# Create Lookalike Audience — TikTok Ads Manager

> Create a TikTok lookalike audience based on an existing custom audience. TikTok finds users who share characteristics with the source audience. Use List Audiences to find the source audience ID. audience_size controls reach vs accuracy…

- Key: `tiktok_ads_manager-create-lookalike-audience`
- Type: Action (Write)
- Version: 0.0.2
- App: TikTok Ads Manager (`tiktok_ads_manager`) — https://pipedream.com/apps/tiktok-ads-manager.md
- This page (HTML): https://pipedream.com/apps/tiktok-ads-manager/actions/create-lookalike-audience
- Hints: open-world
- Source: https://github.com/PipedreamHQ/pipedream/blob/master/components/tiktok_ads_manager/actions/create-lookalike-audience/create-lookalike-audience.mjs

## Description

Create a TikTok lookalike audience based on an existing custom audience. TikTok finds users who share characteristics with the source audience. Use **List Audiences** to find the source audience ID. `audience_size` controls reach vs accuracy: `NARROW` = most similar (smallest), `BALANCED` = mixed, `BROAD` = largest reach. Location IDs: `6252001` = United States, `6269131` = United Kingdom. Newly created audiences require up to 48 hours to be analyzed before they become active. [See the documentation](https://business-api.tiktok.com/portal/docs/create-a-lookalike-audience/v1.3)

## Props

| Prop | Type | Required | Description |
|---|---|---|---|
| `advertiserId` | `string` | Yes | Your TikTok Ads Manager advertiser ID. Find it in the Ads Manager URL after aadvid= (e.g., aadvid=7123456789012345678). Also visible under Account Info in Business Center. |
| `audienceName` | `string` | Yes | Display name for the new lookalike audience. Maximum 128 characters. |
| `sourceAudienceId` | `string` | Yes | ID of the custom audience to base the lookalike on. Cannot be an existing lookalike audience. Source audience must have at least 100 members. Use List Audiences to find the ID. |
| `audienceSize` | `string` | Yes | Reach vs similarity tradeoff. NARROW = closest match (smallest audience). BALANCED = mixed. BROAD = largest reach (least similar). |
| `locationIds` | `string[]` | Yes | Target geographic locations by TikTok location ID. Example: 6252001 = United States, 6269131 = United Kingdom. |
| `includeSource` | `boolean` | Yes | Whether to include the source audience members in the new lookalike audience. |
| `mobileOs` | `string` | Yes | Device operating systems to target. ALL targets both Android and iOS. |
| `placements` | `string[]` | Yes | Apps where the audience can be used. TikTok is the standard placement. |

## Run it

**MCP**

```ts
import { Client } from "@modelcontextprotocol/sdk/client/index.js"
import { StreamableHTTPClientTransport } from "@modelcontextprotocol/sdk/client/streamableHttp.js"
import { PipedreamClient } from "@pipedream/sdk"

const pd = new PipedreamClient({
  projectId: process.env.PIPEDREAM_PROJECT_ID!,
  clientId: process.env.PIPEDREAM_CLIENT_ID!,
  clientSecret: process.env.PIPEDREAM_CLIENT_SECRET!,
  projectEnvironment: "production",
})

const accessToken = await pd.rawAccessToken

const transport = new StreamableHTTPClientTransport(
  new URL("https://remote.mcp.pipedream.net/v3"),
  {
    requestInit: {
      headers: {
        Authorization: `Bearer ${accessToken}`,
        "x-pd-project-id": process.env.PIPEDREAM_PROJECT_ID!,
        "x-pd-environment": "production",
        "x-pd-external-user-id": "{external_user_id}", // any stable ID for this user in your system
        "x-pd-app-slug": "tiktok_ads_manager",
      },
    },
  },
)

const mcp = new Client({ name: "my-agent", version: "1.0.0" })
await mcp.connect(transport)

const { tools } = await mcp.listTools()

// listTools() hands your model this tool's input schema, so it can
// fill the arguments itself:
const result = await mcp.callTool({
  name: "tiktok_ads_manager-create-lookalike-audience",
  arguments: {
    advertiserId: "Advertiser ID",
    audienceName: "Audience Name",
  },
})
```

**TypeScript**

```ts
import { PipedreamClient } from "@pipedream/sdk"

const pd = new PipedreamClient({
  projectId: process.env.PIPEDREAM_PROJECT_ID!,
  clientId: process.env.PIPEDREAM_CLIENT_ID!,
  clientSecret: process.env.PIPEDREAM_CLIENT_SECRET!,
  projectEnvironment: "production",
})

const result = await pd.actions.run({
  id: "tiktok_ads_manager-create-lookalike-audience",
  externalUserId: "{external_user_id}", // any stable ID for this user in your system
  configuredProps: {
    tiktok_ads_manager: { authProvisionId: "apn_xxxxxxx" },
    advertiserId: "Advertiser ID",
    audienceName: "Audience Name",
  },
})

console.log(result)
```

**cURL**

```bash
curl -X POST https://api.pipedream.com/v1/connect/{project_id}/actions/run \
  -H "Content-Type: application/json" \
  -H "X-PD-Environment: production" \
  -H "Authorization: Bearer {access_token}" \
  -d '{
    "external_user_id": "{external_user_id}",
    "id": "tiktok_ads_manager-create-lookalike-audience",
    "configured_props": {
      "tiktok_ads_manager": { "authProvisionId": "apn_xxxxxxx" },
      "advertiserId": "Advertiser ID",
      "audienceName": "Audience Name"
    }
  }'
```

---

- App: https://pipedream.com/apps/tiktok-ads-manager.md · All apps: https://pipedream.com/apps