{"code":-1102,"msg":"Mandatory parameter 'timestamp' was not sent, was empty/null, or malformed."}

Question

I'm trying to change initial leverage on my account.

import time
import json
import urllib
import hmac, hashlib
import requests

from urllib.parse import urlparse, urlencode
from urllib.request import Request, urlopen

class Binance():

    methods = {
            #futures
            'futuresExchangeInfo': {'url': 'fapi/v1/exchangeInfo', 'method': 'GET', 'private': False, 'futures': True},
            'futuresKlines': {'url': 'fapi/v1/klines', 'method': 'GET', 'private': False, 'futures': True},
            'MarkPrice': {'url': '/fapi/v1/premiumIndex', 'method': 'GET', 'private': False, 'futures': True},
            'futuresCreateOrder':      {'url': 'fapi/v1/order', 'method': 'POST', 'private': True, 'futures': True},
            'QueryOrder':      {'url': 'fapi/v1/order', 'method': 'GET', 'private': True, 'futures': True},
            'ChangeLeverage': {'url': '/fapi/v1/leverage', 'method': 'POST', 'private':True, 'futures':True},
            'futuresAccount':      {'url': 'fapi/v2/account', 'method': 'GET', 'private': True, 'futures': True},
            'futuresBalance':      {'url': 'fapi/v2/balance', 'method': 'GET', 'private': True, 'futures': True},
            'futuresSymbolPriceTicker': {'url': 'fapi/v1/ticker/price', 'method': 'GET', 'private': True, 'futures': True},
            'futuresOrderInfo': {'url': 'fapi/v1/order', 'method': 'GET', 'private': True, 'futures': True},
            'futuresCancelOrder':      {'url': 'fapi/v1/order', 'method': 'DELETE', 'private': True, 'futures': True}
    }
    
    def __init__(self, API_KEY, API_SECRET):
        self.API_KEY = API_KEY
        self.API_SECRET = bytearray(API_SECRET, encoding='utf-8')
        self.shift_seconds = 0

    def __getattr__(self, name):
        def wrapper(*args, **kwargs):
            kwargs.update(command=name)
            return self.call_api(**kwargs)
        return wrapper

    def set_shift_seconds(self, seconds):
        self.shift_seconds = seconds
        
    def call_api(self, **kwargs):

        command = kwargs.pop('command')
        api_url = 'https://fapi.binance.com/' + self.methods[command]['url']
        #api_url = 'https://testnet.binancefuture.com:443/' + self.methods[command]['url']
        payload = kwargs
        headers = {}
        
        payload_str = urllib.parse.urlencode(payload)
        
        if self.methods[command]['private']:
            payload.update({'timestamp': int(time.time() + self.shift_seconds - 1)})
            payload_str = urllib.parse.urlencode(payload).encode('utf-8')
            sign = hmac.new(
                key=self.API_SECRET,
                msg=payload_str,
                digestmod=hashlib.sha256
            ).hexdigest()

            payload_str = payload_str.decode("utf-8") + "&signature="+str(sign) 
            headers = {"X-MBX-APIKEY": self.API_KEY}

        if self.methods[command]['method'] == 'GET':
            api_url += '?' + payload_str
        response = requests.request(method=self.methods[command]['method'], url=api_url, data="" if self.methods[command]['method'] == 'GET' else payload_str, headers=headers)
        if 'code' in response.text:
            print(response.text)
        return response.json()


bot = Binance(
    API_KEY='',
    API_SECRET=''
)

account=bot.futuresAccount()
cl=bot.ChangeLeverage(symbol='BTCUSDT',leverage=2)

When I send timestamp in data I get this error: {"code":-1102,"msg":"Mandatory parameter 'timestamp' was not sent, was empty/null, or malformed."}. futuresAccount() works fine, but not ChangeLeverage(). I can't figure out how to fix this problem.

ref: https://binance-docs.github.io/apidocs/futures/en/#change-initial-leverage-trade

Answer 1

time.time() will give you seconds from the epoch, Binance expects milliseconds.

So generally speaking it should be in the form of int(time.time()*1000).

https://binance-docs.github.io/apidocs/futures/en/#endpoint-security-type