> ## 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.

# Standard HTTP Request and Response Headers

> Standard HTTP Request and Response Headers

## Request Headers

The following table lists the standard HTTP headers used when making XBOX Live Services requests.

| Header | Value | Description |
| - | - | - |
| x-xbl-contract-version | 1 | API contract version. Required on all XBOX Live Services requests. |
| Authorization | STSTokenString | STS authentication token. The value for this header is retrieved from the **GetTokenAndSignatureResult.Token** property. |
| Content-Type | application/xml, application/json, multipart/form-data or application/x-www-form-urlencoded | Specifies the type of content being submitted with a request. |
| Content-Length | Integer value | Specifies the length of the data being submitted in a POST request. |
| Accept-Language | String | Specifies how to localize any strings returned. See [Advanced XBOX 360 Programming](https://msdn.microsoft.com/library/bb975829.aspx) for a list of valid language/locale combinations. |

## Response Headers

The following table lists the standard HTTP header used in XBOX Live Services responses.

\| Header| Value| Description|
\| --- | --- | --- | --- | --- | --- |
\| Content-Type| application/xml, application/json| Specifies the type of content being returned.|
\| Content-Length| Integer value| Specifies the length of the data being returned.|

## See also

##### Parent

[Additional Reference](https://docs.xbox.com/reference/live/rest/additional/atoc-xboxlivews-reference-additional.md)


## Related topics

- [Additional Reference](https://docs.xbox.com/reference/live/rest/additional/atoc-xboxlivews-reference-additional.md)
- [Standard HTTP status codes](https://docs.xbox.com/reference/live/rest/additional/httpstatuscodes.md)
- [GET (/users/{ownerId}/summary)](https://docs.xbox.com/reference/live/rest/uri/people/uri-usersowneridsummaryget.md)
- [GET (/users/{ownerId}/people/{targetid})](https://docs.xbox.com/reference/live/rest/uri/people/uri-usersowneridpeopletargetidget.md)
- [POST (/users/{ownerId}/people/xuids)](https://docs.xbox.com/reference/live/rest/uri/people/uri-usersowneridpeoplexuidspost.md)