence that avoids that.

What broker API access actually provides, the four credentials involved and how long each lasts, what brokers typically charge, and the limits that affect multi-leg strategies.

The end-to-end connection process that applies to every supported broker — creating an API app, whitelisting your address, adding credentials, logging in and validating, with the failure points at each step.

Margin shortfall, expired session, wrong IP, frozen quantity, blocked market orders — the real reasons an algo order gets rejected in India, how to tell them apart, and what to do about each.

Indian broker API sessions expire every day by design. Why that is, what the morning login window looks like, how to tell a token problem from an IP problem, and how to stop a forgotten login costing you a trading day.

Which Indian brokers support API-based algo trading, what to actually compare between them, how to connect one, and the requirements that apply whichever you pick.