What is YandexAdditional?
YandexAdditional is a web crawler operated by Yandex that retrieves website content for YandexGPT quick answers in Yandex Search. Agent Analytics can track when it visits your website.
Overview
| Operated By | Yandex |
| Expected To Follow Robots.txt | Yes |
| Insights Last Updated | July 8, 2026 |
Category
Expected Behavior
YandexAdditional works like Googlebot with a less predictable calendar. Expect recurring crawls across your whole site, at a frequency that tracks how often your content changes and how much authority your site carries. Visits can cluster in bursts when its index refreshes.
How To Block YandexAdditional With Robots.txt
Add this rule to your robots.txt file to block YandexAdditional from accessing your entire website, or use Automatic Robots.txt to block all AI search crawlers at once. You can customize which pages are blocked by swapping out / for a different path.
User-agent: YandexAdditional # https://knownagents.com/agents/yandexadditional
Disallow: /YandexAdditional Global Insights
As of July 8, 2026, this data reflects agent visits measured across thousands of websites using Agent Analytics, combined with daily scans of the world's top 1000 websites and their robots.txt files.
Robots.txt Blocked Percentage
Country of Origin
Robots.txt Blocking Trend
0% of top websites block YandexAdditional in their robots.txt files.
Overall AI Search Crawler Traffic
2.7% of all web traffic came from AI search crawlers.
Frequently Asked Questions
Should I Block YandexAdditional?
No, for the same reason you would not block Googlebot. YandexAdditional indexes your site for an AI search engine, and its results link back to you. Blocking it removes you from a whole search channel without helping your traditional rankings. Almost none of the top websites we track have robots.txt rules for YandexAdditional right now.
Does YandexAdditional Respect Robots.txt?
Yes. YandexAdditional is expected to honor robots.txt rules, so a disallow rule is the right first move. Automatic Robots.txt adds and maintains that rule for you, and Agent Analytics confirms YandexAdditional actually honors it.
Does YandexAdditional Access Private Content?
No. YandexAdditional indexes what an anonymous visitor can load, like a traditional search crawler. The bigger risk is content that is public by accident, like a staging site, which it will happily index.
Why Is YandexAdditional Visiting My Website?
YandexAdditional is indexing your site so your pages can appear in its AI search results. It found you through links, your sitemap, or mentions of your domain, and it returns on its own schedule to keep the index fresh.
How Can I Tell if YandexAdditional Is Visiting My Website?
Agent Analytics tracks YandexAdditional visits in real time alongside every other known AI agent, crawler, and scraper. You can also check your server logs for requests whose user agent string contains "YandexAdditional". Look for recurring visits spread across your site, like a search engine crawl. Keep in mind that YandexAdditional doesn't publish a verification method, so any client can claim its user agent string and a log match is a hint rather than proof.