---
title: cf.llm.prompt.custom_topic_categories
description: A map of custom topic labels to relevance scores (1–99) for the LLM prompt in the request.
image: https://developers.cloudflare.com/core-services-preview.png
---

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

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#  cf.llm.prompt.custom\_topic\_categories 

`cf.llm.prompt.custom_topic_categories` ` Map<Number> ` 

A map of custom topic labels to relevance scores (1–99) for the LLM prompt in the request.

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.

Requires a Cloudflare Enterprise plan. You must also enable [AI Security for Apps](https://developers.cloudflare.com/waf/detections/ai-security-for-apps/).

Example usage:

```
# Matches requests where the prompt is highly relevant to the "competitors" custom topic:(cf.llm.prompt.custom_topic_categories["competitors"] lt 30)
```

Categories: 
* Request

```json
{"@context":"https://schema.org","@type":"TechArticle","@id":"https://developers.cloudflare.com/ruleset-engine/rules-language/fields/reference/cf.llm.prompt.custom_topic_categories/#page","headline":"cf.llm.prompt.custom_topic_categories · Cloudflare Ruleset Engine docs","description":"A map of custom topic labels to relevance scores (1–99) for the LLM prompt in the request.","url":"https://developers.cloudflare.com/ruleset-engine/rules-language/fields/reference/cf.llm.prompt.custom_topic_categories/","inLanguage":"en","image":"https://developers.cloudflare.com/core-services-preview.png","publisher":{"@type":"Organization","name":"Cloudflare","url":"https://www.cloudflare.com/"},"isPartOf":{"@type":"WebSite","@id":"https://developers.cloudflare.com/#website","name":"Cloudflare Docs","url":"https://developers.cloudflare.com/"}}
{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"/directory/","name":"Directory"}},{"@type":"ListItem","position":2,"item":{"@id":"/ruleset-engine/","name":"Ruleset Engine"}},{"@type":"ListItem","position":3,"item":{"@id":"/ruleset-engine/rules-language/","name":"Rules language"}},{"@type":"ListItem","position":4,"item":{"@id":"/ruleset-engine/rules-language/fields/","name":"Fields"}},{"@type":"ListItem","position":5,"item":{"@id":"/ruleset-engine/rules-language/fields/reference/","name":"Fields reference"}}]}
```