D grade
protocol-mismatch
60 score
413 ms
0.0% uptime over 6 measured probes
AS14061 DIGITALOCEAN-ASN - DigitalOcean, LLC, US · US
https://underground.substratesymposium.com/
x402 first seen 2026-09-07 · last seen 2026-09-07 · json
Listed in
| source | name | description | external id |
|---|---|---|---|
| agent-tools.cloud | substratesymposium.com | underground-substratesymposium-com-pg-b48ece45 | |
| agent-tools.cloud | substratesymposium.com | underground-substratesymposium-com-pg-846d4aa4 |
Same host
a2a × 1 agents-txt × 1 ard × 1 llms-txt × 1 · 1 alive robots × 1 · 1 alive sigdir × 1 x402 × 4 · 4 alive
Badge
embed:
<a href="https://agentprobe.org/endpoint/4339"><img src="https://agentprobe.org/badge/4339.svg" alt="agentprobe"></a>
Probe history
| probed (UTC) | outcome | score | status | http | ms | version | capabilities | error |
|---|---|---|---|---|---|---|---|---|
| 2026-09-12 15:02 | protocol-mismatch | 60 | 200 | HTTP/1.1 | 413 | detailsmeta {"final_url":"https://underground.substratesymposium.com/","http_version":"HTTP/1.1","vantage":"us-east-1"} | no 402 — resource is open or x402 not enforced | |
| 2026-09-11 15:01 | protocol-mismatch | 60 | 200 | HTTP/1.1 | 331 | detailsmeta {"final_url":"https://underground.substratesymposium.com/","http_version":"HTTP/1.1","vantage":"us-east-1"} | no 402 — resource is open or x402 not enforced | |
| 2026-09-10 14:02 | protocol-mismatch | 60 | 200 | HTTP/1.1 | 367 | detailsmeta {"final_url":"https://underground.substratesymposium.com/","http_version":"HTTP/1.1","vantage":"us-east-1"} | no 402 — resource is open or x402 not enforced | |
| 2026-09-09 13:16 | protocol-mismatch | 60 | 200 | HTTP/1.1 | 291 | detailsmeta {"final_url":"https://underground.substratesymposium.com/","http_version":"HTTP/1.1","vantage":"us-east-1"} | no 402 — resource is open or x402 not enforced | |
| 2026-09-08 12:43 | protocol-mismatch | 60 | 200 | 463 | detailsmeta {"final_url":"https://underground.substratesymposium.com/","vantage":"us-east-1"} | no 402 — resource is open or x402 not enforced | ||
| 2026-09-07 10:42 | protocol-mismatch | 60 | 200 | 556 | detailsmeta {"final_url":"https://underground.substratesymposium.com/","vantage":"us-east-1"} | no 402 — resource is open or x402 not enforced |