Known bots · Meta

What is facebookexternalhit?

Meta’s fetcher for link previews. tidekeeper knows it by its User-Agent.

Run by
Meta
Reads for
Link preview
Known by
“facebookexternalhit” in its User-Agent, and facebookexternalhit in robots.txt
Its addresses
Meta publishes no list, so a read is known by its name alone: anyone can send it.
Its owner’s page
developers.facebook.com/docs/sharing/webmasters/web-crawlers

Keep it out

robots.txt
User-agent: facebookexternalhit
Disallow: /

Or only part of the site: Disallow: /private/ under the same User-agent line.

On tidekeeper.eu

facebookexternalhit read tidekeeper.eu 18 times in the last 30 days, as tidekeeper counts its own site, from its server.

Meta’s other bots

Meta-ExternalAgentAI trainingby its namenot seen here this monthMeta-ExternalFetcherFor someone nowby its namenot seen here this monthMeta-WebIndexerAI searchby its namenot seen here this monthWhatsAppLink previewby its nameread us 1× this month