> ## Documentation Index
> Fetch the complete documentation index at: https://alltick.co/apis/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.

> **[Latest Trade Price Batch Subscription](https://alltick.co/apis/apis/en/websocket/trade-subscription.md)**

> **[Latest Order Book Subscription](https://alltick.co/apis/apis/en/websocket/depth-subscription.md)**

> **[Heartbeat](https://alltick.co/apis/apis/en/websocket/heartbeat.md)**

> **[Cancel Quote Subscription](https://alltick.co/apis/apis/en/websocket/cancel-subscription.md)**

> **[K-Line Push (Not Supported)](https://alltick.co/apis/apis/en/websocket/kline-push-not-supported.md)**


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