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POST
/
user
/
leverage
Set User Leverage
curl --request POST \
  --url https://api.qfex.com/user/leverage \
  --header 'Content-Type: application/json' \
  --header 'x-qfex-hmac-signature: <api-key>' \
  --header 'x-qfex-nonce: <api-key>' \
  --header 'x-qfex-public-key: <api-key>' \
  --header 'x-qfex-timestamp: <api-key>' \
  --data '
{
  "leverage": 123,
  "symbol": "<string>"
}
'
import requests

url = "https://api.qfex.com/user/leverage"

payload = {
    "leverage": 123,
    "symbol": "<string>"
}
headers = {
    "x-qfex-hmac-signature": "<api-key>",
    "x-qfex-nonce": "<api-key>",
    "x-qfex-public-key": "<api-key>",
    "x-qfex-timestamp": "<api-key>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)
const options = {
  method: 'POST',
  headers: {
    'x-qfex-hmac-signature': '<api-key>',
    'x-qfex-nonce': '<api-key>',
    'x-qfex-public-key': '<api-key>',
    'x-qfex-timestamp': '<api-key>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({leverage: 123, symbol: '<string>'})
};

fetch('https://api.qfex.com/user/leverage', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));
<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.qfex.com/user/leverage",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'leverage' => 123,
    'symbol' => '<string>'
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "x-qfex-hmac-signature: <api-key>",
    "x-qfex-nonce: <api-key>",
    "x-qfex-public-key: <api-key>",
    "x-qfex-timestamp: <api-key>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}
package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.qfex.com/user/leverage"

	payload := strings.NewReader("{\n  \"leverage\": 123,\n  \"symbol\": \"<string>\"\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("x-qfex-hmac-signature", "<api-key>")
	req.Header.Add("x-qfex-nonce", "<api-key>")
	req.Header.Add("x-qfex-public-key", "<api-key>")
	req.Header.Add("x-qfex-timestamp", "<api-key>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}
HttpResponse<String> response = Unirest.post("https://api.qfex.com/user/leverage")
  .header("x-qfex-hmac-signature", "<api-key>")
  .header("x-qfex-nonce", "<api-key>")
  .header("x-qfex-public-key", "<api-key>")
  .header("x-qfex-timestamp", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"leverage\": 123,\n  \"symbol\": \"<string>\"\n}")
  .asString();
require 'uri'
require 'net/http'

url = URI("https://api.qfex.com/user/leverage")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["x-qfex-hmac-signature"] = '<api-key>'
request["x-qfex-nonce"] = '<api-key>'
request["x-qfex-public-key"] = '<api-key>'
request["x-qfex-timestamp"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"leverage\": 123,\n  \"symbol\": \"<string>\"\n}"

response = http.request(request)
puts response.read_body
{
  "leverage": 123,
  "$schema": "<string>"
}
{
  "$schema": "<string>",
  "detail": "<string>",
  "errors": [
    {
      "location": "<string>",
      "message": "<string>",
      "value": "<unknown>"
    }
  ],
  "instance": "<string>",
  "status": 123,
  "title": "<string>",
  "type": "about:blank"
}

Authorizations

​
x-qfex-hmac-signature
string
header
required

HMAC-SHA256 signature (hex-encoded).

​
x-qfex-nonce
string
header
required

Unique request nonce (hex encoded, max 100 characters).

​
x-qfex-public-key
string
header
required

QFEX API Authentication requires these headers:

  • x-qfex-public-key: Your public API key
  • x-qfex-hmac-signature: HMAC signature of the request (hex encoded)
  • x-qfex-nonce: Unique nonce for the request (hex encoded, max 100 characters)
  • x-qfex-timestamp: Unix timestamp of the request

These four are required. Optionally send x-qfex-requested-account-id (UUID) to act as a subaccount; see Signature Generation below.

Signature Generation:

  1. Generate a cryptographically secure random nonce (hex encoded, max 100 characters) and capture the current Unix timestamp.
  2. Build the string ${nonce}:${unix_ts} and compute an HMAC-SHA256 using your secret key.
  3. Hex-encode the HMAC result to get the signature.
  4. Send the required auth headers below. The nonce must be unique within a 15 minute window.

Important: The signature itself must be hex-encoded before being sent in the x-qfex-hmac-signature header.

Optional header: x-qfex-requested-account-id (UUID) selects a subaccount; omit it to use the primary account.

​
x-qfex-timestamp
string
header
required

Unix timestamp (seconds since epoch).

Body

application/json
​
leverage
number<float>
required
​
symbol
string
required

Response

OK

​
leverage
number<float>
required
​
$schema
string<uri>
read-only

A URL to the JSON Schema for this object.

Example:

"https://api.qfex.com/schemas/SetUserLeverageResponseBody.json"