ua-tracer
by Paul Kinlan
trace wxoXbE5S
what does a user agent actually fetch, follow & run?
Trace wxoXbE5S
First seen: 2026-10-08 13:55:19.995 UTC
User-Agent: https://bonfire.cafe - Bonfire federation
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 |
|---|---|---|---|---|
| 2026-10-08 13:55:19.995 UTC | +0 ms | homepage | GET | https://bonfire.cafe - Bonfire federation |
request headers (11){
"accept": "application/activity+json",
"content-length": "0",
"date": "Thu, 08 Oct 2026 13:55:19 GMT",
"host": "uatracer.com",
"signature": "keyId=\"https://bonfire.cafe/pub/actors/Federation_Bot#main-key\",algorithm=\"rsa-sha256\",headers=\"(request-target) date host\",signature=\"u6KPKTUQJmStagfv6yOSWzXCwul34/0wLJ3kCWb26NJzYEnEQzGB+PRnW2ygVdwGu1bT5EVVO83x1/mFddlcwH6oK9u/Y/W7WKQf1Q+B8e/ugC49gSqmd+yMHTWNtoG1Evzdjq5fwxsBuq+00zlj7SYlbfEeMq4UD02IYpn6W5Bbs9oaVQFRciHyYM2kmF9ayHCTzzKl6di3dN2JWnVAAClCK3dopmjiK/Fe42o76p0QQ2j0ffpcNNDMSBBvY76sErI150mGctFsIZdWDI47LC1MHYFwC3QfNy/H11aGReM9H00ECdWqfMAvDszUvVYOKuv7fFOZm0+x5qKBA+pTFw==\"",
"traceparent": "00-d327e98f173020b7903199e683bf9ab0-278f2a6cd2d681c6-01",
"tracestate": "",
"user-agent": "https://bonfire.cafe - Bonfire federation",
"via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-d327e98f173020b7903199e683bf9ab0-011ba6e9279d070f-01",
"x-deno-userspace-tracestate": ""
}
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| 2026-10-08 13:55:22.837 UTC | +2842 ms | favicon | HEAD | Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:47.0) Gecko/20100101 Firefox/47.0 |
request headers (7){
"host": "uatracer.com",
"traceparent": "00-5d77e8bbff389c779a6f5f99d8f54d32-0a338b4657eab880-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:47.0) Gecko/20100101 Firefox/47.0",
"via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-5d77e8bbff389c779a6f5f99d8f54d32-3e6782badbaf61e7-01",
"x-deno-userspace-tracestate": ""
}
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