ebSocket Market Data Connection Issue - No Real-Time Quotes Received

1

Hi Tradovate community,

I’m experiencing an issue with the WebSocket market data connection. I can successfully connect and subscribe to market data, but I’m not receiving any real-time bid/ask quotes.

What’s Working:

  • :white_check_mark: WebSocket connection to wss://demo.tradovateapi.com/v1/websocket

  • :white_check_mark: Authorization with mdAccessToken (returns “o” frame)

  • :white_check_mark: Market data subscription (returns {“s”:200,“i”:1})

  • :white_check_mark: Receiving heartbeat frames (“h”)

What’s Not Working:

  • :cross_mark: No real-time bid/ask price updates

  • :cross_mark: Only receiving heartbeat frames, no market data frames

My Setup:

  • Account: Demo environment

  • hasMarketData: false in account settings

  • WebSocket subscription to “MNQU5” (Micro E-mini NASDAQ-100)

Code Implementation:

python

# WebSocket Connection and Authorization
ws_url = "wss://demo.tradovateapi.com/v1/websocket"
md_access_token = "your_md_access_token"

# Connect and authorize
websocket = await websockets.connect(ws_url)
auth_frame = f"authorize\n1\n\n{md_access_token}"
await websocket.send(auth_frame)

# Subscribe to market data
sub_frame = f"marketData/subscribe\n2\n\n{json.dumps(['MNQU5'])}"
await websocket.send(sub_frame)

# Listen for updates (only getting "h" frames, no market data)
async for message in websocket:
    if message.startswith('h'):
        print("Heartbeat received")  # This works
    elif message.startswith('a'):
        print("Market data received")  # This never happens

Questions:

  1. Is hasMarketData: false preventing real-time quotes even with WebSocket subscription?
  2. Do I need to upgrade my account to receive live market data?
  3. Is there a different subscription method I should be using?
  4. Are there specific market data plans required for real-time quotes?

Any help would be greatly appreciated!