What is Meta-ExternalFetcher?
Meta-ExternalFetcher is listed as a ai search crawler. Use this crawler profile to identify user-agent tokens, operator signals, platform hints, and recommended handling.
Meta-ExternalFetcher
AI search crawler
- Version
- 1.1
- First seen
- Sep 17, 2025
- Confidence
- Known user-agent token
Crawler tags
Directory facts
- AI model training
- Not listed as training
- Acts on behalf of user
- Yes, user-triggered
- Obeys directives
- No, do not rely on robots.txt alone
What is Meta-ExternalFetcher?
Meta-ExternalFetcher is listed as a ai search crawler. Meta-ExternalFetcher is likely used to discover, crawl, and index public web pages.
Meta-ExternalFetcher matched a known crawler token in the user-agent string, but this page alone does not prove IP ownership.
How to identify Meta-ExternalFetcher in logs
Search server logs for Meta-ExternalFetcher. Matching those tokens is useful for discovery, but IP verification is still recommended before trusting the identity.
meta-externalfetcher/1.1 (+https://developers.facebook.com/docs/sharing/webmasters/crawler)
Use this as a web-crawler lookup reference for identifying how this user-agent presents itself in server logs. After you identify crawler traffic, run the WebMCP Compatibility Checker to confirm whether AI crawlers and agents can understand your site.
User-agent signals
- Product tokens
- meta-externalfetcher/1.1
- Contact
- None found
- Platform
- Unknown · Unknown
- Browser profile
- Unknown · Unknown
- Browser-like UA
- No
- HTTP library
- Unknown
- Spoof risk
- Medium
Questions answered by this crawler profile
What is Meta-ExternalFetcher?
Meta-ExternalFetcher is listed as a ai search crawler. Meta-ExternalFetcher is likely used to discover, crawl, and index public web pages.
Does Meta-ExternalFetcher train AI models?
Meta-ExternalFetcher is not listed as being used to train AI or LLM systems.
Is Meta-ExternalFetcher user-triggered?
Meta-ExternalFetcher is listed as being triggered by a real user action.
How do I identify Meta-ExternalFetcher in logs?
Search server logs for Meta-ExternalFetcher. Matching those tokens is useful for discovery, but IP verification is still recommended before trusting the identity.
Does Meta-ExternalFetcher respect robots.txt?
This directory entry lists the crawler as not obeying robots.txt directives. Use server-side access controls, firewall rules, or rate limits when policy enforcement matters.