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 |
| Source | Official Website |
| Expected To Follow Robots.txt | Yes |
| Insights Last Updated | August 11, 2026 |
Do you operate this agent? Contact us to suggest an update.
Category
Expected Behavior
YandexAdditional revisits your site on a flexible schedule, often requesting several pages in a burst. Activity usually increases when your content changes or its index refreshes, with quiet intervals between crawl passes.
YandexAdditional's User Agent
| User Agent | YandexAdditional |
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: /Global Statistics for YandexAdditional
As of August 11, 2026, this data reflects agent visits measured across thousands of websites using Agent Analytics, combined with daily scans of the top 1000 websites and their robots.txt files.
Robots.txt Blocked Percentage
Country of Origin
Robots.txt Blocking Trend
2% of top websites block YandexAdditional in their robots.txt files.
Overall AI Search Crawler Traffic
1.9% of all web traffic came from AI search crawlers.
Frequently Asked Questions
Should I Block YandexAdditional?
Usually not. Blocking YandexAdditional keeps your pages out of its AI search results and can eliminate referral traffic from that channel. It does not improve traditional search rankings. For context, 2% of the top websites we track currently have robots.txt rules for YandexAdditional.
Does YandexAdditional Follow Robots.txt Rules?
Yes. YandexAdditional is expected to follow robots.txt directives, so a disallow rule is the appropriate first step. Automatic Robots.txt can add and maintain that rule, while Agent Analytics lets you verify whether YandexAdditional respects it.
Does YandexAdditional Access Private Content?
No special access. YandexAdditional can reach only content available to anonymous visitors. Make sure staging sites and other sensitive areas require authentication.
Why Is YandexAdditional Visiting My Website?
YandexAdditional is updating an AI search index so your pages can appear in its results. It may have discovered your site through links, a sitemap, or mentions of your domain.
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 bursts that follow links across several pages and recur over time. Because YandexAdditional does not publish a verification method, any client can claim its identity and a log match is only a clue.