AppLovin oRTB Specification

AppLovin RTB supports the OpenRTB 2.5 API on ad requests from apps that MAX mediates. This document describes the OpenRTB integration with AppLovin for SDK bidders and DSPs and details any feature differences between the OpenRTB 2.5 spec and the AppLovin RTB spec.

GDPR non-consent and CCPA do-not-sell requests are not supported and will not be sent in the bid stream.

Protocol Details

Bid Requests

AppLovin RTB buyers receive bid requests in HTTP POST format. AppLovin recommends that you use HTTP so as to avoid latency.

HTTP Keep-Alive

AppLovin RTB buyers should enable persistent connection handling. Set max keep-alive to at least five minutes.

Compressed/gzip oRTB

AppLovin RTB requires compression for efficiency. Adhere to OpenRTB API Specification version 2.5 section 2.4: Data Encoding.

Bid Regions

The AppLovin RTB servers cover four geographical regions:

• ASIA-PACIFIC: Hong Kong, Tokyo
• EUROPE: Amsterdam
• US-EAST: New York, Washington
• US-WEST: San Francisco, San Jose

Endpoints

DSP buyers and SDK bidders can specify up to one endpoint per region. All requests from the respective region will be routed to that endpoint.

Supported Ad Formats

AppLovin RTB supports mobile in-app ads only; it does not support desktop or web ad serving. The ad formats AppLovin RTB supports are banners, medium rectangles (MRECs), native ads, interstitials, and rewarded ads.

Acceptable MIME types include:

Acceptable MRAID and VAST versions include those shown in the list below. However, there are limitations. For example, AppLovin RTB does not support calendar API events from MRAID.

• MRAID 1.0
• MRAID 2.0
• MRAID 3.0
• VAST 2.0
• VAST 3.0
• VAST 4.0
• VAST 4.1
• VAST 4.2

There is additional information further down on this page concerning MRAID, native ads, and VAST support.

Supported Ad Sizes

AppLovin RTB supports the following ad sizes:

Exchange Currency

AppLovin RTB Exchange supports only USD. It ignores the currency attribute cur.

Auction Type

MAX auction runs on a first-price basis. AppLovin expects bidders to pay the CPM amount they bid in full.

Blocked Creative Types

AppLovin RTB blocks the following creative types:

• Adobe Flash
• Audio Ad (Auto-Play)
• Audio Ad (User Initiated)
• Expandable (User Initiated — Rollover)
• Pop (e.g. Over, Under, or Upon Exit)
• Provocative or Suggestive Imagery
• Windows Dialog or Alert Style

If the publisher does not support playable ads, then AppLovin RTB also blocks the following creative types:

• Expandable (Automatic) [only for non-banner/MREC]
• Expandable (User Initiated — Click) [only for non-banner/MREC]
• User Interactive (e.g. Embedded Games)

Blocked Categories

AppLovin RTB blocks the following IAB categories:

• IAB8-5 (Cocktails/Beer)
• IAB8-18 (Wine)
• IAB11-4 (Politics)
• IAB25 (Non-Standard Content)
• IAB26 (Illegal Content)

Blocked Ad Types

AppLovin RTB blocks the following ad types:

• flash
• iframe
• XHTML Text Ad

MoPub Marketplace Exchange to AppLovin Exchange Migration: Exchange RTB Breakdown

As DSPs migrate their integration from MoPub Marketplace to the AppLovin Exchange, there will be differences and improvements in some of the key integration features. Below is a comparison of notable RTB feature differences:

Bid Request

Request Objects

AppLovin RTB bid requests always carry a single impression (this differs from the OpenRTB schema). Each request has exactly one impression object (imp).

Seats

The AppLovin RTB Exchange does not support multiple seats per bidder. It ignores the seat whitelist wseat array.

Bid Request Object

App Object

Device Object

Geo Object

Impression Object

An AppLovin RTB bid request always carries a single impression (this differs from the OpenRTB schema). Each request has exactly one impression object (imp).

If the request includes a banner object in the impression object, the impression is eligible for HTML and MRAID ads. If the request includes a video object, the impression is eligible for VAST ads. The impression object may either include only a banner or video sub-object, or it may include both such objects.

Metric Object

Video Object

Banner Object

Native Object

AppLovin native ads use OpenRTB Dynamic Native Ads API Specification Version 1.2. The impression object contains the native object. The native object contains the request field with the JSON string representation of the native request. AppLovin does not support video assets.

Bid Response

Size

The maximum size of the bid response is 4KB.

No Bids

To communicate a no-bid response, pass an empty response with a status code of 204.

Win/Loss/Billing Notifications

AppLovin RTB calls the win, loss, and billing notice URLs that the requester supplies in the request’s nurl, lurl, and burl fields respectively. AppLovin RTB calls the win URL when the auction completes and AppLovin sends the ad to the device. It calls the loss URL either during the auction, if the associated ad fails to load properly, or after a different winning ad loads. It calls the billing URL when the device renders the ad, that is, when the video starts playing, or, for graphic ads, when the device displays the ad.

The requester may embed macros into the specification of these notification URLs. AppLovin RTB will substitute appropriate values for those macros in the URL before AppLovin RTB requests the URL. The following list shows the macros that the requester may embed in these URLs:

Example Win Bid URL with Macros

https://example.com/endpoint/auction=${AUCTION_ID}&price=${AUCTION_PRICE}

Ad Markup Standard

DSP bidders must include ad markup in the bid response. AppLovin RTB does not support returning the ad markup in response to the win notice.

Your ad markup must comply with AppLovin’s RTB ad markup standard. AppLovin’s RTB servers check the ad markup’s compliance as soon as they receive the bid, and then they perform the following sanity checks on the ad markup:

• Ad markup is properly escaped.
• Ad markup is URL-encoded, except for VAST ads.
• HTML of the ad markup is a snippet.
• When you bid with a rich media ad, put the content of the node in a CDATA construct. CDATA in XML requires no encoding whatsoever. However if you pass an XML document in a JSON-context, you must apply JSON syntax and escaping rules, as follows:
  • All double quotes are escaped as \".
  • Apostrophes are not escaped.
  • The XML doc is stripped of all tab and newline characters. (The Example VAST Ad Markup below is formatted for easy readability. Do not send extra whitespace in your actual ad markup.)

To verify that an ad markup snippet is valid JSON content (along with its CDATA), you can pass that snippet into the on-line JSONLint validator.

SDK bidders are not required to pass ad markup because all creatives should be rendered via your SDK. SDK bidders may use the admarkup field to pass custom data, which can be configured to be returned to your SDK at load time via the adapters.

Bid Response Components

There are three components to the bid response:

bidresponse

top-level object

seatbid

collection of bids made by the bidder on behalf of a specific seat

bid

an offer to buy a specific impression under certain business terms

Bid Response Object

Seatbid Object

Bid Object

Tracking Fields

The following table shows the tracking fields available to Demand Side Platforms, and their recommended uses.

Impressions and spend tracking must be done through the bid response field burl. AppLovin will only investigate discrepancies when burl is used for tracking.

Creative Types

The following details on creative types apply to DSP bidders in the AppLovin Exchange.

When you introduce a new creative format, AppLovin highly encourages that you test with the AppLovin DSP Sample App before you go live.

SDK bidders must handle the rendering of creatives via their own SDK and should reach out to their AppLovin contact should they have any questions.

VAST Support

VAST videos auto-play on Android and iOS. AppLovin supports only Linear videos. Videos should be at least 5 seconds long and at most 30 seconds long. Video file sizes should be below 4MB (for optimal playback, AppLovin recommends video files to be smaller than 2MB). AppLovin aspect-fits the video in the middle of the screen depending on device size.

The adm (or ad markup field) must contain the entire VAST 2.0 XML payload, VAST 3.0 XML payload, or VAST 4.0 XML payload. AppLovin does not support URL-encoded VAST tags. Embed VAST in bid.adm.

AppLovin supports VAST Wrapper only on newer SDKs: Android 7.0.0+ (for Interstitial only; Wrapper tags not supported for Rewarded) or iOS 4.0.0+ (Interstitial and Rewarded).

Impression Tracking

AppLovin fires tags on the server side that you send through the <impression> node. You can send more than one such node.

Click Tracking

AppLovin fires the tag on the client side that you send through the <ClickTracking> node. If you use a deep-link, you must include it in the <ClickThrough> node.

If you use a deep-link in an iOS ad, the ext.skadn object must be null. Otherwise the App Store will be opened within the ad and the <ClickThrough> node will be dismissed.

AppLovin supports quartile tracking only on newer SDKs: Android 7.0.0+ or iOS 4.0.0+.

Companion Ads

AppLovin RTB expects a full-screen companion ad in the response for VAST ads. The request specifies the phone screen dimensions. The AppLovin SDK aspect-fits the ad in the middle of the screen. Since these are video end cards, use something in the ~1.33 aspect ratio range (e.g. 1024×768 for landscape) and high quality images for best results with companion ads.

AppLovin supports only <HTMLResource> and <StaticResource>. Support for <HTMLResource> as a companion ad is off by default.

Example VAST Ad Markup

{
  "adm": "<VAST version=\"2.0\">
    <Ad id=\"applovin-video\">
      <InLine>
        <AdSystem version=\"AppLovin\">AppLovin Ad Server</AdSystem>
        <AdTitle><![CDATA[AppLovin Video]]></AdTitle>
        <Description><![CDATA[AppLovin Video]]></Description>
        <Impression id=\"AL_Imp\" />
        <Creatives>
          <Creative sequence=\"1\" id=\"1\">
            <Linear>
              <Duration>00:00:13</Duration>
              <VideoClicks>
                <ClickThrough id=\"AL_Click\"><![CDATA[https://rtb.applovin.com/redirect?clcode=3!1563.1466706706!FgcnDB8CXKyVimq2aZHmpR2JxNmwsN1NMK7UlK6FqhOI54WxpITXiYcxUEVgXRIwedrcfVmD_DpD3lfBLqzpw5qF7sPXmXQ_kY1NLKQ2kdQn4cwctkm--RBq1Cmz5mX8RJRytc-G3KeJ9usTmgmXTSFtLvHGSGHIM7Pwfq_KiEAQiKweR20lp_iyQXVNwiUJmpFFoQpAm9bNU5JegcmPfIIBnesZKk5pmdJDpUEnjlFdNAqRCzci_qO-f6RtTdYEvJBqnh9usSgEdxnfLh-hHpNx5CovcfTejFfF94CTaTV_K6wEHXQOjZdT-yfdeydAQEkl3bUxiT8cXrEuCu73WHFVOoYwoLJLLAipuLCNCkj9DSvZ6JTnoQkPRlpBjSJQmmYXNv2HDKXYKSgIA-g-wRaTuRZ0lMi4OHNBK_N4ClACeg2TOFYTp3cHWnh6gEr-ZfWQ4FUzgGCLQRXm0Ez7wjCRM0vfoVsdVEZrctobQI7_im9tT4UmTjNgxP7dKlLHRwhl68fBqGUMobFSsohmuucakp5BXlSPyQIh91MoTOOsbR2UTMZXjFholy7qDgDxNxKzaQk0AFX6Vf0w**&did=104934ef84eee135bb&eventid=7d2a138bf9102f05dcbf9540b5f5dd2a317cc&ssl=1]]></ClickThrough>
              </VideoClicks>
              <MediaFiles>
                <MediaFile delivery=\"progressive\" bitrate=\"932\" width=\"570\" height=\"320\" type=\"video/mp4\"><![CDATA[https://vid.applovin.com/468779_570x320.mp4]]></MediaFile>
              </MediaFiles>
            </Linear>
          </Creative>
          <Creative sequence=\"1\" id=\"1\">
            <CompanionAds>
              <Companion width=\"1024\" height=\"768\">
                <StaticResource creativeType=\"image/gif\"><![CDATA[https://img.applovin.com/1461768_1024x768.gif]]></StaticResource>
                <CompanionClickThrough><![CDATA[https://rtb.applovin.com/redirect?clcode=3!1563.1466706806!FgcnDB8CXKHpfIyVimq2aZHmpR2JxNmwsN1NMK7UlK6FqhOI54WxpITXiYcxUEVgXRIwedrcfVmD_DpD3lfBLqzpw5qF7sPXmXQ_kY1NLKQ2kdQn4cwctkm--RBq1Cmz5mX8RJRytc-G3KeJ9usTmgmXTSFtLvHGSGHIM7Pwfq_KiEAQiKweR20lp_iyQXVNwiUJmpFFoQpAm9bNU5JegcmPfIIBnesZKk5pmdJDpUEnjlFdNAqRCzci_qO-f6RtTdYEvJBqnh9usSgEdxnfLh-hHpNx5CovcfTejFfF94CTaTV_K6wEHXQOjZdT-yfdeydAQEkl3bUxiT8cXrEuCu73WHFVOoYwoLJLLAipuLCNCkj9DSvZ6JTnoQkPRlpBjSJQmmYXNv2HDKXYKSgIA-g-wRaTuRZ0lMi4OHNBK_N4ClACeg2TOFYTp3cHWnh6gEr-ZfWQ4FUzgGCLQRXm0Ez7wjCRM0vfoVsdVEZrctobQI7_im9tT4UmTjNgxP7dKlLHRwhl68fBqGUMobFSsohmuucakp5BXlSPyQIh91MoTOOsbR2UTMZXjFholy7qDgDxNxyGKzaQk0AFX6Vf0w**&did=104924ef84eee135bb&eventid=7d82abf9102f05dcbf9540b5f5dd2a317cc&ssl=1]]></CompanionClickThrough>
              </Companion>
            </CompanionAds>
          </Creative>
        </Creatives>
        <Extensions>
        </Extensions>
      </InLine>
    </Ad>
  </VAST>"
}

MRAID Support

MRAID ads must include a loading indicator to signal that the ad is loading. There is no limit on ad duration for regular MRAID ads, but rewarded MRAID ads have a maximum of 30s. AppLovin supports mraid.open only for click trackers.

Rewarded MRAID placements (playable ads) are off by default. If you are interested in these, please contact your AppLovin point of contact.

Close Button

Remove the close button if any. AppLovin supplies the close button on all MRAID ads.

HTML Support

AppLovin RTB centers all HTML ads. The resulting ad position depends on the ad size and the screen size. AppLovin supplies the close button.

Native Support

AppLovin native ads use OpenRTB Dynamic Native Ads API Specification Version 1.2.

The impression object contains the native object. The native object contains the request field with the JSON string representation of the native request.

Native Request Information

Native Request Assets

Native Response Information

Native response must have native.link.url with the destination link URL.

The AppLovin SDK does not yet support native video.

CTV Support

AppLovin RTB supports Connected TV (CTV) inventory. The following will help with a successful integration:

• CTV requests support video only, so there is no banner object under the imp object.
• VAST is the only supported format for Connected TV inventory. AppLovin does not support MRAID or VPAID.
• Only the mp4 video MIME type is supported.
• seatbid.bid.ext.duration is mandatory.

For VAST InLine:

• The bitrate should fall between minbitrate and maxbitrate sent in the bid request.
• The width and height should be equal to imp.video.w and imp.video.h in the bid request.

Ad Caching

The AppLovin SDK caches certain ads to improve ad display responsiveness. Cached ads are shown only in the same session. The SDK caches ads for up to four hours, but normally the period between cache and show is only a few minutes.

Video

AppLovin caches only inline video ads. For optimal responsiveness, the maximum video file size allowed is 4MB. Try to keep video file sizes below 2MB.

MRAID

AppLovin does not cache MRAID ads. While AppLovin does not have a size limit, keep your creative assets in your MRAID markup as lean as possible to ensure your ads are responsive when the publisher attempts to render them. All MRAID ads must include a loading indicator to signal when the ad is loading. The AppLovin close button appears after five seconds, regardless of loading status.

Example Bid Request

{
  "app": {
    "bundle": "com.example.game",
    "cat": ["IAB9-30"],
    "id": "188e1f4c72744d3da3134a25",
    "name": "Example Game",
    "publisher": {
      "id": "41c8cd761e099946e85842c11debfb4d"
    },
    "storeurl": "https://play.google.com/store/apps/details?id=com.example.game"
  },
  "at": 2,
  "bcat": ["IAB8-5","IAB8-18","IAB11-4","IAB25","IAB26"],
  "device": {
    "carrier": "telekomde",
    "connectiontype": 3,
    "devicetype": 4,
    "dnt": 0,
    "geo": {
      "city": "Barrington",
      "country": "USA",
      "metro": "",
      "type": 2,
      "zip": ""
    },
    "h": 1280,
    "hwv": "hllte",
    "ifa": "e1020eb8-fc74-454d-b420-a9763d8bc556",
    "ip": "203.0.113.12",
    "js": 1,
    "language": "de",
    "lmt": 0,
    "make": "samsung",
    "model": "SM-N7505",
    "os": "Android",
    "osv": "5.1.1",
    "ua": "Mozilla/5.0 (Linux; Android 4.3; SM-N7505 Build/JSS15J) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/40.0.2214.89 Mobile Safari/537.36",
    "w": 720
  },
  "id": "94dedeadbeefc4b8fcba406639bbf15912766bdc",
  "imp": [
    {
      "banner": {
        "api": [
          3,
          5
        ],
        "battr": [
          1,
          2,
          5,
          8,
          9,
         14,
         17
        ],
        "btype": [
          1,
          4
        ],
        "h": 480,
        "pos": 1,
        "w": 320
      },
     "displaymanager": "applovin",
     "displaymanagerver": "6.1.4",
     "id": "1",
     "instl": 1,
     "secure": 0,
     "tagid": "0652dbc39a23edfd",
     "video": {
        "battr": [
          1,
          2,
          3,
          7,
          8,
          9,
         14,
         13
        ],
        "companiontype": [
          1,
          2,
          3
        ],
        "h": 480,
        "linearity": 1,
        "mimes": [
          "video/mp4"
        ],
        "protocols": [
          2,
          3
        ],
        "w": 320
      }
    }
  ]
}

Example Native Bid Request

{
  "app": {
    "bundle": "com.example.game",
    "cat": [
      "IAB24"
    ],
    "id": "81a292321de8ed119cb833e0a80c4231",
    "name": "Example Game",
    "publisher": {
      "id": "41c8cd761e099946e85842c11debfb4d"
    },
    "storeurl": "https://play.google.com/store/apps/details?id=com.example.game"
  },
  "at": 2,
  "badv": [
  ],
  "device": {
    "carrier": "verizon",
    "connectiontype": 2,
    "devicetype": 4,
    "dnt": 0,
    "geo": {
      "city": "Redwood City",
      "country": "USA",
      "metro": "",
      "type": 2
    },
    "h": 0,
    "hwv": "",
    "ifa": "12341234-1234-1234-1234-123412341234",
    "ip": "255.255.255.255",
    "ipv6": "2a00:79e1:abc:6b01:d516:20e2:582d:339a",
    "js": 1,
    "language": "en",
    "lmt": 0,
    "make": "",
    "model": "",
    "os": "Android",
    "osv": "8.0.0",
    "ua": "Mozilla/5.0 (Linux; Android 8.0.0; en_US; Moto Z (2) Build/ODXS27.000-00-00) AppleWebKit/000.00 (KHTML, like Gecko) Version/4.0 Chrome/30.0.0.0 Mobile Safari/000.00",
    "w": 0
  },
  "id": "d628d2709c061c14ea4a2e17a52da1778534d1f5",
  "imp": [
    {
      "displaymanager": "applovin",
      "displaymanagerver": "6.0.0",
      "ext": { },
      "id": "1",
      "native": {
        "api": [],
        "battr": [
          1,
          2,
          5,
          8,
          9,
         14,
         17,
          3,
          4,
         13
        ],
        "request": "{"native":{"assets":[{"id":1,"required":1,"title":{"len":140}},{"id":2,"img":{"hmin":800,"type":3,"wmin":417},"required":1},{"id":3,"img":{"hmin":50,"type":1,"wmin":50},"required":1},{"data":{"len":140,"type":2},"id":4,"required":0},{"data":{"len":15,"type":12},"id":5,"required":1},"context":1501,"plcmtcnt":1,"plcmttype":1,"ver":"1.2"}}",
        "ver": "1.2"
      },
      "secure": 0,
      "tagid": "5ba489fc7ec59a27:NOTIFYCLEAN"
    }
  ]
}

Example CTV Bid Request

{
  "id": "eb3ebe82eb5223c2525d46bd3bef213649466b0a",
  "at": 1,
  "bcat": [
    "IAB11-4",
    "IAB8-5",
    "test1",
    "IAB8-18",
    "IAB25-7",
    "IAB25-1",
    "IAB25-5",
    "IAB25-2",
    "IAB25-3",
    "IAB26-1",
    "IAB25-4",
    "IAB26-4",
    "IAB26-2",
    "IAB26-3",
    "IAB25-6",
    "test2"
  ],
  "tmax": 1000,
  "badv": [
    "test2",
    "test1"
  ],
  "app": {
    "name": "APPINT",
    "bundle": "com.applovin.appint",
    "cat": [],
    "id": "a9dad9c29f02533c9462db5555561e79",
    "publisher": {
      "id": "61310",
      "ext": {}
    },
    "content": {
      "contentrating": "TV-PG",
      "genre": "Documentary,Science",
      "episode": 2,
      "season": "7",
      "ext": {
        "channel": "AppLovin Test"
      }
    },
    "storeurl": "https://channelstore.roku.com/details/196460",
    "ext": {}
  },
  "device": {
    "ifa": "66dcd4a1-a0ed-b2b8-7e1a-3d2ea2ecc889",
    "ip": "204.14.60.221",
    "language": "en",
    "devicetype": 3,
    "js": 0,
    "geo": {
      "type": 2,
      "ipservice": 3,
      "lat": 42.2441,
      "lon": -75.2871,
      "long": -75.2871,
      "city": "Sidney Center",
      "country": "USA",
      "region": "ny",
      "dma": "502",
      "metro": "502",
      "zip": "13839",
      "ext": {
        "org": "DTC Cable",
        "isp": "DTC Cable"
      }
    },
    "ext": {},
    "make": "Roku",
    "model": "DVP",
    "os": "Roku OS",
    "dnt": 0,
    "lmt": 0
  },
  "imp": [
    {
      "id": "1",
      "displaymanager": "applovin",
      "instl": 0,
      "secure": 1,
      "tagid": "2f850a687d1acfdb:",
      "bidfloor": 22.58823529411765,
      "bidfloorcur": "USD",
      "exp": 14400,
      "video": {
        "w": 1920,
        "h": 1080,
        "battr": [
          1,
          2,
          5,
          8,
          9,
          14,
          17,
          3,
          4,
          13
        ],
        "mimes": [
          "video/mp4",
          "video/ogg",
          "video/webm"
        ],
        "placement": 1,
        "pos": 1,
        "minduration": 1,
        "maxduration": 120,
        "startdelay": -1,
        "minbitrate": 1,
        "maxbitrate": 280000,
        "linearity": 1,
        "sequence": 1,
        "protocols": [
          1,
          2,
          3,
          4,
          5,
          6
        ],
        "podid": "pod_1",
        "podseq": 0,
        "slotinpod": 0,
        "ext": {
          "maxsequence": 1
        }
      },
      "rwdd": 0,
      "ext": {}
    }
  ],
  "user": {
    "ext": {
      "gdpr": 0
    },
    "id": "66dcd4a1-a0ed-b2b8-7e1a-3d2ea2ecc889"
  },
  "regs": {
    "coppa": 0,
    "ext": {
      "ccpa": 0,
      "gdpr": 0
    }
  },
  "source": {
    "ext": {
      "schain": {
        "ver": "1.0",
        "complete": 1,
        "nodes": [
          {
            "asi": "applovin.com",
            "sid": "61310",
            "rid": "eb3ebe82eb5223c2525d46bd3bef213649466b0a",
            "hp": 1
          }
        ]
      }
    }
  }
}

Example Bid Response

{
  "id": "5e1eb292d6b7ea9cf3da74ddb385996a62d3a6e9",
  "seatbid": [
    {
      "bid": [
        {
          "id": "8JxH4DHN4KMF21Vd",
          "impid": "1",
          "price": 15,
          "adid": "1093919",
          "adm": "<a href=\"https://click.url/click/8JxH4DHN4KMF21Vd?uid=05D02DC6-0132-4C2C-A879-79BB026BE3F8&partner=applovin&ts=2018-07-09T18-19-01Z&ad=1093919\"><img src=\"https://assets.dsp.io/ad_assets/files/320x50.png\" height=\"50\" width=\"320\" alt=\"\"/></a>",
          "adomain": [
            "advertiser.com"
          ],
          "bundle": "123123123",
          "iurl": "https://assets.dsp.io/ad_assets/files/320x50.png",
          "cid": "12345",
          "crid": "crid123",
          "cat": [
            "IAB22-2"
          ],
          "h": 50,
          "w": 320,
          "ext": {
            "crtype": "HTML",
            "imptrackers": [
                "https://example.dsp.events/win/8JxH4DHN4KMF21Vd?ts=2018-07-09T18-19-01Z&ad=1093919&uid=05D02DC6-0132-4C2C-A879-79BB026BE3F8&auction=${AUCTION_ID}&price=${AUCTION_PRICE}&partner=applovin"
            ]
          }
        }
      ]
    }
  ],
  "bidid": "8JxH4DHN4KMF21Vd",
  "cur": "USD"
}

Example Native Ad Response

{
  "bidid":"9aa2a2950894c95b9b02476a5ba5438dc6de8dc1",
  "cur":"USD",
  "id":"65de6af36e6fb32778afa94a996ec4c2b514145d",
  "seatbid":[
    {
      "bid":[
        {
          "adm":"{\"native\":{\"assets\":[{\"id\":100,\"title\":{\"text\":\"Test Ad\"}},{\"id\":200},{\"id\":300,\"img\":{\"h\":null,\"url\":\"https://assets.com/main_image.png_\",\"w\":null}},{\"id\":310,\"img\":{\"h\":80,\"url\":\"https://assets.com/icon_image.png\",\"w\":80}},{\"data\":{\"value\":\"Test Ad Subline\"},\"id\":420},{\"data\":{\"value\":\"Continue\"},\"id\":430},{\"data\":{\"value\":\"4.5\"},\"id\":410}],\"imptrackers\":[\"https://adserver.com/impression_tracker\"],\"link\":{\"url\":\"https://adserver.com/click_destination\"}}}\n",
          "adomain":[
            "somegame.com"
          ],
          "bundle":"com.game.example",
          "cat":[
            "IAB1"
          ],
          "crid":"74650.0!3ILDTypkALKe8xfw2WJLmxfNOftiOg2u3yeGIKEULAU*",
          "ext": {
            "crtype":"native"
          },
          "id": "1",
          "impid": "1",
          "iurl": "https://assets.com/preview.png",
          "price": 1.0
        }
      ],
      "seat":"A00000001"
    }
  ]
}

Changelog