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

# Xbox services API reference (contents)

> 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 material for the Microsoft Game Development Kit (GDK).

## In this section

[httpClient](https://docs.xbox.com/reference/live/httpclient/atoc-httpclient.md)\
HTTPClient API reference material for the Microsoft Game Development Kit (GDK).

[XSAPI](https://docs.xbox.com/reference/live/xsapi-c/atoc-xsapi-c.md)\
XSAPI reference material for the Microsoft Game Development Kit (GDK).

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

[REST](https://docs.xbox.com/reference/live/rest/atoc-xboxlivews-reference.md)\
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](https://docs.xbox.com/services/xbox-services/fundamentals/live-xbl-overview.md)


## Related topics

- [API reference (contents)](https://docs.xbox.com/reference/gc-reference-toc.md)
- [Xbox services authentication (contents)](https://docs.xbox.com/services/xbox-services/fundamentals/s2s-auth-calls/service-authentication/live-service-authentication-nav.md)
- [Tools for Xbox services (contents)](https://docs.xbox.com/tools/tools-services/live-tools-nav.md)
- [Service calls to Xbox services (contents)](https://docs.xbox.com/services/xbox-services/fundamentals/s2s-auth-calls/s2s-calls/live-s2s-calls-nav.md)
- [Tools API reference (API contents)](https://docs.xbox.com/reference/tools/gc-reference-tools-toc.md)