> ## 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.

# Interface Restriction Description

> This page summarizes interface restrictions for AllTick market data APIs, including HTTP and WebSocket rate limits, concurrent connection caps, response size constraints, and account-level limits, with links to error code docs, helping developers design request patterns that avoid throttling or rejections when pulling realtime data.

> **[HTTP Interface Restrictions](https://alltick.co/apis/apis/en/getting-started/http-interface-restrictions.md)**

> **[WebSocket Interface Restrictions](https://alltick.co/apis/apis/en/getting-started/websocket-interface-limitations.md)**

> **[Error Code Description](https://alltick.co/apis/apis/en/getting-started/error-code-description.md)**


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