Jul 28, 2026 — Expanded audience support now available; legacy audience endpoints deprecation date is Oct 8, 2026

The following audience capabilities are now generally available in Ads API:

What's new	Description
`GET /developer/audiences/custom`	Returns a list of custom audiences. Pass a `uid` as a query parameter to retrieve a single audience. Supports both file-based and event-based audiences. This endpoint replaces the legacy `GET` `/developer/audiences` and `GET /developer/audiences/{uid}` endpoints.
`GET /developer/audiences/standard`	Returns a list of Roku-curated standard audiences available for targeting on your ad account.
`GET` `/developer/event_groups`	Returns a list of event groups. Event groups are required to build event-based custom audiences and to associate conversion events with an ad group.
`POST` `/developer/audiences`	Now supports creating event-based custom audiences in addition to file-based audiences.

GET /developer/audiences and GET /developer/audiences/{uid} will be deprecated on Oct 8, 2026. To avoid a disruption, migrate to GET /developer/audiences/custom before the sunset date. Reminder notices will be sent at the 60, 30, and 10-day marks.