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What is MistralAI-User?

MistralAI-User is the agent Mistral AI uses to fetch a page when a user's action in its assistant needs it. Mistral says it is not used for automatic crawling or to train its models.

Operator
Mistral AI
Purpose
Fetches a page when a Mistral user's action needs it.
robots.txt token
MistralAI-User
Example user agent
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; MistralAI-User/1.0; +https://docs.mistral.ai/robots)
How to verify
Check that the source IP is in the ranges Mistral publishes for MistralAI-User.
IP ranges
https://mistral.ai/mistralai-user-ips.json
Operator documentation
https://docs.mistral.ai/robots
Last verified

How often is MistralAI-User impersonated?

Our verification data for MistralAI-User was incomplete during the measurement window, so a share would overstate impersonation. We show none until it is complete.

This directory measures requests between 14 July 2026 and 10 October 2026. The fake crawler report covers its own, earlier window (late June to 21 September 2026), so its figures differ from the ones here. Read it for the method.

Have a request that claims to be MistralAI-User? Check its IP address.

Should you block MistralAI-User?

Allow it if
you want the assistant to be able to read and cite your pages when someone asks about them.
Block it if
you do not want Mistral's assistant fetching your pages.
What blocking changes
Mistral's assistant stops fetching your pages for its users.

To block it, add this group to your robots.txt. Mistral documents robots.txt control for its agents.

User-agent: MistralAI-User
Disallow: /

robots.txt only asks. It does nothing against a client that ignores it or only pretends to be MistralAI-User. Stopping those takes verification at your edge.

Related bots

  • MistralAI-Index (Mistral AI): Indexes pages for Mistral search.
  • ChatGPT-User (OpenAI): Visits a page when a ChatGPT or Custom GPT user's request needs it.
  • Claude-User (Anthropic): Fetches a page when a Claude user's question needs it.
  • Meta-ExternalFetcher (Meta): Fetches individual links on behalf of Meta product users.
  • Perplexity-User (Perplexity): Fetches a page when a Perplexity user's request needs it.

See which bots reach your site, and which of them are who they claim to be.

Request a site audit