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MistralAI-User (Mistral AI): what it is and how to allow or block it

Updated · checked against the operator's documentation on

MistralAI-User is Mistral's fetcher for pages Vibe opens to answer a user. Verify it by Mistral's IP list; its robots.txt tag decides whether to allow or block it. Its robots.txt token is MistralAI-User.

Facts

Operator
Mistral AI
Category
AI user-triggered fetcher
robots.txt token
MistralAI-User
Honors robots.txt?
Yes, per Mistral. Mistral says it uses specific robots.txt tags and that MistralAI-User governs which sites these user requests can be made to.
User-agent example
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; MistralAI-User/1.0; +https://docs.mistral.ai/robots)
Official source
Mistral AI: Mistral crawlers
Published IP ranges
https://mistral.ai/mistralai-user-ips.json
Compared with the source

What it is used for

Per Mistral, MistralAI-User is for user actions in Vibe: when users ask Vibe a question, it may visit a web page to help answer and include a link to the source. Mistral says it is not used for automatic crawling or to crawl content for generative AI training.

Opens one page because a person (or an answer being generated) needs it. The operator may treat robots.txt differently for these requests.

What happens if you block it

Per Mistral, the MistralAI-User tag governs which sites user requests from Vibe can be made to, so a block keeps those requests, and the source links that come with them, off your site.

Is it really MistralAI-User?

Anyone can send MistralAI-User as a user agent, so a log line proves nothing by itself. The way to tell is the requesting IP address.

How to allow or block MistralAI-User

Add one of these groups to the robots.txt at the root of your domain. A group that names the bot overrides a general User-agent: * group.

Allow MistralAI-User
User-agent: MistralAI-User
Allow: /
Block MistralAI-User
User-agent: MistralAI-User
Disallow: /

Does your site allow MistralAI-User today? The checker evaluates your robots.txt for this and every other bot.Check my site

What we see on this site

No request identifying as MistralAI-User has been recorded since 19 Oct, so there is nothing to show yet. We never fill this in with estimates.

Counts come from this site's own server; they hold no IP addresses or URLs, and a user agent is only a claim. See the bot traffic data and the methodology.

Questions about MistralAI-User

What is MistralAI-User?

Mistral's fetcher that opens a web page when a user asks Vibe a question. Per Mistral, MistralAI-User is for user actions in Vibe: when users ask Vibe a question, it may visit a web page to help answer and include a link to the source. Mistral says it is not used for automatic crawling or to crawl content for generative AI training.

Is MistralAI-User safe and legitimate?

The real MistralAI-User is an AI user-triggered fetcher run by Mistral AI. A user-agent string is only a claim, though, so anyone can send it. Compare the requesting IP address with the published IP ranges.

Does MistralAI-User obey robots.txt?

Yes, per Mistral. Mistral says it uses specific robots.txt tags and that MistralAI-User governs which sites these user requests can be made to.

How do I block MistralAI-User?

Add a group to the robots.txt at the root of your domain: User-agent: MistralAI-User followed by Disallow: /. A group that names the bot overrides a general User-agent: * group.

Will blocking MistralAI-User hurt my Google rankings or AI visibility?

It affects only fetches made on request. The operator may treat robots.txt differently for these requests, so a block may not hold. Per Mistral, the MistralAI-User tag governs which sites user requests from Vibe can be made to, so a block keeps those requests, and the source links that come with them, off your site.

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All AI User-Triggered Fetchers · Bot directory · Which bots to allow or block · robots.txt generator · See a page as a bot