Content.keywords

Keywords describing the content as one comma-separated string. Only one of Content.keywords and Content.kwarray may be present.

CurrentstringOptionalSince 2.0

Field facts

Path: app.content.keywords, dooh.content.keywords, site.content.keywords
Object: Content
Type: string
Requirement: Optional
Added: OpenRTB 2.0
Spec section: 3.2.16

Where the field sits in a payload, with everything else left out:

{
  "id": "req-1",
  "app": {
    "content": {
      "keywords": "cooking,documentary,travel"
    }
  }
}

Sending both keywords and kwarray. The validator reports the pair as mutually exclusive.
Copying the site's or app's keywords here. Content keywords should describe the specific article, video, or episode.

Added in OpenRTB 2.0, and present in the latest snapshot. The table shows how each version's spec text types the field.

Versions	Type in the spec	Required	Deprecated
2.0 to 2.1	string	No	No
2.2	string co st	No	No
2.3 to 2.3.1	string	No	No
2.4	string	No	No
2.5 to 2.6-202606	string	No	No