D grade
protocol-mismatch
10 score
2158 ms
0.0% uptime over 2 measured probes
AS16509 AMAZON-02 - Amazon.com, Inc., US · US
https://www.upgradeagent.ai/
agents-txt first seen 2026-09-07 · last seen 2026-09-09 · json
Same host
a2a × 1 ard × 1 · 1 alive llms-txt × 1 · 1 alive mcp × 1 · 1 alive robots × 1 · 1 alive sigdir × 1 x402 × 1 · 1 alive
Badge
embed:
<a href="https://agentprobe.org/endpoint/3654200"><img src="https://agentprobe.org/badge/3654200.svg" alt="agentprobe"></a>
Probe history
| probed (UTC) | outcome | score | status | http | ms | version | capabilities | error |
|---|---|---|---|---|---|---|---|---|
| 2026-09-09 10:21 | protocol-mismatch | 10 | 200 | HTTP/1.1 | 2158 | detailsmeta {"url":"https://www.upgradeagent.ai/login?from=%2Fagents.txt","http_version":"HTTP/1.1","vantage":"us-east-1"} | ||
| 2026-09-07 10:51 | connect-fail | 221 | detailsmeta {"vantage":"us-east-1"} | WriteError: |