Zernio
Zernio
API Reference

Targeting

Search targeting optionsGETSuggested bid and budget boundsPOSTImpressions, clicks and spend forecastPOSTEstimate audience reachPOST
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Targeting

Search targeting options

Resolve a human-readable query into the platform's opaque targeting ids used in the TargetingSpec (countries/regions/cities/zips/metros geo keys, and interests/behaviors entity ids) on POST /v1/ads/create, POST /v1/ads/targeting/reach-estimate, and saved_targeting audiences.

The dimension param selects what is searched, geo (locations, further scoped by geoType), interest, behavior, income, language (Google-only), or the Meta-only work demographics workPosition, workEmployer and workIndustry (their ids feed TargetingSpec.workPositions/workEmployers/workIndustries). Availability of each dimension varies by platform (e.g. behaviours are Meta/TikTok only). Work industries are a fixed ~30-entry Meta catalog with no server-side query, so workIndustry matching, ranking and limit happen in Zernio. language is likewise a fixed, checked-in table of Google's targetable language_constant rows (id, ISO code, name) matched by name or code, capped at 20, with no network call; its ids feed TargetingSpec.languages. Results are normalized across platforms into a single shape, so the same client code consumes Meta, TikTok, LinkedIn, X, Pinterest, and Google results.

TikTok geo searches return every matching level in one list (type is country, region, city, district, or metro for DMA areas) — geoType is not applied. Results are scoped to the advertiser's targetable markets, and every id is usable in regions/cities/metros keys on POST /v1/ads/create.

LinkedIn geo searches also return every matching level in one list, and neither geoType nor countryCode is applied: LinkedIn's typeahead only returns a name and a URN per result, with no level or country field to filter on. Every result has type set to location, and its id is a urn:li:geo:* URN usable as a regions[].key on POST /v1/ads/create, POST /v1/ads/boost and POST /v1/ads/targeting/reach-estimate.

Google geo searches resolve against Google's geoTargetConstants and return every matching level in one list; geoType is not applied (Google's target_type is an open taxonomy that does not map one-to-one onto the geoType enum), so filter client-side on the returned type (country, region, city, zip, metro, or the lowercased Google target type for rarer levels). countryCode scopes the search to one country. Each id is Google's numeric criterion id, usable as a regions/cities/zips/metros key on POST /v1/ads/create. Google city radius is not supported (pass a customLocations lat/lng pin for a radius); country targeting also accepts plain ISO codes via countries with no search call.

Pinterest resolves against three whole-catalog endpoints (interests, locations, regions) with no server-side query or pagination, so matching, ranking and the limit cutoff all happen in Zernio; the catalog is independent of any ad account and results never carry audienceSize. Names come back localized to the connected Pinterest account's language (there is no way to force a locale), so match against whatever language that account returns. geoType routes to a different catalog: country and metro_area read the locations catalog (type is country or metro); region reads the regions catalog (type is region, its id a regions[].key on POST /v1/ads/create); all and the default city merge both catalogs with honest per-entry types, since Pinterest has no city-level catalog and city is an alias for all, not a literal city search. zip, subcity, neighborhood, place and geo_market return a 400: Pinterest exposes no postal-code catalog, pass postal codes directly as targeting.zips: [{ key }] on POST /v1/ads/create.

For geo queries, q should contain only the locality name (e.g. "Amsterdam", not "Amsterdam, NL"). Use countryCode to disambiguate.


PlatformsMetaGoogleTikTokLinkedInPinterest
GET
/v1/ads/targeting/search

Authorization

bearerAuth
AuthorizationBearer <token>

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

In: header

Query Parameters

accountId*string

Social account ID (a connected account on the target ad platform).

q*string

Search query. For geo, the locality name only (no region/country suffix).

dimension?string

What to search. geo resolves locations (scope further with geoType), interest/behavior resolve audience entities, income resolves income-tier options, language resolves Google's targetable language_constant table (Google only), workPosition/workEmployer/workIndustry resolve Meta work demographics. Defaults to interest for backward compatibility with the deprecated /v1/ads/interests alias.

Default"interest"

Value in

  • "geo"
  • "interest"
  • "behavior"
  • "income"
  • "language"
  • "workPosition"
  • "workEmployer"
  • "workIndustry"
geoType?string

Only used when dimension=geo. The kind of location to resolve. all searches every type in one relevance-ranked call. Defaults to city.

Default"city"

Value in

  • "all"
  • "country"
  • "region"
  • "city"
  • "subcity"
  • "neighborhood"
  • "place"
  • "zip"
  • "metro_area"
  • "geo_market"
countryCode?string

ISO 3166-1 alpha-2 country code (e.g. NL) to scope a geo search.

Length2 <= length <= 2
limit?integer

Maximum results to return.

Range1 <= value <= 100
Default25

Response Body

application/json

application/json

{  "results": [    {      "id": "string",      "name": "string",      "type": "string",      "path": [        "string"      ],      "audienceSize": 0    }  ]}
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Replace audience companies

Upload the company rows of a LinkedIn `company_list` audience (account-based marketing). LinkedIn-only, every other platform returns 422. A LinkedIn audience segment holds exactly one uploaded list, so the list you send here REPLACES the segment's list instead of being appended to it: always send the full set of companies. LinkedIn returns only the identifier of the uploaded file, never its rows, so the merge cannot be done for you, keep the source list on your side. LinkedIn does not document how quickly companies dropped from the list stop being targeted, so treat removals as eventual rather than immediate. Rows are plain text (not hashed), matched against LinkedIn's own company graph. Matching is asynchronous: LinkedIn takes up to 48h for a new audience and up to 24h for a later update, and the audience stays `processing` meanwhile. LinkedIn recommends at least 1,000 companies for a usable match rate, and caps a list at 300,000. The initial list is sent with `companies` on `POST /v1/ads/audiences`; this endpoint is for every change after that.

Suggested bid and budget bounds

LinkedIn-only. Returns the suggested bid and bid limits for a targeting spec, plus the daily-budget bounds LinkedIn will accept. Use it before creating a campaign to pick a bid inside the allowed range and warn the user if their daily budget is below the minimum. Wraps LinkedIn's `adBudgetPricing` finder. Non-LinkedIn accounts return `available: false` so clients can hide the pricing UI without treating it as a failure.