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Add 2 meta user-agents to bad user agents list#656

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melroy89 wants to merge 2 commits intomitchellkrogza:masterfrom
melroy89:patch-2
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Add 2 meta user-agents to bad user agents list#656
melroy89 wants to merge 2 commits intomitchellkrogza:masterfrom
melroy89:patch-2

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@melroy89 melroy89 commented Apr 9, 2026

  • Adding meta-externalagent to the bad user list, see also: https://developers.facebook.com/docs/sharing/webmasters/web-crawlers
  • Also add meta-webindexer: "The Meta-WebIndexer crawler navigates the web to improve Meta AI search result quality for users. In doing so, Meta analyzes online content to enhance the relevance and accuracy of Meta AI."
  • Despite this name, its an AI crawler bot: "supports product functions such as evaluating and improving agentic AI capabilities—including helping AI navigate websites to complete tasks for users."

Meta AI crawler bot is relentless and is hamming my domain since 19:00PM yesterday (300-400 requests per min. for hours):

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@melroy89 melroy89 changed the title Add 'meta-externalagent' to bad user agents list Add 2 meta user-agents to bad user agents list Apr 9, 2026
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melroy89 commented Apr 9, 2026

Ow.. and it is not just me: https://www.reddit.com/r/webdev/comments/1sdzd1q/metas_ai_crawler_scraped_my_site_79_million_times/

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