Cancel Order

Description

Cancel an active order.

HTTP Request

DELETE /fapi/v1/order (HMAC SHA256)

Request Parameters

Name	Type	Required	Description
symbol	STRING	YES	Trading pair
orderId	STRING	NO	System order ID (UUID)
origClientOrderId	STRING	NO	User-defined order ID
timestamp	LONG	YES	Timestamp

Response Example

{
    "orderId": "3fa42833-9508-4061-8d80-b68563dcd521",
    "symbol": "BTCUSDT",
    "status": "CANCELED",
    "clientOrderId": "testOrder2",
    "price": "60000",
    "avgPrice": "0",
    "origQty": "0.01",
    "executedQty": "0",
    "cumQuote": "0",
    "timeInForce": "GTC",
    "type": "LIMIT",
    "reduceOnly": false,
    "side": "BUY",
    "positionSide": "BOTH",
    "stopPrice": "0",
    "workingType": "CONTRACT_PRICE",
    "priceProtect": false,
    "origType": "LIMIT",
    "updateTime": 1774330265238,
    "time": 1774330191022
}

Either orderId or origClientOrderId must be sent.

Notes

• Any order that is not cancellable returns -2011. This covers every variant: the order is already in a terminal state (FILLED / CANCELED / REJECTED), the trigger has already fired or expired, or the order is no longer present in the matching engine (raced with a fill). An orderId / origClientOrderId that doesn't resolve to any order returns -2013.
• If the order is itself a trigger order (STOP* / TAKE_PROFIT* placed via POST /fapi/v1/order), the cancel is forwarded to the trigger service. There is no cascade-cancel — cancelling a regular order never cancels any other order.
• Cancellation is not a single transaction: the matching-engine removal, the order-status update, and the margin release are separate steps.
• Frozen margin attributable to the cancelled order's unfilled remainder is released back to the available balance.

Code Examples

cURL

API_KEY="your_api_key"
API_SECRET="your_api_secret"
TIMESTAMP=$(date +%s%3N)
QUERY_STRING="symbol=BTCUSDT&orderId=3fa42833-9508-4061-8d80-b68563dcd521&timestamp=${TIMESTAMP}"
SIGNATURE=$(echo -n "${QUERY_STRING}" | openssl dgst -sha256 -hmac "${API_SECRET}" | awk '{print $2}')

curl -s -X DELETE \
  -H "X-MBX-APIKEY: ${API_KEY}" \
  "https://api.prex.world/fapi/v1/order?${QUERY_STRING}&signature=${SIGNATURE}"

Python

import time, hmac, hashlib, requests

API_KEY = "your_api_key"
API_SECRET = "your_api_secret"
BASE_URL = "https://api.prex.world"

def sign(params: str) -> str:
    return hmac.new(API_SECRET.encode(), params.encode(), hashlib.sha256).hexdigest()

def signed_delete(path, params={}):
    params["timestamp"] = int(time.time() * 1000)
    qs = "&".join(f"{k}={v}" for k, v in params.items())
    params["signature"] = sign(qs)
    return requests.delete(f"{BASE_URL}{path}", params=params, headers={"X-MBX-APIKEY": API_KEY})

# Cancel an order by orderId
resp = signed_delete("/fapi/v1/order", params={
    "symbol": "BTCUSDT",
    "orderId": "3fa42833-9508-4061-8d80-b68563dcd521"
})
print(resp.json())