Understanding the Signature Query Parameter on Binance API

When attempting to access the User Data endpoint using the signature query parameter, it is essential to understand the concept of this feature. In this article, we will discuss what a signature query parameter is and how to implement it.

What is a signature query parameter?

A signature query parameter is a mechanism used in API requests that allows you to include additional data or information about your request. By specifying this parameter as part of the URL query string, you can pass sensitive or non-standard data that is not included in the body of a standard request.

In the case of the `User Data'' endpoint on Binance, the signature query parameter is used to retrieve user-specific data without revealing it through the standard API response.

How ​​​to use the signature query parameter

To use the signature query parameter with the "User Data" endpoint on Binance:

• Include the parameter in the URL: When creating a request to the endpoint, add thesig(signature) query parameter as part of the URL. The format is:

• Pass the signature value in the request body: If you do not need to pass any additional data, you can omit thesig` parameter from the request body.

Example Request:

Here is an example of a request that includes the query parameter “sig” and passes some standard data:

Implementation in your code

Here is an example of how to handle the signature query parameter in your code:

import requests
class BinanceUserDataAPI:
def __init__(self, base_url, api_key, api_secret):
self.base_url = base_url
self.api_key = api_key
self.api_secret = api_secret
def get_user_data(self, symbol, amount, timestamp, side):

Create a request URL using the signature query parameter
url = f"{self.base_url}/api/v3/spot/userData?sig={self.get_signature()}&"

Add additional parameters to the request URL
parameters = {
"symbol": symbol,
"amount": amount,
"timestamp": timestamp,
"page": page,
}
response = requests.get(url, params=params)
return response.json()
def get_signature(self):

Generate a signature based on your API key and secret

Replace them with your actual values
api_key = self.api_key
api_secret = self.api_secret
signature = f"{api_key}:{api_secret}"
return signature

Usage example:
binance_user_data_api = BinanceUserDataAPI(" "YOUR_API_KEY", "YOUR_API_SECRET")
symbol = "ETH"
amount = 1000.00
timestamp = 1643723903
page = "BID"
user_data_response = binance_user_data_api.get_user_data(symbol, amount, timestamp, page)
print(user_data_response)

Conclusion

The signature query parameter is a powerful feature of the Binance API that allows you to transmit sensitive or non-standard data without revealing it through the standard request response. By following these steps and implementing this mechanism in your code, you can confidently access the “User Data” endpoint on Binance.

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