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Bidders - Bid request

Important

  • Not Supported: The AppNexus Bidding Protocol is no longer supported; this documentation is for legacy purposes only. We will deprecate this protocol on December 1, 2018.
  • If you're a new bidder integrating with AppNexus, please see the OpenRTB 2.4 Bidding Protocol.

A Bid Request is sent to bidders whenever an ad call reaches the Impression Bus. It contains all the necessary information for a bidder to produce a bid price and a creative to serve.

The Bid Request includes information from sellers that specifies which advertisers and creatives are allowed to win an auction and run on a page. This information is stored into an ad approval profile, which bidders can use to make sure that their bids are accepted.

Throttling bid requests

You may not wish to receive all bid requests that pass through the AppNexus platform. You can either throttle requests by some percentage, or filter requests by preset criteria such as geography.

Multi-tag bid requests

We sometimes send "multi-tag bid requests" where one Bid Request may include multiple tag IDs with potentially different sizes, ad quality standards, reserve prices, etc. For now, these requests should be handled with individual responses for each tag as if they were independent requests. However, in the near future, these multi-tag requests will be the foundation for takeovers, full page buyouts, and many other premium inventory features.

Each individual tag in a multi-tag request has a unique auction ID.

Implementation

Request headers

Field Scope Type Description
Connection all string Always set to "keep-alive" to ensure persistent TCP connections.
Content-Length all int Length of the body of the HTTP request (which includes all fields described below).
Host all string IP address to which the bid request has been sent.
X-Debug some int If set to 1, the ad call included the debug=1 flag, and no ad will be served.
X-DMA some int Code for the designated market area of the user based on IP address, if it can be determined.
X-Exclusive some int Indicates whether or not the auction is exclusive by default. An exclusive auction is one in which only the placement owner can serve an ad. The exclusive default may be overridden by the owner during the owner phase of the auction.
X-Segment some string A comma-separated list of segments that the user is in. Segments available include those owned by your members and those owned by 3rd party data providers (to whom AppNexus has granted your bidder access).
X-Venue all int This header is not currently used.

Auction info

General data

Field Scope Type Description
member_ad_profile_id some int The member-level ad approval profile ID that applies for the impression.
timestamp all timestamp Time the request was sent.
bidder_timeout_ms all int Number of milliseconds the bidder has from the time the request is sent by the Imp Bus to the time the response is received by the Imp Bus before timeout. This number will vary according to the supply partner.
bid_info all object Details about the user and the bid request in general. See Bid_Info below for more information.
members all array of objects An array of members that are eligible to bid on this call. A member is an entity that has a financial buying or selling relationship with AppNexus and is associated with a bidder. Some bidders may have multiple members; if you are building a bidder for your own exclusive use, you will be the only member. The member object has the id of the member. See Members below for more information.

Note: This is not an array of numbers, it is an array of objects. The exact syntax is given in the example below.
tags all array of objects An array of the tags that are being auctioned in this call. An auction will have at least one, but may have several tags. See Tags below for more information.

Owner-specific data

Field Scope Type Description
allow_exclusive some Boolean If the bidding member owns the inventory (i.e. member_id of tag = member ID of the bidder) then the member can serve into it without allowing other bidders to participate.

Debug data

Field Scope Type Description
debug_requested some Boolean If true, the ad call included the debug=1 flag, and no ad will be served. This will only be included in the bid request if the correct dongle is used.
debug_member_id some int This field will contain the value of the "debug_member" parameter, if the parameter is passed in the querystring and the "dongle" parameter passed in the querystring matches the member's dongle (set on the Member Service). Your bidder can use the debug_member_id to produce debug output that is limited to a particular member.
test some Boolean If true, the ad tag is running as a test and no ad will be served. If not present, test is false.

Other data

Field Scope Type Description
excluded_adservers some array of integers The IDs of adservers that are not eligible for the impression, as defined by the seller's ad quality settings. You can use the Ad Server Service to look up ad servers.
excluded_brands some array of integers The IDs of brands that are not eligible for the impression, as defined by the seller's ad quality settings. You can use the Brand Service to look up brands.
excluded_languages some array of integers The IDs of languages that are not eligible for the impression, as defined by the seller's ad quality settings. You can use the Language Service to look up languages.
excluded_categories some array of integers The IDs of categories that are not eligible for the impression, as defined by the seller's ad quality settings. You can use the Category Service to look up categories.
excluded_creatives some array of integers The IDs of creatives that are not eligible for the impression, as defined by the seller's ad quality settings. You can use the Creative Service to look up creatives.
excluded_technical_attributes some array of integers The IDs of technical attributes that are not eligible for the impression, as defined by the seller's ad quality settings. You can use the Technical Attribute Service to look up technical attributes.
single_phase some Boolean This field is not currently used for bidders.

Members

Field Scope Type Description
id all int The member's id.

Tags

Information associated with the ad tag.

Auction data

Field Scope Type Description
auction_id_64 all int The ID of the auction. This is useful for reconciliation and discrepancies, so we recommend that you add it to your logs. This is not guaranteed to be unique.

Inventory hierarchy data

Field Scope Type Description
id some int The ID of the TinyTag. A a tag is a subset of inventory within a site. Bidders cannot lookup what tag the ID corresponds to, but these IDs can be used as anonymous, optimizeable chunks of inventory.
site_id some int The ID of the site. Sites are the second-largest groupings of inventory for members that sell their inventory through AppNexus. A site is a subset of inventory for a publisher. Bidders cannot lookup what site the ID corresponds to, but these IDs can be used as anonymous, optimizeable chunks of inventory.

General data

Field Scope Type Description
size all string A size (widthxheight; e.g. 300x160) for this impression.
sizes all array of strings Allowable creative sizes for this impression, given in "widthxheight" format.
position all enum("below","above","unknown") Position of the ad on the page above or below the fold; taken from the tag, if available.
tag_format some enum("iframe", "js", "wp7", "vast", "json", "xml") For "iframe" tags, the impression bus will return HTML to display the winning creative on the publisher's page (if necessary, the HTML will contain an IFrame tag.) For "js" tags, the impression bus will return javascript to be executed on the publisher's page. (The javascript returned will typically contain document.write commands to generate the HTML for displaying the creative.) This distinction is only relevant to bidders in the case where a creative will not display properly in one or more tag formats.
allowed_media_types some array of integers Valid media types. Use the Media Type Service for a list of IDs.
allowed_media_subtypes some array of integers Valid media subtype IDs. Use the Media Subtype Service for a list of IDs.
media_subtypes some array of strings Valid media subtypes for a creative, in string format.
inventory_audits some array Seller self-classification data about the content of the site.
venue_id some int This field is not currently used for bidders.
ad_profile_id some int The tag-level ad approval profile ID that applies for the impression for the particular tag.
predicted_view_rate all double The probability that the impression will be viewable by the user, based on historical data.

Pricing data

Field Scope Type Description
reserve_price some float When provided, this is the minimum bid necessary to win the auction. If the bidding member owns the inventory (allow_exclusive = true), this is ignored.
estimated_clear_price some double The ECP is the estimated price needed to win the inventory. The ECP is larger than 95% of all winning bids for this tag submitted through AppNexus.

Note: Significant % of winning bids for any tag may not be submitted through AppNexus.

See Price Reduction Mechanics for details.
estimated_average_price some double The EAP is similar to the ECP, except that the EAP is larger than 70% of all winning bids for this tag submitted through AppNexus.
estimated_price_verified some Boolean This field indicates whether the EAP and ECP have been verified by data observed by AppNexus.

Owner-specific data

Field Scope Type Description
tag_data owned only string If available, the other information associated with this TinyTag ID. The TinyTag's owner may add this information to the TinyTag in advance of an auction.
exclusive_default owned only Boolean Indicates whether or not the auction is exclusive by default. An exclusive auction is one in which only the placement owner can serve an ad. The exclusive default may be overridden by the owner during the owner phase of the auction.
default_creative_id owned only int The default creative ID for this TinyTag.

Mobile-specific fields

Field Scope Type Description
supply_type some Always sent for "mobile_app" (not sent for "web") Distinguishes whether this inventory is Web, Mobile Browser, or Mobile App. To determine if a web impression is being viewed on a mobile device, use the operating system in the bid request.
creative_formats some One or more of "text", "image", "html-url", "js-url", "flash", "js-raw", "html-raw", "html-iframe", "url-vast", "xml-url", "file-url", unknown" List of AppNexus creative formats that can be used to bid on the impression. Other formats may be added to this list as they become supported.
creative_actions some One or more of "click-to-web", "click-to-call" List of allowable click actions of creatives that can be used to bid on this impression. Today, click-to-call is not available but will be available soon. Other actions may be added to this list as they become supported.
smaller_sizes_allowed some Boolean True if creatives of a smaller size and text creatives may also be used to bid for the impression.

Deal data

Field Scope Type Description
deals some array of objects An array of deals that apply to the impression. See Deals for more information.

Deals

Each object in the deals array contains the following fields.

Field Type Description
ad_quality_override int Specifies how the deal handles creatives:
- 1: Creatives use existing ad quality settings. (Default)
- 2: Creatives in "pending" audit status will serve. Once these creatives are audited, the existing ad quality settings are used.
- 3: No ad profile restrictions will be applied to this deal. (Maximum trust)
allowed_media_subtypes array of integers. Specifies the IDs of the media subtypes that are allowed on this deal. Use the Media Subtype Service to view a list of media subtypes. If there are no unique media subtypes for this deal as compared to the main bid request object, this field will be an empty array. This does NOT mean the deal does not allow any media subtypes, instead it just means that the media subtypes on the main bid object should be used when bidding on this deal.
allowed_media_types array of integers. Specifies the IDs of the media types that are allowed on this deal. Use the Media Type Service to view a list of media types. If there are no unique media types for this deal as compared to the main bid request object, this field will be an empty array. This does NOT mean the deal does not allow any media types, instead it just means that the media types on the main bid object should be used when bidding on this deal.
floor_cpm double The price the seller has set for the deal. Use this amount plus any applicable fees as your minimum bid in order to compete for this inventory. Note that bidding this amount plus any applicable fees will help ensure that you are eligible for the deal but will not guarantee that your bid wins.
This amount will always be in US dollars. Ask prices entered in another currency will be converted to dollars.
id int The ID of the deal that applies to the impression. You can use the Deal Buyer Access Service to view the deal's details including deal name, description, start and end date, and associated inventory.
member_id int The ID of the buyer member for whom the deal was created.
sizes array of strings. Allowable creative sizes for this deal, given in "widthxheight" format. If there are no unique sizes for this deal as compared to the main bid request object, this field will be an empty array. This does NOT mean the deal does not allow any sizes, instead it just means that the sizes on the main bid object should be used when bidding on this deal.

Bid_Info

Information on the user and the overall bid request.

User

Field Scope Type Description
user_id_64 all int The unique 64-bit ID for the user. It will be the same for all requests from this user until cookies are cleared.

Note: This value is only populated when the field no_cookies is false.

This field is 0 when AppNexus does not have a match for this user or the user's browser doesn't accept cookies. It will be -1 for opt-out users.
user_agent some string The "User-Agent" header from the browser. (In other words the type of browser.)
operating_system some int The ID of the user's operating system. You can use the Operating System Service to map operating system IDs to names.
browser some int The ID of the user's browser. You can use the Browser Service to map browser IDs to names.
accepted_languages some string The "Accept-Language" header from the browser (using ISO-639 language and ISO-3166 country codes).
language some int The ID of the language as parsed from the accepted_languages string. You can use the Language Service to map languages to names.
no_flash all boolean Informs the bidder if we have detected that the user's browser does not have flash installed.
no_cookies all boolean If the no_cookies field is set to false
- AppNexus is able to track the user via a user id that is placed in a cookie in the user's browser.
- The user id will be contained in the user_id_64 field on the bid request.

If the no_cookies field is set to true AND the user_id_64 field is set to 0
- AppNexus is not able to track the user since the user's browser does not accept cookies.
- You should not bid for such an auction on behalf of campaigns that require user data (e.g. frequency capping, recency capping).

If the no_cookies field is set to true AND the user_id_64 field is nonzero
- AppNexus is able to track the user via cookies, and the user_id_64 field contains the user id.
- However, a problem occurred while looking up user information in the AppNexus server-side user data store.
- As a result, the bid request will not include user data, nor can AppNexus reliably update user data based on commands sent in the bid response.
- You should not bid for such an auction on behalf of campaigns that require user data (e.g. frequency capping, recency capping).
gender some enum "male" or "female" - This data may be supplied by the publisher at auction time.
age some int This data may be supplied by the publisher at auction time.
segments all array of objects. An array of the segments the user is in. Segments available include those owned by your members and those owned by 3rd party data providers (to whom AppNexus has granted your bidder access). Described in more detail below.
session_freq all int The number of impressions AppNexus has served this user for the duration of the browsing session. For these purposes, a browsing session is defined as the lifetime of the user's AppNexus cookie.
pub_session_freq all int The number of impressions AppNexus has served this user, on this publisher, for the duration of the browsing session. For these purposes, a browsing session is defined as the lifetime of the user's AppNexus cookie.

Geographical data

Field Scope Type Description
ip_address all string The IP address of the user.
country some string The country of the user based on IP address, if it can be determined.
region some string The region (state/province) of the user based on IP address, if it can be determined.
city some string The city of the user based on IP address.
postal_code_id some int The ID of the postal code of the user, based on IP address.
dma some int Code for the designated market area of the user based on IP address, if it can be determined.
time_zone some string The time zone of the user based on IP address, if it can be determined.
Field Scope Type Description
userdata_json some The userdata attached to the user's cookie stored by the bidder receiving the request.
total_clicks some int This field has been deprecated.

Inventory (page) information

Field Scope Type Description
selling_member_id all int The ID of the member selling the inventory. See Platform Member Service to find the corresponding member names.
url some string The referral URL (contains the ad / launches the ad request). This is always provided if available, unless the publisher has chosen to restrict its use. A publisher may also opt to configure a default referrer url in AppNexus that will be passed on the bid request in the event that the referrer is not available or the publisher has chosen to restrict its use. Contact your AppNexus technical representative for more information.
domain some string The domain of the referral URL.
inventory_audits some array AppNexus audit data about the content of the site. Audits on bid_info pertain to all tags in the auction. This info often comes from a domain-level audit. Described in more detail below.
within_iframe all boolean If the tag sits on the page with no enclosing iframes, this is 'true'. Note that if AppNexus is unable to determine whether the tag is wrapped, this will be 'false'.
publisher_id some int The ID of the publisher. Publishers are used as the largest groupings of inventory for members that sell their inventory through AppNexus. Bidders cannot lookup what publisher the ID corresponds to, but these IDs can be used as anonymous, optimizeable chunks of inventory.
is_secure some boolean If the page is secure, this is true.

Note: All connections to secure inventory must be secure. This includes pixels, creatives and 3rd party calls. (i.e. for a creative: https://mysecure.content.com/ad/ABC.123.com/DEF.40;sz=300x250) \\)
certified_supply some boolean Deprecated.

Mobile-specific fields

Field Scope Type Description
app_id some string Global App Id for Android and iOS devices (For example, for Angry Birds app: "app_id": "com.rovio.angrybirds" for an Android device, "app_id" : "343200656" or "com.clickgamer.AngryBirds" for an iOS device).
loc some string Location of the user, provided in terms of latitude and longitude. Expressed in the format "snnn.ddd,snnn.ddd", for example +123.456 or -456.123. South and west are represented as negative. There can be a maximum of 5 decimal places of precision.
carrier some int Identifier for the carrier. A mapping of IDs to carrier names and countries will be available from the carrier read-only service. A special carrier "WIFI" will exist for users connecting via WiFi.
device_make some int The ID of the device make on which the ad will be shown. You can use this to manufacturer of the device on which the ad will be shown. For more information see the Device Make Service.
device_model some int The ID of the device model on which the ad will be shown. For more information, see the Device Model Service.
device_type some int The ID of the type of device on which the ad will be shown. This is represented by an integer, and can be looked up using the Device Model Service. Allowed values, and their meanings:
- 1 = "pc"
- 2 = "phone"
- 3 = "tablet"
device_ids some object A JSON object containing information about the device IDs associated with the impression up for bid. For more information, see Device IDs.

Device IDs

Field Scope Type Description
aaid some string The Google advertising identifier for Android devices as retrieved from Google Play services.
idfa some string The Apple advertising identifier for iOS devices running iOS 6+.
md5udid some string The MD5 hash of the ANDROID_ID. This should only be sent for Android devices. It should be URL encoded.
openudid some string The OpenUDID of the device. This should only be sent for iOS versions 5 and below.
sha1mac some string ODIN. This should only be sent for iOS versions 5 and below. This should be URL encoded
sha1udid some string The SHA1 hash of the ANDROID_ID. This should only be sent for Android devices. It should be URL encoded.

Segments

An array of the segments the user is in. Segments available include those owned by your members and those owned by 3rd party data providers (to whom AppNexus has granted your bidder access).

Field Scope Type Description
code some string See Pixel Services for details.
id all int Segment ID.
last_seen_min all int The number of minutes since this user was last tagged with this segment. Given in Posix time (represented in minutes). Multiply this value by 60 to get the number of seconds since the epoch when this segment was updated.
member_id all int ID of the member associated with this Segment.
other some int The value of the segment, if the segment contains a value.

Inventory audits

Field Scope Type Description
auditor_member_id all int ID of the member who provided this audit. If this field is null, the audit was performed by the Platform Operations team.
content_categories some array of integers. IDs of content categories of the site. To get the meaningful names of specific content categories or for the full list, see Content Category Service.

Note: You may see ids in this list that are not visible to you in the content-category service.
intended_audience some enum general, children, young_adult, or mature. Indicates the target maturity level of readers of this website.
inventory_attributes some array of integers. IDs of sensitive attributes of the site that some advertisers may opt not to run on. To get the meaningful names of specific attributes or for the full list, see Inventory Attribute Service. The presence of an empty array in this field indicates that the site has been audited and found to have no sensitive attributes.

Example

Single tag request

{
    "bid_request": {
        "timestamp": "2015-06-07 14:39:35",
        "bidder_timeout_ms": 100,
        "members": [
            {
                "id": 6
            },
            {
                "id": 12
            }
        ],
        "allow_exclusive": false,
        "debug_requested": false,
        "tags": [
            {
                "id": 13,
                "sizes": [
                    "728x90"
                ],
                "position": "unknown",
                "inventory_source_id": 476,
                "auction_id_64": 8984480746668973000,
                "tag_format": "iframe",
                "reserve_price": 1,
                "ad_profile_id": 382,
                "predicted_view_rate": 0.654321,
                "inventory_audits": [
                    {
                        "auditor_member_id": 3,
                        "inventory_attributes": [
                            1431,
                            1432,
                            1887
                        ],
                        "content_categories": [
                            171
                        ]
                    }
                ]
            }
        ],
        "bid_info": {
            "user_id_64": 2987961585469200400,
            "no_flash": false,
            "no_cookies": false,
            "ip_address": "96.246.152.18",
            "inventory_audits": [
                {
                    "auditor_member_id": null,
                    "intended_audience": "young_adult",
                    "inventory_attributes": [
                        2,
                        3,
                        6,
                        7
                    ],
                    "content_categories": [
                        39
                    ]
                }
            ],
            "user_agent": "Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US;rv:1.9.0.3) Gecko/2008092414 Firefox/3.0.3",
            "accepted_languages": "en-US,en;q=0.8",
            "country": "US",
            "region": "NY",
            "city": "New York",
            "postal_code_id": "10014",
            "dma": 501,
            "time_zone": "America/New_York",
            "url": "https://www.foodandwine.com/recipes/",
            "domain": "foodandwine.com",
            "selling_member_id": 3,
            "inventory_source_id": 123,
            "inventory_class": "class_2",
            "within_iframe": false,
            "total_clicks": 0,
            "segments": [
                {
                    "id": 103,
                    "member_id": 6,
                    "code": "PotentialCarBuyer",
                    "last_seen_min": 21108407
                }
            ]
        }
    }
}

Multi tag request

{
    "bid_request": {
        "timestamp": "2015-09-17 20:32:00",
        "bidder_timeout_ms": 200,
        "members": [
            {
                "id": 1513
            }
        ],
        "member_ad_profile_id": 11138,
        "tags": [
            {
                "auction_id_64": 1704399148337927200,
                "size": "120x600",
                "sizes": [
                    "120x600"
                ],
                "smaller_sizes_allowed": false,
                "position": "unknown",
                "tag_format": "js",
                "site_id": 188164,
                "creative_formats_map": "1111111110",
                "creative_formats": [
                    "unknown",
                    "html-url",
                    "js-url",
                    "flash",
                    "image",
                    "js-raw",
                    "html-raw",
                    "html-iframe",
                    "url-vast"
                ],
                "ad_profile_id": 201859,
                "ad_profiles": [
                    201859
                ],
                "visibility_profile_id": 132,
                "venue_id": 12043,
                "predicted_view_rate": 0.675,
                "allowed_media_types": [
                    1
                ],
                "allowed_media_subtypes": [],
                "ecp": 1.43206,
                "eap": 0.5,
                "id": 624139,
                "inventory_audits": [
                    {
                        "auditor_member_id": null,
                        "intended_audience": "general",
                        "inventory_attributes": [],
                        "content_categories": []
                    }
                ]
            },
            {
                "auction_id_64": 3898100382999990000,
                "size": "5x6",
                "sizes": [
                    "5x6"
                ],
                "smaller_sizes_allowed": false,
                "position": "unknown",
                "tag_format": "js",
                "site_id": 188164,
                "creative_formats_map": "1111111110",
                "creative_formats": [
                    "unknown",
                    "html-url",
                    "js-url",
                    "flash",
                    "image",
                    "js-raw",
                    "html-raw",
                    "html-iframe",
                    "url-vast"
                ],
                "ad_profile_id": 201859,
                "ad_profiles": [
                    201859
                ],
                "visibility_profile_id": 132,
                "venue_id": 12043,
                "predicted_view_rate": 0.7131,
                "allowed_media_types": [
                    1
                ],
                "allowed_media_subtypes": [],
                "ecp": 2.07576,
                "eap": 0.5,
                "id": 624139,
                "inventory_audits": [
                    {
                        "auditor_member_id": null,
                        "intended_audience": "general",
                        "inventory_attributes": [
                            14
                        ],
                        "content_categories": []
                    }
                ]
            }
        ],
        "bid_info": {
            "user_id_64": 488125638053592500,
            "no_cookies": false,
            "payment_rule_id": 91411,
            "selling_member_id": 681,
            "no_flash": false,
            "user_agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_4) AppleWebKit/537.1 (KHTML, like Gecko) Chrome/21.0.1180.89 Safari/537.1",
            "browser": 8,
            "operating_system": 11,
            "language": 1,
            "accepted_languages": "en-US,en;q=0.8",
            "session_freq": 75,
            "pub_session_freq": 15,
            "ip_address": "207.27.32.2",
            "country": "US",
            "region": "NY",
            "city": "New York",
            "dma": 501,
            "time_zone": "America/New_York",
            "inventory_class": "unaudited",
            "within_iframe": false,
            "publisher_id": 89400,
            "url": "https://www.foodandwine.com/recipes/",
            "domain": "www.foodandwine.com",
            "inventory_audits": [
                {
                    "auditor_member_id": null,
                    "inventory_attributes": [],
                    "content_categories": []
                }
            ],
            "userdata_json": "{}",
            "segments": []
        }
    }
    }

Mobile request (debugging mode)

{
    "bid_request": {
        "timestamp": "2015-08-23 14:27:08",
        "bidder_timeout_ms": 2000,
        "members": [
            {
                "id": 307
            },
            {
                "id": 308
            }
        ],
        "single_phase": true,
        "member_ad_profile_id": 8610,
        "tags": [
            {
                "auction_id_64": 5638094169507807000,
                "size": "728x90",
                "sizes": [
                    "728x90"
                ],
                "smaller_sizes_allowed": true,
                "position": "unknown",
                "tag_format": "wp7",
                "site_id": 173564,
                "supply_type": "mobile_app",
                "creative_formats_map": "0000100001",
                "creative_formats": [
                    "image",
                    "text"
                ],
                "visibility_profile_id": 129,
                "venue_id": 663,
                "predicted_view_rate": 0.6891,
                "inventory_source_id": 926,
                "allowed_media_subtypes": [
                    1
                ],
                "estimated_clear_price": 1.24481,
                "estimated_average_price": 0.167,
                "estimated_price_verified": true,
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