AI crawler directory · Google
Google-Extended
Controls Gemini model training and grounding only — explicitly does not impact Google Search inclusion, ranking, or Shopping.
The verdict
Blocking Google-Extended is safe for visibility — it affects model training only, not whether your store appears in answers.
robots.txt
To allow
User-agent: Google-Extended Allow: /
To block
User-agent: Google-Extended Disallow: /
Questions this page answers
What is Google-Extended?
Google-Extended is Google's crawler token. Controls Gemini model training and grounding only — explicitly does not impact Google Search inclusion, ranking, or Shopping. Source: the vendor's own crawler documentation (https://developers.google.com/search/docs/crawling-indexing/google-common-crawlers), last re-verified 2026-08-27.
Does blocking Google-Extended in robots.txt hurt my store's AI visibility?
Blocking Google-Extended is safe for visibility — it affects model training only, not whether your store appears in answers.
Primary source: https://developers.google.com/search/docs/crawling-indexing/google-common-crawlers — every Shelfgrade rule links the vendor doc it derives from, re-verified weekly.
Other Google crawlers: Googlebot · GoogleOther