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

# WebSocket Interface API

> Learn WebSocket Interface API for AllTick WebSocket API, including connection setup, subscription messages, real-time quote streaming and request examples.

<CardGroup cols={2}>
  <Card title="Latest Trade Price Batch Subscription" href="/en/websocket/trade-subscription" />

  <Card title="Latest Order Book Subscription" href="/en/websocket/depth-subscription" />

  <Card title="Heartbeat" href="/en/websocket/heartbeat" />

  <Card title="Cancel Quote Subscription" href="/en/websocket/cancel-subscription" />

  <Card title="K-Line Push (Not Supported)" href="/en/websocket/kline-push-not-supported" />
</CardGroup>

<script src="/seo-keywords.js" />