Google's documentation on AI in Search details the technical checklist for appearing in generated responses

What the updated documentation actually consolidates

On December 10, 2025, Google updated the "AI features and your website" page on Search Central, bringing together in one place the guidance on AI Overviews and AI Mode. This isn't the launch of a new feature: it's Google putting in writing, almost a year after expanding these generated responses, what the real technical requirement is for appearing in them. And the central answer is uncomfortable for anyone expecting a magic formula: there isn't one.

The document is direct on this point. To be eligible as a supporting link in AI Overviews or AI Mode, a page needs to be indexed and eligible to appear in Search with a snippet, meeting Google Search's standard technical requirements. Beyond that, there's no additional requirement. This changes the angle for anyone who was hunting for an "AI schema" that doesn't exist.

How Search decides who gets into the generated response

AI Overviews and AI Mode can use a technique called "query fan-out": the system fires off several related searches across different subtopics and data sources to assemble the response. While it's being generated, Google's models identify additional supporting pages, which broadens the set of links shown compared to a classic search.

The two features don't work the same way. AI Overviews quickly summarizes a complex topic and only appears when the system determines it adds something beyond the classic result, which is why it often simply doesn't trigger. AI Mode is aimed at questions that would require several separate searches, such as comparisons and more open-ended exploration, and tends to bring a broader set of sources.

The fundamentals checklist that Google actually lists

The documentation doesn't create a new list of GEO practices: it reuses, almost item by item, what was already SEO best practice. For anyone working with technical product in Brazil, it's worth checking each point as a verification checklist, not as news:

1. robots.txt allowing Googlebot crawling, including rules applied by CDN or hosting infrastructure.
2. Content discoverable through internal links within the site itself.
3. Good page experience (Core Web Vitals fall under this).
4. Important content available in text form, not only as image or video without a transcript.
5. Quality images and videos supporting the text, when it makes sense.
6. Structured data matching the visible text on the page.
7. Merchant Center and Business Profile kept up to date, for those who depend on these channels.

Structured data: there's no special schema for AI

The documentation's phrasing is specific: "making sure your structured data matches the visible text on the page". It's not an instruction to add a new type of schema.org aimed at generated responses; it's the same principle that already applies to classic rich results. Schema that promises information the text doesn't deliver is the kind of inconsistency Google already penalizes outside the context of AI.

This debunks a common myth in GEO discussions in Brazil: the idea that there would be a specific markup to become "citable" by generative models. What the documentation recommends is consistency between what's marked up and what's visible, clear FAQ, HowTo, or Article structure when applicable, and text that supports the claim made in the schema on its own. Structured data remains a trust signal, not a ranking shortcut.

Controls for those who want to opt out of generated responses

Since AI is embedded in Search's own infrastructure, access control is still robots.txt for Googlebot. To limit what appears in results without blocking crawling entirely, the documentation points to four mechanisms: nosnippet, data-nosnippet, max-snippet, and noindex.

<meta name="robots" content="nosnippet">
<p>Texto normal, visível. <span data-nosnippet>Trecho que não deve virar snippet nem alimentar resumos.</span></p>

To limit the use of content for training and in other Google AI systems (outside of Search), the specific directive is Google-Extended, also in robots.txt. It's worth remembering that changing these directives doesn't take effect immediately: Google recommends using the URL inspection tool to confirm that Googlebot is receiving the rule correctly, and waiting for the next recrawl, which can take from days to months depending on the update frequency the system assigns to the page.

The blind spot: measuring before and after in Search Console

Here's the detail that any Brazilian SEO's agenda needs to face head-on: Search Console doesn't isolate impressions from AI Overviews or AI Mode into their own filter. The documentation states that sites appearing in these features are counted in overall search traffic, reported in the Performance report, under the "Web" search type. In other words, the number that shows up there already mixes classic search with appearances in generated responses.

In practice, this means measuring impact requires comparing "Web" type impressions and clicks before and after a change (for example, a schema adjustment, content restructuring, or a robots.txt fix), without being able to isolate how much came from a generated response. It's a real methodological gap, not a minor detail: anyone promising a separate "AI Overviews impressions" report inside Search Console is promising something that Google's own documentation doesn't deliver.

Google offers a qualitative clue to compensate for this limitation:

We've seen that when people click from search results pages with AI Overviews, these clicks are higher quality (meaning, users are more likely to spend more time on the site).

Official documentation from Google Search Central

This suggests cross-referencing Search Console with Google Analytics, looking at time on page and conversion on pages that are candidates to appear in generated responses, since the click itself can't be isolated by source within Search Console.

What to apply this week

For anyone managing the technical SEO of a product or blog in Brazil, the practical path the documentation suggests, in the order that makes the most operational sense, is this:

1. Confirm indexing and snippet eligibility via URL Inspection on priority pages.
2. Review robots.txt and CDN rules, making sure nothing blocks Googlebot unintentionally.
3. Audit whether the marked-up schema matches exactly with the visible text, removing overly optimistic markup.
4. Update Merchant Center and Business Profile, if the site depends on these channels.
5. Record a baseline of impressions and clicks in the "Web" type of the Performance report before any change, to compare afterward.
6. Deliberately decide on nosnippet, max-snippet, noindex, or Google-Extended for content that shouldn't feed summaries or training, documenting the decision.

None of these steps is exclusive to GEO: they're the same technical SEO fundamentals that already supported appearing in rich results and classic snippets. The difference is that now Google has documented, in writing, that there's no parallel shortcut, just one more place where well-done work shows up.