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

# Orderbook

> Subscribe to full depth-100 orderbook snapshots for a symbol via WebSocket, pushed every second.

`{symbol}@orderbook` depth 100 push every 1s

```json theme={null}
{
  "id": "clientID2",
  "topic": "PERP_WOO_USDC@orderbook",
  "event": "subscribe"
}
```

**Parameters**

| Name          | Type   | Required | Description           |
| ------------- | ------ | -------- | --------------------- |
| id            | string | Y        | id generate by client |
| event         | string | Y        | subscribe/unsubscribe |
| topic         | string | Y        | `{symbol}@orderbook`  |
| params.symbol | string | Y        | `{symbol}`            |

<RequestExample>
  ```json theme={null}
  {
      "id": "clientID2",
      "event": "subscribe",
      "success": true,
      "ts": 1609924478533
  }
  ```
</RequestExample>

<ResponseExample>
  ```json theme={null}
  {
      "topic": "PERP_WOO_USDC@orderbook",
      "ts": 1614152140945,
      "data": {
          "symbol": "PERP_WOO_USDC",
          "asks": [
              [
                  0.31075,
                  2379.63
              ],
              [
                  0.31076,
                  4818.76
              ],
              [
                  0.31078,
                  8496.1
              ],
              ...
          ],
          "bids": [
              [
                  0.30891,
                  2469.98
              ],
              [
                  0.3089,
                  482.5
              ],
              [
                  0.30877,
                  20
              ],
              ...
          ]
      }
  }
  ```
</ResponseExample>