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MetaSocial crawler

FacebookBot

FacebookBot is a Meta crawler historically documented for Facebook crawling and AI-related training uses. This record has no current Meta source, so treat a matching request as unverified.

Not tied to answers in an AI assistant.

Is FacebookBot allowed on your site?4 Meta bots

Reads your live robots.txt and applies the same rules these crawlers use. Nothing is stored.

robots.txt token
FacebookBot
Follows robots.txt
Yes, documented
How to verify it
Not published
Seen on
Not measured
Last checked
11 June 2026

Should you block FacebookBot?

There is little to gain. Meta does not document FacebookBot, so a rule naming it controls none of its documented crawlers. Write rules for Meta-ExternalAgent, Meta-WebIndexer, Meta-ExternalFetcher, facebookexternalhit and meta-externalads instead.

What blocking each Meta bot does
Meta botJobIf you block it
Meta-ExternalAgentTrainingBlocking it opts your site out of this direct Meta AI crawling path, but does not cover every Meta user-triggered fetcher.
Meta-WebIndexerSearchAllowing it can help Meta AI cite and link to your content; blocking it can reduce Meta AI search visibility.
Meta-ExternalFetcherUser fetchA hit usually represents an on-demand fetch for a specific URL rather than broad crawling.
FacebookBotThis pageOtherBlocking it can reduce Meta crawler access, but may overlap with Facebook sharing and product behavior.
facebookexternalhitOtherBlocking it can break rich link previews and Open Graph extraction in Meta surfaces.
meta-externaladsOtherBlocking it limits Meta’s crawling for those advertising and business uses. Meta documents separate crawlers for link previews, AI, and user-requested fetches.
robots.txt
User-agent: FacebookBot
Disallow: /

Asks FacebookBot not to crawl any page. Other Meta bots are unaffected. Add it to the robots.txt file at the root of your site, above any wider rules.

Ignored robots.txt?

Allowing FacebookBot creates the possibility of retrieval. To find out whether Meta AI actually cites or recommends you, track your Meta AI mentions over time.

Spot it in your logs.

Match the name, then check where the request came from. Anyone can copy a user-agent.

Reported user-agentsource
FacebookBot

This string comes from a public crawler registry or observed naming, not current operator documentation.

  1. 1

    Match the name

    Search your server or CDN log for FacebookBot, case-insensitive. A match is a clue, not proof.

  2. 2

    Check the source

    Meta publishes no IP ranges, reverse DNS or signatures for FacebookBot in the sources here, so it cannot be verified. Treat matches as unconfirmed.

Serve the content in HTML

The cited operator material does not verify JavaScript rendering. Serve useful HTML before client-side JavaScript where possible.

Questions, answered.

FacebookBot is a Meta crawler historically documented for Facebook crawling and AI-related training uses. This record has no current Meta source, so treat a matching request as unverified.

Sources.

Reported, not operator verified. Operator facts and Trakkr’s measurements keep separate dates.

  1. [1]
    Reported crawler reference

    Reported, not operator verified · checked 11 June 2026

    developers.facebook.com/docs/sharing/webmasters/web-crawlers/

Last source check 11 June 2026.

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