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AI crawler profile

What is MistralAI-User? How to allow or block Mistral's crawler

User-agent string to match in robots.txt and server logs: MistralAI-User

Operator

Mistral

Purpose

AI search & live answers

robots.txt

Respects robots.txt

Official docs

Mistral documentation ↗

MistralAI-User is Mistral's user-triggered fetcher: when someone asks Le Chat about a URL or a question needing live web content, this agent retrieves the page for citation. Like other user-fetch agents, traffic from it represents real people reaching your content through an AI conversation.

Does MistralAI-User respect robots.txt?

Mistral documents the agent and states it respects robots.txt directives.

Verify it's really MistralAI-User

Mistral publishes no IP-range file for MistralAI-User, so it can only be identified by its user-agent string — which anything can send. Treat traffic claiming this agent as unverified, and prefer a reverse-DNS check where the operator documents one before acting on it.

Block MistralAI-User with robots.txt

robots.txt — block
User-agent: MistralAI-User
Disallow: /

Explicitly allow MistralAI-User

robots.txt — allow
User-agent: MistralAI-User
Allow: /

Block MistralAI-User at the server or CDN

robots.txt is the right first step for MistralAI-User, since Mistral honors it. Use these only if you want the block enforced rather than requested — for example to stop agents spoofing the user agent. Matching on the user-agent string still trusts a self-declared header — and no IP-range file exists for this agent, so treat it as best-effort.

nginx
if ($http_user_agent ~* "MistralAI-User") {
    return 403;
}
apache — .htaccess
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} MistralAI-User [NC]
RewriteRule .* - [F,L]
cloudflare — WAF expression
(http.user_agent contains "MistralAI-User")

Find MistralAI-User in your server logs

shell
grep -i "MistralAI-User" /var/log/nginx/access.log | wc -l

Should you block MistralAI-User?

For most sites, no. MistralAI-User powers visibility: blocking it removes your pages from the cited answers Mistral's assistant shows its users — the AI-era equivalent of de-indexing yourself from a search engine. Block it only if you deliberately don't want that audience. Our guide on blocking AI bots covers the trade-offs in detail.

Check and monitor MistralAI-User on your site

Related reading

Frequently asked questions

What is MistralAI-User?

MistralAI-User is Mistral's agent for AI search and live answers. Fetches pages when a Le Chat user's question requires them.

Does MistralAI-User respect robots.txt?

Mistral documents the agent and states it respects robots.txt directives.

How do I block MistralAI-User?

Add "User-agent: MistralAI-User" followed by "Disallow: /" to your robots.txt file. The change takes effect the next time the bot fetches your robots.txt.

Does blocking MistralAI-User hurt my Google rankings?

No. MistralAI-User is separate from Googlebot, which handles Google Search indexing. Blocking MistralAI-User has no effect on your traditional search rankings, but it does remove your pages from the AI answers Mistral's assistant serves to its users.

How can I tell if MistralAI-User is crawling my site?

Search your server access logs for the string "MistralAI-User" — for example: grep -i "MistralAI-User" /var/log/nginx/access.log | wc -l. Our free AI Bot Log Analyzer does this in your browser: paste a log file and it counts hits per AI crawler, including MistralAI-User, with per-path breakdowns.

How do I use MistralAI-User?

You don't — MistralAI-User isn't a tool you run. It's Mistral's own crawler, operated by Mistral, that visits your site from their infrastructure. The only control you have over it is whether you allow or block it, via robots.txt or a server rule. If you're looking to crawl other sites yourself, you'd write your own crawler or use a crawling library; sending "MistralAI-User" as your user agent would be impersonating Mistral.

Where is the official Mistral documentation for MistralAI-User?

Mistral publishes it at https://docs.mistral.ai/robots/. That page is the authoritative source for the user-agent string and Mistral's stated crawling policy.

Part of our directory of every known AI crawler, refreshed monthly. Last verified: 2026-08-14.