Google-Extended blocked — should you allow it?

Google-Extended is a separate user agent from Googlebot. It is used for Google's generative AI and model-training crawls, not for classic blue-link search indexing. Blocking Google-Extended does not stop normal Google Search crawling, but it can limit how Google's AI products use your content. Allow it if you want broader Gemini-related access; block it if your policy restricts AI training crawls while keeping Googlebot allowed.

Many sites copy a blanket `Disallow: /` for Google-Extended without separating it from Googlebot. That is valid for policy reasons, but measure the trade-off: you may reduce AI-surface visibility while keeping traditional SEO intact. Document the decision and align robots.txt with your legal and marketing stance.