Meta
meta-externalfetcher
About this crawler
Meta fetcher used when a person requests or shares a specific URL.
Usually means: A person asked an AI assistant a question, and the assistant fetched this URL to answer with fresh context or citations.
User agent
meta-externalfetcherDataFast matches these as user-agent tokens, not full browser strings. Providers may add surrounding version or product text.
IP verification
User-agent only match
DataFast can identify this crawler from its user-agent token, but no official IP range source is wired for this crawler yet. Treat it as useful signal, not the same confidence as IP-verified traffic.
User agent
Request user agent contains meta-externalfetcher.
Request IP
The request IP may still be stored with the crawl event.
Range check
No published range source is configured for this crawler.
Discover when bots and AI assistants crawl your website.
Install the server-side tracker to see which AI assistants, search engines, and training crawlers request your pages. It helps you understand what bots are trying to find, including pages that return 404.