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Kagi Assistant

Operated by Kagi

Quick Facts

User-Agent:kagi-fetcher
Category:AI & LLM Bots
Operator:Kagi
Safety:Safe
Blocking Impact:Low — No SEO ranking impact
SEO Impact Score:2/10

What is Kagi Assistant?

Kagi Assistant is an on-demand AI fetcher operated by Kagi. 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 Kagi's assistant.

Kagi Assistant is an on-demand AI fetcher operated by Kagi. 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 Kagi's assistant. Kagi Assistant uses the user-agent token kagi-fetcher. 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 Kagi Assistant?

✅ **No SEO Impact** — Blocking Kagi Assistant does not affect your rankings in Google, Bing, or any other search engine. Kagi Assistant is an AI crawler, not a traditional search indexer. You can freely block it via User-agent / Disallow: / without any SEO penalty.
Generally safe to allow; provides legitimate crawling value.

How to block Kagi Assistant with robots.txt

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

Block completely (robots.txt)
User-agent: kagi-fetcher Disallow: /
Allow all (robots.txt)
User-agent: kagi-fetcher Allow: /
Block private only (robots.txt)
User-agent: kagi-fetcher Disallow: /private/ Disallow: /api/ Disallow: /admin/ Allow: /
Nginx server block
# Nginx: Hard-block Kagi Assistant if ($http_user_agent ~* "kagi-fetcher") { return 403 "Bot blocked"; }
Apache .htaccess
# Apache: Hard-block Kagi Assistant SetEnvIfNoCase User-Agent "kagi-fetcher" 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 Kagi Assistant safe to allow?

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

What does Kagi Assistant do?

Understanding Kagi Assistant's purpose helps you decide whether to allow or block it.

Frequently Asked Questions

What is the official user-agent string for Kagi Assistant?
The official user-agent string for Kagi Assistant is: kagi-fetcher. 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 Kagi Assistant by performing a reverse-DNS lookup on the source IP.
Is Kagi Assistant safe?
Yes, Kagi Assistant is a **safe and legitimate** crawler operated by Kagi. It follows the Robots Exclusion Protocol (RFC 9309) and can be controlled with standard robots.txt rules.
Will blocking Kagi Assistant hurt my SEO?
✅ **No SEO Impact** — Blocking Kagi Assistant does not affect your rankings in Google, Bing, or any other search engine. Kagi Assistant is an AI crawler, not a traditional search indexer. You can freely block it via User-agent / Disallow: / without any SEO penalty.
How do I block Kagi Assistant in robots.txt?
Add the following lines to your /robots.txt file: 
User-agent: kagi-fetcher
Disallow: /
This instructs Kagi Assistant not to crawl any path on your site. To block only specific sections, replace / with the path (e.g., Disallow: /blog/).
Does Kagi Assistant respect robots.txt?
Kagi Assistant is operated by Kagi 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 Kagi Assistant is crawling my site?
Search your web server access logs for the string kagi-fetcher (case-insensitive: grep -i "kagi-fetcher" /var/log/nginx/access.log). Filter by user-agent in your log analytics tool (GoAccess, AWStats, etc.).

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