ua-tracer by Paul Kinlan

trace W7uqawj2

ua-tracer

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

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Trace W7uqawj2

First seen: 2026-11-06 06:58:21.118 UTC
User-Agent: Mozilla/5.0 (compatible; Barkrowler/0.9; +https://babbar.tech/crawler)
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
2026-11-06 06:58:21.118 UTC +0 ms homepage GET Mozilla/5.0 (compatible; Barkrowler/0.9; +https://babbar.tech/crawler)
request headers (13) 
{
  "accept": "text/html;q=0.95,text/*;q=0.9,*/*;q=0.8",
  "accept-encoding": "gzip,deflate",
  "connection": "Keep-Alive",
  "from": "abuse@babbar.tech",
  "host": "uatracer.com",
  "if-modified-since": "Sun, 25 Oct 2026 11:25:00 GMT",
  "signature": "sig1=:v9R94RwNVG1Jw4oCKdvzIoC4Gtn8HQ4/fkhumhu4M1BDMFbxMEWu9Gwwr/3L3M75Td++qJpAXFUlleb6RJAaBg==:",
  "signature-agent": "https://ibou.io",
  "signature-input": "sig1=(\"@authority\" \"signature-agent\");created=1793948300;expires=1794034700;nonce=\"d66d9d153ad85a1b\";keyid=\"Dx8uGw1Um6z46pxcPQvlaj2_uLPeBvkeYPzV2Pbhmck\";alg=\"ed25519\";tag=\"web-bot-auth\"",
  "traceparent": "00-10e93567a6cef85e2f6ef0bd53bbed33-3221bbc0b7f7884b-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (compatible; Barkrowler/0.9; +https://babbar.tech/crawler)",
  "via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net"
}