---
title: fastly.bot.category.is_ai_crawler
summary: null
url: >-
  https://www.fastly.com/documentation/reference/vcl/variables/miscellaneous/fastly-bot-category-is-ai-crawler
---

**Type:** BOOL  
**Access:** read-only

**Available in:** recv, hash, deliver, log

Whether the detected bot is an AI Crawler.

Crawlers used for training AIs and LLMs, generally used for building AI models or indexes.