---
title: AI Security for Apps fields
description: Fields available for AI Security for Apps detections in rule expressions.
image: https://developers.cloudflare.com/core-services-preview.png
---

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

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### Tags

[ AI ](https://developers.cloudflare.com/search/?tags=AI) 

# AI Security for Apps fields

When enabled, AI Security for Apps populates the following fields:

| Field                                                                                                                                                                                                             | Description                                                                                                                                                                                                                                                                       |
| ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| LLM PII detected [cf.llm.prompt.pii\_detected](https://developers.cloudflare.com/ruleset-engine/rules-language/fields/reference/cf.llm.prompt.pii%5Fdetected/)  Boolean                                           | Indicates whether any personally identifiable information (PII) has been detected in the LLM prompt included in the request.                                                                                                                                                      |
| LLM PII categories [cf.llm.prompt.pii\_categories](https://developers.cloudflare.com/ruleset-engine/rules-language/fields/reference/cf.llm.prompt.pii%5Fcategories/)  Array<String>                               | Array of string values with the personally identifiable information (PII) categories found in the LLM prompt included in the request.[Category list](https://developers.cloudflare.com/ruleset-engine/rules-language/fields/reference/cf.llm.prompt.pii%5Fcategories/)            |
| LLM Content detected [cf.llm.prompt.detected](https://developers.cloudflare.com/ruleset-engine/rules-language/fields/reference/cf.llm.prompt.detected/)  Boolean                                                  | Indicates whether Cloudflare detected an LLM prompt in the incoming request.                                                                                                                                                                                                      |
| LLM Unsafe topic detected [cf.llm.prompt.unsafe\_topic\_detected](https://developers.cloudflare.com/ruleset-engine/rules-language/fields/reference/cf.llm.prompt.unsafe%5Ftopic%5Fdetected/)  Boolean             | Indicates whether the incoming request includes any unsafe topic category in the LLM prompt.                                                                                                                                                                                      |
| LLM Unsafe topic categories [cf.llm.prompt.unsafe\_topic\_categories](https://developers.cloudflare.com/ruleset-engine/rules-language/fields/reference/cf.llm.prompt.unsafe%5Ftopic%5Fcategories/)  Array<String> | Array of string values with the type of unsafe topics detected in the LLM prompt.[Category list](https://developers.cloudflare.com/ruleset-engine/rules-language/fields/reference/cf.llm.prompt.unsafe%5Ftopic%5Fcategories/)                                                     |
| LLM Injection score [cf.llm.prompt.injection\_score](https://developers.cloudflare.com/ruleset-engine/rules-language/fields/reference/cf.llm.prompt.injection%5Fscore/)  Number                                   | A score from 1–99 that represents the likelihood that the LLM prompt in the request is trying to perform a prompt injection attack. Lower scores indicate higher risk.                                                                                                            |
| LLM Token count [cf.llm.prompt.token\_count](https://developers.cloudflare.com/ruleset-engine/rules-language/fields/reference/cf.llm.prompt.token%5Fcount/)  Number                                               | An estimated token count for the LLM prompt in the request. Refer to [Token counting](https://developers.cloudflare.com/waf/detections/ai-security-for-apps/token-counting/) for details.                                                                                         |
| LLM Custom topic categories [cf.llm.prompt.custom\_topic\_categories](https://developers.cloudflare.com/ruleset-engine/rules-language/fields/reference/cf.llm.prompt.custom%5Ftopic%5Fcategories/)  Map<Number>   | A map of custom topic labels to relevance scores (1–99). Lower scores indicate the prompt is more relevant to that topic. Only populated when [custom topics](https://developers.cloudflare.com/waf/detections/ai-security-for-apps/unsafe-topics/#custom-topics) are configured. |

```json
{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"/directory/","name":"Directory"}},{"@type":"ListItem","position":2,"item":{"@id":"/waf/","name":"WAF"}},{"@type":"ListItem","position":3,"item":{"@id":"/waf/detections/","name":"Traffic detections"}},{"@type":"ListItem","position":4,"item":{"@id":"/waf/detections/ai-security-for-apps/","name":"AI Security for Apps"}},{"@type":"ListItem","position":5,"item":{"@id":"/waf/detections/ai-security-for-apps/fields/","name":"AI Security for Apps fields"}}]}
```