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Audiences

Create Audience

Create an audience from a customer list, your account's Whop People data, or engagement with videos, lead forms, Instagram profiles, or Facebook pages. Create lookalike audiences to reach people similar to an existing audience. Processing runs asynchronously. Custom creation returns one audience; lookalike creation returns the requested similarity bands in data.

post/audiences

Headers

Idempotency-Keystring
Example:d9105228-4a08-46b1-8b91-42fed586d383

A unique key that makes this request safe to retry. See Idempotent requests.

Request body

account_idstring required

Account ID, prefixed biz_.

audience_type'custom' | 'lookalike'

Audience type. Defaults to custom.

auto_refreshboolean

Filter audiences only, and set only at creation. true (the default) rebuilds membership from the filters twice a day. false keeps whoever matched at creation and never rebuilds.

countinteger

Lookalikes only. Number of lookalike audiences to create (1–6).

file_idstring

CSV audiences only. The uploaded customer CSV — a file id (file_...) returned by POST /files.

filtersobject

Filter audiences only. The People filters that define membership, keyed exactly as GET /people accepts them — for example {"os": "iOS", "country": "US"}. Date filters must be rolling windows — first_seen_within_days or last_seen_within_days — so the audience re-anchors on every refresh; fixed dates such as first_seen_after are rejected. Source values are canonical source paths (whop:<campaign>:<group>:<ad>, ext:<platform>:..., referrer:<domain>, direct), exact or with a trailing :* wildcard.

namestring

Audience display name. Required for custom audiences; lookalike names are generated from the source audience.

percentageinteger

Lookalikes only. Total similarity reach as a whole percent (1–20), sliced evenly across count — must be divisible by count. For example, 3 audiences at 6% creates 0–2%, 2–4%, and 4–6% bands.

source_audience_idstring

Lookalikes only. The ready custom audience (adaud_) to build from; uploaded and People audiences need at least 100 matched people. Meta validates engagement audience eligibility when creating the lookalike.

source_type'csv_upload' | 'people_filter' | 'engagement'

Custom audience source. Inferred from engagement, then filters, otherwise defaults to csv_upload. Supply only the fields for the selected source.

Example request

{
  "account_id": "biz_xxxxxxxxxxxxxx",
  "engagement": {
    "include": [
      {
        "event": "engaged",
        "object": "facebook_page",
        "retention_days": 30,
        "social_account_id": "sacc_xxxxxxxxxxxxxx"
      }
    ],
    "platform": "meta"
  },
  "name": "Page engagers",
  "source_type": "engagement"
}

Response

Audience created. Custom creation returns one audience; lookalike creation returns an array in data.

OR

Example response

{
  "audience_type": "lookalike",
  "created_at": "2026-01-01T12:00:00.000Z",
  "engagement": {
    "exclude": [
      {
        "event": "watched_50_percent",
        "object": "video",
        "platform_video_ids": [
          "444"
        ],
        "retention_days": 30,
        "social_account_id": "sacc_xxxxxxxxxxxxxx"
      }
    ],
    "include": [
      {
        "event": "watched_50_percent",
        "object": "video",
        "platform_video_ids": [
          "444"
        ],
        "retention_days": 30,
        "social_account_id": "sacc_xxxxxxxxxxxxxx"
      }
    ],
    "platform": "meta"
  },
  "error_message": "412 of 1,000 rows had no email or phone number, so the list could not be matched.",
  "filters": {
    "country": "US",
    "last_seen_within_days": 30
  },
  "id": "adaud_xxxxxxxxxxxxxx",
  "last_refreshed_at": "2026-01-01T12:00:00.000Z",
  "lookalike_ratio": 0.04,
  "lookalike_starting_ratio": 0.02,
  "match_rates": [
    {
      "lower_bound": 40,
      "platform": "meta",
      "status": "available",
      "upper_bound": 50
    }
  ],
  "name": "Past purchasers Lookalike 2–4%",
  "platform_audience_ids": [
    "120246230799130687"
  ],
  "source_audience_id": "adaud_xxxxxxxxxxxxxx",
  "source_type": "csv_upload",
  "updated_at": "2026-01-01T12:00:00.000Z"
}

Changes