ua-tracer
by Paul Kinlan
trace Csnfj98h
what does a user agent actually fetch, follow & run?
Trace Csnfj98h
First seen: 2026-06-22 12:06:39.435 UTC
User-Agent: node
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.
| Received | Δ | Kind | Method | User-Agent |
|---|---|---|---|---|
| 2026-06-22 12:06:39.435 UTC | +0 ms | homepage | GET | node |
request headers (14){
"accept": "*/*",
"accept-encoding": "br, gzip, deflate",
"accept-language": "*",
"baggage": "sentry-environment=production,sentry-release=6d3a88854a4c9fb7d9aa895f354c1e4c8664bf64,sentry-public_key=a0b82da8a7990ac8260331c835387270,sentry-trace_id=06e64720992ed92af6488cd330e228bf,sentry-org_id=4510643149668352,sentry-transaction=discover-endpoint%20process,sentry-sampled=true,sentry-sample_rand=0.5796294597828333,sentry-sample_rate=1",
"connection": "keep-alive",
"host": "ua-tracer.paulkinlan-ea.deno.net",
"sec-fetch-mode": "cors",
"sentry-trace": "06e64720992ed92af6488cd330e228bf-565363d306bf0357-1",
"traceparent": "00-9e467f59c9f887eba52c1ffd7c821e39-b5a028b34f7bb5cc-01",
"tracestate": "",
"user-agent": "node",
"via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-9e467f59c9f887eba52c1ffd7c821e39-91092f8d58495d65-01",
"x-deno-userspace-tracestate": ""
}
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