Checks / AI crawler access
robots.txt keeps Google-Extended out of your home page and most of the site
Google-Extended collects training data and may read only the paths robots.txt allows for it. This is a choice: most of your pages stay out of future model training, not out of AI search.
robots_partial_google_extended · AI crawler access · Notice
What triggers it
robots.txt does not let Google-Extended fetch your home page, but leaves some other paths open for it; the finding names the first three.
What to change
Remove the Disallow: / rule for Google-Extended in robots.txt, or add Allow rules for the other paths you want read.
Example
Lines that allow Google-Extended in robots.txt:
User-agent: Google-Extended
Allow: /How to confirm the fix
- Open https://example.com/robots.txt: the group that names Google-Extended (or the * group, if none does) leaves most of the site open, the home page included
- Run a new crawl: the AI crawler table no longer reports Google-Extended as mostly blocked
About Google-Extended
Google-Extended is a robots.txt product token that lets publishers manage whether content Google crawls may be used to train future Gemini models. It has no HTTP user agent of its own, so it never shows in your logs. Google says it does not affect inclusion in Search or ranking.
The crawler that actually fetches your pages for Search.
There is nothing to verify at the network layer: no user agent, no address list. Check the robots.txt itself, on every host, and remember that a log search for Google-Extended finds nothing whether you block it or not. Google's own example group shows the token taking an allow path and a disallow path like any other.
Job: Control token (no requests of its own). Follows robots.txt: Read from robots.txt only; there is no separate user agent.
Google-Extended: operator, user-agent string and address list
How common it is
We have not measured how common this is on a sample of sites. Counts appear here when a study covers it.
About this check
| Check ID | robots_partial_google_extended |
|---|---|
| Report section | AI crawler access |
| Severity | Notice |
| How it is decided | Measured: read directly from the page or the server's response. |
| Added | Before 19 Oct 2026 (versions 1 and 2), or a site-wide check with no version date yet |
| Status | Measured in every report |
| Report gives the code | Yes, one block for the site |
Settings by platform
For robots.txt, where the setting lives differs by platform. Our guides cover 13 of them: AI crawler settings by platform.
Related checks
- robots.txt keeps CCBot out of your home page and most of the site
- robots.txt keeps ClaudeBot out of your home page and most of the site
- robots.txt keeps GPTBot out of your home page and most of the site
- Your firewall or CDN refuses AI training crawlers
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