Bid.ext

Bidder-specific extensions to the bid. The spec defines no members. The IAB DSA transparency extension, for example, puts its response object at bid.ext.dsa to answer the request's regs.ext.dsa.

CurrentobjectOptionalSince 2.0

Field facts

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

Example

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

{
  "seatbid": [
    {
      "bid": [
        {
          "ext": {}
        }
      ]
    }
  ]
}

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	object as	No	No
2.1 to 2.2	object	No	No
2.3 to 2.6-202606	object	No	No

Other Bid fields

adid
adm
adomain
api
apis
attr
bundle
burl
cat
cattax
cid
crid
dealid
dur
exp
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.