## List Existing Custom Scan Expressions

`content_scanning.payloads.list(PayloadListParams**kwargs)  -> SyncSinglePage[PayloadListResponse]`

**get** `/zones/{zone_id}/content-upload-scan/payloads`

Get a list of existing custom scan expressions for Content Scanning.

### Parameters

- `zone_id: str`

  Defines an identifier.

### Returns

- `class PayloadListResponse: …`

  Defines a custom scan expression to match Content Scanning on.

  - `id: Optional[str]`

    defines the unique ID for this custom scan expression.

  - `payload: Optional[str]`

    Defines the ruleset expression to use in matching content objects.

### Example

```python
import os
from cloudflare import Cloudflare

client = Cloudflare(
    api_token=os.environ.get("CLOUDFLARE_API_TOKEN"),  # This is the default and can be omitted
)
page = client.content_scanning.payloads.list(
    zone_id="023e105f4ecef8ad9ca31a8372d0c353",
)
page = page.result[0]
print(page.id)
```

#### Response

```json
{
  "errors": [
    {
      "code": 1000,
      "message": "message",
      "documentation_url": "documentation_url",
      "source": {
        "pointer": "pointer"
      }
    }
  ],
  "messages": [
    {
      "code": 1000,
      "message": "message",
      "documentation_url": "documentation_url",
      "source": {
        "pointer": "pointer"
      }
    }
  ],
  "result": [
    {
      "id": "a350a054caa840c9becd89c3b4f0195b",
      "payload": "lookup_json_string(http.request.body.raw, \"file\")"
    }
  ],
  "success": true
}
```