EID.inserter

The canonical domain of the company that added this ID to the request, such as the publisher, an SSP, or a header wrapper. Added in OpenRTB 2.6-202409.

CurrentstringOptionalSince 2.6-202409

Field facts

Path
user.eids.inserter
Object
EID
Type
string
Requirement
Optional
Added
OpenRTB 2.6-202409
Spec section
3.2.27

How it is used

Use the same domain that identifies you in ads.txt and in SupplyChainNode.asi; for a publisher, the domain of the site or app. With matcher and mm, it lets a buyer see whether an ID came straight from the provider or was attached further down the chain.

Example

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

{
  "id": "req-1",
  "user": {
    "eids": [
      {
        "inserter": "ssp.example"
      }
    ]
  }
}

Common mistakes

  • Sending a company name or a URL with a scheme instead of a bare domain.

Version history

Added in OpenRTB 2.6-202409, and present in the latest snapshot. The table shows how each version's spec text types the field.

VersionsType in the specRequiredDeprecated
2.6-202409Listed in this release's notes; IAB's tagged spec file for it does not include the field yet.
2.6-202501 to 2.6-202606stringNoNo

Related fields

Other EID fields

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