ua-tracer by Paul Kinlan

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 Twitterbot/1.0.

clear
TimestampUser AgentAssets
2026-06-29 12:13:18.943 UTC
Twitterbot/1.0
7
no JSog-imgtwitter-img
2026-06-22 12:09:10.643 UTC
Twitterbot/1.0
0
no JS
2026-06-22 12:02:38.573 UTC
Twitterbot/1.0
8
no JSog-imgtwitter-img
2026-06-22 12:02:00.855 UTC
Twitterbot/1.0
0
no JS
2026-06-22 12:02:00.845 UTC
Twitterbot/1.0
0
no JS

By user agent

Running counts across all 1220 homepage requests (2 distinct agents). Click one to set the filter above.

User AgentRequestsJS ran
Twitterbot/1.0 5 0
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_1) AppleWebKit/601.2.4 (K… 2 0

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 Twitterbot/1.0. 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.

PathRequestsDistinct UAs
/robots.txt 6 1

Requests (6 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.

TimestampPathUser Agent (click for reverse lookup)Related trace
2026-06-29 12:13:18.767 UTC /robots.txt Twitterbot/1.0
2026-06-29 12:13:18.699 UTC /robots.txt Twitterbot/1.0 lQDBY7K1 (+244ms)
2026-06-29 12:13:18.687 UTC /robots.txt Twitterbot/1.0
2026-06-29 12:13:18.435 UTC /robots.txt Twitterbot/1.0
2026-06-29 12:13:18.433 UTC /robots.txt Twitterbot/1.0
2026-06-29 12:13:18.419 UTC /robots.txt Twitterbot/1.0

← back to the live tracer (mints a new trace)