What MistralAI-User does
MistralAI-User is Mistral's user-action agent for Le Chat. It fetches pages needed to answer user questions with current web content and citations.
Should I allow MistralAI-User to crawl my site?
Le Chat is the default assistant for a growing European user base. Allowing MistralAI-User keeps your pages citable in its answers.
How to control MistralAI-User
Target MistralAI-User in your robots.txt with the MistralAI-User token. Rules apply per bot, so you can allow this one while blocking others, or the reverse.
Allow MistralAI-User
User-agent: MistralAI-User
Allow: /Block MistralAI-User
User-agent: MistralAI-User
Disallow: /MistralAI-User FAQ
What is MistralAI-User?
MistralAI-User is the agent Mistral uses for user actions in Vibe: when a user asks Vibe a question, it may visit a web page to help answer and include a link to the source in its response. Mistral states it is not used for crawling the web in any automatic fashion, nor to crawl content for generative AI training.
How do I block MistralAI-User?
Add a robots.txt group with "User-agent: MistralAI-User" and "Disallow: /"; Mistral states this token governs which sites user-initiated requests can be made to. The bot's published IP addresses are available at https://mistral.ai/mistralai-user-ips.json.
About AI Assistant Fetchers
Agents that fetch a page in real time because a user asked an AI assistant about it. They don't build an index; each visit maps to a live conversation.
Blocking these removes your pages from live AI answers at the exact moment a user is asking about you or your category.
