# Add ChatGPT Ads custom audience members

Preview and confirm adding up to 10,000 customers to a ready ChatGPT Ads custom audience. Works on your own ChatGPT Ads account, connected through Get MCP Ads. The preview is free; the change costs $0.05 when you confirm it. Needs ad account id, custom audience id, members and more.

Preview and confirm adding up to 10,000 customers to a ready ChatGPT Ads custom audience. Emails and E.164 phones are normalized and SHA-256 hashed by the server; raw identifiers are never sent, saved or returned. Then poll openai_ads_get_audience_operation. Agentik price: free to preview; $0.05 when the change is applied (confirm: true without validateOnly).

- Tool ID: `chatgpt-ads/add-custom-audience-members`
- Name in the catalog: ChatGPT Ads: Add custom audience members
- Provider: [ChatGPT Ads](/providers/chatgpt-ads.md)
- Capability: [ChatGPT Ads audiences & targeting](/tools/chatgpt-ads/audiences.md)
- Price: free preview, $0.05 per applied change
- Workspace access is automatic. Connect a platform using the link and notice returned to your AI assistant; an owner or admin completes platform consent and returns to the conversation; see the [guide](/docs/getmcpads.md).
- Authentication: an authorised Agentik workspace is required for execution, including zero-price tools.

## Pricing contract

The provider’s price, with no markup. Billed for measured usage.


```json
{
  "model": "per_call",
  "amountUsd": 0,
  "multipliers": [
    {
      "all": [
        {
          "field": "confirm",
          "equals": true
        },
        {
          "field": "validateOnly",
          "truthy": false
        }
      ],
      "setUsd": 0.05
    }
  ]
}
```

## Complete input schema


```json
{
  "type": "object",
  "properties": {
    "adAccountId": {
      "type": "string",
      "pattern": "^adacct_[A-Za-z0-9_-]{1,128}$",
      "description": "Exact verified and selected ChatGPT Ads account ID; the token is scoped to this account."
    },
    "customAudienceId": {
      "type": "string",
      "pattern": "^[A-Za-z0-9_-]{1,160}$",
      "description": "Exact native ID of a ready custom audience in the selected account."
    },
    "members": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "email": {
            "type": "string",
            "maxLength": 320
          },
          "phone": {
            "type": "string",
            "maxLength": 40
          },
          "email_sha256": {
            "type": "string",
            "maxLength": 128
          },
          "phone_number_sha256": {
            "type": "string",
            "maxLength": 128
          }
        },
        "additionalProperties": false
      },
      "minItems": 1,
      "maxItems": 10000,
      "description": "Customers, one identifier each: email, phone (E.164 with + and country code), or an existing SHA-256 digest (email_sha256, phone_number_sha256). The server normalizes and hashes them; raw values are never sent, saved or returned."
    },
    "requestId": {
      "type": "string",
      "format": "uuid",
      "description": "Stable UUID for this exact change. Reuse it to read its receipt; never replace an uncertain outcome."
    },
    "confirm": {
      "type": "boolean",
      "default": false,
      "description": "False returns a saved preview. True applies only the exact preview the person approved."
    },
    "confirmationToken": {
      "type": "string",
      "format": "uuid",
      "description": "Saved preview token returned for these arguments."
    },
    "workspace_id": {
      "type": "string",
      "description": "Authorized workspace ID from list_accounts/list_workspaces. Use the user's chosen workspace; never guess between clients. Optional when a unique account identifies it."
    },
    "reason": {
      "type": "string",
      "maxLength": 500,
      "description": "Why, in the person's words or from the evidence (e.g. CPA twice the target for 7 days). Saved with the change in the shared client journal."
    }
  },
  "required": [
    "adAccountId",
    "customAudienceId",
    "members",
    "requestId"
  ]
}
```

## Published example

No example input is published for this tool. Ask for the inputs required by its schema.

## Execute and retrieve

Inspect again before execution, explain the price and obtain the required authority. Use MCP run_tool or POST /v1/run with this tool ID, valid input and an idempotency key. Save the returned run ID and follow the actual state. If Agentik answers that the tool is temporarily unavailable, do not retry it blindly; use discovery to propose an alternative.

A partial or uncertain result can still have consumed provider resources. Consult [billing](/docs/billing.md), [idempotency](/docs/idempotency.md) and [asynchronous results](/docs/async.md).

[REST inspection](https://api.agentik.cc/v1/tools/chatgpt-ads/add-custom-audience-members) · [OpenAPI](/openapi.json) · [Connection guide](/connect.md)

## Provider websites

- [Get MCP Ads](https://www.getmcpads.com/)

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[HTML page](/providers/chatgpt-ads/add-custom-audience-members) · [Agent index](/llms.txt)