---
title: Common API calls
description: Manage malicious upload detection using the Cloudflare API.
image: https://edgetunnel-b2h.pages.dev/core-services-preview.png
---

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# Common API calls

The following examples address common scenarios of using the Cloudflare API to manage and configure WAF content scanning.

If you are using Terraform, refer to [Terraform configuration examples](https://edgetunnel-b2h.pages.dev/waf/detections/malicious-uploads/terraform-examples/).

## General operations

The following API examples cover basic operations such as enabling and disabling WAF content scanning.

### Enable WAF content scanning

To enable content scanning, use a `POST` request similar to the following:

Required API token permissions

At least one of the following [token permissions](https://edgetunnel-b2h.pages.dev/fundamentals/api/reference/permissions/) is required: 
* `Zone WAF Write`
* `Account WAF Write`

**Enable Content Scanning**

```bash
curl "https://api.cloudflare.com/client/v4/zones/$ZONE_ID/content-upload-scan/enable" \
  --request POST \
  --header "Authorization: Bearer $CLOUDFLARE_API_TOKEN"
```

### Disable WAF content scanning

To disable content scanning, use a `POST` request similar to the following:

Required API token permissions

At least one of the following [token permissions](https://edgetunnel-b2h.pages.dev/fundamentals/api/reference/permissions/) is required: 
* `Zone WAF Write`
* `Account WAF Write`

**Disable Content Scanning**

```bash
curl "https://api.cloudflare.com/client/v4/zones/$ZONE_ID/content-upload-scan/disable" \
  --request POST \
  --header "Authorization: Bearer $CLOUDFLARE_API_TOKEN"
```

### Get WAF content scanning status

To obtain the current status of the content scanning feature, use a `GET` request similar to the following:

Required API token permissions

At least one of the following [token permissions](https://edgetunnel-b2h.pages.dev/fundamentals/api/reference/permissions/) is required: 
* `Zone WAF Write`
* `Zone WAF Read`
* `Account WAF Write`
* `Account WAF Read`

**Get Content Scanning Status**

```bash
curl "https://api.cloudflare.com/client/v4/zones/$ZONE_ID/content-upload-scan/settings" \
  --request GET \
  --header "Authorization: Bearer $CLOUDFLARE_API_TOKEN"
```

## Custom expression operations

The following API examples cover operations on custom scan expressions for content scanning.

### Get existing custom scan expressions

To get a list of existing custom scan expressions, use a `GET` request similar to the following:

Required API token permissions

At least one of the following [token permissions](https://edgetunnel-b2h.pages.dev/fundamentals/api/reference/permissions/) is required: 
* `Zone WAF Write`
* `Zone WAF Read`
* `Account WAF Write`
* `Account WAF Read`

**List Existing Custom Scan Expressions**

```bash
curl "https://api.cloudflare.com/client/v4/zones/$ZONE_ID/content-upload-scan/payloads" \
  --request GET \
  --header "Authorization: Bearer $CLOUDFLARE_API_TOKEN"
```

```json
{
  "result": [
    {
      "id": "<EXPRESSION_ID>",
      "payload": "lookup_json_string(http.request.body.raw, \"file\")"
    }
  ],
  "success": true,
  "errors": [],
  "messages": []
}
```

### Add a custom scan expression

Use a `POST` request similar to the following:

Required API token permissions

At least one of the following [token permissions](https://edgetunnel-b2h.pages.dev/fundamentals/api/reference/permissions/) is required: 
* `Zone WAF Write`
* `Account WAF Write`

**Add Custom Scan Expressions**

```bash
curl "https://api.cloudflare.com/client/v4/zones/$ZONE_ID/content-upload-scan/payloads" \
  --request POST \
  --header "Authorization: Bearer $CLOUDFLARE_API_TOKEN" \
  --json '[
    {
        "payload": "lookup_json_string(http.request.body.raw, \"file\")"
    }
  ]'
```

### Delete a custom scan expression

Use a `DELETE` request similar to the following:

Required API token permissions

At least one of the following [token permissions](https://edgetunnel-b2h.pages.dev/fundamentals/api/reference/permissions/) is required: 
* `Zone WAF Write`
* `Account WAF Write`

**Delete a Custom Scan Expression**

```bash
curl "https://api.cloudflare.com/client/v4/zones/$ZONE_ID/content-upload-scan/payloads/$EXPRESSION_ID" \
  --request DELETE \
  --header "Authorization: Bearer $CLOUDFLARE_API_TOKEN"
```

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```