Max Pain

API for retrieving the Max Pain strike price for an underlying asset on a given expiry and date. It accepts the instrument key, expiry, date, and bucket interval, and returns the max pain level for the requested date along with spot price insights at each interval.

Request

curl --location 'https://api.upstox.com/v2/market/max-pain?instrument_key=NSE_INDEX%7CNifty%2050&expiry=2026-05-29&date=2026-05-07&bucket_interval=60' \
--header 'Content-Type: application/json' \
--header 'Accept: application/json' \
--header 'Authorization: Bearer {your_access_token}'

For additional samples in various languages, please refer to the Sample code section on this page.

Query Parameters

Name	Required	Description
instrument_key	true	Underlying asset instrument key. For the regex pattern applicable to this field, see the Field Pattern Appendix.
expiry	true	Expiry date of the option contract in YYYY-MM-DD format.
date	true	Date for which Max Pain data is required, in YYYY-MM-DD format.
bucket_interval	true	Bucket interval in minutes for intraday insights.

The bucket_interval parameter controls the granularity of the intraday insights array — it defines the gap in minutes between consecutive data points. For example, bucket_interval=60 returns one data point per hour starting from market open (09:15, 10:15, 11:15, ..., 15:15).

Responses

• 200
• 4XX

---

Response body

{
    "status": "success",
    "data": {
        "instrument_key": "NSE_INDEX|Nifty 50",
        "expiry_date": "19-05-2026",
        "max_pain": 24050.0,
        "spot_closing_price": 24044.35,
        "insights": [
            {
                "max_pain": 24250.0,
                "spot_price": 23955.0,
                "time": "09:15"
            },
            {
                "max_pain": 24100.0,
                "spot_price": 23829.65,
                "time": "10:15"
            },
            {
                "max_pain": 24000.0,
                "spot_price": 23800.0,
                "time": "11:15"
            },
            {
                "max_pain": 24000.0,
                "spot_price": 23905.75,
                "time": "12:15"
            },
            {
                "max_pain": 24000.0,
                "spot_price": 23950.65,
                "time": "13:15"
            },
            {
                "max_pain": 24050.0,
                "spot_price": 24028.5,
                "time": "14:15"
            },
            {
                "max_pain": 24050.0,
                "spot_price": 23988.3,
                "time": "15:15"
            }
        ]
    }
}

Name	Type	Description
status	string	Outcome of the request. Typically success for successful operations.
data	object	Max Pain data object.
data.instrument_key	string	Underlying asset instrument key.
data.expiry_date	string	Expiry date of the option contract.
data.max_pain	number	Max Pain strike level for the requested date.
data.spot_closing_price	number	Closing spot price of the underlying asset.
data.insights	array	Intraday Max Pain data points at the requested bucket interval.
data.insights[].max_pain	number	Max Pain strike at this interval.
data.insights[].spot_price	number	Spot price at this interval.
data.insights[].time	string	Time of the interval in HH:mm format.

Error codes

Error code	Description
UDAPI100011	Invalid instrument_key — The provided instrument_key is invalid or not found.
UDAPI1202	Invalid expiry date format — The expiry parameter must be in YYYY-MM-DD format.
UDAPI1203	Invalid date format — The date parameter must be in YYYY-MM-DD format.
UDAPI1205	Invalid bucket_interval — The bucket_interval value is not accepted.

Sample Code

Get Max Pain data

Curl

curl --location 'https://api.upstox.com/v2/market/max-pain?instrument_key=NSE_INDEX%7CNifty%2050&expiry=2026-05-29&date=2026-05-07&bucket_interval=60' \
--header 'Content-Type: application/json' \
--header 'Accept: application/json' \
--header 'Authorization: Bearer {your_access_token}'

Python

import requests

url = 'https://api.upstox.com/v2/market/max-pain'
params = {
    'instrument_key': 'NSE_INDEX|Nifty 50',
    'expiry': '2026-05-29',
    'date': '2026-05-07',
    'bucket_interval': 60
}
headers = {
    'Content-Type': 'application/json',
    'Accept': 'application/json',
    'Authorization': 'Bearer {your_access_token}'
}

response = requests.get(url, params=params, headers=headers)
print(response.text)

Node.js

const axios = require('axios');

const url = 'https://api.upstox.com/v2/market/max-pain';
const params = {
  instrument_key: 'NSE_INDEX|Nifty 50',
  expiry: '2026-05-29',
  date: '2026-05-07',
  bucket_interval: 60
};
const headers = {
  'Content-Type': 'application/json',
  'Accept': 'application/json',
  'Authorization': 'Bearer {your_access_token}'
};

axios.get(url, { params, headers })
  .then(response => console.log(response.data))
  .catch(error => console.error(error));

Java

import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;

public class Main {
    public static void main(String[] args) throws Exception {
        String url = "https://api.upstox.com/v2/market/max-pain"
            + "?instrument_key=NSE_INDEX%7CNifty%2050"
            + "&expiry=2026-05-29"
            + "&date=2026-05-07"
            + "&bucket_interval=60";

        HttpClient client = HttpClient.newHttpClient();
        HttpRequest request = HttpRequest.newBuilder()
            .uri(URI.create(url))
            .header("Content-Type", "application/json")
            .header("Accept", "application/json")
            .header("Authorization", "Bearer {your_access_token}")
            .build();

        HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());
        System.out.println(response.body());
    }
}

PHP

<?php

$url = 'https://api.upstox.com/v2/market/max-pain?'
    . http_build_query([
        'instrument_key' => 'NSE_INDEX|Nifty 50',
        'expiry'         => '2026-05-29',
        'date'           => '2026-05-07',
        'bucket_interval' => 60,
    ]);

$ch = curl_init($url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, [
    'Content-Type: application/json',
    'Accept: application/json',
    'Authorization: Bearer {your_access_token}',
]);

$response = curl_exec($ch);
if (curl_errno($ch)) {
    echo 'Curl error: ' . curl_error($ch);
}
curl_close($ch);
echo $response;
?>

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