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

# XBOX services API reference

> XBOX services API reference for the Microsoft Game Development Kit (GDK), covering XSAPI, httpClient, and XBOX Live HRESULT error codes for GDK titles.

# XBOX services API reference

XBOX services API reference material for the Microsoft Game Development Kit (GDK).

## In this section

[httpClient](/reference/live/httpclient/atoc-httpclient)\
HTTPClient API reference material for the Microsoft Game Development Kit (GDK).

[XSAPI](/reference/live/xsapi-c/atoc-xsapi-c)\
XSAPI reference material for the Microsoft Game Development Kit (GDK).

[XBOX Live HRESULT Error Codes](/reference/live/xbl-hresult-error-codes)\
A list of all the HRESULT error codes used by XBOX Live.

[REST](/reference/live/rest/atoc-xboxlivews-reference)\
Services for managing games and player information. Use the **Xbox.Services** API (XSAPI)whenever possible. Use the RESTful interface for newer methods that have not been added to **Xbox.Services** yet.

## See also

[XBOX services overview](/services/xbox-services/fundamentals/live-xbl-overview)


## Related topics

- [API reference](/reference/gc-reference-toc.md)
- [XBOX services RESTful reference](/reference/live/rest/atoc-xboxlivews-reference.md)
- [XBOX services API overview](/services/xbox-services/fundamentals/xbox-services-api/live-introduction-to-xbox-live-apis.md)
- [XBOX services API](/services/xbox-services/fundamentals/xbox-services-api/index.md)
- [XBOX services authentication](/services/xbox-services/fundamentals/s2s-auth-calls/service-authentication/live-xbox-live-authentication.md)