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GoogleLive fetcher

Google-GeminiNotebook

Google-GeminiNotebook is a Google fetcher that reads a URL because someone added it as a source inside Gemini or NotebookLM.

Reads a page when someone asks Gemini about it.

Get the robots.txt ruleGoogle documentation
Is Google-GeminiNotebook allowed on your site?4 Google bots

Reads your live robots.txt and applies the same rules these crawlers use. Nothing is stored.

robots.txt token
Google-GeminiNotebook
Follows robots.txt
Not always
How to verify it
Published IP ranges
Seen on
Not measured
Last checked
11 August 2026

Should you block Google-GeminiNotebook?

Usually not. It reads a page only when a person asks Gemini about it, so blocking it hides your page from someone already looking for it.

What blocking each Google bot does
Google botJobIf you block it
Google-ExtendedControl tokenDisallowing it limits future Gemini training and grounding uses covered by the token. Google says it does not affect Search inclusion or ranking.
GooglebotSearchBlocking Googlebot can remove pages from Google Search and eligibility for Google AI features that depend on Search indexing.
Google-AgentUser fetchBlocking it can prevent a Google agent from retrieving a page while completing a user-directed task. It is separate from Google Search crawling.
Google-GeminiNotebookThis pageUser fetchA hit usually means a person added your page as a source, not that Google is crawling your site broadly.
Google-CloudVertexBotOtherA hit usually relates to a configured Vertex AI workflow rather than broad public search crawling.
GoogleOtherOtherBlocking it may affect Google product-specific crawling but is separate from primary Search indexing policy.
GoogleOther-ImageOtherBlocking it can limit image-oriented Google product crawls without targeting regular Googlebot directly.
GoogleOther-VideoOtherBlocking it can limit video-oriented Google product crawls without targeting regular Googlebot directly.

From Google’s documentationGoogle says user-triggered fetchers generally ignore robots.txt, because a person asked for the page.

About robots.txtThis is the current name for the fetcher previously documented as Google-NotebookLM. Google states user-triggered fetchers ignore robots.txt.

robots.txt
User-agent: Google-GeminiNotebook
Disallow: /

Asks Google-GeminiNotebook not to crawl any page. Other Google bots are unaffected. Add it to the robots.txt file at the root of your site, above any wider rules.

Ignored robots.txt?

Also seen under Google’s name, but not in its current documentation: GoogleAgent-Mariner, Gemini-Deep-Research, Google-NotebookLM, Google-Gemini-CLI, Google-Firebase. Rules naming them control no documented Google crawler.

Spot it in your logs.

Match the name, then check where the request came from. Anyone can copy a user-agent.

Desktop fetchersource
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko) Chrome/W.X.Y.Z Safari/537.36; compatible; Google-GeminiNotebook

Version numbers change. Match the highlighted name, not the whole string.

Mobile fetchersource
Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/W.X.Y.Z Mobile Safari/537.36; compatible; Google-GeminiNotebook

Version numbers change. Match the highlighted name, not the whole string.

  1. 1

    Match the name

    Search your server or CDN log for Google-GeminiNotebook, case-insensitive. A match is a clue, not proof.

  2. 2

    Check the published IP ranges

    Compare the request’s source with the list Google publishes. Anything outside it is not Google. developers.google.com/static/crawling/ipranges/user-triggered-fetchers.json

Is this really Google-GeminiNotebook?

Addresses and reverse DNS

Paste an address that claims to be Google-GeminiNotebook. It is checked against Google’s published list and its reverse DNS. Nothing is stored.

Check any crawler’s address

Serve the content in HTML

The cited operator material does not verify JavaScript rendering. Serve useful HTML before client-side JavaScript where possible.

Questions, answered.

Google-GeminiNotebook is a Google fetcher that reads a URL because someone added it as a source inside Gemini or NotebookLM.

Sources.

Officially documented. Operator facts and Trakkr’s measurements keep separate dates.

  1. [1]
    Google crawler documentation

    Officially documented · checked 11 August 2026

    developers.google.com/crawling/docs/crawlers-fetchers/google-gemininotebook

First verified 11 August 2026. Last source check 11 August 2026.

Changes

Google documented Google-GeminiNotebookGoogle lists Google-GeminiNotebook as the current fetcher and Google-NotebookLM as the former name supported until August 2026.
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