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MistralAI-Index

MistralAI-Index crawls and indexes web content for Mistral's search feature in Le Chat. Content it indexes is not used to train Mistral's generative models.
Mistral AIMistralAI-Index
AI AssistantSearch Engine Crawler

What is MistralAI-Index?

MistralAI-Index is Mistral AI's automated web indexer for the search feature in Le Chat. It gathers pages ahead of a user's question so Mistral search can retrieve web material when producing an answer. This is the persistent indexing identity in Mistral's crawler family.

Its request pattern is different from MistralAI-User. Index requests are part of an automated crawl rather than a one-off visit made for a live user action. A site can therefore see the bot discover and revisit pages even when no Le Chat user has just requested those exact URLs.

Allowing the crawler gives public pages a route into Mistral's search index. That can make them available to search-backed Le Chat answers, but a fetch is not a guarantee that a page will be selected or shown. Blocking it removes this crawler's indexing access.

Mistral states that content collected by MistralAI-Index is not used to train its generative models. The separate MistralAI-Training identity is the control for training collection. A rule against Index changes search indexing, not the site's training preference.

Mistral publishes MistralAI-Index as a robots.txt tag and this bot marks compliance as true. Its full documented user agent is Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; MistralAI-Index/1.0; +https://docs.mistral.ai/robots). Site-wide or path-specific directives can be aimed at that stable token.

Promptwatch tracks this bot and marks its IPs as verified, so observed requests can be checked against Mistral's published identity information as well as the user agent. The facts record contains no Cloudflare directory entry or Web Bot Auth URL for MistralAI-Index. Use Mistral's crawler documentation as the operator reference.

Relevant for AI searchMistral AI

Is MistralAI-Index relevant for AI search?

Yes. MistralAI-Index feeds Mistral AI, so the pages it can reach shape what those AI products say about you.

MistralAI-Index crawls and indexes pages so the AI search or assistant behind it can retrieve them at answer time. A page it has never fetched cannot be quoted, summarized, or linked in that product's answers, so most sites keep it allowed to stay citable. Blocking it removes your pages from that AI surface and hands those citations to competitors.

Track MistralAI-Index with Promptwatch

Promptwatch classifies MistralAI-Index (MistralAI-Index) in real time from your server and CDN logs. See exactly when it visits, which pages it requests, the status codes it gets, and how those crawls map to AI citations. Requests are validated against the operator's published IP ranges to filter out spoofed user agents.

How to handle MistralAI-Index

Keep MistralAI-Index allowed on public pages that you want Mistral search to retrieve. Use path-level directives for staging areas, private sections, duplicate parameter routes, or anything else that should stay out of the index.

To stop indexing across the site, publish:

User-agent: MistralAI-Index
Disallow: /

Mistral documents this token for robots.txt and the catalog marks it as respecting those directives. Do not use this rule as a model-training opt-out. That purpose belongs to the separate MistralAI-Training token. Confirm deployment by checking both the full user agent and Mistral's published IP information in your logs.

Examples

  • A newsroom allows MistralAI-Index on article pages so Mistral search can retrieve its reporting, while its subscriber settings remain disallowed.
  • A documentation team removes a crawl trap from internal links and waits for a later Index visit before assessing whether the revised page is discoverable.
  • An analyst separates MistralAI-Index traffic from MistralAI-User requests because one builds the search corpus and the other fetches for a live question.

Frequently asked questions about MistralAI-Index

Learn about AI visibility monitoring and how Promptwatch helps your brand succeed in AI search.

It builds the web index used by Mistral's search feature in Le Chat. Mistral can use that index when answering questions with web information.

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