> ## 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 authentication (contents)

> Contents index for XBOX Live authentication topics: XSTS security tokens, title service auth, website sign-in, and background on token flows.

This section provides information about XBOX services authentication and tokens.

## In this section

[XBOX services authentication](https://docs.xbox.com/services/xbox-services/fundamentals/s2s-auth-calls/service-authentication/live-xbox-live-authentication.md)
Provides background information about XBOX services call authentication.

[XBOX services authentication for title services](https://docs.xbox.com/services/xbox-services/fundamentals/s2s-auth-calls/service-authentication/live-title-service-authentication.md)
Describes how to use XBOX services authentication with a custom title service.

[XBOX services security tokens](https://docs.xbox.com/services/xbox-services/fundamentals/s2s-auth-calls/service-authentication/security-tokens/live-security-token-nav.md)
Provides information about XBOX Live security tokens.

[XBOX services sign-in for title websites](https://docs.xbox.com/services/xbox-services/fundamentals/s2s-auth-calls/service-authentication/live-website-authentication.md)
Supporting XBOX services sign-in on custom title websites.


## Related topics

- [Service authentication](https://docs.xbox.com/services/xbox-services/fundamentals/s2s-auth-calls/service-authentication/index.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 for Xbox services (contents)](https://docs.xbox.com/tools/tools-services/live-tools-nav.md)
- [Xbox services authentication](https://docs.xbox.com/services/xbox-services/fundamentals/s2s-auth-calls/service-authentication/live-xbox-live-authentication.md)
- [Authentication and S2S (contents)](https://docs.xbox.com/services/xbox-services/fundamentals/s2s-auth-calls/live-s2s-auth-calls-nav.md)