BinanceChat

Notifying Binance P2P Sellers About Payment Transfers Using Python WebSocket Automation

In the realm of crypto trading automation, seamless communication with your counterparty is still essential. On Binance P2P, a common task is to inform the seller that payment has been sent. This can be handled automatically using WebSocket and Python — no manual actions required.

Below, we’ll explore how to retrieve chat credentials, connect to Binance’s WebSocket service, and programmatically send a message to the P2P chat notifying the seller of a payment. This approach is particularly relevant for those developing P2P bots or streamlining trade processing workflows.

✍️ This approach is based on practical examples and methodologies circulating among active developers in the crypto automation space.

🔐 Getting Chat Credentials for WebSocket
To begin, you’ll need to fetch the chatWssUrl, listenKey, and listenToken, which are required to connect to Binance's chat WebSocket.
⚠️ Code may look unformatted — Binance editor doesn’t support code blocks.
📦 The retrieveChatCredential Function
def retrieveChatCredential(): # You Api Key on binance api_key = "11111" # You Apy Secret on binance secret_key = "11111" base_url = "https://api.binance.com" endpoint = "/sapi/v1/c2c/chat/retrieveChatCredential" timestamp = int(time.time() * 1000) query_string = f"timestamp={timestamp}" signature = hmac.new( secret_key.encode('utf-8'), query_string.encode('utf-8'), hashlib.sha256 ).hexdigest() headers = { "clientType": "web", "X-MBX-APIKEY": api_key } url = f"{base_url}{endpoint}?{query_string}&signature={signature}" response = requests.get(url, headers=headers) if response.status_code == 200: return response.json() else: print("Error:", response.status_code, response.text) return None

Once the credentials are obtained:

chatWssUrl = res_detail['data']['chatWssUrl']
listenKey = res_detail['data']['listenKey']
listenToken = res_detail['data']['listenToken']
chat_wss_url = f"{chatWssUrl}/{listenKey}?token={listenToken}&clientType=web"

🔌 Establishing the WebSocket Connection

def connect_to_websocket():
global reconnect_attempts, ws
reconnect_attempts = 0
ws = websocket.WebSocketApp(
chat_wss_url,
on_open=on_open,
on_message=on_message,
on_error=on_error,
on_close=on_close
)
ws.run_forever()

📡 WebSocket Event Handlers
on_open – triggered when the connection is established
on_message – triggered on message receipt
on_error – handles errors during connection
on_close – reconnects on disconnection
✉️ Sending a Chat Message

When you’re ready to notify the seller after sending funds:

send_message(content, order_no):
if ws_connection:
timestamp = int(time.time() * 1000)
message_uuid = generate_uuid()

response_message = {
"type": "text",
"uuid": message_uuid,
"orderNo": order_no,
"content": content,
"self": True,
"clientType": "web",
"createTime": timestamp,
"sendStatus": 0
}

try:
ws_connection.send(json.dumps(response_message))
print(f"Message sent to chat: {content}")
except Exception as e:
print(f"Message sending error: {str(e)}")

Example usage:

send_message("Hello, the payment has been made. Please release the crypto.", "789456123ABCDEF")

🧩 Full Working Example
ReadMore: https://py-dev.top/blog/crypto-exchange-development/automatic-message-sending-to-binance-p2p-chat-via-websocket-using-python
#BinanceChat #websocket