ua-tracer
by Paul Kinlan
trace sm2Mk40N
what does a user agent actually fetch, follow & run?
Trace sm2Mk40N
First seen: 2026-07-04 08:58:45.820 UTC
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36; compatible; OAI-SearchBot/1.4; +https://openai.com/searchbot
Bot verification: ✓ verified OAI-SearchBot IP checked against published bot CIDR ranges; IP in OAI-SearchBot published range.
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 |
|---|---|---|---|---|
| 2026-07-04 08:58:45.820 UTC | +0 ms | homepage | GET | Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36; compatible; OAI-SearchBot/1.4; +https://openai.com/searchbot |
request headers (9){
"accept": "*/*",
"accept-encoding": "gzip, br, deflate",
"from": "oai-searchbot(at)openai.com",
"host": "uatracer.com",
"traceparent": "00-b4c646cc7036aa25437e0817adec09a1-10bde8dc53388321-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36; compatible; OAI-SearchBot/1.4; +https://openai.com/searchbot",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
"x-openai-host-hash": "383938406"
}
|
||||
| 2026-07-04 08:58:47.840 UTC | +2020 ms | favicon | GET | Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot) |
request headers (12){
"accept": "*/*",
"accept-encoding": "gzip, br, deflate",
"from": "gptbot(at)openai.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-6f19440abbc82df3c737437ce1166352-1f0b98d56bec07a1-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot)",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-6f19440abbc82df3c737437ce1166352-38d7e6b1948b116f-01",
"x-deno-userspace-tracestate": "",
"x-openai-host-hash": "383938406"
}
|
||||
| 2026-07-04 08:58:50.901 UTC | +5081 ms | preload (image) | GET | Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot) |
request headers (12){
"accept": "*/*",
"accept-encoding": "gzip, br, deflate",
"from": "gptbot(at)openai.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-9083a9ebe773cd524be3210a52cf3d04-93a41a11429dfff5-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot)",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-9083a9ebe773cd524be3210a52cf3d04-8f105434203053c5-01",
"x-deno-userspace-tracestate": "",
"x-openai-host-hash": "383938406"
}
|
||||
| 2026-07-04 08:58:51.996 UTC | +6176 ms | apple-touch-icon | GET | Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36; compatible; OAI-SearchBot/1.4; +https://openai.com/searchbot |
request headers (12){
"accept": "*/*",
"accept-encoding": "gzip, br, deflate",
"from": "oai-searchbot(at)openai.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-c0b3dbea79f73bfcb9c1b47eb0062c29-35fce16c1ca4deab-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36; compatible; OAI-SearchBot/1.4; +https://openai.com/searchbot",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-c0b3dbea79f73bfcb9c1b47eb0062c29-93cdebb83b2dbeb5-01",
"x-deno-userspace-tracestate": "",
"x-openai-host-hash": "383938406"
}
|
||||
| 2026-07-04 08:58:53.834 UTC | +8014 ms | ES module | GET | Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot) |
request headers (12){
"accept": "*/*",
"accept-encoding": "gzip, br, deflate",
"from": "gptbot(at)openai.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-697dc58a1d1972c844dfe5ba28e4b574-142cb6ea214c3d6c-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot)",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-697dc58a1d1972c844dfe5ba28e4b574-27fba32fd6825f53-01",
"x-deno-userspace-tracestate": "",
"x-openai-host-hash": "383938406"
}
|
||||
| 2026-07-04 08:58:54.627 UTC | +8807 ms | image | GET | Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36; compatible; OAI-SearchBot/1.4; +https://openai.com/searchbot |
request headers (12){
"accept": "*/*",
"accept-encoding": "gzip, br, deflate",
"from": "oai-searchbot(at)openai.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-456baea4fca2a6ac27f8efb25dc06769-5a7302db8c856330-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36; compatible; OAI-SearchBot/1.4; +https://openai.com/searchbot",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-456baea4fca2a6ac27f8efb25dc06769-c601a9774c8024a6-01",
"x-deno-userspace-tracestate": "",
"x-openai-host-hash": "383938406"
}
|
||||
| 2026-07-04 08:58:56.319 UTC | +10499 ms | font (HTML) | GET | Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot) |
request headers (12){
"accept": "*/*",
"accept-encoding": "gzip, br, deflate",
"from": "gptbot(at)openai.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-1be1a14043eb54b8b97f46899335ed7e-e423f4a75093c299-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot)",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-1be1a14043eb54b8b97f46899335ed7e-955045b38a32632c-01",
"x-deno-userspace-tracestate": "",
"x-openai-host-hash": "383938406"
}
|
||||
| 2026-07-04 08:58:56.947 UTC | +11127 ms | prefetch | GET | Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36; compatible; OAI-SearchBot/1.4; +https://openai.com/searchbot |
request headers (12){
"accept": "*/*",
"accept-encoding": "gzip, br, deflate",
"from": "oai-searchbot(at)openai.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-d4ea19e5a11bf83ced34e3d77bb3ae75-4711629bfbd8d463-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36; compatible; OAI-SearchBot/1.4; +https://openai.com/searchbot",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-d4ea19e5a11bf83ced34e3d77bb3ae75-f182a415d8fe39cb-01",
"x-deno-userspace-tracestate": "",
"x-openai-host-hash": "383938406"
}
|
||||
| 2026-07-04 08:58:58.707 UTC | +12887 ms | apple-touch-icon | GET | Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot) |
request headers (12){
"accept": "*/*",
"accept-encoding": "gzip, br, deflate",
"from": "gptbot(at)openai.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-9ba2956f7e685a2bebc6b2958c5433db-6e45b62e36ae3f41-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot)",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-9ba2956f7e685a2bebc6b2958c5433db-fda72290f3e535d5-01",
"x-deno-userspace-tracestate": "",
"x-openai-host-hash": "383938406"
}
|
||||
| 2026-07-04 08:58:59.028 UTC | +13208 ms | JS | GET | Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36; compatible; OAI-SearchBot/1.4; +https://openai.com/searchbot |
request headers (10){
"accept": "*/*",
"accept-encoding": "gzip, br, deflate",
"from": "oai-searchbot(at)openai.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-f1d094755c2fc2221c2e5a9017e21b98-54c0862440101e78-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36; compatible; OAI-SearchBot/1.4; +https://openai.com/searchbot",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
"x-openai-host-hash": "383938406"
}
|
||||
| 2026-07-04 08:59:00.675 UTC | +14855 ms | image | GET | Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot) |
request headers (12){
"accept": "*/*",
"accept-encoding": "gzip, br, deflate",
"from": "gptbot(at)openai.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-56e641514fcec7209f8a3289494c82bb-a3219038defc4440-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot)",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-56e641514fcec7209f8a3289494c82bb-f96d4b4081e9a772-01",
"x-deno-userspace-tracestate": "",
"x-openai-host-hash": "383938406"
}
|
||||
| 2026-07-04 08:59:00.960 UTC | +15140 ms | CSS | GET | Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36; compatible; OAI-SearchBot/1.4; +https://openai.com/searchbot |
request headers (12){
"accept": "*/*",
"accept-encoding": "gzip, br, deflate",
"from": "oai-searchbot(at)openai.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-f6eadd9cb5da3fe8f67e0b69db531711-0aa68ec4228299da-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36; compatible; OAI-SearchBot/1.4; +https://openai.com/searchbot",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-f6eadd9cb5da3fe8f67e0b69db531711-c4f3ae7ff46d4493-01",
"x-deno-userspace-tracestate": "",
"x-openai-host-hash": "383938406"
}
|
||||
| 2026-07-04 08:59:02.484 UTC | +16664 ms | prefetch | GET | Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot) |
request headers (12){
"accept": "*/*",
"accept-encoding": "gzip, br, deflate",
"from": "gptbot(at)openai.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-9003ec2590b075d4ae21dcd65e88ebb8-31675da5548fae7d-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot)",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-9003ec2590b075d4ae21dcd65e88ebb8-f572e9fbcd213c3a-01",
"x-deno-userspace-tracestate": "",
"x-openai-host-hash": "383938406"
}
|
||||
| 2026-07-04 08:59:02.567 UTC | +16747 ms | favicon | GET | Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36; compatible; OAI-SearchBot/1.4; +https://openai.com/searchbot |
request headers (12){
"accept": "*/*",
"accept-encoding": "gzip, br, deflate",
"from": "oai-searchbot(at)openai.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-e4b9311215cc94b743857c4404a9c8e2-6adfafcf26e1299b-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36; compatible; OAI-SearchBot/1.4; +https://openai.com/searchbot",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-e4b9311215cc94b743857c4404a9c8e2-6e3abdd77fadbf3e-01",
"x-deno-userspace-tracestate": "",
"x-openai-host-hash": "383938406"
}
|
||||
| 2026-07-04 08:59:04.103 UTC | +18283 ms | preload (image) | GET | Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36; compatible; OAI-SearchBot/1.4; +https://openai.com/searchbot |
request headers (12){
"accept": "*/*",
"accept-encoding": "gzip, br, deflate",
"from": "oai-searchbot(at)openai.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-4e4f7ea65b63b71bd67c0cea5bd5ae76-6a0c05fa7b619d2e-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36; compatible; OAI-SearchBot/1.4; +https://openai.com/searchbot",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-4e4f7ea65b63b71bd67c0cea5bd5ae76-8c8121ef5ba886b5-01",
"x-deno-userspace-tracestate": "",
"x-openai-host-hash": "383938406"
}
|
||||
| 2026-07-04 08:59:04.158 UTC | +18338 ms | JS | GET | Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot) |
request headers (12){
"accept": "*/*",
"accept-encoding": "gzip, br, deflate",
"from": "gptbot(at)openai.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-b48b6929e45a00c866fcb2e07e1609d8-1e615003633d5a5b-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot)",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-b48b6929e45a00c866fcb2e07e1609d8-071cf989dee45b06-01",
"x-deno-userspace-tracestate": "",
"x-openai-host-hash": "383938406"
}
|
||||
| 2026-07-04 08:59:05.458 UTC | +19638 ms | web app manifest | GET | Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36; compatible; OAI-SearchBot/1.4; +https://openai.com/searchbot |
request headers (12){
"accept": "*/*",
"accept-encoding": "gzip, br, deflate",
"from": "oai-searchbot(at)openai.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-62147c189e53beb38806fd588295c383-97caa70c6293dcb1-01",
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"user-agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36; compatible; OAI-SearchBot/1.4; +https://openai.com/searchbot",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-62147c189e53beb38806fd588295c383-6cd22f3ba7f80350-01",
"x-deno-userspace-tracestate": "",
"x-openai-host-hash": "383938406"
}
|
||||
| 2026-07-04 08:59:05.718 UTC | +19898 ms | CSS @import (nested stylesheet) | GET | Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot) |
request headers (12){
"accept": "*/*",
"accept-encoding": "gzip, br, deflate",
"from": "gptbot(at)openai.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/r/sm2Mk40N/qFxifzOQ/style.css",
"traceparent": "00-0c87baa84bc4697382d2c08f89f3a6c3-7ce006a018b6f2d3-01",
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"user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot)",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-0c87baa84bc4697382d2c08f89f3a6c3-c44f4ade400db096-01",
"x-deno-userspace-tracestate": "",
"x-openai-host-hash": "383938406"
}
|
||||
| 2026-07-04 08:59:06.720 UTC | +20900 ms | ES module | GET | Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36; compatible; OAI-SearchBot/1.4; +https://openai.com/searchbot |
request headers (12){
"accept": "*/*",
"accept-encoding": "gzip, br, deflate",
"from": "oai-searchbot(at)openai.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-0fd4ce237e4e4409c4601590b6aa9846-49e617e47b4ad3ff-01",
"tracestate": "",
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