Bid Request objects and parameters

The BidRequest object is the root of an OpenRTB request. It contains all the attributes required to describe the ad opportunity, the environment, the user, and any additional context needed for bidding.

1. bidrequest object

Attribute	Type	Required	Description
id	string	Required	ID of the bid request, assigned by the exchange, and unique for the exchange’s subsequent tracking of the responses. The exchange may use different values for different recipients.
imp	object array	Required	Array of Imp objects representing the impressions offered. At least 1 Imp object is required.
site	object	Required	Details via Site object about the publisher’s website. Only applicable and required for websites.
app	object	Required	Details via App object about the publisher’s app (i.e., non-browser applications). Only applicable and required for apps.
device	object	Required	Details via a Device object about the user’s device to which the impression will be delivered.
user	object	Required	Details via a User object about the human user of the device; the advertising audience.
test	integer; default 0	Optional	Indicator of test mode in which auctions are not billable, where 0 = live mode, 1 = test mode.
at	integer; default 2	Optional	Auction type, where 1 = First Price, 2 = Second Price. We only support 2 = Second Price (other values are overridden before broadcasting to demand partners).
tmax	integer	Recommended	Maximum time in milliseconds the exchange allows for bids to be received including Internet latency to avoid timeout. This value supersedes any a priori guidance from the exchange. tmax > 470 ms is recommended for optimal monetization.
cur	string array	Optional	Array of allowed currencies for bids on this bid request (refer to Supported Currencies). If no currency is specified, default is USD.
acat	string array	Optional	Allowed advertiser categories using the specified category taxonomy. The taxonomy to be used is defined by the cattax field. If no cattax field is supplied IAB Content Taxonomy 1.0 is assumed. Only one of acat or bcat should be present.
bcat	string array	Optional	Blocked advertiser categories using the specified category taxonomy. The taxonomy to be used is defined by the cattax field. If no cattax field is supplied IAB Content Taxonomy 1.0 is assumed. Only one of acat or bcat should be present.
cattax	integer; default 1	Optional	The taxonomy in use for bcat. Refer to the AdCOM 1.0 list List: Category Taxonomies for values. Values other than 1 are strongly discouraged, please contact your CSM if you use them.
badv	string array	Optional	Block list of advertisers by their domains (e.g., “ford.com”). A maximum of 50 domains can be blocked.
bapp	string array	Optional (App only)	Block list of applications by their app store IDs. For mobile apps in Google Play Store, these should be bundle or package names (e.g. com.foo.mygame). For apps in Apple App Store, these should be a numeric ID.
source	object	Recommended	A source object that provides data about the inventory source and which entity makes the final decision.
regs	object	Required, if applicable	A regs object that specifies any industry, legal, or governmental regulations in force for this request.
ext	object	Optional	Placeholder for exchange-specific extensions to OpenRTB.
ext.placementtype	string	Optional	Indicates whether the user receives a reward for viewing the ad, when set to "rewarded". Refer to Rewarded Adsfor all means to signal rewarded inventory.

2. source object

Field	Type	Req	Description
fd	integer	Recommended	Denotes who makes the final sell decision: 0 = exchange, 1 = upstream platform (e.g., header bidding). Usually this should be set to 1.
tid	string	Recommended	Transaction ID shared across all participants in the bid request.
schain	object	Recommended	IAB SupplyChain object outlining the full supply path and completeness. Refer to official documentation for more information
ext	object	Optional	Placeholder for exchange-specific extensions to OpenRTB.
ext.omidpn	string	Recommended	Identifier of the OM SDK integration. This is the same as the “name” parameter of the OMID Partner object.
ext.omidpv	string	Recommended	Version of the OM SDK integration. This is the same as the “versionString” parameter of the OMID Partner object.

3. regs object

Field	Type	Req	Description
coppa	integer	Required, if applicable	1 if COPPA applies (for children under 13), 0 otherwise. Refer to section 7.5 in official documentation.
gdpr or ext.gdpr	integer	Required, if applicable	1 if GDPR applies (EU/UK user), 0 if not. If 1, do fill user.consent (refer to 15. user object ).
us_privacy or ext.us_privacy	string	Required, if applicable	CCPA/US-privacy consent string. See IAB US Privacy String specifications.
gpp	string	Required, if applicable	Contains the Global Privacy Platform’s consent string. See the Global Privacy Platform specification for more details.
gpp_sid	integer array	Optional	Array of the section(s) of the string which should be applied for this transaction. Generally will contain one and only one value, but there are edge cases where more than one may apply. See the GPP Section Information for more details.

4. imp object

Field	Type	Required	Description
id	string	Required	A unique identifier for this impression within the content of the bid request (typically, starts with 1 and increments).
tagid	string	Required	Identifier for specific ad placement or ad tag that was used to initiate the auction. Refer to TagID Limits and Guidelines for constraints.
metric	object array	Recommended	An array of Metric object. These metrics can offer insight into the impression to assist with decisioning such as average recent viewability, click-through rate, etc. Refer to official documentation for more information
banner	object	Required if banner ad	A banner object is required if this impression is offered as a banner ad opportunity.
video	object	Required if video ad	A video object is required if this impression is offered as a video ad opportunity.
native	object	Required if native ad	A native object is required if this impression is offered as a native ad opportunity.
displaymanager	string	Recommended	Name of ad mediation partner, SDK technology, or player responsible for rendering ad (typically video or mobile). Used by some ad servers to customize ad code by partner. Recommended for video and/or apps.
displaymanagerver	string	Recommended	Version of ad mediation partner, SDK technology, or player responsible for rendering ad (typically video or mobile). Used by some ad servers to customize ad code by partner. Recommended for video and/or apps.
instl	integer; default 0	Recommended	1 = the ad is interstitial or full screen, 0 = not interstitial. For video mediatype, if instl = 1, plcmt should be equal to 3
bidfloor	float; default 0	Optional	Minimum bid for this impression expressed in CPM.
bidfloorcur	string; default "USD"	Optional	Currency specified using ISO-4217 alpha codes. This may be different from bid currency returned by bidder if this is allowed by the exchange. This currency sets the default for all floors specified in the Imp object. Refer to Supported Currencies.
clickbrowser	integer	Optional	Indicates the type of browser opened upon clicking the creative in an app, where 0 = embedded, 1 = native. Note that the Safari View Controller in iOS 9.x devices is considered a native browser for purposes of this attribute.
secure	integer	Optional	Flag to indicate if the impression requires secure HTTPS URL creative assets and markup, where 0 = non-secure, 1 = secure. If omitted, the secure state is unknown, but non-secure HTTP support can be assumed.
rwdd	integer; default 0	Optional	Indicates whether the user receives a reward for viewing the ad, where 0 = no, 1 = yes. Refer to Rewarded Adsfor all means to signal rewarded inventory.
ssai	integer; default 0	Optional	Indicates if server-side ad insertion (e.g., stitching an ad into an audio or video stream) is in use and the impact of this on asset and tracker retrieval, where 0 = status unknown, 1 = all client-side (i.e., not server-side), 2 = assets stitched server-side but tracking pixels fired client-side, 3 = all server-side.
exp	integer	Recommended	Advisory as to the number of seconds that may elapse between the auction and the actual impression.
dt	float	Optional	Timestamp when the item is estimated to be fulfilled (e.g. when a DOOH impression will be displayed) in Unix format (i.e., milliseconds since the epoch).
ext	object	Optional	Placeholder for exchange-specific extensions to OpenRTB.
ext.gpid	string	Recommended	Global Placement ID (cf. The TradeDesk's doc).
ext.rewarded	integer	Optional	Indicates whether the user receives a reward for viewing the ad, where 0 = no, 1 = yes. Refer to Rewarded Adsfor all means to signal rewarded inventory.
ext.is_rewarded_inventory	integer	Optional	Indicates whether the user receives a reward for viewing the ad, where 0 = no, 1 = yes. Refer to Rewarded Ads for all means to signal rewarded inventory.
ext.skadn	object	Recommended (for iOS App only)	If a DSP has at least one SKAdNetworkItem in the publisher app’s Info.plist we would include a new object in the bid request that provides the necessary information to create a signature. Object would only be present if the OS version (iOS 14.0+) supports SKAdNetwork. Refer to IAB Community Extensions docs for more information and our section below.

5. banner object

Field	Type	Required	Description
format	object array	Recommended	Array of format objects representing the banner sizes permitted. If none are specified, then use of the h and w attributes is highly recommended.
w	integer	Recommended if no format	Exact width in device-independent pixels (DIPS); recommended if no Format objects are specified.
h	integer	Recommended if no format	Exact height in device-independent pixels (DIPS); recommended if no Format objects are specified.
btype	integer array	Optional	Blocked banner ad types. Values: 1 = XHTML Text Ad, 2 = XHTML Banner Ad, 3 = JavaScript Ad, 4 = iframe.
battr	integer array	Optional	Blocked creative attributes. Refer to List: Creative Attributes in AdCOM 1.0. A maximum of 50 attributes can be specified.
pos	integer	Optional	Ad position on screen. Refer to List: Placement Positions in AdCOM 1.0.
mimes	string array	Optional	Content MIME types supported. Popular MIME types may include “image/jpeg” and “image/gif”.
topframe	integer	Optional	Indicates if the banner is in the top frame as opposed to an iframe, where 0 = no, 1 = yes.
expdir	integer array	Optional	Directions in which the banner may expand. Refer to List: Expandable Directions in AdCOM 1.0.
api	integer array	Recommended	List of supported API frameworks for this impression. Refer to List: API Frameworks in AdCOM 1.0. If an API is not explicitly listed, it is assumed not to be supported. Defaults to [1.0] unless both imp.ext.omidpn and imp.ext.omidpv are missing, in which case api is removed (cf. Open Measurement (OMID))
id	string	Recommended if used with video as companion	Unique identifier for this banner object. Recommended when Banner objects are used with a Video object (Section 6. video object) to represent an array of companion ads. Values usually start at 1 and increase with each object; should be unique within an impression.
vcm	integer	Optional	Relevant only for Banner objects used with a Video object (Section 6. video object) in an array of companion ads. Indicates the companion banner rendering mode relative to the associated video, where 0 = concurrent, 1 = end-card.
ext	object	Optional	Placeholder for exchange-specific extensions to OpenRTB.

6. video object

Attribute	Type	Required	Description
mimes	string array	Required	Content MIME types supported (e.g., "video/mp4"). When omitted, Adagio will fallback to ["video/mp4","video/webm"].
minduration	integer; default 1	Recommended	Minimum video ad duration in seconds. This field is mutually exclusive with rqddurs; only one of minduration and rqddurs may be in a bid request.
maxduration	integer; default 100	Recommended	Maximum video ad duration in seconds. This field is mutually exclusive with rqddurs; only one of maxduration and rqddurs may be in a bid request.
startdelay	integer; default 0	Recommended	Indicates the start delay in seconds for pre-roll, mid-roll, or post-roll ad placements. Refer to List: Start Delay Modes in AdCOM 1.0.
protocols	integer array	Recommended	Array of supported video protocols. Refer to List: Creative Substypes - Audio/Video in AdCOM 1.0.
w	integer	Recommended	Width of the video player in device-independent pixels (DIPS).
h	integer	Recommended	Height of the video player in device-independent pixels (DIPS).
placement	integer; DEPRECATED	Deprecated	Video placement type for the impression. Refer to Section 5.9 of oRTB 2.5 specs. Deprecated as of OpenRTB 2.6-202303. Use plcmt instead.
plcmt	integer	Recommended	Video placement type for the impression. Refer to List: Plcmt Subtypes - Video in AdCOM 1.0.
linearity	integer	Optional (Recommended if linearity = 1)	Indicates if the impression must be linear, nonlinear, etc. If none specified, assume all are allowed. Refer to List: Linearity Modes in AdCOM 1.0. Note that this field describes the expected VAST response and not whether a placement is in-stream, out-stream, etc. For that, see plcmt.
skip	integer	Optional	Indicates if the player will allow the video to be skipped, where 0 = no, 1 = yes. If a bidder sends markup/creative that is itself skippable, the Bid object should include the attr array with an element of 16 indicating skippable video. Refer to List: Creative Attributes in AdCOM 1.0.
skipmin	integer; default 0	Optional	Videos of total duration greater than this number of seconds can be skippable; only applicable if the ad is skippable.
skipafter	integer; default 0	Optional	Number of seconds a video must play before skipping is enabled; only applicable if the ad is skippable.
sequence	integer; default 0 DEPRECATED	Deprecated	Deprecated as of OpenRTB 2.6. Use slotinpod
battr	integer array	Optional	Blocked creative attributes. Refer to List: Creative Attributes in AdCOM 1.0.
maxextended	integer	Optional	Maximum extended ad duration if extension is allowed. If blank or 0, extension is not allowed. If -1, extension is allowed, and there is no time limit imposed. If greater than 0, then the value represents the number of seconds of extended play supported beyond the maxduration value.
minbitrate	integer	Optional	Minimum bit rate in Kbps (kilobits per second). Default is 10 if not defined in the request.
maxbitrate	integer	Optional	Maximum bit rate in Kbps (kilobits per second). Default is 3000 is not defined in the request
boxingallowed	integer; default 1	Optional	Indicates if letter-boxing of 4:3 content into a 16:9 window is allowed, where 0=no, 1=yes.
playbackmethod	integer array	Optional	Playback methods that may be in use. If none are specified, any method may be used. Refer to List: Playback Methods in AdCOM 1.0. Only one method is typically used in practice. As a result, this array may be converted to an integer in a future version of the specification. It is strongly advised to use only the first element of this array in preparation for this change.
playbackend	integer	Optional	The event that causes playback to end. Refer to List: Playback Cessation Modes in AdCOM 1.0.
delivery	integer array	Optional	Supported delivery methods (e.g., streaming, progressive). If none specified, assume all are supported. Refer to List: Delivery Methods in AdCOM 1.0.
pos	integer	Optional	Ad position on screen. Refer to List: Placement Positions in AdCOM 1.0.
companionad	object array	Optional	Array of banner objects if companion ads are available.
api	integer array	Recommended	List of supported API frameworks for this impression. Refer to List: API Frameworks in AdCOM 1.0. If an API is not explicitly listed, it is assumed not to be supported. Defaults to [1.0] unless both imp.ext.omidpn and imp.ext.omidpv are missing, in which case api is removed (cf. Open Measurement (OMID))
companiontype	integer array	Recommended if companionad not empty	Supported VAST companion ad types. Refer to List: Companion Types in AdCOM 1.0. Recommended if companion Banner objects are included via the companionad array. If one of these banners will be rendered as an end-card, this can be specified using the vcm attribute with the particular banner (Section 3.2.6).
ext	object	Optional	Placeholder for exchange-specific extensions to OpenRTB.
ext.rewarded	integer	Optional	Indicates whether the user receives a reward for viewing the ad, where 0 = no, 1 = yes. Refer to Rewarded Adsfor all means to signal rewarded inventory.
ext.is_rewarded	integer	Optional	Indicates whether the user receives a reward for viewing the ad, where 0 = no, 1 = yes. Refer to Rewarded Adsfor all means to signal rewarded inventory.
ext.videotype	string	Optional	Indicates whether the user receives a reward for viewing the ad, when set to "rewarded". Refer to Rewarded Adsfor all means to signal rewarded inventory.
ext.placementtype	string	Optional	Indicates whether the user receives a reward for viewing the ad, when set to "rewarded". Refer to Rewarded Adsfor all means to signal rewarded inventory.

7. native object

FIeld	Type	Required	Description
request	string	Required	Request payload complying with the Native Ad Specification. The root node of the payload, "native", was dropped in the Native Ads Specification 1.1. For Native 1.0, this is a JSON-encoded string consisting of a unnamed root object, with a single subordinate object named 'native', which is the Native Markup Request object, section 4.1 of OpenRTB Native 1.0 specification. For Native 1.1 and higher, this is a JSON-encoded string consisting of an unnamed root object which is itself the Native Markup Request Object, section 4.1 of OpenRTB Native 1.1+ .
ver	string	Recommended	Version of the Dynamic Native Ads API to which request complies; highly recommended for efficient parsing.
api	integer array	Recommended	List of supported API frameworks for this impression. Refer to List: API Frameworks in AdCOM. If an API is not explicitly listed, it is assumed not to be supported. Defaults to [1.0] unless both imp.ext.omidpn and imp.ext.omidpv are missing, in which case api is removed (cf. Open Measurement (OMID)).
battr	integer array	Optional	Blocked creative attributes. Refer to List: Creative Attributes in AdCOM.
ext	object	Optional	Placeholder for exchange-specific extensions to OpenRTB.

8. format object

It is recommended that either the w/h pair or the wratio/hratio/wmin set (i.e., for Flex Ads) be specified.

Field	Type	Required	Description
w	integer	Recommended	Width in device-independent pixels (DIPS).
h	integer	Recommended	Height in device-independent pixels (DIPS).
wratio	integer	Recommended	Relative width when expressing size as a ratio.
hratio	integer	Recommended	Relative height when expressing size as a ratio.
wmin	integer	Recommended	The minimum width in device-independent pixels (DIPS) at which the ad will be displayed the size is expressed as a ratio.
ext	object	Optional	Placeholder for exchange-specific extensions to OpenRTB.

9. site object

This object should be included if the ad supported content is a website.

Attribute	Type	Required	Description
id	string	Recommended	Exchange-specific site ID
name	string	Optional	Site name (may be aliased at the publisher's request).
domain	string	Required	Domain of the site (e.g., "mysite.foo.com").
cat	string array	Recommended	Array of IAB Tech Lab content categories of the site. The taxonomy to be used is defined by the cattax field.
sectioncat	string array	Optional	Array of IAB Tech Lab content categories that describe the current section of the site. The taxonomy to be used is defined by the cattax field.
pagecat	string array	Optional	Array of IAB Tech Lab content categories that describe the current page or view of the site. The taxonomy to be used is definied by the cattax field.
page	string	Recommended	URL of the page where the impression will be shown.
ref	string	Optional	Referrer URL that caused navigation to the current page.
search	string	Optional	Search string that caused navigation to the current page.
mobile	integer	Optional	Indicates if the site has been programmed to optimize layout when viewed on mobile devices, where 0=no, 1=yes.
privacypolicy	integer	Recommended	Indicates if the site has a privacy policy, where 0 = no, 1 = yes.
publisher	object	Required	Details about the Publisher of the site. See publisher object.
content	object	Optional	Details about the Content within the site. See content object.
keywords	string	Optional	Comma separated list of keywords about the site. Only one of keywords or kwarray may be present.
kwarray	string array	Optional	Array of keywords about the site. Only one of keywords or kwarray may be present.
inventorypartnerdomain	string	Optional	A domain to be used for inventory authorization in the case of inventory sharing arrangements between a site owner and content owner. This field is typically used by authorization crawlers to establish the domain of the content owner, who has the right to monetize some portion of ad inventory within the site. The content owner's domain should be listed in the site owner's ads.txt file as an inventorypartnerdomain. Authorization for supply from the inventorypartnerdomain will be published in the ads.txt file on the root of that domain. Refer to the ads.txt 1.1 spec for more details.
site.ext.pagetype	string	Recommended	Describes what kind of content will be present in the page. - max length: 30 - max distinctive values: 50
site.ext.category	string	Recommended	Category of the content displayed in the page. - max length: 30 - max distinctive values: 50
ext	object	Recommended cf. above pagetype and category	Placeholder for exchange-specific extensions to OpenRTB

10. app object

This object should be included if the ad supported content is a non-browser application

Attribute	Type	Required	Description
id	string	Recommended	Exchange-specific app ID.
name	string	Optional	App name.
bundle	string	Required	The store ID of the app in an app store. For mobile apps in Google Play Store, these should be bundle or package names (e.g. com.foo.mygame). For apps in Apple App Store, these should be a numeric ID (e.g. 324684580).
domain	string	Recommended	Domain of the app developer (e.g., "mygame.foo.com") on which the app-ads.txt can be found.
storeurl	string	Recommended	App store URL for an installed app; for IQG 2.1 compliance.
cattax	integer; default 1	Optional	The taxonomy in use. Refer to the AdCOM List: Category Taxonomies for values. Values other than 1 are strongly discouraged, please contact your CSM if you use them.
cat	string array	Recommended	Array of IAB Tech Lab content categories of the app. The taxonomy to be used is defined by the cattax field. If no cattax field is supplied Content Category Taxonomy 1.0 is assumed.
sectioncat	string array	Optional	Array of IAB Tech Lab content categories that describe the current section of the app. The taxonomy to be used is defined by the cattax field.
pagecat	string array	Optional	Array of IAB Tech Lab content categories that describe the current page or view of the app. The taxonomy to be used is defined by the cattax field.
ver	string	Recommended	Application version.
privacypolicy	integer	Recommended	Indicates if the app has a privacy policy, where 0 = no, 1 = yes.
paid	integer	Recommended	0 = app is free, 1 = the app is a paid version.
publisher	object	Required	Details about the Publisher of the app. See publisher object.
content	object	Optional	Details about the Content within the app. See content object.
keywords	string	Optional	Comma separated list of keywords about the app. Only one of keywords or kwarray may be present.
kwarray	string array	Optional	Array of keywords about the app. Only one of keywords or kwarray may be present.
inventorypartnerdomain	string	Optional	A domain to be used for inventory authorization in the case of inventory sharing arrangements between an app owner and content owner. This field is typically used by authorization crawlers to establish the domain of the content owner, who has the right to monetize some portion of ad inventory within the app. The content owner's domain should be listed in the app owner's app-ads.txt file as an inventorypartnerdomain. Authorization for supply from the inventorypartnerdomain will be published in the ads.txt file on the root of that domain. Refer to the ads.txt 1.1 spec for more details.
ext	object	Recommended	Placeholder for exchange-specific extensions to OpenRTB.
ext.category	string	Recommended	Category of the content displayed in the page.
ext.pagetype	string	Recommended	Describes what kind of content will be present in the page.

11. publisher object

FIeld	Type	Required	Description
id	string	Recommended	Exchange-specific seller ID. Every ID must map to only a single entity that is paid for inventory transacted via that ID. Corresponds to a seller_id of a seller in the exchange’s sellers.json file.
name	string	Optional	Seller name
cattax	integer; default 1	Optional	The taxonomy in use. Refer to the AdCOM List: Category Taxonomies for values.
cat	string array	Optional	Array of IAB Tech Lab content categories of the publisher. The taxonomy to be used is defined by the cattax field. If no cattax field is supplied Content Category Taxonomy 1.0 is assumed.
domain	string	Optional	Highest level domain of the seller (e.g., "seller.com").
ext	object	Optional	Placeholder for exchange-specific extensions to OpenRTB.

12. content object

field	Type	Description
id	string	Publisher-provided ID uniquely identifying the content.
episode	integer	Episode number.
title	string	Content title. Video Examples: “Search Committee” (television), “A New Hope” (movie), or “Endgame” (made for web). Non-Video Example: “Why an Antarctic Glacier Is Melting So Quickly” (Time magazine article).
series	string	Content series. Video Examples: “The Office” (television), “Star Wars” (movie), or “Arby ‘N’ The Chief” (made for web). Non-Video Example: “Ecocentric” (Time Magazine blog).
season	string	Content season (e.g., “Season 3”).
artist	string	Artist credited with the content.
genre	string	Genre that best describes the content (e.g., rock, pop, etc).
gtax	int; default 9	The taxonomy in use. Refer to list List: Category Taxonomies in AdCOM 1.0 for values. If no gtax field is supplied rows listed, Content Category Taxonomy 3.1 is assumed
genres	string array	Unique ID(s) for the genre of the content as listed in the taxonomy defined by the gtax field. If no gtax field is supplied, subset of rows listed in CTV Genre Mapping of Content Category Taxonomy 3.1 are assumed. See Section 7.13 of Implementation Guidance for additional detail.
album	string	Album to which the content belongs; typically for audio.
isrc	string	International Standard Recording Code conforming to ISO- 3901.
producer	object	Refer to official documentation for more information
url	string	URL of the content, for buy-side contextualization or review.
cattax	integer; default 1	The taxonomy in use. Refer to list List: Category Taxonomies in AdCOM 1.0 for values.
cat	string array	Array of IAB Tech Lab content categories that describe the content. The taxonomy to be used is defined by the cattax field. If no cattax field is supplied Content Category Taxonomy 1.0 is assumed.
prodq	integer	Production quality. Refer to List: Production Qualities in AdCOM 1.0.
context	integer	Type of content (game, video, text, etc.). Refer to List: Content Contexts in AdCOM 1.0.
contentrating	string	Content rating (e.g., MPAA).
userrating	string	User rating of the content (e.g., number of stars, likes, etc.).
qagmediarating	integer	Media rating per IQG guidelines. Refer to List: Media Ratings in AdCOM 1.0.
keywords	string	Comma separated list of keywords describing the content. Only one of keywords or kwarray may be present.
kwarray	string array	Array of keywords about the content. Only one of keywords or kwarray may be present.
livestream	integer	0 = not live, 1 = content is live (e.g., stream, live blog).
sourcerelationship	integer	0 = indirect, 1 = direct.
len	integer	Length of content in seconds; appropriate for video or audio.
language	string	Content language using ISO-639-1-alpha-2. Only one of language or langb should be present.
langb	string	Content language using IETF BCP 47. Only one of language or langb should be present.
embeddable	integer	Indicator of whether the content is embeddable (e.g., an embeddable video player), where 0 = no, 1 = yes.
data	object array	Additional content data. Each Data object (refer to IAB Section 3.2.21) represents a different data source.
network	object	Details about the network (refer to IAB Section 3.2.23) the content is on.
channel	object	Details about the channel (refer to IAB Section 3.2.24) the content is on.
ext	object	Placeholder for exchange-specific extensions to OpenRTB.

13. device object

Field	Type	Required	Description
geo	object	Recommended	Location of the device assumed to be the user’s current location defined by a Geo object
dnt	integer	Recommended	Standard “Do Not Track” flag as set in the header by the browser, where 0 = tracking is unrestricted, 1 = do not track.
lmt	integer	Recommended	“Limit Ad Tracking” signal commercially endorsed (e.g., iOS, Android), where 0 = tracking is unrestricted, 1 = tracking must be limited per commercial guidelines.
ua	string	Recommended	Browser user agent string. This field represents a raw user agent string from the browser. If present, sua will be preferred by bidders.
sua	object	Recommended	Structured user agent information defined by a UserAgent object. If both ua and sua are present in the bid request, sua should be considered the more accurate representation of the device attributes. Refer to official documentation for more information.
ip	string	Recommended	IPv4 address closest to device.
ipv6	string		IPv6 address closest to device.
devicetype	integer	Recommended	The general type of device. Refer to List: Device Types in AdCOM 1.0.
make	string	Recommended	Device make (e.g., “Apple”).
model	string	Recommended	Device model (e.g., “iPhone”).
os	string	Recommended	Device operating system (e.g., “iOS”).
osv	string	Recommended	Device operating system version (e.g., “3.1.2”).
hwv	string	Recommended	Hardware version of the device (e.g., “5S” for iPhone 5S).
h	integer	Recommended	Physical height of the screen in pixels.
w	integer	Recommended	Physical width of the screen in pixels.
ppi	integer		Screen size as pixels per linear inch.
pxratio	float	Recommended	The ratio of physical pixels to device-independent pixels (DIPS).
js	integer	Recommended	Support for JavaScript, where 0 = no, 1 = yes.
geofetch	integer	Optional	Indicates if the geolocation API will be available to JavaScript code running in the banner, where 0 = no, 1 = yes.
flashver	string	Optional	Version of Flash supported by the browser.
language	string	Recommended	Browser language using ISO-639-1-alpha-2. Only one of language or langb should be present.
langb	string	Recommended	Browser language using IETF BCP 47. Only one of language or langb should be present.
carrier	string	Recommended	Carrier or ISP (e.g., “VERIZON”) using exchange curated string names which should be published to bidders a priori.
mccmnc	string	Optional	Mobile carrier as the concatenated MCC-MNC code (e.g., “310-005” identifies Verizon Wireless CDMA in the USA). Refer to https://en.wikipedia.org/wiki/Mobile_country_code for further examples. Note that the dash between the MCC and MNC parts is required to remove parsing ambiguity. The MCC-MNC values represent the SIM installed on the device and do not change when a device is roaming. Roaming may be inferred by a combination of the MCC-MNC, geo, IP and other data signals.
connectiontype	integer	Recommended	Network connection type. Refer to List: Connection Types in AdCOM 1.0.
ifa	string	Recommended	ID sanctioned for advertiser use in the clear (i.e., not hashed) and must never be (or be based on) a hardware-specific ID but rather obtained from a call to an advertising API provided by the device's OS.
ext	object	Required See ext.ifa_type	Placeholder for exchange-specific extensions to OpenRTB.
ext.ifa_type	string	Required if ifa present	Identify the source of the IFA (cf. oRTB docs for possible values)

14. geo object

Attribute	Type	Required	Description
lat	float	Recommended	Latitude from -90.0 to +90.0, where negative is south.
lon	float	Recommended	Longitude from -180.0 to +180.0, where negative is west.
type	integer	Recommended if lat/long present	Source of location data; recommended when passing lat/lon. Refer to List: Location Types in AdCOM 1.0. When type = 2, it's highly recommended to also set ipservice.
accuracy	integer	Recommended if lat/long present and type = 1	Estimated location accuracy in meters. Note that this is the accuracy as reported from the device. Consult OS specific documentation (e.g., Android, iOS) for exact interpretation.
lastfix	integer	Optional	Number of seconds since this geolocation fix was established. Note that devices may cache location data across multiple fetches. Ideally, this value should be from the time the actual fix was taken.
ipservice	integer	Recommended if lat/long present and type = 2	Service or provider used to determine geolocation from IP address if applicable (i.e., type = 2). Refer to List: IP Location Services in AdCOM 1.0.
country	string	Recommended if lat/long omitted	Country code using ISO-3166-1-alpha-3.
region	string	Recommended if lat/long omitted	Region code using ISO-3166-2; 2-letter state code if USA.
regionfips104	string	Optional	Region of a country using FIPS 10-4 notation. While OpenRTB supports this attribute, it was withdrawn by NIST in 2008.
metro	string	Optional	Google metro code; similar to but not exactly Nielsen DMAs.
city	string	Recommended if lat/long omitted	City using United Nations Code for Trade & Transport Locations. Refer to UNECE documentation.
zip	string	Optional	ZIP or postal code.
utcoffset	integer	Optional	Local time as the number +/- of minutes from UTC.
ext	object	Optional	Placeholder for exchange-specific extensions to OpenRTB.

15. user object

Field	Type	Required	Description
buyeruid	string	Optional	Buyer-specific ID for the user as mapped by the exchange for the buyer. Shouldn't be applicable to App traffic given the absence of cookie based userID syncs.
keywords	string	Optional	Comma separated list of keywords, interests, or intent. Only one of keywords or kwarray may be present.
kwarray	string array	Optional	Array of keywords about the user. Only one of keywords or kwarray may be present.
customdata	string	Optional	Optional feature to pass bidder data that was set in the exchange’s cookie. Shouldn't be applicable to App traffic given the absence of cookie based userID syncs.
geo	object	Optional	Location of the user’s home base defined by a Geo object (Section 3.2.19). This is not necessarily their current location.
data	object array	Optional	Additional user data. Each Data object (Refer to IAB Section 3.2.21) represents a different data source.
consent or ext.consent	string	Required if regs.gdpr or regs.ext.gdpr = 1	When GDPR regulations are in effect this attribute contains the Transparency and Consent Framework’s Consent String data structure.
eids or ext.eids	object array	Recommended	Standardized way to carry external identity signals across the ad ecosystem. Refer to External IDs (EIDs)
ext	object	cf. above consent and eids	Placeholder for exchange-specific extensions to OpenRTB.

References

• OpenRTB 2.6 Spec

• OpenRTB 2.6 Community extensions

• OpenRTB 2.6 Official extensio