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

# Channel and limit reference

> Channels, per-namespace history, and connection limits for the SX Bet WebSocket API.

|           |                                                              |
| --------- | ------------------------------------------------------------ |
| Endpoint  | `wss://realtime.sx.bet/connection/websocket`                 |
| Transport | **WebSocket only.** There is no public HTTP API for realtime |
| Server    | Centrifugo v6.9.1                                            |

## The channels

**Public** — subscribe with any valid connection:

| Channel                                                                       | Carries                                       |
| ----------------------------------------------------------------------------- | --------------------------------------------- |
| [`orderbook_v3:{marketHash}`](/api-reference/channel-orderbook-v3)            | The full aggregated book for one market       |
| [`orderbook_v3_event:{eventId}`](/api-reference/channel-orderbook-v3-event)   | The same bodies, for every market in an event |
| [`best_odds_v3:global`](/api-reference/channel-best-odds-v3)                  | Top-of-book changes across all markets        |
| [`recent_trades_v3:global`](/api-reference/channel-recent-trades-v3)          | The anonymized public tape                    |
| [`markets:global`](/api-reference/channel-markets)                            | Market create and update                      |
| [`main_line:global`](/api-reference/channel-line-changes)                     | Main-line changes                             |
| [`fixtures:global`](/api-reference/channel-fixtures) · `fixtures:live_scores` | Fixture metadata and live scores              |
| [`parlay_markets:global`](/api-reference/channel-parlay-requests)             | Parlay quote requests                         |

**Account** — scoped to you, and only reachable with a matching token:

| Channel                                                            | Carries                  |
| ------------------------------------------------------------------ | ------------------------ |
| [`account:orders_v3_#{address}`](/api-reference/channel-orders-v3) | Your order state changes |
| [`account:trades_v3_#{address}`](/api-reference/channel-trades-v3) | Your bets                |
| [`account:fills_v3_#{address}`](/api-reference/channel-fills-v3)   | Your individual matches  |

## History and recovery, per namespace

The namespace is the part of the channel name before the colon, and it decides everything about what
a reconnect can recover.

| Namespace                         | History  | Retention window | Client `history()` |
| --------------------------------- | -------- | ---------------- | ------------------ |
| `orderbook_v3`                    | **1**    | **6 h**          | **No**             |
| `orderbook_v3_event`              | 100      | 5 min            | Yes                |
| `account`                         | 100      | 5 min            | Yes                |
| `recent_trades_v3`                | 100      | 5 min            | Yes                |
| `markets`                         | 1,000    | 5 min            | Yes                |
| `main_line`                       | 500      | 5 min            | Yes                |
| `fixtures`                        | 100      | 5 min            | Yes                |
| `best_odds_v3` · `parlay_markets` | **None** | —                | —                  |

<Note>
  History is bounded by **both** the message limit and the retention window, whichever is reached
  first. A publication is only recoverable while it is still within the retention window **and** has
  not been pushed out by newer messages once the limit is hit.
</Note>

## Limits

| Parameter                                | Value      |
| ---------------------------------------- | ---------- |
| Max channel subscriptions per connection | 512        |
| Max history items returned per request   | 1,000      |
| Max messages recoverable per reconnect   | 1,000      |
| Ping interval                            | 30 seconds |
| Pong timeout                             | 8 seconds  |
| Outbound queue limit                     | 1 MB       |