ua-tracer by Paul Kinlan

ua-tracer

what does a user agent actually fetch, follow & run?

← all traces

Trace kQxToc0x

First seen: 2026-07-03 04:32:05.182 UTC
User-Agent: TechFeedBot/1.0 (Lambda; content-aggregator)
Bot verification: Not a known bot (no IP-range check applies).

What this user agent did

Directly-referenced assets:

✗ fetched CSS ✗ fetched JS ✗ fetched image ✗ fetched font (HTML)

Document-level link hints:

✗ fetched favicon ✗ fetched apple-touch-icon ✗ fetched web manifest ✗ fetched preload ✗ fetched prefetch

Second-level follows (proves it parsed the linking file):

✗ followed CSS background-image ✗ followed CSS @font-face ✗ followed manifest icon ✗ followed CSS @import

Frames (does it descend into iframes?):

✗ fetched iframe document ✗ descended into iframe (loaded inner image)

Reporting (a report-only CSP is violated by inline styles; reports can arrive via HTTP headers with no JS, or via in-page beacons):

✗ sent a CSP/Reporting report (any path) ✗ delivered via report-uri/Report-To header (no JS) ✗ delivered via in-page beacon (securitypolicyviolation / ReportingObserver)

Social embed (Open Graph / Twitter card images):

✗ fetched og:image ✗ fetched twitter:image

JavaScript execution:

✗ EXECUTED classic JS ✗ EXECUTED ES module ✗ posted client timing

Server-side request waterfall

Every request the server received for this trace, in receive order. +ms is the delta from the homepage request.

ReceivedΔKindMethodUser-Agent
2026-07-03 04:32:05.182 UTC +0 ms homepage GET TechFeedBot/1.0 (Lambda; content-aggregator)
request headers (10) 
{
  "accept": "application/json, application/xml, text/html, */*",
  "accept-encoding": "br, gzip, deflate",
  "accept-language": "*",
  "connection": "keep-alive",
  "host": "uatracer.com",
  "sec-fetch-mode": "cors",
  "traceparent": "00-7e1b7678d6fc8d2b6d484be9d7504511-ffa053b16cf42198-01",
  "tracestate": "",
  "user-agent": "TechFeedBot/1.0 (Lambda; content-aggregator)",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net"
}