ua-tracer by Paul Kinlan

trace YcBDKTk9

ua-tracer

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

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Trace YcBDKTk9

First seen: 2026-10-03 16:33:22.892 UTC
User-Agent: Mozilla/5.0 (compatible; DeepSeekBot/1.0; +https://www.deepseek.com/bot)
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
2026-10-03 16:33:22.892 UTC +0 ms homepage GET Mozilla/5.0 (compatible; DeepSeekBot/1.0; +https://www.deepseek.com/bot)
request headers (8) 
{
  "accept-encoding": "gzip",
  "host": "uatracer.com",
  "traceparent": "00-88fe3aadac8b112b6c77f752779ccead-4bd2d34f8927094b-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (compatible; DeepSeekBot/1.0; +https://www.deepseek.com/bot)",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-88fe3aadac8b112b6c77f752779ccead-1b0d8b2f21bb9504-01",
  "x-deno-userspace-tracestate": ""
}
2026-10-03 16:33:23.241 UTC +349 ms ES module GET Mozilla/5.0 (compatible; Google-CloudVertexBot; +https://cloud.google.com/vertex-ai-bot)
request headers (8) 
{
  "accept-encoding": "gzip",
  "host": "uatracer.com",
  "traceparent": "00-0bf010003e5768df0dd022ac272c9cb2-e818733c9eafd5dd-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (compatible; Google-CloudVertexBot; +https://cloud.google.com/vertex-ai-bot)",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-0bf010003e5768df0dd022ac272c9cb2-4cf9d2f7f54e0258-01",
  "x-deno-userspace-tracestate": ""
}
2026-10-03 16:33:23.243 UTC +351 ms JS GET Mozilla/5.0 (compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
request headers (8) 
{
  "accept-encoding": "gzip",
  "host": "uatracer.com",
  "traceparent": "00-5815153636b6d7c21c5e846411e0b3d8-b32940473474bc5a-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (compatible; ClaudeBot/1.0; +claudebot@anthropic.com)",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-5815153636b6d7c21c5e846411e0b3d8-beb2497a912e6269-01",
  "x-deno-userspace-tracestate": ""
}
2026-10-03 16:33:23.815 UTC +923 ms web app manifest GET CCBot/2.0 (https://commoncrawl.org/faq/)
request headers (6) 
{
  "accept-encoding": "gzip",
  "host": "uatracer.com",
  "traceparent": "00-6ff6a3aba3ef5bc2aa92ac6a685243b7-93dfd989df8f6f81-01",
  "tracestate": "",
  "user-agent": "CCBot/2.0 (https://commoncrawl.org/faq/)",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net"
}