A grade
ok
100 score
1242 ms
100.0% uptime over 5 measured probes
AS13335 CLOUDFLARENET - Cloudflare, Inc., US · US
https://cors-header-checker.underscoredone.com/check
x402 first seen 2026-09-07 · last seen 2026-09-11 · json
Listed in
| source | name | description | external id |
|---|---|---|---|
| x402 Bazaar (Coinbase CDP discovery) | https://cors-header-checker.underscoredone.com/check | https://cors-header-checker.underscoredone.com/check |
Same host
a2a × 1 agents-txt × 1 ard × 1 llms-txt × 1 robots × 1 · 1 alive sigdir × 1
Badge
embed:
<a href="https://agentprobe.org/endpoint/21868"><img src="https://agentprobe.org/badge/21868.svg" alt="agentprobe"></a>
Probe history
| probed (UTC) | outcome | score | status | http | ms | version | capabilities | error |
|---|---|---|---|---|---|---|---|---|
| 2026-09-11 11:28 | ok | 100 | 402 | HTTP/1.1 | 1242 | detailscapabilities {"payment_header":true,"content_type":"application/json","accepts":0}meta {"final_url":"https://cors-header-checker.underscoredone.com/check","http_version":"HTTP/1.1","vantage":"us-east-1"} | HTTP 402 | |
| 2026-09-10 10:25 | ok | 100 | 402 | HTTP/1.1 | 1159 | detailscapabilities {"payment_header":true,"content_type":"application/json","accepts":0}meta {"final_url":"https://cors-header-checker.underscoredone.com/check","http_version":"HTTP/1.1","vantage":"us-east-1"} | HTTP 402 | |
| 2026-09-09 09:55 | ok | 100 | 402 | 1024 | detailscapabilities {"payment_header":true,"content_type":"application/json","accepts":0}meta {"final_url":"https://cors-header-checker.underscoredone.com/check","vantage":"us-east-1"} | HTTP 402 | ||
| 2026-09-08 08:53 | ok | 100 | 402 | 3529 | detailscapabilities {"payment_header":true,"content_type":"application/json","accepts":0}meta {"final_url":"https://cors-header-checker.underscoredone.com/check","vantage":"us-east-1"} | |||
| 2026-09-07 02:51 | ok | 100 | 402 | 87 | detailscapabilities {"payment_header":true,"content_type":"application/json","accepts":0}meta {"final_url":"https://cors-header-checker.underscoredone.com/check"} |