01 · Operator
Who operates FemtosearchBot
- Company
- Femtosearch
- Official docs
- femtosearch.com
02 · Behavior
What FemtosearchBot does
It discovers and indexes new and updated web pages for Femtosearch. Femtosearch says it rate-limits requests and respects robots.txt.
03 · Impact
Why FemtosearchBot matters for your site
If you allow it
- Indexes your site for a new search engine
- Rate-limited and respects robots.txt
If you block it
- Search engine is still under development
- Cannot be verified by IP or DNS
04 · Allow
How to allow FemtosearchBot
robots.txt
User-agent: FemtosearchBot
Allow: /Cloudflare
# Security › WAF › Custom rules › Create rule
Expression: (http.user_agent contains "FemtosearchBot")
Action: Skip › All Super Bot Fight Mode rules
# Also check Security › Bots: "Block AI bots" can block it regardless of robots.txt.WordPress
# WordPress serves a virtual robots.txt. Edit it with your SEO plugin:
# Yoast: SEO › Tools › File editor · Rank Math: General Settings › Edit robots.txt
User-agent: FemtosearchBot
Allow: /nginx
# nginx serves every user agent by default.
# Make sure no rule like this blocks it:
# if ($http_user_agent ~* "FemtosearchBot") { return 403; }Apache
# Apache serves every user agent by default.
# Make sure .htaccess has no rule like this:
# RewriteCond %{HTTP_USER_AGENT} FemtosearchBot [NC]
# RewriteRule .* - [F,L]05 · Block
How to block FemtosearchBot
FemtosearchBot follows robots.txt, so one rule is enough. Use a server or CDN rule only to stop spoofed copies.
robots.txt
User-agent: FemtosearchBot
Disallow: /Cloudflare
# Security › WAF › Custom rules › Create rule
Expression: (http.user_agent contains "FemtosearchBot")
Action: BlockWordPress
# WordPress serves a virtual robots.txt. Edit it with your SEO plugin:
# Yoast: SEO › Tools › File editor · Rank Math: General Settings › Edit robots.txt
User-agent: FemtosearchBot
Disallow: /nginx
# In your server { } block:
if ($http_user_agent ~* "FemtosearchBot") {
return 403;
}Apache
# .htaccess
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} FemtosearchBot [NC]
RewriteRule .* - [F,L]
</IfModule>06 · User agents
User agents we see for FemtosearchBot
The user agent published by the operator:
Mozilla/5.0 (compatible; FemtosearchBot/1.0; http://femtosearch.com)07 · Verification
Is it really FemtosearchBot?
FemtosearchBot’s operator publishes no IP ranges or hostnames, so requests cannot be verified. Treat the user agent as a claim, and watch your logs for unusual request rates.
FAQ
Questions about FemtosearchBot
What is FemtosearchBot?
It is the web crawler of Femtosearch, a privacy-focused search engine in development.
Does FemtosearchBot respect robots.txt?
Yes. Femtosearch states that its crawler respects robots.txt and rate-limits requests.
How do I block FemtosearchBot?
Add a robots.txt group for User-agent: FemtosearchBot with Disallow: /.
Last reviewed Oct 7, 2026