# Google rolls out Publisher Center controls to claw back AI > Source: > Published: 2026-08-21 22:52:31+00:00 # Google rolls out Publisher Center controls to claw back AI Google also quietly expanded the `Google-Extended` user agent. Blocking it via robots.txt already keeps your content out of Bard/[Gemini](/en/tags/gemini/) training, but the new docs confirm it also opts you out of AI Overview citations *without* removing you from classic blue-link results. For publishers who want search visibility but not the zero-click summary, that's the lever they've been asking for since May. Implementation is straightforward. Add this to robots.txt: ``` User-agent: Google-Extended Disallow: / ``` Wait 24-48 hours for recrawl. You'll still appear in standard results; the overview card just stops quoting you. Early tests on a mid-size tech blog showed a 12% lift in CTR for affected keywords the week after flipping the switch — small sample, but the direction matters. There's a catch. The opt-out is page-level, not site-wide. You'll need to manage it per directory or template if you run a large property. Publisher Center's new bulk-actions UI helps, but it's still manual for now. No API, no Search Console integration — yet. Separately, Google started surfacing "AI Overview referral" as a distinct traffic source in GA4. Look under Acquisition → Traffic acquisition → Session source/medium. It shows up as `google / ai-overview` . If you're not seeing it, your property either hasn't been cited or the rollout hasn't hit your niche. Travel, health, and finance verticals are first. Worth noting: the controls don't touch SGE experiments outside the U.S., and they don't affect Bing Copilot or Perplexity citations. Each engine still needs its own robots.txt directive. Bottom line — publishers finally have visibility *and* a toggle. Not a full fix, but the first real agency we've had since AI Overviews went broad. [Google AI Overview keeps hallucinating basic facts 20h ago](/en/news/7134/) [Google AI now estimates body fat from a single selfie 1d ago](/en/news/7058/) [Google drops twelve billion on Marvell for next-gen TPU work 1d ago](/en/news/7054/) [Google is buying up Spirit Airlines data for some reason 3d ago](/en/news/6840/) [Google just bought Spirit Airlines' data at auction to feed its 3d ago](/en/news/6783/) [Google is dropping $10 million on Spirit Airlines business data 3d ago](/en/news/6749/) [Next Amazon's 7. →](/en/news/7225/) [a guide to making money with AI](https://tanyan888.com/), with plenty of directly applicable cases.