ua-tracer
what does a user agent actually fetch, follow & run?
All recent homepage requests, newest first. This page does not mint a new trace (unlike /), so you can browse the log without adding noise.
Recent homepage requests
Filter by user agent and the matching requests appear right below. Showing requests whose user agent contains meta-externalagent/1.1 (+https://developers.facebook.com/docs/sharing/webmasters/crawler).
| Timestamp | User Agent | Assets |
|---|---|---|
| 2026-06-25 17:01:20.824 UTC | meta-externalagent/1.1 (+https://developers.facebook.com/docs/sharing/webmasters/crawler) | 0 |
no JS— | ||
By user agent
Running counts across the last 200 homepage requests (96 distinct agents). Click one to set the filter above.
Unsolicited / well-known requests
Paths a user agent fetched on its own that ua-tracer never links to: robots.txt, sitemap.xml,
/.well-known/*, llms.txt, the root favicon, and similar. Reveals what an agent probes
on its own initiative.
Filtered to user agent meta-externalagent/1.1 (+https://developers.facebook.com/docs/sharing/webmasters/crawler).
clear filters
By path
Each unsolicited path with its request count and how many distinct user agents hit it. Click a path to see the individual requests; click a user agent below to reverse-look-up everything that UA did.
No unsolicited paths fetched yet.
Requests (0 shown)
The Related trace column links a probe to a homepage trace from the same
user agent and IP within 30 minutes (the same crawler that fetched a well-known file usually also
loaded /). The offset shows how long before/after the probe that trace was minted.
No unsolicited probe requests match the current filter.