ua-tracer by Paul Kinlan

trace iraKQuWS

ua-tracer

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

← all traces

Trace iraKQuWS

First seen: 2026-07-03 23:07:02.979 UTC
User-Agent: HackerNews/1569 CFNetwork/3860.600.12 Darwin/25.5.0
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 23:07:02.979 UTC +0 ms homepage GET HackerNews/1569 CFNetwork/3860.600.12 Darwin/25.5.0
request headers (9) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate, br",
  "accept-language": "en-US,en;q=0.9",
  "host": "uatracer.com",
  "priority": "u=3",
  "traceparent": "00-5ad5f0b3b3cbef33df6212d487e8357a-793e710e905e3566-01",
  "tracestate": "",
  "user-agent": "HackerNews/1569 CFNetwork/3860.600.12 Darwin/25.5.0",
  "via": "HTTP/2 ams.vultr.prod.deno-cluster.net"
}
2026-07-03 23:07:05.310 UTC +2331 ms Open Graph image GET HackerNews/1569 CFNetwork/3860.600.12 Darwin/25.5.0
request headers (12) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate, br",
  "accept-language": "en-US,en;q=0.9",
  "cookie": "ua-tracer-trace=iraKQuWS",
  "host": "uatracer.com",
  "priority": "u=3",
  "traceparent": "00-372b3c5ea42746586e0ce67649e7bd68-02868c04fb22a426-01",
  "tracestate": "",
  "user-agent": "HackerNews/1569 CFNetwork/3860.600.12 Darwin/25.5.0",
  "via": "HTTP/2 ams.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-372b3c5ea42746586e0ce67649e7bd68-d181e2b93113a373-01",
  "x-deno-userspace-tracestate": ""
}