Bid.adid

The ID of an ad the exchange already holds, such as a pre-registered creative, to serve if this bid wins. An alternative to sending markup in the bid.

CurrentstringOptionalSince 2.0

Field facts

Path: seatbid.bid.adid
Object: Bid
Type: string
Requirement: Optional
Added: OpenRTB 2.0
Spec section: 4.2.3

How it is used

It only works with exchanges that support preloaded creatives. The exchange can pass the value back through the ${AUCTION_AD_ID} macro.

Example

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

{
  "seatbid": [
    {
      "bid": [
        {
          "adid": "ad-88213"
        }
      ]
    }
  ]
}

Version history

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 2.2	string	No	No
2.3 to 2.6-202606	string	No	No

Related fields

Bid.crid
Bid.adm

Other Bid fields

adm
adomain
api
apis
attr
bundle
burl
cat
cattax
cid
crid
dealid
dur
exp
ext
h
hratio
id
impid
iurl
langb
language
lurl
mtype
nurl
price
protocol
qagmediarating
slotinpod
tactic
w
wratio

For a walkthrough of the whole object, read Bid response anatomy.