OptionSymbol

Option Symbol

Endpoint URL

This API Function Returns Option Symbol Details based on Underlying and Offset

Local Host   :  POST http://127.0.0.1:5000/api/v1/optionsymbol
Ngrok Domain :  POST https://<your-ngrok-domain>.ngrok-free.app/api/v1/optionsymbol
Custom Domain:  POST https://<your-custom-domain>/api/v1/optionsymbol

Sample API Request (Index Underlying)

{
    "apikey": "eb51c74ed08ffc821fd5da90b55b7560a3a9e48fd58df01063225ecd7b98c993",
    "underlying": "NIFTY",
    "exchange": "NSE_INDEX",
    "expiry_date": "28OCT25",
    "offset": "ITM2",
    "option_type": "CE"
}

Sample API Response

{
    "status": "success",
    "symbol": "NIFTY28OCT2525850CE",
    "exchange": "NFO",
    "lotsize": 75,
    "tick_size": 0.05,
    "underlying_ltp": 25966.05
}

Sample API Request (Future as Underlying)

{
    "apikey": "eb51c74ed08ffc821fd5da90b55b7560a3a9e48fd58df01063225ecd7b98c993",
    "underlying": "NIFTY28OCT25FUT",
    "exchange": "NFO",
    "offset": "ITM2",
    "option_type": "CE"
}

Sample API Response

{
    "status": "success",
    "symbol": "NIFTY28OCT2525850CE",
    "exchange": "NFO",
    "lotsize": 75,
    "tick_size": 0.05,
    "underlying_ltp": 25966.05
}

Parameter Description

Parameters	Description	Mandatory/Optional	Default Value
apikey	App API key	Mandatory	-
strategy	Strategy name	Mandatory	-
underlying	Underlying symbol (NIFTY, BANKNIFTY, NIFTY28OCT25FUT)	Mandatory	-
exchange	Exchange code (NSE_INDEX, NSE, NFO, BSE_INDEX, BSE, BFO)	Mandatory	-
expiry_date	Expiry date in DDMMMYY format (e.g., 28OCT25)	Optional*	-
offset	Strike offset (ATM, ITM1-ITM50, OTM1-OTM50)	Mandatory	-
option_type	Option type (CE for Call, PE for Put)	Mandatory	-

*Note: expiry_date is optional if underlying includes expiry (e.g., NIFTY28OCT25FUT)

Response Parameters

Parameter	Description	Type
status	API response status (success/error)	string
symbol	Resolved option symbol	string
exchange	Exchange code where option is listed	string
lotsize	Lot size of the option contract	number
tick_size	Minimum price movement	number
underlying_ltp	Last Traded Price of underlying	number

Examples for Different Underlyings

NIFTY

{
    "apikey": "your_api_key",
    "underlying": "NIFTY",
    "exchange": "NSE_INDEX",
    "expiry_date": "18NOV25",
    "offset": "ATM",
    "option_type": "CE"
}

BANKNIFTY

{
    "apikey": "your_api_key",
    "underlying": "BANKNIFTY",
    "exchange": "NSE_INDEX",
    "expiry_date": "25NOV25",
    "offset": "OTM2",
    "option_type": "PE"
}

RELIANCE Equity

{
    "apikey": "your_api_key",
    "strategy": "equity_options",
    "underlying": "RELIANCE",
    "exchange": "NSE",
    "expiry_date": "28NOV24",
    "strike_int": 10,
    "offset": "ITM1",
    "option_type": "CE"
}

Offset Examples

For underlying LTP = 25966.05, strike_int = 50, ATM = 26000:

Offset	Option Type	Strike	Description
ATM	CE	26000	At-The-Money
ATM	PE	26000	At-The-Money
ITM1	CE	25950	In-The-Money -1
ITM2	CE	25900	In-The-Money -2
ITM1	PE	26050	In-The-Money +1
ITM2	PE	26100	In-The-Money +2
OTM1	CE	26050	Out-of-The-Money +1
OTM2	CE	26100	Out-of-The-Money +2
OTM1	PE	25950	Out-of-The-Money -1
OTM2	PE	25900	Out-of-The-Money -2

Error Response

{
    "status": "error",
    "message": "Option symbol NIFTY28OCT2527000CE not found in NFO. Symbol may not exist or master contract needs update."
}

Use Cases

1. Get ATM Option: Use "offset": "ATM" to get the current At-The-Money strike

2. Get OTM for Premium Collection: Use "offset": "OTM2" or higher for selling OTM options

3. Get ITM for Directional Trades: Use "offset": "ITM1" or "ITM2" for higher delta trades

4. Build Iron Condor: Fetch OTM1 and OTM3 strikes for both CE and PE

5. Verify Symbol Before Order: Check if option exists in master contract database