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.
Last verified 2026-09-30 against the operator's documentation. All bots
MistralAI-User at a glance
- Operator
- Mistral AI
- Type
- AI user-triggered fetchers
- 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.
- Operator documentation
- https://docs.mistral.ai/robots
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 3 July 2026 and 28 September 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.
MistralAI-User: common questions
See which bots reach your site, and which of them are who they claim to be.
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.
How do I verify that a request is really MistralAI-User?
Check that the source IP is in the ranges Mistral publishes for MistralAI-User. The user agent alone proves nothing: any client can send it.
How do I block MistralAI-User in robots.txt?
Add a group for User-agent: MistralAI-User with Disallow: /. Mistral documents robots.txt control for its agents. robots.txt only asks. A client that ignores it, or pretends to be MistralAI-User, has to be stopped at your edge.
What happens if I block MistralAI-User?
Mistral's assistant stops fetching your pages for its users.
Related bots
- 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.
- Perplexity-User (Perplexity): Fetches a page when a Perplexity user's request needs it.
- Meta-ExternalFetcher (Meta): Fetches individual links on behalf of Meta product users.