You cannot change the leverage level if you have any open orders or a non zero
position.
- Endpoint:
wss://trade.qfex.com?api_key=YOUR_API_KEY - Authenticate within 1 minute of connecting.
Example Request
{
"type": "set_user_leverage",
"params": {
"symbol": "AAPL-USD",
"leverage": 20.0
}
}
symbol— the symbol to set the leverage forleverage— the leverage level to set
Sample Code
# Python (websocket-client)
import json, websocket
API_KEY = "YOUR_API_KEY"
def send(ws, obj): ws.send(json.dumps(obj))
def on_open(ws):
# Authenticate
# https://docs.qfex.com/websocket/channels/trade/authenticate#how-it-works
send(ws, {"type": "auth", "params": { "hmac": { "public_key": "qfex_pub_xxxxx", "nonce": "c0ffee...", "unix_ts": 1760545414, "signature": "5f2e..." }}})
# Set leverage
send(ws, {"type": "set_user_leverage", "params": {"symbol": "AAPL-USD", "leverage": 20.0}})
ws = websocket.WebSocketApp(
"wss://trade.qfex.com?api_key=YOUR_API_KEY",
on_open=on_open,
on_message=lambda _, m: print("Message:", m)
)
ws.run_forever()
// Node.js (ws)
import WebSocket from "ws";
const ws = new WebSocket("wss://trade.qfex.com?api_key=YOUR_API_KEY");
const API_KEY = "YOUR_API_KEY";
ws.on("open", () => {
ws.send(JSON.stringify({ type: "auth", params: { api_key: API_KEY } }));
ws.send(
JSON.stringify({
type: "set_user_leverage",
params: { symbol: "AAPL-USD", leverage: 20.0 },
})
);
});
ws.on("message", (msg) => console.log("Message:", msg.toString()));
// Go (gorilla/websocket)
package main
import (
"log"
"github.com/gorilla/websocket"
)
func mustWriteJSON(c *websocket.Conn, v any) {
if err := c.WriteJSON(v); err != nil { log.Fatal("write:", err) }
}
func main() {
c, _, err := websocket.DefaultDialer.Dial("wss://trade.qfex.com?api_key=YOUR_API_KEY", nil)
if err != nil { log.Fatal("dial:", err) }
defer c.Close()
// Authenticate
mustWriteJSON(c, map[string]any{
"type": "auth",
"params": map[string]any{"hmac": map[string]any{"public_key": "qfex_pub_xxxxx", "nonce": "c0ffee...", "unix_ts": 1760545414, "signature": "5f2e..."}}
})
// Set leverage
mustWriteJSON(c, map[string]any{
"type": "set_user_leverage",
"params": map[string]any{"symbol": "AAPL-USD", "leverage": 20.0},
})
}
// Java (OkHttp WebSocket)
import java.util.concurrent.TimeUnit;
import okhttp3.*;
public class GetUserTradesWs {
public static void main(String[] args) {
OkHttpClient client = new OkHttpClient.Builder()
.pingInterval(20, TimeUnit.SECONDS).build();
Request req = new Request.Builder()
.url("wss://trade.qfex.com?api_key=YOUR_API_KEY").build();
WebSocketListener li = new WebSocketListener() {
@Override public void onOpen(WebSocket ws, Response r) {
ws.send("{\"type\": \"auth\", \"params\": { \"hmac\": { \"public_key\": \"qfex_pub_xxxxx\", \"nonce\": \"c0ffee...\..\", \"unix_ts\": 1760545414, \"signature\": \"5f2e...\" }}}");
ws.send("{\"type\":\"set_user_leverage\",\"params\":{\"symbol\":\"AAPL-USD\",\"leverage\":20.0}}");
}
@Override public void onMessage(WebSocket ws, String text) {
System.out.println(text);
}
};
client.newWebSocket(req, li);
try { Thread.sleep(Long.MAX_VALUE); } catch (InterruptedException ignored) {}
}
}
Example Response
{ "ack_response": true }