Crawler directory
About this crawler
Baidu crawler associated with Ernie Bot / Yiyan product fetches.
Usually means: This operator is fetching the page for a product workflow — ads, previews, or internal tools — not a live answer and not a training crawl.
User agent
YiyanBot
Trfyx matches these as user-agent tokens, not full browser strings. Providers may add surrounding version or product text.
How Trfyx matches
Matched from the user-agent token
Trfyx reads the request on the server, because these crawlers ask for HTML without running your analytics script.
User agent
Request user-agent contains YiyanBot.
Server fetch
Recorded in middleware, not the browser script.
robots.txt
The published name to allow or disallow.
Sample robots.txt
robots.txt
User-agent: YiyanBot
Disallow: /See when YiyanBot
hits your site
Trfyx records YiyanBot on the server and keeps it out of your human visitor counts.
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