Zernio
Zernio
API Reference

Campaigns and Ads

Overview

Get campaign treeGETGet daily account metricsGET

Campaigns

List campaignsGETCreate a standalone campaignPOSTUpdate a campaignPUTDuplicate a campaignPOSTDelete a campaignDELETEPause or resume a campaignPUTPause or resume many campaignsPOSTAttach extension assets to a Google Search campaignPOST

Ad Sets

Live ad-set details incl. learning phaseGETUpdate an ad setPUTDuplicate an ad setPOSTDelete an ad setDELETEPause or resume a single ad setPUTList Search keywordsGET

Ads

List adsGETGet ad detailsGETCreate standalone adPOSTBoost post as adPOSTUpdate adPUTDuplicate an adPOSTCancel an adDELETEPause or resume a single adPUT

Other

Add Search keywords to an ad groupPOSTCreate a standalone ad groupPOSTCreate a Google Ads portfolio bid strategyPOSTRead a campaign's current biddingGETRead a Google campaign's device, location, and language targetingGETList ad setsGETList Google Ads portfolio bid strategiesGETList campaign-level negative keywordsGETRemove a Search keywordDELETEReplace campaign-level negative keywordsPUTPause or enable a Search keywordPATCHUpdate a Google Ads portfolio bid strategyPATCHEdit a Google campaign's device, location, or language targetingPUT
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Campaigns and Ads

Create standalone ad

Creates a paid ad with custom creative across Meta, Google Ads, Pinterest, TikTok, X/Twitter, LinkedIn, and OpenAI Ads (ChatGPT Ads). Supports three mutually-exclusive request shapes selected by the body, a legacy single-creative shape (all platforms, default), a Meta-only multi-creative shape via the creatives array (one ad set with N ads sharing budget and targeting), and an attach shape via adSetId that adds one new ad to an existing ad set, inheriting its budget, targeting, and schedule (Meta, TikTok, and LinkedIn; on LinkedIn adSetId is the existing Campaign id, and the budget, schedule, targeting and bidding fields must be omitted). Per-platform required fields, budget minimums, and video-ad rules are documented on each property below. LinkedIn creates a Single Image or Single Video Ad backed by a Direct Sponsored Content "dark post" authored by a Company Page (see organizationId); supported goals are engagement, traffic, awareness, and video_views (video ads use the video field; video_views requires a video), and traffic ads require linkUrl.

Idempotency: this endpoint is not idempotent at the platform level (a blind retry creates a second campaign/ad set/ad). Send an Idempotency-Key header to make retries safe: the first request with a given key creates the ad and we store the response; a retry with the same key replays that exact response (with Idempotent-Replayed: true) instead of creating duplicates. Reusing a key with a different body returns 422; a key whose first request is still in flight returns 409 (retry after a short backoff). Keys are scoped to your credential and expire after 24h.


PlatformsMetaGoogleTikTokLinkedInPinterestX
POST
/v1/ads/create

Authorization

bearerAuth
AuthorizationBearer <token>

API key authentication - use your Zernio API key as a Bearer token

In: header

Header Parameters

Idempotency-Key?string

Optional client-generated unique key (e.g. a UUID) that makes retries safe. Same key + same body replays the original response; same key + different body → 422; key still processing → 409.

Lengthlength <= 255

Request Body

application/json

TypeScript Definitions

Use the request body type in TypeScript.

Response Body

application/json

application/json

application/json

{  "validateOnly": true,  "results": [    {      "node": "campaign",      "status": "validated",      "reason": "string"    }  ],  "message": "string"}
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Get ad details

Returns an ad with its creative, targeting, status, and performance metrics. The `{adId}` path segment accepts any identifier dialect Zernio indexes for the ad: - the Zernio internal `_id` (24-char hex) - Meta's numeric `platformAdId` (the value shipped in `comment.received` webhooks as `comment.ad.id`) - the creative's `effective_object_story_id` (`{pageId}_{postId}` shape, Facebook side) - the creative's `effective_instagram_media_id` (Instagram side) Any of the four resolve to the same ad. Caller doesn't need a translation step.

Boost post as ad

Creates a paid ad from an existing published post, keeping the post's engagement. By default it provisions the whole hierarchy (campaign, ad set, ad). **Attach shape (Meta).** Send `adSetId` to put the ad under an EXISTING ad set instead, so that ad set keeps its learning phase. It then owns `budget`, `schedule` and `targeting`, and sending any of those alongside `adSetId` is a 400 rather than a silent drop. `budget` is required only without `adSetId`. `instagramAccountId`, `destinationType` and `adSetId` are Meta-only and return 400 on other platforms. **Retries.** Boosts are NOT idempotent and can take minutes when Meta requires re-hosting an Instagram video, so do not retry on client timeout. Send an Idempotency-Key header to make retries safe: same key and body replays the original 201, and distinct keys always create distinct ads. Without the header, an identical request is treated as a retry: while one is in flight it returns 409, and within 10 minutes of a completed boost it returns the already-created ad instead of creating another. To intentionally duplicate an ad, send distinct Idempotency-Keys (or vary the body, e.g. the name).

accountId*string
adAccountId*string
name*string
Lengthlength <= 255
campaignName?string

Meta only. Exact campaign name. Overrides the default <name> - Campaign.

Lengthlength <= 255
adSetName?string

Meta only. Exact ad set name. Overrides the default <name> - Ad Set. (For per-ad names on the multi-creative shape, set name on each creatives[] entry.)

Lengthlength <= 255
adName?string

Meta only. Exact ad name (the single-creative ad object's name). Overrides the default, which is name. (For per-ad names on the multi-creative shape, set name on each creatives[] entry instead.)

Lengthlength <= 255
tracking?

Meta only. Attaches pixel measurement to the ad regardless of the optimization goal (the "Website events" tracking row in Ads Manager). pixelId becomes the ad's tracking_specs (offsite_conversion + fb_pixel); urlTags becomes the ad's url_tags (click-tracking query params). Applied on the legacy single-creative shape, every ad of the multi-creative shape, and the attach shape. NOTE: tracking lives on the AD object and is not inherited from the ad set, so pass it on EVERY attach call that should carry the pixel.

goal?string

Required on legacy and multi-creative shapes; the attach shape inherits it from the ad set. Available goals vary by platform.

Meta

  • conversions: OUTCOME_SALES. Requires promotedObject.pixelId and promotedObject.customEventType with a commerce event such as PURCHASE or START_TRIAL, or promotedObject.customConversionId to optimise against a Custom Conversion, or customEventType: OTHER + customEventStr to optimise against a pixel custom event.
  • lead_conversion: OUTCOME_LEADS optimizing website pixel leads. Same pixel and event fields, but with a leads-class event such as LEAD, SUBMIT_APPLICATION, SCHEDULE or CONTACT (or promotedObject.customConversionId to optimise against a Custom Conversion instead). Meta gates conversion events by objective, so leads-class events are rejected under conversions.
  • lead_generation: OUTCOME_LEADS with instant forms. Requires leadGenFormId. promotedObject.pageId is optional and auto-filled from the connected Page.
  • app_promotion: requires promotedObject.applicationId and promotedObject.objectStoreUrl.
  • catalog_sales: Advantage+ catalog ads, for example vehicle inventory. Requires promotedObject.productSetId, promotedObject.pixelId and promotedObject.customEventType. Builds a catalog TEMPLATE creative from the copy fields, which may carry template tags like {{product.name}} or {{vehicle.make}}. No imageUrl or video is sent; Meta renders the visuals per catalog item. Discover catalogs via GET /v1/ads/catalogs and product sets via GET /v1/ads/catalogs/{catalogId}/product-sets. Single shape only, no creatives[], adSetId, dynamicCreative or placementAssets.
  • page_likes: Page Likes conversion location under OUTCOME_ENGAGEMENT (destination_type ON_PAGE, optimization PAGE_LIKES). promotedObject.pageId is optional and auto-filled from the connected Page. The creative CTA is fixed to LIKE_PAGE targeting that Page; headline / body / linkUrl / callToAction / imageUrl / video are all optional (Meta derives the link and the Like button from the Page).

TikTok

  • conversions: website-conversion ad group. Requires promotedObject.pixelId, your TikTok Pixel ID. Accepts an optional promotedObject.customEventType with a TikTok optimization_event code your pixel tracks (newer pixels use e.g. SHOPPING for purchase events; legacy pixels use ON_WEB_ORDER, INITIATE_ORDER, ON_WEB_REGISTER or FORM). To inherit pixel and event from an existing ad group, pass adSetId instead.

LinkedIn

  • engagement, traffic, awareness and video_views create standalone Direct Sponsored Content ads. traffic requires linkUrl; video_views requires video.
  • lead_generation: requires leadGenFormId (an adForm ID from POST /v1/ads/lead-forms). The campaign objective is set to MAX_LEAD and the creative's leadgenCallToAction destination is set to urn:li:adForm:{id}.
  • job_applicants requires a platformSpecificData.jobs creative.
  • For conversions on LinkedIn, or to promote an existing post, use POST /v1/ads/boost.

OpenAI Ads

  • Only traffic, awareness, and conversions are supported (other goals return 400). Maps to OpenAI's bidding_type (clicks, impressions, conversions respectively). conversions requires an active conversion event setting on the account; create a tracking tag with defaultEventType via the tracking-tags API (POST /v1/accounts/{accountId}/tracking-tags), or configure a conversion event in OpenAI Ads Manager, or the request returns 422.

Value in

  • "engagement"
  • "traffic"
  • "awareness"
  • "video_views"
  • "lead_generation"
  • "lead_conversion"
  • "conversions"
  • "app_promotion"
  • "catalog_sales"
  • "page_likes"
  • "job_applicants"
optimizationGoal?string

Meta only. Explicit ad-set optimization_goal (e.g. LANDING_PAGE_VIEWS, LINK_CLICKS, REACH, IMPRESSIONS, OFFSITE_CONVERSIONS, THRUPLAY, LEAD_GENERATION). Overrides the default derived from goal (e.g. traffic defaults to LINK_CLICKS). Forwarded verbatim to Meta, which validates compatibility with the campaign objective and rejects incompatible combinations.

billingEvent?string

Meta only. Explicit ad-set billing_event. Defaults to IMPRESSIONS. Forwarded verbatim to Meta, which validates compatibility with the optimization goal.

buyingType?string

Meta only. RESERVED = Reach & Frequency: requires rfPredictionId (a RESERVED prediction from /v1/ads/rf-predictions + /reserve). Budget, schedule and pricing come from the reservation, so budgetAmount/budgetType are not required and bid fields are ignored. Only the plain single-ad shape (no creatives[], adSetId, existingCampaignId or dynamicCreative).

Value in

  • "AUCTION"
  • "RESERVED"
rfPredictionId?string

Meta only. The RESERVED prediction id the R&F ad set runs on (reserving mints a new id — pass that one). Requires buyingType RESERVED.

creativeFeatures?

Meta only. Advantage+ creative enhancements: a partial map of Meta creative feature keys (snake_case, e.g. enhance_cta, image_brightness_and_contrast, text_optimizations) to enroll status, forwarded as degrees_of_freedom_spec.creative_features_spec. Meta validates the keys; unspecified features default to OPT_OUT. The legacy standard_enhancements bundle is deprecated by Meta and rejected.

multiAdvertiser?string

Meta only. Multi-advertiser ads: whether Meta may show this ad alongside other advertisers' in one unit. Meta auto-enrols since Aug 2024, so send OPT_OUT to leave. It is a top-level creative field, NOT a creativeFeatures key — Meta rejects it there.

Value in

  • "OPT_IN"
  • "OPT_OUT"
validateOnly?boolean

Meta only, single standalone shape only (no creatives[], adSetId, or RESERVED). Dry-run: each node runs Meta's execution_options validate_only and NOTHING is created or persisted. Children need real parents, so a fresh tree validates the campaign + creative (the ad set needs its campaign to exist — pass existingCampaignId to validate it too; the ad itself is never validatable pre-create). A Meta validation failure returns the 400 verbatim; success returns 200 with per-node results instead of an ad.

budgetAmount?number

Budget in WHOLE currency units (USD: 50 = $50.00), NOT cents — Meta's own Marketing API takes this same number in minor units, so it is an easy and expensive mix-up. Required on legacy + multi-creative shapes. Inherited on attach. OpenAI Ads requires a $1 minimum (its budget is lifetime-only, see budgetType).

budgetType?string

Required on legacy + multi-creative shapes. Inherited on attach. OpenAI Ads accepts lifetime only (no daily-budget concept on the platform); sending daily returns 422. OpenAI Ads lifetime budgets require endDate to give the lifetime cap a spend window.

Value in

  • "daily"
  • "lifetime"
status?string

Meta, TikTok, and LinkedIn. Publish state of the created entities. Omitted or ACTIVE publishes live (default, back-compat); PAUSED creates them paused so you can review before they spend. On Meta the pause is held on the campaign this call creates, leaving the ad set and ad switched on, so a single PUT /v1/ads/campaigns/{campaignId}/status with active brings the whole thing live. It is held at every level instead when the pause cannot rely on the campaign: existingCampaignId (that campaign may be running and is never touched) or campaignStatus: ACTIVE. On TikTok the whole campaign > ad group > ad hierarchy stays paused. On LinkedIn the whole campaign group, campaign, and creative hierarchy stays PAUSED (intendedStatus PAUSED on each).

Value in

  • "ACTIVE"
  • "PAUSED"
campaignStatus?string

Meta only. Overrides status for the campaign level alone, so you can create a live campaign whose ad set and ad stay paused, or the reverse. Omitted, it follows status.

Value in

  • "ACTIVE"
  • "PAUSED"
budgetLevel?string

Meta only. Where the budget lives, which selects the Meta budget model:

  • adset (default): ABO (Ad-set Budget Optimization). The budget is set on the ad set. This is the back-compatible behaviour — omit this field to keep it.
  • campaign: CBO (Campaign Budget Optimization / Advantage Campaign Budget). The budget AND bidStrategy are set on the CAMPAIGN, and Meta distributes spend across ad sets automatically. Meta requires the budget at exactly one level, never both. Non-Meta platforms ignore this field. Ignored on the attach shape (adSetId), which inherits the existing budget.
Default"adset"

Value in

  • "adset"
  • "campaign"
currency?string

ISO 4217 currency code matching the ad account's currency (e.g. USD). Meta only. Optional: Zernio resolves it from the ad account when omitted. The value selects the minor-unit exponent Zernio converts budget/bid amounts by before calling Meta (most currencies are cents; zero-decimal currencies like JPY/KRW are sent as-is).

Length3 <= length <= 3
headline?string

Required for Meta, Google, Pinterest, LinkedIn, and OpenAI Ads on legacy + attach shapes (skip for multi-creative — use creatives[].headline). Ignored for TikTok and X/Twitter. Max: Meta=255, Google=30, Pinterest=100, LinkedIn=400, OpenAI=50 (min 3). On LinkedIn this is the ad's headline (the bold text on the creative); for traffic ads it's the link card title. On OpenAI Ads this is the chat card's title.

longHeadline?string

Google Display only — defaults to headline if omitted. On LinkedIn, reused as the optional secondary description text on traffic (link) ads; omitted if not provided.

Lengthlength <= 90
body?string

Required on legacy + attach shapes. For X/Twitter this is the tweet text (max 280 chars including a ~24-char URL when linkUrl is set). On LinkedIn this is the post commentary (the intro text shown above the ad). On OpenAI Ads this is the chat card's body text. Max: Google=90, Pinterest=500, OpenAI=100.

description?string

Meta only (facebook/instagram). Link description — the secondary text shown below the headline (Meta's link_data.description; on video creatives mapped to video_data.link_description). When omitted, Meta auto-pulls the destination URL's OpenGraph description. Applies on legacy, attach, and placementAssets shapes; for multi-creative use creatives[].description (this field is the shared fallback). For multi-text variations use descriptions (array) instead.

Lengthlength <= 255
bodies?array<string>

Meta only. Multiple Text Options (Advantage+ Flexible Format): supply 1-5 primary-text variations and Meta optimises delivery across them, WITHOUT enabling full Dynamic Creative (dynamicCreative). Uses optimization_type: DEGREES_OF_FREEDOM on the asset feed, so multiple ads per ad set are allowed (unlike dynamicCreative which is limited to one). Requires imageUrl or video, linkUrl, and callToAction. When set, the top-level body field is used as the object_story_spec.link_data.message (the preview text) and headlines must also be present. On a video creative the copy lands in video_data.message / video_data.title instead of link_data. Mutually exclusive with dynamicCreative, placementAssets, carouselCards, and creatives[].

Items1 <= items <= 5
headlines?array<>

Meta only. Headline variations for Multiple Text Options. Must be sent alongside bodies. The top-level headline field is used as the object_story_spec.link_data.name (video_data.title on a video creative).

Items1 <= items <= 5
descriptions?array<>

Meta only. Optional description variations for Multiple Text Options. Sent alongside bodies and headlines.

Items1 <= items <= 5
callToAction?string

Required on legacy + attach shapes for Meta. Honoured on TikTok (passes through to the Spark Ad creative's call_to_action) and on LinkedIn (the CTA button on the ad; defaults to LEARN_MORE when linkUrl is set). LinkedIn accepts: LEARN_MORE, SIGN_UP, DOWNLOAD, SUBSCRIBE, REGISTER, JOIN, ATTEND, REQUEST_DEMO, VIEW_QUOTE, APPLY, SEE_MORE, SHOP_NOW, BUY_NOW. Ignored by Google, Pinterest, and X/Twitter.

Value in

  • "LEARN_MORE"
  • "SHOP_NOW"
  • "SIGN_UP"
  • "BOOK_TRAVEL"
  • "CONTACT_US"
  • "DOWNLOAD"
  • "GET_OFFER"
  • "GET_QUOTE"
  • "SUBSCRIBE"
  • "WATCH_MORE"
  • "ADD_TO_CART"
  • "APPLY_NOW"
  • "BOOK_NOW"
  • "BUY_TICKETS"
  • "DONATE"
  • "DONATE_NOW"
  • "GET_DIRECTIONS"
  • "GET_SHOWTIMES"
  • "LISTEN_NOW"
  • "ORDER_NOW"
  • "PLAY_GAME"
  • "REQUEST_TIME"
  • "SEE_MENU"
  • "START_ORDER"
  • "INSTALL_MOBILE_APP"
  • "USE_APP"
  • "REGISTER"
  • "JOIN"
  • "ATTEND"
  • "REQUEST_DEMO"
  • "VIEW_QUOTE"
  • "APPLY"
  • "SEE_MORE"
  • "BUY_NOW"
linkUrl?string

Required on legacy + attach shapes (skip for multi-creative). On LinkedIn it's the ad's destination URL; required for traffic ads, optional for engagement / awareness. NOT required when goal is lead_generation (the ad opens a Lead Gen form instead of a destination). On LinkedIn, imageUrl + linkUrl publishes an ARTICLE-content creative; this is LinkedIn's article ad format, with the image as thumbnail and longHeadline as description. Required for OpenAI Ads (the chat card's target_url).

Formaturi
leadGenFormId?string

Lead Gen form ID to attach to the ad's creative. REQUIRED when goal is lead_generation. Create one via POST /v1/ads/lead-forms. On Meta (facebook/instagram) this is the leadgen_forms ID; the ad set's promoted_object.page_id + LEAD_GENERATION optimization + destination_type ON_AD are derived automatically from the goal. On LinkedIn this is the adForm ID; the creative's leadgenCallToAction.destination is set to urn:li:adForm:{id} and the campaign objective is set to MAX_LEAD. Forms must be owned by the sponsoredAccount (not the organization) for the URN to resolve. Also required on every Meta ATTACH (adSetId) call that targets a lead ad set (the form attaches per-ad; Meta rejects a formless ad in a lead ad set). Both placementAssets (per-placement creative) and dynamicCreative (multi-text / multi-asset pool, e.g. multiple headlines and primary texts) ARE supported on Meta instant-form lead ads.

imageUrl?string

Image creative for Meta/Google/Pinterest/LinkedIn on legacy + attach shapes (mutually exclusive with video). Required for LinkedIn ads unless video is set. Not required for Google Search campaigns. For TikTok, this field carries the VIDEO URL (the TikTok ads endpoint is video-only; the field retains the imageUrl name for cross-platform consistency). Ignored for X/Twitter. For Google Display, treated as the landscape image (alias of images.landscape); supply images.square alongside or the request is rejected. For LinkedIn the image is uploaded to LinkedIn under the authoring Company Page (see organizationId); recommended ratio 1.91:1 (e.g. 1200×627). Required for OpenAI Ads (uploaded as the chat card's image; OpenAI has no video ad format).

Formaturi
images?

Google Display (Responsive Display Ads) only. Google RDA requires both a landscape (1.91:1) and a square (1:1) marketing image; sending only one is rejected upstream as 'Too few.' (NOT_ENOUGH_*_MARKETING_IMAGE_ASSET). Supply both URLs here. Either this field or the legacy imageUrl can provide the landscape, but square has no legacy counterpart so it must be set here for Display.

video?

Meta (facebook, instagram) and LinkedIn. Creates a single VIDEO ad. Mutually exclusive with imageUrl. Supply url to upload a file, or id to reuse a video already on the ad account (list them with GET /v1/ads/videos). Works on the single-ad and attach (adSetId) shapes; for Meta multi-creative, set video per entry inside creatives[] instead. For LinkedIn the video is uploaded to LinkedIn under the authoring Company Page (see organizationId) and the campaign format is set to SINGLE_VIDEO; LinkedIn ignores thumbnailUrl (it auto-generates the poster frame) — supply MP4 H.264/AAC, 3s-30min, 75KB-500MB.

creatives?array<>

Meta-only. When present, switches to the multi-creative shape: creates 1 campaign + 1 ad set + N ads (one per entry here). Top-level headline / body / imageUrl / linkUrl / callToAction are ignored in this mode. Mutually exclusive with adSetId.

Items1 <= items
adSetId?string

When present, switches to the attach shape: adds one new ad to this existing ad set without creating a new campaign. Budget, targeting, goal, schedule, AND bid strategy are inherited from the ad set on Meta — passing bidStrategy in attach mode returns 400. To change an existing ad set's bid, use PUT /v1/ads/ad-sets/{adSetId}. Mutually exclusive with creatives[].

The attached ad takes the full single-creative surface: headline/body/description/callToAction plus either imageUrl/video OR placementAssets (its own per-placement Feed/Story assets) OR translations/defaultLocale (its own per-locale asset feed, Meta only), and leadGenFormId when the target is a lead ad set (the parent must be ON_AD, true for ad sets created via goal lead_generation; Meta rejects a formless ad there, so pass the form on EVERY attached ad). This is the way to build N full ads sharing one ad set: create the first ad via the normal shape, then attach the rest one call each.

Supported on Meta (facebook, instagram), TikTok, and LinkedIn. On TikTok the adSetId is the ad group ID; the new ad inherits the ad group's bid + budget + targeting. On LinkedIn the adSetId is the LinkedIn Campaign ID (numeric); we attach a new Creative to that Campaign, so the Campaign's platformSpecificData bidding, targeting, budget and schedule are inherited (passing those fields returns 400).

existingCampaignId?string

Meta + LinkedIn. On Meta: add the new ad set under this EXISTING campaign instead of creating a new one (multi-ad-set audience testing). The new ad set's budget is matched to the campaign's mode automatically: for a CBO campaign (campaign-level budget) omit budgetAmount/budgetType — the campaign owns the budget; for an ABO campaign pass them (they go on the new ad set). On LinkedIn: create a new Campaign (and its Creative) under this EXISTING CampaignGroup. On failure only the entities we authored are cleaned up; the pre-existing parent is left untouched and is never (re)activated. Mutually exclusive with adSetId and creatives[].

existingCreativeId?string

Meta only. Reuse an EXISTING ad creative by id instead of building a new one from the copy/media fields (which are then ignored). Combine with existingCampaignId to build a multi-ad-set campaign that shares one creative. Mutually exclusive with creatives[], dynamicCreative, and placementAssets. The creative id used is returned as creativeId on the create response.

businessName?string

Google Display only

Lengthlength <= 25
boardId?string

Pinterest only. Board ID (auto-creates if not provided).

organizationId?string

LinkedIn only. The Company Page that authors the Direct Sponsored Content ("dark") post backing the ad — accepts a numeric organization ID or a full urn:li:organization:N URN. Required unless the resolved accountId is a connected LinkedIn Company-Page account (defaults to that page) or the LinkedIn ad account is org-owned (defaults to the account's owning organization). The authenticated member must be an ADMINISTRATOR or DIRECT_SPONSORED_CONTENT_POSTER of this page (and the page must be associated with the ad account), or LinkedIn returns 403. Ignored by every other platform.

targeting?

Nested targeting object — the same TargetingSpec shape as POST /v1/ads/boost, POST /v1/ads/targeting/reach-estimate, and saved_targeting audiences. Merged UNDER the flat inline targeting fields below: savedTargetingId < targeting < flat fields (a flat field present on the body replaces the nested value entirely). Both forms are equivalent; use whichever your integration already builds.

countries?array<string>

ISO 3166-1 alpha-2 country codes (e.g. ['NL']). Defaults to ['US'] when no other geo targeting (flat or nested targeting) is provided. (LinkedIn and OpenAI Ads currently honour country-level targeting only; any other targeting field returns 400 for OpenAI Ads.)

cities?array<>

City-level geo targeting (Meta and TikTok). Each city is targeted by the platform's opaque key (the city ID) which can be looked up via GET /v1/ads/targeting/search?dimension=geo&q=<name>&countryCode=<ISO>. Optional radius + distance_unit (Meta only) extend the targeting beyond the city limits (e.g. radius 25 km around the city center). Both must be set together, or both omitted (Meta defaults to ~16 km when omitted).

On Meta, cannot overlap with the same country in countries (Meta returns a "locations overlap" error). Either drop the country or scope it to a different country. On TikTok, keys are numeric location ids and can be sent without countries.

regions?array<>

Region-level (state/province) geo targeting (Meta and TikTok). Each region is targeted by the platform's opaque key (the region ID) which can be looked up via GET /v1/ads/targeting/search?dimension=geo&q=<name>&countryCode=<ISO>.

ageMin?integer
Range13 <= value <= 65
ageMax?integer
Range13 <= value <= 65
interests?array<>

Interest objects from /v1/ads/interests. Each must include id and name.

zips?array<>

Postal/ZIP geo targeting. key is the platform's postal location ID from /v1/ads/targeting/search?dimension=geo&geoType=zip. Supported on Meta, Google, TikTok, Pinterest, X.

metros?array<>

DMA / metro-area geo targeting (Meta and TikTok). key is the platform's metro ID from /v1/ads/targeting/search?dimension=geo&geoType=metro (TikTok metros appear as type metro, e.g. the New York DMA).

customLocations?array<>

Point-radius (lat/lng) geo targeting. Meta only (custom_locations). Rejected on platforms without radius support.

behaviors?array<>

Behaviour entities from /v1/ads/targeting/search?dimension=behavior. Supported on Meta and TikTok. Each must include id.

workPositions?array<>

Meta only. Job title entities from /v1/ads/targeting/search?dimension=workPosition. Each must include id. Rejected on other platforms (use LinkedIn's jobTitles there).

workEmployers?array<>

Meta only. Employer entities from /v1/ads/targeting/search?dimension=workEmployer. Each must include id.

workIndustries?array<>

Meta only. Work-industry entities from /v1/ads/targeting/search?dimension=workIndustry. Each must include id. Rejected on other platforms (use LinkedIn's industries there).

incomeTier?string

Normalized household-income tier. Meta and TikTok express all four; Google maps only top_10; rejected on LinkedIn, X, and Pinterest. On Meta, income targeting is incompatible with housing/employment/credit specialAdCategories.

Value in

  • "top_5"
  • "top_10"
  • "top_10_25"
  • "top_25_50"
languages?array<string>

e.g. ["en","es"]. Google: campaign language targeting (language_constant) using Google's language codes (ISO 639-1, plus variants such as zh_CN); unknown codes return 400. On Meta, a bare code targets all regional variants ("en" = all English), or use a region-qualified code for a specific one ("en_GB", "pt_BR", "zh_TW"); unknown codes are rejected. Other ad platforms use their own language-code systems.

placements?

Meta only. Manual ad placements. Omit for automatic placements (Meta's default, recommended for most cases — Meta optimises delivery across all eligible surfaces). When set, restricts delivery to the chosen surfaces, mapped onto the ad set's targeting.{publisher_platforms, facebook_positions, instagram_positions, messenger_positions, audience_network_positions, threads_positions, whatsapp_positions, device_platforms}. Enum membership is validated here; Meta additionally enforces co-selection rules (e.g. some positions require their parent publisher platform) and returns an actionable error which we surface. Non-Meta platforms reject this field.

savedTargetingId?string

ID of a saved_targeting audience (created via POST /v1/ads/audiences). When set, its stored TargetingSpec is expanded as the base targeting; inline fields on this body merge on top. Lets you reuse a named targeting preset without re-sending every field.

rawTargeting?

Meta only. A raw Meta-native targeting spec (snake_case: geo_locations, age_min, excluded_custom_audiences, flexible_spec, targeting_automation, user_os, wireless_carrier, business places, etc.) — exactly the shape GET /v1/ads/{adId} returns for external ads. Sent alone it reaches the ad set VERBATIM (the clone-a-campaign's-targeting-exactly path). Meta validates and surfaces any errors.

Can be combined with the camelCase targeting fields (countries/regions/cities/interests/ageMin/..., targeting, savedTargetingId, audienceId): rawTargeting is the BASE layer and the built camelCase spec is merged on top, key by key, with the camelCase side winning on collision (the camelCase precedence chain stays savedTargetingId < targeting < flat fields). The merge goes one level deep inside geo_locations and excluded_geo_locations: built sub-keys win, raw-only sub-keys such as location_types survive alongside built countries. Array values (flexible_spec, ...) are replaced as a WHOLE key when the camelCase spec builds them, never element-merged. When rawTargeting is present the defaults the camelCase builder normally injects (US geo, targeting_automation.advantage_audience: 0) are suppressed, so raw's values are not clobbered — include targeting_automation in the raw spec (or send advantageAudience) as Meta requires it on create. If cloning an EU campaign, also pass dsaBeneficiary / dsaPayor (those are separate fields, not part of targeting).

specialAdCategories?array<>

Meta only. Declares the ad's special category, required for housing, employment, credit, or political/social-issue ads (Meta enforces restricted targeting for these). Note: setting a special category disables income/zip targeting on Meta.

specialAdCategoryCountry?array<string>

Meta (metaads) only. 2-letter ISO country codes the special ad category applies to. Requires specialAdCategories to be set (400 otherwise). Ignored when joining an existing campaign via existingCampaignId (the existing campaign's category/country already governs it).

regionalRegulatedCategories?array<string>

Meta only. Regional regulation categories required when the ad set targets certain countries. Known values: BRAZIL_REGULATION, SINGAPORE_UNIVERSAL, TAIWAN_UNIVERSAL, THAILAND_UNIVERSAL, AUSTRALIA_FINSERV, INDIA_FINSERV, TAIWAN_FINSERV. Meta rejects the ad set without this when the targeting geo includes the corresponding country.

regionalRegulationIdentities?

Meta only. Beneficiary/payer entity IDs for regionalRegulatedCategories. Values are numeric IDs from Meta verification. Keys vary by category (e.g. universal_beneficiary / universal_payer for BRAZIL_REGULATION and THAILAND_UNIVERSAL). If omitted, Meta uses Ads Manager defaults when configured.

endDate?string

Required for lifetime budgets

Formatdate-time
startDate?string

Meta only. Ad-set start time (ISO 8601, e.g. "2026-06-10T09:00:00Z"), mapped to the ad set's start_time. When omitted the ad starts delivering immediately. For lifetime budgets Meta also requires endDate. (Same schedule.startDate semantics already available on POST /v1/ads/boost.)

Formatdate-time
instagramAccountId?string

Meta only. Override the Instagram account the ad is delivered as — pass an Instagram Business Account ID (e.g. 17841...), mapped to the creative's instagram_user_id. When omitted we use the Instagram actor Meta already runs the Page's other ads as, falling back to the Page's page-backed Instagram account. Useful when a Page has more than one eligible IG account.

dynamicCreative?

Meta only. Dynamic Creative: supply a POOL of assets and Meta auto-combines and optimises them into the best-performing variations within a single ad (mapped to the creative's asset_feed_spec). When set, the top-level single-creative fields (imageUrl, headline, body, linkUrl, callToAction) are ignored. Mutually exclusive with the creatives[] multi-creative shape. Exactly ONE of imageUrls / videoUrls is required (Meta allows one ad format per asset feed; sending both → 400). Meta limits: ≤10 images or ≤10 videos, ≤5 bodies / titles / descriptions.

carouselCards?array<>

Meta only. Hand-built carousel: 2-10 authored cards in DETERMINISTIC order, mapped to the creative's link_data.child_attachments. Unlike dynamicCreative, you control the card order and per-card copy/link. Requires top-level body, linkUrl and callToAction. Those become the ad's own Destination and button (link_data.link / link_data.call_to_action), and double as the per-card fallback when a card omits its own. Mutually exclusive with imageUrl/video, creatives[], dynamicCreative, placementAssets, existingCreativeId, adSetId, leadGenFormId and goal catalog_sales.

Items2 <= items <= 10
defaultLocale?string

Meta only. Language the top-level copy is written in (e.g. en, pt_BR), used by the translations default rule. Defaults to en. Meta rejects a language asset feed whose default rule carries no locales of its own. Must NOT also appear as an entry in translations.

translations?array<>

Meta only. Multi-language ads (Dynamic Language Optimization): ONE ad carrying per-locale copy and, optionally, per-locale media — the "Languages" toggle in Ads Manager. Keeps social proof (likes/comments/shares) on a SINGLE post instead of splitting it across one ad per language.

The ad's top-level copy is the DEFAULT shown to every locale you do NOT list, and it counts as one of the language variants.

IMPORTANT, and the opposite of what you might expect: text does NOT inherit. Every entry must carry its own headline, body AND description, and all of them must be DISTINCT from each other and from the ad's top-level copy. Meta deduplicates identical strings inside the asset feed, so two locales sharing a string collapse into one asset and the create fails with a misleading "Too few ... texts provided in asset creation" (subcode 1885817) that names a field which is actually present. We validate this before calling Meta and return a 400 naming the offending locale and field. description is therefore effectively required on the ad whenever translations is present, even though it is optional otherwise.

Do NOT list defaultLocale inside translations: Meta rejects the duplicate with "The language asset feed includes an unsupported targeting field" (subcode 1885985).

Media DOES inherit and is uploaded once when shared, and linkUrl inherits too: each locale may name its own landing page and unlisted locales fall back to the ad's top-level linkUrl. Note that Meta enforces Dynamic Creative image dimensions on language feeds, so an imageUrl that works on a normal ad may be rejected with "The following images have invalid dimensions for Dynamic Creative" (subcode 1885558). Video is not affected.

Mutually exclusive with dynamicCreative, placementAssets, carouselCards, existingCreativeId and creatives[]. Meta allows one asset_feed_spec shape per creative.

Items1 <= items <= 10
placementAssets?

Meta only. Placement asset customization: pin a SPECIFIC asset (image OR video) to each placement group on a SINGLE ad (e.g. a 9:16 on Stories/Reels and a 4:5 on Feed). The same thing Meta Ads Manager produces with "different creative per placement", mapped to the creative's asset_feed_spec + asset_customization_rules. Deterministic pinning, NOT the auto-optimizing pool of dynamicCreative (mutually exclusive). Works on the legacy single shape AND the attach shape (adSetId + placementAssets adds one placement-customized ad to an existing ad set — the way to build N per-placement ads sharing one ad set: create the first normally, attach the rest). Cannot be combined with creatives[]. Shared copy (headline, body, link, CTA) comes from the top-level single-creative fields since only the asset varies by placement. Each rule's placements accepts the same fields as the top-level placements object; Meta enforces co-selection rules and returns an actionable error.

Note on text rendering: Meta suppresses primary text and headline on fullscreen placements (Stories and Reels) in actual ad delivery; the fields are accepted and the ad publishes, but the copy is not shown to users. For visible copy on those placements, bake the text into the creative image or video itself.

A block is all-image OR all-video, never mixed (Meta's asset_feed_spec carries one ad format). Image mode: defaultImageUrl + rules[].imageUrl. Video mode: defaultVideoUrl + rules[].videoUrl (optional thumbnailUrl/defaultThumbnailUrl posters; Meta auto-generates when omitted). Exactly one catch-all default is required.

audienceId?string

Custom audience ID for targeting

campaignType?string

Google only

Default"display"

Value in

  • "display"
  • "search"
keywords?array<|>

Google Search only. Keywords on the new ad group; entries are strings (BROAD) or { text, matchType }. Editable later via PUT /v1/ads/{adId} targeting.keywords.

Itemsitems <= 1000
negativeKeywords?array<|>

Google Search only; other platforms return 400. Ad-group-level negative keywords on the new ad group. Editable later via PUT /v1/ads/{adId} targeting.negativeKeywords.

Itemsitems <= 1000
campaignNegativeKeywords?array<|>

Google Search only; other platforms return 400. Campaign-level negative keywords (campaign_criterion.negative), created alongside the ad group. Editable later via PUT /v1/ads/campaigns/{campaignId}/negative-keywords.

Itemsitems <= 1000
additionalHeadlines?array<string>

Google Search RSA only. Extra headlines.

additionalDescriptions?array<string>

Google Search RSA only. Extra descriptions.

sitelinks?array<>

Google Search only. Sitelink assets to create and attach at the campaign level. Each entry becomes an Asset (with sitelink_asset + Asset.final_urls) plus a CampaignAsset link (field_type SITELINK). Approval is async — Google reviews assets after creation; poll asset.policy_summary later to read the verdict. Google requires at least two sitelinks to surface them on an ad; four or more is Google's own recommendation for maximum visibility. The response's creative.sitelinks[] echoes each input plus its Google resourceName.

Items2 <= items <= 20
callouts?array<>

Google Search only. Short callout texts (max 25 chars each) that appear as non-clickable annotations under the ad, e.g. "Free shipping", "24/7 support". Each becomes one Asset (callout_asset) plus a CampaignAsset link with field_type CALLOUT. Response's creative.callouts[] echoes each input plus its Google resourceName.

Items1 <= items <= 20
structuredSnippets?array<>

Google Search only. Structured snippets — one header from Google's predefined list plus 3-10 values (max 25 chars each). Each becomes one Asset (structured_snippet_asset) plus a CampaignAsset link with field_type STRUCTURED_SNIPPET.

Items1 <= items <= 20
advantageAudience?integer

Meta only. Controls the Advantage audience feature (targeting_automation). 0 = disabled (default), 1 = enabled. Meta Marketing API requires this field on all ad set creation requests.

Value in

  • 0
  • 1
attributionSpec?array<>

Meta only. Conversion attribution window for the ad set — maps 1:1 to Meta's ad-set attribution_spec. Only honored for conversion goals (conversions, lead_generation, app_promotion); ignored for awareness/traffic/engagement. Omit to use Meta's default (7-day click + 1-day view). Meta enforces the valid combinations: VIEW_THROUGH only allows windowDays: 1 (7d/28d view windows were removed Jan 2026); ENGAGED_VIDEO_VIEW only 1 and only alongside VIEW_THROUGH: 1; CLICK_THROUGH: 28 only on certain objectives. Invalid combos surface as a Meta 400. Example: [{ "eventType": "CLICK_THROUGH", "windowDays": 7 }, { "eventType": "VIEW_THROUGH", "windowDays": 1 }]

Items1 <= items <= 3
gender?string

Restrict the audience by gender. 'male' targets men only, 'female' targets women only, 'all' (default) targets everyone. Applied on Meta, TikTok and Pinterest. Ignored on Google, LinkedIn and X.

Default"all"

Value in

  • "all"
  • "male"
  • "female"
bidStrategy?string
Deprecated

Deprecated: send it inside platformSpecificData instead (Meta today; TikTok's nested shape is planned). The flat field keeps working during the deprecation window; sending both shapes returns a 400.

Meta bid strategy applied to the ad set.

OpenAI Ads: required on every ad group via this flat field, the only channel it supports (platformSpecificData is Meta/LinkedIn-only and returns 400 for OpenAI). No auto-bid option exists; send LOWEST_COST_WITH_BID_CAP or COST_CAP together with bidAmount, omitting it returns 400.

Google (not deprecated there, this shared flat field is Google's only shape): applied to the campaign this call creates. On Google: LOWEST_COST_WITHOUT_CAP = Maximize Conversions, COST_CAP + bidAmount = Target CPA, LOWEST_COST_WITH_MIN_ROAS + roasAverageFloor = Target ROAS, LOWEST_COST_WITH_BID_CAP + bidAmount = Maximize Clicks with a CPC ceiling; portfolioBidStrategyId attaches a portfolio strategy instead. Omitted, the campaign falls back to a goal-based default.

Value in

  • "LOWEST_COST_WITHOUT_CAP"
  • "LOWEST_COST_WITH_BID_CAP"
  • "COST_CAP"
  • "LOWEST_COST_WITH_MIN_ROAS"
bidAmount?number
Deprecated

Deprecated: send it inside platformSpecificData instead (Meta today; TikTok's nested shape is planned). The flat field keeps working during the deprecation window; sending both shapes returns a 400.

Bid cap in WHOLE currency units (USD: 5 = $5.00; JPY: 100 = ¥100). Required when bidStrategy is LOWEST_COST_WITH_BID_CAP or COST_CAP. Meta only: sending bidAmount WITHOUT bidStrategy requires existingCampaignId (400 otherwise), and sets the new ad set's cap under the joined campaign's COST_CAP / LOWEST_COST_WITH_BID_CAP parent. The strategy itself is inherited from the campaign. Restating bidStrategy here is accepted but has no effect on the ad set.

Rejected with 400 in adSetId attach mode: that shape inherits its cap from the platform. Use PUT /v1/ads/ad-sets/{adSetId} there instead.

roasAverageFloor?number
Deprecated

Deprecated: send it inside platformSpecificData instead (Meta today; TikTok's nested shape is planned). The flat field keeps working during the deprecation window; sending both shapes returns a 400.

Minimum ROAS as a decimal multiplier (e.g. 2.0 = 2.0x ROAS). Required when bidStrategy is LOWEST_COST_WITH_MIN_ROAS. Sending it without bidStrategy is a 400. Sent to Meta as bid_constraints.roas_average_floor × 10000. Known gap: a CBO campaign's ROAS floor lives on the campaign only (set via POST /v1/ads/campaigns); there is no supported way to set it while joining a CBO campaign here.

portfolioBidStrategyId?string

Google only. Attach an existing portfolio bid strategy (numeric id from GET /v1/ads/bid-strategies) to the new campaign instead of a standard one. Exclusive with bidStrategy.

Match^\d+$
valueRuleSetId?string

Meta only (facebook, instagram; other platforms return 400). Value rule set to attach to the new ad set, from /v1/ads/value-rule-sets. Attachment is driven by this id, so valueRulesApplied is optional alongside it.

Rejected with 400 in adSetId attach mode: that shape inherits the existing ad set's attachment, so the field would be silently ignored. Use PUT /v1/ads/ad-sets/{adSetId} there instead.

Ignored (stripped before the ad-set create) when buyingType is RESERVED: value rules only apply to auction ad sets on LOWEST_COST_WITHOUT_CAP or COST_CAP, and a Reach & Frequency reservation has no auction bid strategy.

Read back with GET /v1/ads/ad-sets/{adSetId}?fields=value_rule_set_id; the attachment is not mirrored onto Zernio's ad documents.

Match^\d+$
valueRulesApplied?boolean

Meta only (facebook, instagram; other platforms return 400). Optional when attaching, and requires valueRuleSetId. false is REJECTED here with 400: a newly created ad set has nothing to detach, so detaching lives on PUT /v1/ads/ad-sets/{adSetId}.

platformSpecificData?|

Platform-specific options. The platform is derived from accountId; sending options for a different platform returns a 400. LinkedIn (campaign bidding and delivery controls) and Meta (the bid trio) have options today.

Meta: bidStrategy, bidAmount and roasAverageFloor may be sent here instead of at the root — the preferred home going forward. Sending the bid fields in BOTH places returns a 400 (mutually_exclusive_fields), and sending any of them in adSetId attach mode is a 400 too (the ad set already has its bid). dailyMinSpendTarget / lifetimeMinSpendTarget set the new ad set's minimum spend and live here only; they are rejected in adSetId attach mode as well.

dsaBeneficiary?string

Legal entity that benefits from the ad. Required when targeting EU users (EU DSA, Article 26). Optional if the ad account has a default beneficiary: set it once via PATCH /v1/ads/accounts or in Meta Ads Manager, and Meta fills it in whenever the field is omitted.

Lengthlength <= 100
dsaPayor?string

Legal entity that pays for the ad. Can differ from dsaBeneficiary (for example, an agency paying for a client's ads). Same rules as dsaBeneficiary: required for EU targeting unless the ad account has a default payor.

Lengthlength <= 100
brandIdentity?

TikTok only. Synthetic Brand Identity used when the ad attributes to a CUSTOMIZED_USER (instead of a real TT_USER @username). Required on the FIRST CUSTOMIZED_USER ad on a tiktokads SocialAccount with no cached identity; omit on subsequent ads (the identity is cached on the account after first creation). Non-TikTok platforms ignore this field.

Alternative: configure once via PATCH /v1/connect/tiktok-ads, then create ads without this field.

identityType?string

TikTok only. Forces the identity attribution on the ad:

  • TT_USER: the posting account's open_id (real @username branding). Requires a connected TikTok posting account on the same profile.
  • CUSTOMIZED_USER: synthetic Brand Identity (display name + avatar). Requires a configured Brand Identity (cached on the tiktokads SocialAccount via PATCH /v1/connect/tiktok-ads) or an inline brandIdentity to create one on the fly.

When omitted, defaults to TT_USER if a posting account is connected on this profile, else CUSTOMIZED_USER. Spark Ads (POST /v1/ads/boost) always use TT_USER regardless of this field — TikTok requires the original organic post's author identity for Spark.

Value in

  • "TT_USER"
  • "CUSTOMIZED_USER"
smartPlus?boolean

TikTok only. Creates the ad as a TikTok Upgraded Smart+ campaign: TikTok automates targeting, bidding and delivery. Supports goals conversions (Smart+ Web Conversions), lead_generation (Smart+ Lead Generation with a website form on linkUrl; TikTok Instant Forms not supported) and app_promotion (Smart+ App installs; the ad's destination is the app store, so linkUrl is not used). The web goals require promotedObject.pixelId AND promotedObject.customEventType; app_promotion requires promotedObject.applicationId instead. Targeting works like on any TikTok ad (defaults to countries: ["US"] when omitted); TikTok automates delivery within it. The budget lives on the Smart+ campaign (Campaign Budget Optimization); a lifetime budget additionally requires endDate. Cannot be combined with adSetId.

promotedObject?

What the ad optimises against. Behaviour depends on the platform.

Meta: forwarded to the ad set's promoted_object (snake-cased). Required for goals whose ad-set optimization_goal points at a specific event/page/app (without it Meta rejects the ad-set create with error_subcode: 1815430 "Please select a promoted object for your ad set"):

  • goal: conversions / lead_conversion (OFFSITE_CONVERSIONS): requires pixelId + customEventType, or customConversionId when optimising against a Custom Conversion (the conversion carries its own event definition). For a pixel CUSTOM event (one you named yourself in CAPI/Events Manager), send customEventType: OTHER + customEventStr with the event name.
  • goal: app_promotion (APP_INSTALLS): requires applicationId + objectStoreUrl
  • goal: lead_generation (LEAD_GENERATION): pageId is auto-filled from the connected Page when omitted

Other Meta goals (engagement, traffic, awareness, video_views) ignore this field.

TikTok: used by goal: conversions and the Smart+ goals (smartPlus: true).

  • pixelId maps to the ad group's pixel_id. Required: a TikTok website-conversion ad group without a pixel is rejected with 40002: Please select a pixel.
  • customEventType maps to the ad group's optimization_event (the pixel event to optimise for). Optional on the regular conversions flow, required on Smart+. See the customEventType field below for the valid TikTok codes.
  • applicationId (Smart+ goal: app_promotion only) maps to the ad group's app_id: the App ID of an app registered on the TikTok Ads account (Assets → Events → App Events). Install optimization needs the app's MMP tracking configured.

The remaining promotedObject.* fields are Meta-only. Platforms other than Meta and TikTok ignore promotedObject entirely.