Open RTB Bid Response Specifications

The response for a bid request should have the following structure:

Bid Response Object

Attribute	Required?	Description
id	Yes	ID of the bid request (string)
seatbid	Yes	Collection of bids made by the bidder on behalf of a specific seat.

 

seatbid

Attribute	Required?	Description
bid	Yes	ID of the impression object to which this bid applies (string)

 

seatbid.bid

Attribute	Required?	Description
id	Yes	ID for the bid object chosen by the bidder (string)
impid	Yes	ID of the impression object to which this bid applies (string)
price	Yes	Bid price in CPM or CPC (float)
adm	Yes	EXADS XML/JSON Ad Markup (string)
nurl	No	Win notification URL, it is recommended to use HTTP over HTTPS for nurl (string) - not mandatory
ext	No	EXADS specific extension

 

seatbid.bid.ext

Attribute	Required?	Description
btype	Always returned to client.	Pricing Model. Values: 1 - CPM; 2 - CPC. Default: 1 (int) - not mandatory.

---

Note: Only Push Notification and Native ad formats may bid with the CPC pricing model.

---

 

Bid response object example (Banner / iFrame / Popunder / In-Stream / Push Notifications)

{
    "id": "d4b5c697-41f3-4c1c-a3d5-5fd01b5ef2aa",
    "seatbid": [{
        "bid": [{
            "id": "12ab3d",
            "impid": "974090632",
            "price": 0.55,
            "adm": "<EXADS_XML_OR_JSON_AD_MARKUP>",
            "nurl": "http://network-domain.com/win-notification",
            "ext": {
                "btype": 1
            }
        }]
    }]
}

 

Bid response object example (Native Ad)

{
  "id": "7a452540-c8c9-43ca-9d30-ab9d8bfd17a4", 
  "seatbid": 
  [
    {
      "bid": 
      [
        {
          "id": "4fab7972833e2aaf53a828b1408fc104293734e3", 
          "impid": "2d099176-9feb-44e9-85f9-f385b34123a1", 
          "price":0.0025,                                 
          "adm": "<EXADS_JSON_AD_MARKUP>", 
          "ext": { "btype": 1 }, 
          "nurl": "https://mysite.com/my_notification_url"
        }
      ]
    }
  ]
}

 

EXADS JSON Encoded String Markup for Native Ads

For native ads the adm parameter should contain a JSON encoded string like this:

{
  "native": {
    "link": { "url": "https://mysite.com/landingpages/mypage" },
    "eventtrackers": [
      {
        "event": 1, 
        "method": 1, 
        "url": "https://myEventTracker1.com"
      }
    ],
    "assets": [
      { "id": 1, "title": { "text": "Ad Title" } },
      { "id": 2, "data": { "value": "Ad description" } },
      {
        "id": 3,
        "img": {
          "url": "https://mysite.com/images/myad.jpg",
          "w": 300,
          “h”: 300,
        }
      }
    ]
  }
}
         

 

EXADS Banner XML Ad Markup

<?xml version="1.0" encoding="ISO-8859-1"?>
<ad>
    <imageAd>
        <clickUrl><![CDATA[http://mysite.com/landingpages/mypage]]></clickUrl>
        <imgUrl><![CDATA[http://mysite.com/images/myad.jpg]]></imgUrl>
    </imageAd>
</ad>

 

EXADS Popunder XML Ad Markup

<?xml version="1.0" encoding="ISO-8859-1"?>
<ad>
    <popunderAd>
        <url><![CDATA[http://mysite.com/landingpages/mypage]]></url>
    </popunderAd>
</ad>

 

EXADS JSON Encoded String Markup for Push Notification Ads

For Push Notification ads the adm parameter will contain a JSON encoded string like the following (note that we use the 'native' object to implement push notification ads):

{\"native\":{\"link\":{\"url\":\"http:\/\/mysite.com\/landingpages\/mypage\"},\"assets\":[{\"id\":1,\"required\":1,\"img\":{\"url\":\"http:\/\/mysite.com\/images\/myad.jpg\",\"w\":192,\"h\":192}},{\"id\":2,\"title\":{\"text\":\"Ad Title\"}},{\"id\":3,\"data\":{\"type\":2,\"value\":\"Ad description\"}}]}}

Which is based on the following JSON object:

{
    "native": {
          "link": {
              "url": "http://mysite.com/landingpages/mypage"
          },
          "assets": [
              {
                  "id": 1,
                  "required": 1,
                  "img": {
                      "url": "http://mysite.com/images/myad.jpg",
                      "w": 192,
                      "h": 192
                  }
              },
              {
                  "id": 2,
                  "title": {
                      "text": "Ad Title"
                  }
              },
              {
                  "id": 3,
                  "data": {
                      "type": 2,
                      "value": "Ad description"
                  }
              }
          ]
    }
}

No Bid Response

To answer a bid request without making an actual bid, an HTTP response code 204 "No Content" will be sent.  

Win Notification

When the parameter Bid Response Object -> Seat Bid Object -> Bid Object -> nurl is in the bid response, a GET request must be performed to such URL.