ua-tracer
by Paul Kinlan
trace 838vu02X
what does a user agent actually fetch, follow & run?
Trace 838vu02X
First seen: 2026-07-14 13:23:11.498 UTC
User-Agent: AIWebIndex/2.0 (+https://lyrenth.com/bot; AI-readable web index)
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 |
|---|---|---|---|---|
| 2026-07-14 13:23:11.498 UTC | +0 ms | homepage | GET | AIWebIndex/2.0 (+https://lyrenth.com/bot; AI-readable web index) |
request headers (11){
"accept": "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8",
"accept-encoding": "gzip",
"accept-language": "en-US,en;q=0.5",
"host": "uatracer.com",
"signature": "sig1=:K1o1JBWF1wijGFaywsK4FfYTArKepcxdkEINoZq2AMW0UJoh/uwRTxpMw8doN+EgO2uuSs90f6MlyhbfpWQyCQ==:",
"signature-agent": "\"https://api.lyrenth.com\"",
"signature-input": "sig1=(\"@authority\" \"signature-agent\");created=1784035391;expires=1784035691;keyid=\"SD20yP9LKRt4lF1_WimW-6eKjT3u6f2FR8ip0r_V-Ko\";alg=\"ed25519\";nonce=\"i84x0pxEDQeHFPoFGSfV3A==\";tag=\"web-bot-auth\"",
"traceparent": "00-e925ea570511efcf295d6dc37c651155-97509e029afe6291-01",
"tracestate": "",
"user-agent": "AIWebIndex/2.0 (+https://lyrenth.com/bot; AI-readable web index)",
"via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net"
}
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