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

# Create List

> Create a new contact list

## Request

### Headers

```
Authorization: Bearer wbk_your_api_key_here
Content-Type: application/json
```

### Body Parameters

<ParamField body="name" type="string" required>
  List name (must be unique within your workspace)
</ParamField>

<ParamField body="description" type="string">
  Optional description of the list's purpose
</ParamField>

## Response

<ResponseField name="data" type="object">
  The created list object

  <Expandable title="List properties">
    <ResponseField name="id" type="string">
      Unique list ID (UUID)
    </ResponseField>

    <ResponseField name="name" type="string">
      List name
    </ResponseField>

    <ResponseField name="description" type="string">
      List description
    </ResponseField>

    <ResponseField name="contact_count" type="integer">
      Number of contacts (0 for new list)
    </ResponseField>

    <ResponseField name="created_at" type="string">
      ISO 8601 timestamp
    </ResponseField>
  </Expandable>
</ResponseField>

<CodeGroup>
  ```bash cURL theme={null}
  curl -X POST \
    https://data.leadlex.com/functions/v1/api-gateway/v1/lists \
    -H "Authorization: Bearer wbk_your_api_key_here" \
    -H "Content-Type: application/json" \
    -d '{
      "name": "Outreach Q2 2026",
      "description": "Prospects for Q2 campaign"
    }'
  ```

  ```python Python theme={null}
  import requests

  API_KEY = "wbk_your_api_key_here"
  BASE_URL = "https://data.leadlex.com/functions/v1/api-gateway"

  headers = {
      "Authorization": f"Bearer {API_KEY}",
      "Content-Type": "application/json"
  }

  data = {
      "name": "Outreach Q2 2026",
      "description": "Prospects for Q2 campaign"
  }

  response = requests.post(f"{BASE_URL}/v1/lists", headers=headers, json=data)
  new_list = response.json()["data"]
  print(f"Created list: {new_list['id']}")
  ```

  ```javascript JavaScript theme={null}
  const response = await fetch(
    'https://data.leadlex.com/functions/v1/api-gateway/v1/lists',
    {
      method: 'POST',
      headers: {
        'Authorization': 'Bearer wbk_your_api_key_here',
        'Content-Type': 'application/json'
      },
      body: JSON.stringify({
        name: 'Outreach Q2 2026',
        description: 'Prospects for Q2 campaign'
      })
    }
  );

  const { data } = await response.json();
  console.log(`Created list: ${data.id}`);
  ```
</CodeGroup>

### Example Response

```json theme={null}
{
  "data": {
    "id": "xyz98765-4321-abcd-ef01-234567890xyz",
    "name": "Outreach Q2 2026",
    "description": "Prospects for Q2 campaign",
    "contact_count": 0,
    "created_at": "2026-02-24T15:30:00Z"
  }
}
```

## Errors

| Status | Code                       | Description                              |
| ------ | -------------------------- | ---------------------------------------- |
| 400    | `validation_error`         | Missing required field or duplicate name |
| 401    | `invalid_key`              | Invalid API key                          |
| 403    | `insufficient_permissions` | Missing `write` permission               |
| 429    | `rate_limited`             | Rate limit exceeded                      |

### Example Error (Duplicate Name)

```json theme={null}
{
  "error": {
    "code": "validation_error",
    "message": "A list with this name already exists",
    "details": {
      "fields": {
        "name": "Must be unique"
      }
    }
  }
}
```