Safe Official docs Search Engines

Yandex Calendar

Operated by Yandex

Quick Facts

User-Agent:
YandexCalendar
Category:
Search Engines
Operator:
Yandex
Safety:
Safe
Blocking Impact:
Low - No SEO ranking impact
SEO Impact Score:
2/10
Official docs:
yandex.com

Confirmed by the operator

Yandex names YandexCalendar on its own documentation page, linked above. The token, purpose and robots.txt behaviour on this profile come from that page, re-checked on September 22, 2026.

What is Yandex Calendar?

Yandex Calendar is an on-demand AI fetcher operated by Yandex. It retrieves a page only when a user explicitly asks an AI assistant or agent to read, summarize, or act on a specific URL. Because it is triggered by real user intent rather than bulk crawling, blocking it mainly prevents users from pulling your content into Yandex's assistant.

Yandex Calendar is an on-demand AI fetcher operated by Yandex. It retrieves a page only when a user explicitly asks an AI assistant or agent to read, summarize, or act on a specific URL. Because it is triggered by real user intent rather than bulk crawling, blocking it mainly prevents users from pulling your content into Yandex's assistant.
Yandex Calendar uses the user-agent token YandexCalendar. You can control it via robots.txt, meta tags (noai), or the emerging llms.txt standard. Robots.txt is voluntary; for hard enforcement, combine it with server-level IP blocking.

What happens if you block Yandex Calendar?

🔶 AI Visibility Trade-off - Blocking Yandex Calendar will not hurt Google or Bing rankings, but it can remove your content from AI search answers and assistant citations powered by this crawler. Block only if you have a deliberate reason.
Generally safe to allow; provides legitimate crawling value.

How to block Yandex Calendar with robots.txt

<code>User-agent: YandexCalendar</code> - Matching is case-insensitive. Robots.txt is fetched from the root of each subdomain separately.

Block completely (robots.txt)
User-agent: YandexCalendar Disallow: /
Allow all (robots.txt)
User-agent: YandexCalendar Allow: /
Block private only (robots.txt)
User-agent: YandexCalendar Disallow: /private/ Disallow: /api/ Disallow: /admin/ Allow: /
Nginx server block
# Nginx: Hard-block Yandex Calendar if ($http_user_agent ~* "YandexCalendar") { return 403 "Bot blocked"; }
Apache .htaccess
# Apache: Hard-block Yandex Calendar SetEnvIfNoCase User-Agent "YandexCalendar" bad_bot Order Allow,Deny Allow from all Deny from env=bad_bot
Meta robots tag
<meta name="robots" content="noindex, nofollow">
X-Robots-Tag header
X-Robots-Tag: noindex, nofollow

Is Yandex Calendar safe to allow?

Yes, Yandex Calendar is a safe and legitimate crawler operated by Yandex. It follows the Robots Exclusion Protocol (RFC 9309) and can be controlled with standard robots.txt rules.
Verify by reverse-DNS lookup: legitimate Yandex Calendar requests resolve to Yandex's domain.

What does Yandex Calendar do?

Understanding Yandex Calendar's purpose helps you decide whether to allow or block it.

  • Fetches a page only when a user asks an AI assistant to read it
  • Summarizes or extracts the URL the user provided
  • Triggered by real user intent, not bulk crawling
  • Low traffic volume compared with training crawlers
  • Blocking it prevents users from pulling your content into the assistant

Frequently Asked Questions

What is the official user-agent string for Yandex Calendar?
The official user-agent string for Yandex Calendar is: YandexCalendar. Use this exact string in robots.txt, Nginx, Apache, or Cloudflare firewall rules to target this bot. Matching in robots.txt is case-insensitive. Verify a request genuinely comes from Yandex Calendar by performing a reverse-DNS lookup on the source IP.
Is Yandex Calendar safe?
Yes, Yandex Calendar is a safe and legitimate crawler operated by Yandex. It follows the Robots Exclusion Protocol (RFC 9309) and can be controlled with standard robots.txt rules.
Will blocking Yandex Calendar hurt my SEO?
🔶 AI Visibility Trade-off - Blocking Yandex Calendar will not hurt Google or Bing rankings, but it can remove your content from AI search answers and assistant citations powered by this crawler. Block only if you have a deliberate reason.
How do I block Yandex Calendar in robots.txt?
Add the following lines to your /robots.txt file:
User-agent: YandexCalendar
Disallow: /

This instructs Yandex Calendar not to crawl any path on your site. To block only specific sections, replace / with the path (e.g., Disallow: /blog/).
Does Yandex Calendar respect robots.txt?
Yandex Calendar is operated by Yandex and is expected to fetch and parse /robots.txt before crawling, following RFC 9309. For hard enforcement, combine robots.txt with server-level IP or user-agent blocking.
How do I verify if Yandex Calendar is crawling my site?
Search your web server access logs for the string YandexCalendar (case-insensitive: grep -i "YandexCalendar" /var/log/nginx/access.log). Filter by user-agent in your log analytics tool (GoAccess, AWStats, etc.).

Related Bots