> ## 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.

# EDS Common Headers

> EDS Common Headers

# EDS Common Headers

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## Entertainment Discovery Services (EDS) Common Request Headers

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

## Common Response Headers

\| Header Name| Description| Required?| Notes|
\| --- | --- | --- | --- | --- | --- | --- | --- |
\| <b>Cache</b>| Cache Headers| yes| See <a href="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)</a>.|
\| <b>x-xbl-errors</b>| Errors| no| List of errors from various data providers.|
\| <b>x-xbl-traceid</b>| Trace Id from logs| yes| Used to trace back the request specific logs.|
\| <b>x-server-name</b>| Obfuscated name of the server that handles the request.| yes| Used for internal debugging.|

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## See also

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##### Parent

[Additional Reference](/reference/live/rest/additional/atoc-xboxlivews-reference-additional)

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##### Further Information

[Marketplace URIs](/reference/live/rest/uri/marketplace/atoc-reference-marketplace)