> ## Documentation Index
> Fetch the complete documentation index at: https://developer.woox.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Mark price

### Topic: markprice@`{symbol}`

Push interval: 1s\
Subscribe to the mark price of the symbol.

<RequestExample>
  ```bash Subscribed messages theme={null}
  {
    "id": .....
    "cmd": "SUBSCRIBE",
    "params": ["markprice@PERP_ETH_USDT"]
  }
  ```
</RequestExample>

<ResponseExample>
  ```bash theme={null}
  {
      "topic": "markprice@PERP_ETH_USDT",
      "ts": 1618820361552,
      "data": {
          "s": "PERP_ETH_USDT",  // symbol
          "px": "3987.2",        // mark price
          "ts": 1618820361552    // timestamp at which the mark price was calculated
      }
  }
  ```
</ResponseExample>