What is Google-CloudVertexBot?
Google-CloudVertexBot is an AI assistant crawler. Crawling preferences addressed to the Google-CloudVertexBot user agent affect crawls requested by the site owners' for building Vertex AI Agents. It has no effect on Google Search or other products.
Google-CloudVertexBot helps decide whether you show up in AI answers. It fetches and indexes pages so its assistant can cite them in responses, which means the content it can reach is the content that can be quoted, linked, and recommended to users. For generative engine optimization, keeping Google-CloudVertexBot allowed is important: block it and you effectively opt out of being cited on that AI surface.
Tracking which AI crawlers and agents reach your site, and what they do once there, is the foundation of generative engine optimization. See our guides to AI crawlers and robots.txt to control automated access and protect your AI search visibility.
Want to see every AI bot hitting your site? Promptwatch turns your server and CDN logs into a live view of AI crawler and agent traffic, so you can watch ChatGPT, Claude, Perplexity, Gemini, and others crawl your pages and connect those visits to real citations and revenue. Learn more in AI crawler logs.
