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This article is part of our header bidding series. This series includes information on our header code, header adaptor, pre-bid auction API, DFP setup and header auction workflow. 

Sovrn is pleased to be able to offer professional integration assistance with the Header API as part our implementation of the Pre-Bid Auction API. Header Bidding

What to Expect

1. 30 minute introductory call – On this call the Sovrn team will meet with you to assess your current ad serving technologies, whether there are any existing header auction integrations in place and answer any questions.

2. Professional assessment and level of effort – Either during the call or at most within 1 business day, Sovrn will return an integration plan to the you. Most integrations can be completed in 48 hours with 24 hours necessary to create the necessary tags and an additional 24 hours for testing in the sandbox environment.

3. Integration – Sovrn will create ad tags corresponding to your ad sizes and placements, and generate a JavaScript tag to be placed in the <head> section of the your site(s). A tag for each ad placement may be placed directly on the page or as the “creative” in your Ad Server. If you are using DFP, Sovrn will be able to assist with setting up DFP targeting to activate the Sovrn line item corresponding to the bid price.

Project Completion

Upon completion of the integration you will be able to:

  • Retrieve a guaranteed price from Sovrn for all ad placements sent to the Pre-bid API
  • If already integrated with other Header Bidding partners, compare the Sovrn guaranteed price to other bids
  • Target the line item in DFP corresponding to that guaranteed price to deliver the Sovrn ad creative to the page
  • Fill the ad placement directly with an on-page tag
  • Trigger the Sovrn impression logger and get paid for the impression


Sovrn Pre-Bid Auction API v 1.0

The Sovrn Header API follows the OpenRTB 2.2 spec. All required fields to be completed by the publisher are noted below. Additional required fields in OpenRTB 2.2 bid requests are added by Sovrn before sending into Sovrn’s RTB auction.

Test URL: http://adintegration.lijit.com/rtb/bid

Production URL: http://ap.lijit.com/rtb/bid


Query Parameters:

callback: This “callback” parameter is the name of the function that will be called with response data as the input. In other words, this parameter sets the value of the JSONP callback function.

br: This “br” parameter is the URL encoded form of the JSON bid request. Sample Bid Request and Required Fields

  “id”: “publisher-supplied-request-id”, //required  field
  “imp”: //required  field, array of impression requests
    “id”: “publisher-supplied-impression-id-1”, //required  field
    “banner”: { //required  field
      “w”: 300,
      “h”: 250
    “tagid”: “9999998”, //zone id  //required  field this value is setup for a publisher by sovrn
    “bid floor”: 0.5 //optional  field, overrides the preconfigured value in publisher ad tag.
    “id”: “publisher-supplied-impression-id-2”,
    “banner”: { //required  field
      “w”: 160,
      “h”: 600
    “tagid”: “9999999” //zone id //required  field this value is setup for a publisher by us

} ],

  “site”: {
    “domain”: “sovrn.com”, // publisher domain //required  field
    “page”: “/path/to/content?content=content”


Example URL-Encoded Bid Request:

http://ap.lijit.com/rtb/bid?callback=processResponse&br=%7B%22id%22%3A%22publisher-supplied-re- quest-id%22%2C%22imp%22%3A%5B%7B%22id%22%3A%22publisher-supplied-impression-id-1%22%2C%22ban- ner%22%3A%7B%22w%22%3A300%2C%22h%22%3A250%7D%2C%22tagid%22%3A%229999998%22%7D%2C%7B%22id%22% 3A%22publisher-supplied-impression-id-2%22%2C%22banner%22%3A%7B%22w%22%3A160%2C%22h%22%3A600%7 D%2C%22tagid%22%3A%229999999%22%7D%5D%2C%22site%22%3A%7B%22domain%22%3A%22sovrn.com%22%7D%7D

Bid Response

The publisher will extract the price, adm and nurl from each impression and use it to evaluate the bid.

price: value in CPM of the bid. Used to evaluate the bid against competing offers and for publishers using DFP to set targeting criteria.

adm: Ad creative. To be added to the ad placement on a win.
nurl: Noti cation URL. Must be triggered with the ad placement in order to log the impression.

Sample Bid Response

  “id” : “publisher-supplied-request-id”,
  “seatbid” : [ {
    “bid” : [ {
      “id” : “a_282676_9c53ff48afd04f4d9158a6afc70ad62c”,
      “impid” : “publisher-supplied-impression-id-1”,
      “price” : 1.0,
      “nurl” : “http://adintegration.lijit.com/www/delivery/lg.php?bannerid=52432&cam-
      “adm” : “<script type=\”text/javascript\” src=\”http://adserver.com/creative1”></script>”
    }, {
      “id” : “a_299047_0b8820c84a504f989fa7c3f5d5caab01”,
      “impid” : “publisher-supplied-impression-id-2”,
      “price” : 1.0,
      “nurl” : “http://adintegration.lijit.com/www/delivery/lg.php?bannerid=91433&cam-
      “adm” : “<script type=\”text/javascript\” src=\”http://adserver.com/creative2”></script>”

}] }]


Beacon Call

The beacon call is a separate call which should be inserted in the header to help ll rate and CPM for the pre-bid auction.

URL: http://gslbeacon.lijit.com/beacon

Required Parameters

viewId: SOVRN_USERNAME]_auction_api
rand: [RANDOM_4_DIGIT_NUMBER] Ex: Math. floor(9e3 * Math.random()) informer: [SOVRN_INFORMER_ID]
type: fpads
v: 1.2

sovrn will provide the Informer ID and Username to use.

Example Beacon Call

type=fpads&loc= atironchef.com&v=1.2


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