What is MistralAI-User?
It visits a page when a user asks Mistral's Vibe assistant a question, to help answer it and link to the source. Mistral says it is not used for automatic crawling or AI training.
Fetches a page because a person asked an assistant about it, right now. Operators often say robots.txt does not apply to these user-triggered fetches.
MistralAI-User user agent
Mistral AI documents this user agent for MistralAI-User. Version numbers in it change over time, so match on the name, not the whole string.
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; MistralAI-User/1.0; +https://docs.mistral.ai/robots)Should you block MistralAI-User?
Usually allow it. Each fetch is a person asking about your page right now, which is close to a visit. Blocking it in robots.txt may not stop it, since operators often treat these fetches as the person’s own.
How to block MistralAI-User in robots.txt
Add a group for its token to robots.txt at the root of your site.
A bot follows only the group that names it, so it ignores your User-agent: * rules once it has a group of its own. Repeat any paths you also want kept from it there.
User-agent: MistralAI-User
Disallow: /How to verify a request is really MistralAI-User
Anyone can send any user agent, so the string alone proves nothing.
Mistral AI publishes the IP ranges MistralAI-User crawls from. A request that claims to be MistralAI-User from any other address is not MistralAI-User.
See when MistralAI-User reads your site
Bots don’t run JavaScript analytics, so a script tag never sees them. invisit records crawler reads on the server instead, through its server SDK or a Cloudflare Worker, and shows which bots read which pages, next to your visitors.
Checked against Mistral AI’s own documentation on . Something changed? Write to help@invisit.dev.