> ## 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.

# EDS Common Headers

> EDS Common Headers

## Entertainment Discovery Services (EDS) Common Request Headers

| Header Name | Description | Required? | Notes |
| - | - | - | - |
| **x-xbl-contract-version** | EDS Service version | yes | 3.2 |
| **x-xbl-client-type** | Client Type header | yes | Speak to team to get your own Client Type . |
| **x-xbl-client-version** | Client Version | yes | Any non-empty string. |
| **x-xbl-parent-ig** | Impression guid | yes | Used to track request in logs and across other service calls. |
| **x-xbl-device-type** | Device Type | yes | Device that the client is representing . |
| **Accept** | Accept type | yes | XML or JSON. |
| **Authorization** | Auth Header | yes | |
| **x-xbl-autoSuggest-seed-text** | Auto suggest seed text | no | Used For BI and relevance |
| **x-xbl-search-term** | Search Term | no | |
| **x-xbl-input-method** | Input method used by user | no | Controller, Speech, Kinect . |
| **x-xbl-kinect-enabled** | Kinect enabled | no | Yes/no. |
| **x-xbl-speech-session-id** | Speech session ID | no | Whether session was initiated using speech. |
| **x-xbl-client-id** | Anonymous Client Id | no | Used for BI reporting and relevance. |
| **x-xbl-device-id** | Device ID | no | Used for BI reporting and relevance. |
| **x-xbl-user-agent** | Client user agent | no | Used for BI. "\<name>/\<version> (\<OS version>; \<platform>; \<capability>; \<manufacture>; \<model>)". |
| **x-xbl-parent-ig** | Previous Impression Guid for "Chained" calls | no (but highly recommended) | Important for BI relevance. For example, a Browse call's IG is the parent IG for a following up detail call. |
| **delid** | Delegate Identity | no | Used by internal services to work on behalf of a user. |

## Common Response Headers

\| Header Name| Description| Required?| Notes|
\| --- | --- | --- | --- | --- | --- | --- | --- |
\| **Cache**| Cache Headers| yes| See [[https://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.9](https://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.9)](https://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.9).|
\| **x-xbl-errors**| Errors| no| List of errors from various data providers.|
\| **x-xbl-traceid**| Trace Id from logs| yes| Used to trace back the request specific logs.|
\| **x-server-name**| Obfuscated name of the server that handles the request.| yes| Used for internal debugging.|

## See also

##### Parent

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

##### Further Information

[Marketplace URIs](https://docs.xbox.com/reference/live/rest/uri/marketplace/atoc-reference-marketplace.md)


## Related topics

- [Additional Reference](https://docs.xbox.com/reference/live/rest/additional/atoc-xboxlivews-reference-additional.md)
- [/media/{marketplaceId}/browse](https://docs.xbox.com/reference/live/rest/uri/marketplace/uri-medialocalebrowse.md)
- [/media/{marketplaceId}/contentRating](https://docs.xbox.com/reference/live/rest/uri/marketplace/uri-medialocalecontentrating.md)
- [/media/{marketplaceId}/details](https://docs.xbox.com/reference/live/rest/uri/marketplace/uri-medialocaledetails.md)
- [/media/{marketplaceId}/fields](https://docs.xbox.com/reference/live/rest/uri/marketplace/uri-medialocalefields.md)