ua-tracer by Paul Kinlan

trace cX9ktj2C

ua-tracer

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

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Trace cX9ktj2C

First seen: 2026-08-31 09:51:47.796 UTC
User-Agent: Twitterbot/1.0
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
2026-08-31 09:51:47.796 UTC +0 ms homepage GET Twitterbot/1.0
request headers (15) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate",
  "finagle-ctx-com.twitter.finagle.retries": "0",
  "host": "uatracer.com",
  "traceparent": "00-1438f4f919bf786e7642ce10104347f6-909280f8530ba5e5-01",
  "tracestate": "",
  "user-agent": "Twitterbot/1.0",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-b3-flags": "17167166818",
  "x-b3-parentspanid": "d5c558b7ee078d79",
  "x-b3-sampled": "false",
  "x-b3-spanid": "eebb35f968021efd",
  "x-b3-traceid": "29134affccf9318e",
  "x-deno-userspace-traceparent": "00-1438f4f919bf786e7642ce10104347f6-c0641fc51d6b6ddd-01",
  "x-deno-userspace-tracestate": ""
}
2026-08-31 09:51:49.647 UTC +1851 ms Open Graph image GET Twitterbot/1.0
request headers (15) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate",
  "finagle-ctx-com.twitter.finagle.retries": "0",
  "host": "uatracer.com",
  "traceparent": "00-be0f542723ce59c1e418003ecbcc9008-0637f80fae8e91bd-01",
  "tracestate": "",
  "user-agent": "Twitterbot/1.0",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-b3-flags": "17167166818",
  "x-b3-parentspanid": "73d77a9ed18fc20c",
  "x-b3-sampled": "false",
  "x-b3-spanid": "29f4e366891b0f3c",
  "x-b3-traceid": "29134affccf9318e",
  "x-deno-userspace-traceparent": "00-be0f542723ce59c1e418003ecbcc9008-fb632094455eece3-01",
  "x-deno-userspace-tracestate": ""
}
2026-08-31 09:51:49.651 UTC +1855 ms Twitter card image GET Twitterbot/1.0
request headers (13) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate",
  "finagle-ctx-com.twitter.finagle.retries": "0",
  "host": "uatracer.com",
  "traceparent": "00-3c3ae767c871aa03952bafb7071ef6bb-53b60193b5a7f3a0-01",
  "tracestate": "",
  "user-agent": "Twitterbot/1.0",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-b3-flags": "17167166818",
  "x-b3-parentspanid": "54566e74fcd1b3e4",
  "x-b3-sampled": "false",
  "x-b3-spanid": "c50f88e342cbbdbc",
  "x-b3-traceid": "29134affccf9318e"
}
2026-09-13 05:17:58.980 UTC +1106771184 ms Open Graph image GET Twitterbot/1.0
request headers (15) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate",
  "finagle-ctx-com.twitter.finagle.retries": "0",
  "host": "uatracer.com",
  "traceparent": "00-82ed53c560b2d7787fcdfc3c82f91579-3f2b8e8968ff588a-01",
  "tracestate": "",
  "user-agent": "Twitterbot/1.0",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-b3-flags": "17146314754",
  "x-b3-parentspanid": "c9d8af3808a240b9",
  "x-b3-sampled": "false",
  "x-b3-spanid": "36b375acb2ccf766",
  "x-b3-traceid": "000000000000000087f2401ef1036c89",
  "x-deno-userspace-traceparent": "00-82ed53c560b2d7787fcdfc3c82f91579-fbda605a25c22a2b-01",
  "x-deno-userspace-tracestate": ""
}
2026-09-13 05:17:59.060 UTC +1106771264 ms Twitter card image GET Twitterbot/1.0
request headers (15) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate",
  "finagle-ctx-com.twitter.finagle.retries": "0",
  "host": "uatracer.com",
  "traceparent": "00-b8025e12028d9cb9a5ea0dfadee854ec-0989fefae16af333-01",
  "tracestate": "",
  "user-agent": "Twitterbot/1.0",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-b3-flags": "17146314754",
  "x-b3-parentspanid": "37d25d5f91efc48b",
  "x-b3-sampled": "false",
  "x-b3-spanid": "877327d453d8a5b1",
  "x-b3-traceid": "000000000000000087f2401ef1036c89",
  "x-deno-userspace-traceparent": "00-b8025e12028d9cb9a5ea0dfadee854ec-87cf18a3c62ce4ed-01",
  "x-deno-userspace-tracestate": ""
}