> For the complete documentation index, see [llms.txt](https://www.xrdev.app/mixed-reality-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://www.xrdev.app/mixed-reality-docs/lessons/lesson-6/project/what-is-unitywebrequest.md).

# What is UnityWebRequest?

[**UnityWebRequest**](https://docs.unity3d.com/2018.4/Documentation/Manual/UnityWebRequest.html) provides a modular system for composing HTTP requests and handling HTTP responses. The primary goal of the UnityWebRequest system is to allow Unity games to interact with web browser back-ends. It also supports high-demand features such as chunked HTTP requests, streaming POST/PUT operations, and full control over HTTP headers and verbs.

The system consists of two layers:

* A [High-Level API](https://docs.unity3d.com/2018.4/Documentation/Manual/UnityWebRequest-HLAPI.html) (HLAPI) wraps the Low-Level API and provides a convenient interface for performing common operations
* A [Low-Level API](https://docs.unity3d.com/2018.4/Documentation/Manual/UnityWebRequest-LLAPI.html) (LLAPI) provides maximum flexibility for more advanced users


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