AI agents · Training crawler

Meta-ExternalAgent

Meta-ExternalAgent is Meta's training crawler: it collects content to train AI models.

Operator
Meta
User agent
meta-externalagent
Verified by
User agent only

What Meta-ExternalAgent does

A training crawler collects pages to train its operator's AI models. Its visits answer no one's question in the moment: what it reads goes into the data the models learn from.

How to recognize it

Meta-ExternalAgent names itself in its user agent with the token meta-externalagent. That's what Ethogram matches, as a whole word in any case.

A user agent is only a claim, though: anyone can send meta-externalagent. Scrapers borrow well-known names to get past rules meant for the real agent, so before you trust a visit, or block one, check where it came from.

How to tell it's really Meta-ExternalAgent

Meta publishes no IP ranges, hostnames or signing keys for Meta-ExternalAgent that Ethogram knows of, so there's nothing to check a visit against. Ethogram counts its visits as unverified: they may well be real, but the user agent is all there is.

Ethogram runs these checks on every request and gives each visit a verdict: verified, unverified or spoofed. Spoofed visits are counted apart and never added to Meta-ExternalAgent's numbers. How verdicts work.

Allow or block Meta-ExternalAgent in robots.txt

robots.txt groups its rules by user-agent token. To ask Meta-ExternalAgent to stay off your whole site, add this group:

robots.txt
# Keep meta-externalagent out of the whole siteUser-agent: meta-externalagentDisallow: /

To let it read everything, name it with an allow rule. A group that names meta-externalagent replaces the User-agent: * group for it, so it follows only these rules:

robots.txt
# Let meta-externalagent read the whole siteUser-agent: meta-externalagentAllow: /

robots.txt is a request, not a lock: it's up to Meta-ExternalAgent to read it and follow it. Ethogram reads your robots.txt every day and shows whether Meta-ExternalAgent respects it, with the disallowed paths it asked for. To actually keep it out, use your firewall or bot protection, and check the visit's verdict first so you block impostors, not the real Meta-ExternalAgent.

See what Meta-ExternalAgent does on your site

Most analytics filter Meta-ExternalAgent out as a bot. Ethogram records it on your server, where every request lands, with no script to load, and shows:

  • Every visit from Meta-ExternalAgent, with a verdict on whether it's really Meta-ExternalAgent.
  • Each visit step by step: the pages it read, what it searched for, and where it was blocked, looped or hit an error.
  • Whether it respects your robots.txt, with the disallowed paths it asked for.
  • How much of your bandwidth it takes, next to its share of requests.
  • New versions of its user agent as they appear, and what changed in its behavior with each.
  • A heads-up when its visits spike or stop, or when it starts getting blocked.
A Meta-ExternalAgent visit in EthogramSample data
  1. +0sRead robots.txt /robots.txt200
  2. +1sRead sitemap.xml /sitemap.xml200
  3. +3sViewed page /products/trail-jacket200
  4. +5sViewed page /collections/new200
  5. +6sViewed page /collections/hiking200
  6. +10sViewed page /collections/jackets200

7 more steps. Browsed and left. Nothing went wrong.

Open in the demo