> ## Documentation Index
> Fetch the complete documentation index at: https://docs.markifact.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Merge Custom Audiences

> Merge ready OpenAI Ads custom audiences into a new independent audience

Merge ready OpenAI Ads custom audiences into a new independent audience. Sources and campaign references stay unchanged. Poll the returned operation using its new custom\_audience\_id.

| | |
| - | - |
| **App** | OpenAI Ads |
| **Operation ID** | `openai_ads_merge_custom_audiences` |
| **Type** | Action |
| **Connection** | `openai_ads` (required) |
| **Credits per run** | 1 |
| **Agent / MCP tool** | Yes |

## Inputs

| Field | Type | Required | Default | Description |
| - | - | - | - | - |
| `name` | string | Yes | - | Name for the new independent audience. |
| `custom_audience_ids` | array of string or string | Yes | - | Two to 64 distinct ready source audience IDs, as a list or comma/newline-separated text. Sources remain unchanged and later updates do not propagate. |
| `idempotency_key` | string | Yes | - | Unique key for this merge. Reuse only with the original sources and name when retrying. |

## Output

**Type**: `Dict`

Native OpenAI Ads audience or membership-operation response. Membership status processing is not completion; retain returned IDs for follow-up.

**Fields**: dynamic (depend on the inputs)


This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.