MU
MistralAI-User
Mistral AI web crawler bot for content indexing
About this crawler
MistralAI-User is a web crawler identified by the regular-expression pattern MistralAI-User in the User-Agent request header. It is categorised as ai-fetcher. Use the regex above to detect, log, allow, or block MistralAI-User traffic in your web server, CDN edge rules, or robots.txt.
Block-rate · top 25k sites
1.3%
Technical details
- Name
- MistralAI-User
- Pattern
MistralAI-User- Tags
- ai-fetcher
- Added
- 2026/04/07
- rDNS suffixes
.mistral.ai- Instances
- 1 known sample(s)
rDNS verification (FCrDNS)
Verify a request is genuinely MistralAI-User with forward-confirmed reverse DNS: the client IP's PTR record must end in one of the suffixes below and a forward A/AAAA lookup of that hostname must return the same IP. UA strings alone are spoofable; FCrDNS is not.
.mistral.ai
Sample User-Agent strings
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; MistralAI-User/1.0; +https://docs.mistral.ai/robots)
Block this crawler
robots.txt — disallow MistralAI-User:
User-agent: MistralAI-User
Disallow: /
Apache .htaccess — return 403:
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} MistralAI-User [NC]
RewriteRule .* - [F,L]
Nginx — return 403 inside a server block:
if ($http_user_agent ~* "MistralAI-User") {
return 403;
}
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