latestOpenAPI 3.1.02026-08-153864115.7 MB
c301132dbfd7
Audiences
Add People
Adds users from a new CSV file to an existing uploaded custom audience. The file uses the audience's saved column mapping, processing happens in the background, and existing audience members remain unchanged.
post/audiences/{id}/add_people
Path parameters
idstring required
Audience ID, prefixed adaud_.
Headers
Idempotency-Keystring
Example:d9105228-4a08-46b1-8b91-42fed586d383
A unique key that makes this request safe to retry. See Idempotent requests.
Request body
Example request
{
"file_id": "file_xxxxxxxxxxxxxx"
}Response
Audience upload accepted.
Example response
{
"audience_type": "lookalike",
"created_at": "2026-01-01T12:00:00.000Z",
"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"
}