Glossary
Instrument
A tradable entity like stock, future, option, or index.
Exchange
Market venue/segment identifier like NSE, BSE, NFO.
Order
Request to buy/sell an instrument.
Trade (Fill)
Actual execution event generated from an order.
Position
Current net open quantity for an instrument.
Holding
Delivery inventory carried in account.
Product Type
How broker treats margin/holding (CNC, MIS, NRML).
Order Type
Execution style (MARKET, LIMIT, SL, SL_M).
Tick
Realtime market update from WebSocket.
Quote
REST snapshot of current market values.
Candle
OHLC bar for a time interval.
GTT
Trigger rule that places order when condition is met.
OCO
One-cancels-other: two trigger legs where one execution cancels the other.
Access Token
Session token required for authenticated broker API calls.
Auth Mode
How login is done (manual token vs auto flow where supported).
Stale Instrument Cache
Local symbol/token database is out of date.
Idempotency Tag
Client-side unique tag used to reduce duplicate order risk.