ua-tracer by Paul Kinlan

ua-tracer

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

← all traces

Trace 8ZWDQV9A

First seen: 2026-06-22 23:10:09.914 UTC
User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)

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
2026-06-22 23:10:09.914 UTC +0 ms homepage GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
request headers (7) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, br, zstd, deflate",
  "host": "ua-tracer.paulkinlan-ea.deno.net",
  "traceparent": "00-74710cff1ff659fb17255af1cce58b85-9daeca9cecff4c0a-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-06-23 01:14:22.309 UTC +7452395 ms ES module GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
request headers (9) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, br, zstd, deflate",
  "host": "ua-tracer.paulkinlan-ea.deno.net",
  "traceparent": "00-22b0631e9166cbc568686813f481bdf4-277690516b2c63db-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-22b0631e9166cbc568686813f481bdf4-d1011db73b8cac87-01",
  "x-deno-userspace-tracestate": ""
}
2026-06-23 01:18:13.303 UTC +7683389 ms iframe document GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
request headers (7) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, br, zstd, deflate",
  "host": "ua-tracer.paulkinlan-ea.deno.net",
  "traceparent": "00-cc84a26960ddd93a24d5e9f42e5db0a4-80cd7fff9966bd75-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-06-23 01:18:47.381 UTC +7717467 ms CSS GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
request headers (7) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, br, zstd, deflate",
  "host": "ua-tracer.paulkinlan-ea.deno.net",
  "traceparent": "00-5734a442a94d541685dad687e3aa0c0e-4f410d8f9484b438-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-06-23 01:24:05.154 UTC +8035240 ms JS GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
request headers (7) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, br, zstd, deflate",
  "host": "ua-tracer.paulkinlan-ea.deno.net",
  "traceparent": "00-59a4d22d9fd8577663c133a508ba23c8-7254608eb1b385a8-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-06-23 01:26:52.811 UTC +8202897 ms font (HTML) GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
request headers (9) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, br, zstd, deflate",
  "host": "ua-tracer.paulkinlan-ea.deno.net",
  "traceparent": "00-f721931a9540fa2f9fbf0410299c240e-ccfb95e8e41647c7-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-f721931a9540fa2f9fbf0410299c240e-8865c49b3e218806-01",
  "x-deno-userspace-tracestate": ""
}
2026-06-23 01:26:53.150 UTC +8203236 ms prefetch GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
request headers (9) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, br, zstd, deflate",
  "host": "ua-tracer.paulkinlan-ea.deno.net",
  "traceparent": "00-f691c2976f87fce728902ec3a85a89a7-ea20049f28bcf07b-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-f691c2976f87fce728902ec3a85a89a7-db5396e516b8e18f-01",
  "x-deno-userspace-tracestate": ""
}
2026-06-23 01:27:42.135 UTC +8252221 ms web app manifest GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
request headers (7) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, br, zstd, deflate",
  "host": "ua-tracer.paulkinlan-ea.deno.net",
  "traceparent": "00-899a41e89b84213bb7cb44612b9842f3-79d2f33c46c761f2-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-06-23 01:28:23.214 UTC +8293300 ms favicon GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
request headers (9) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, br, zstd, deflate",
  "host": "ua-tracer.paulkinlan-ea.deno.net",
  "traceparent": "00-15d56ba816ec7db7b31f86e58873ef9d-c38b91cb3f290118-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-15d56ba816ec7db7b31f86e58873ef9d-2e7ff26e9b36bf7d-01",
  "x-deno-userspace-tracestate": ""
}
2026-06-23 01:28:28.751 UTC +8298837 ms preload (image) GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
request headers (7) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, br, zstd, deflate",
  "host": "ua-tracer.paulkinlan-ea.deno.net",
  "traceparent": "00-64ed3722fd84f63d46aa1add2e440e5b-33420960c2f9f1b0-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-06-23 01:29:08.419 UTC +8338505 ms apple-touch-icon GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
request headers (7) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, br, zstd, deflate",
  "host": "ua-tracer.paulkinlan-ea.deno.net",
  "traceparent": "00-72162355e07a9f508448e825366c1244-4f98920a6c7c7274-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-06-23 01:29:17.790 UTC +8347876 ms image GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
request headers (7) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, br, zstd, deflate",
  "host": "ua-tracer.paulkinlan-ea.deno.net",
  "traceparent": "00-70eddd06cdb10633c122b88fbef0b62e-d32b5599c7e287cb-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-06-23 03:24:46.375 UTC +15276461 ms image inside iframe GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
request headers (7) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, br, zstd, deflate",
  "host": "ua-tracer.paulkinlan-ea.deno.net",
  "traceparent": "00-361a7bb8e750c8069fa3a827bc08d88b-74d98867a910460b-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}