ua-tracer by Paul Kinlan

trace d1bwtbr8

ua-tracer

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

← all traces

Trace d1bwtbr8

First seen: 2026-09-16 06:40:29.799 UTC
User-Agent: Mozilla/5.0 (compatible; ExaSearchBot/1.0; +https://crawler.exa.ai/)
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
2026-09-16 06:40:29.799 UTC +0 ms homepage GET Mozilla/5.0 (compatible; ExaSearchBot/1.0; +https://crawler.exa.ai/)
request headers (15) 
{
  "accept": "text/markdown,text/html;q=0.9,application/xhtml+xml;q=0.8,application/xml;q=0.7,image/webp;q=0.6,*/*;q=0.5",
  "accept-encoding": "gzip, deflate, br",
  "accept-language": "en-US,en;q=0.5",
  "cache-control": "no-cache",
  "host": "uatracer.com",
  "pragma": "no-cache",
  "signature": "sig=:pY4phdB5qHaINZCL4VmkCAZxY2N2ISxfzQ2IQeY+0s3IqQ96ZfwKnpVxc+41P1/+BKG7GHFTDbE5QhSUevI2DA==:",
  "signature-agent": "\"https://crawler.exa.ai\"",
  "signature-input": "sig=(\"@authority\" \"signature-agent\");keyid=\"sDCpsJpgItYcmF_KhZozOUGIGL6a49yxE3f0yQR5SIA\";nonce=\"q4NQyofOSOWMJB+denV/sdrTZOLPk0cVXhzAHxu6SbRxeOKu3RxXVEUhY+caPfXqei6eX0BFv4KRQ1846TbP5g==\";tag=\"web-bot-auth\";alg=\"ed25519\";created=1789540829;expires=1789541129",
  "traceparent": "00-a6d24ee1cdd92b8bd7dbad82fc9af9f0-a1673dc6cc5a5d2a-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (compatible; ExaSearchBot/1.0; +https://crawler.exa.ai/)",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-a6d24ee1cdd92b8bd7dbad82fc9af9f0-764961d2c88208f1-01",
  "x-deno-userspace-tracestate": ""
}