UID.ext

Vendor-specific extensions for this identifier. The spec defines nothing inside it, so its contents depend on the identity provider's documentation.

CurrentobjectOptionalSince 2.6-202204

Field facts

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

{
  "id": "req-1",
  "user": {
    "eids": [
      {
        "uids": [
          {
            "ext": {}
          }
        ]
      }
    ]
  }
}

Added in OpenRTB 2.6-202204, 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
2.6-202204	Added in the first 2.6 release, published without a structured text archive; the 2.6-202210 republication is the first tagged text.
2.6-202210 to 2.6-202606	object	No	No

For a walkthrough of the whole object, read User identity and EIDs.