import requests
import json
import hmac
import hashlib
import time

API endpoint

url = "https://fapi.binance.com/fapi/v1/order"

API key and secret

api_key = ""
api_secret = ""

Request parameters

symbol = "BTCUSDT"
side = "SELL"
type = "MARKET"
notional_value = 30 # Notional value in USD
timestamp = int(time.time() * 1000)
recvWindow = 5000

Fetch last traded price

ticker_url = "https://fapi.binance.com/fapi/v1/ticker/price"
ticker_payload = {
"symbol": symbol
}
ticker_response = requests.get(ticker_url, params=ticker_payload)
last_price = float(ticker_response.json()["price"])

Calculate quantity

quantity = notional_value / last_price

Create the timestamp

timestamp = int(time.time() * 1000)

Create the signature

message = f"{timestamp}{recvWindow}".encode('utf-8')
signature = hmac.new(api_secret.encode('utf-8'), message, hashlib.sha256).hexdigest()

Create the request payload

payload = {
"symbol": symbol,
"side": side,
"type": type,
"quantity": quantity,
"timestamp": timestamp,
"recvWindow": recvWindow,
"signature": signature
}

Send the request

response = requests.post(url, headers={"X-MBX-APIKEY": api_key}, json=payload)

Print the response

print(response.json())