D grade
card-invalid
20 score
502 ms
0.0% uptime over 7 measured probes
AS16509 AMAZON-02 - Amazon.com, Inc., US · US
https://a2a.sntl.site/.well-known/agent-card.json
a2a first seen 2026-09-07 · last seen 2026-09-12 · json
Listed in
| source | name | description | external id |
|---|---|---|---|
| Agenstry | SNTL Helium Intelligence | paid_api:a2a.sntl.site |
Same host
agents-txt × 1 · 1 alive ard × 1 llms-txt × 1 mcp × 1 robots × 1 · 1 alive sigdir × 1 x402 × 1
Badge
embed:
<a href="https://agentprobe.org/endpoint/4902"><img src="https://agentprobe.org/badge/4902.svg" alt="agentprobe"></a>
Probe history
| probed (UTC) | outcome | score | status | http | ms | version | capabilities | error |
|---|---|---|---|---|---|---|---|---|
| 2026-09-12 13:05 | card-invalid | 20 | 200 | HTTP/1.1 | 502 | detailsmeta {"card_url":"https://a2a.sntl.site/.well-known/agent-card.json","http_version":"HTTP/1.1","vantage":"us-east-1"} | card is not a JSON object | |
| 2026-09-11 12:11 | card-invalid | 20 | 200 | HTTP/1.1 | 857 | detailsmeta {"card_url":"https://a2a.sntl.site/.well-known/agent-card.json","http_version":"HTTP/1.1","vantage":"us-east-1"} | card is not a JSON object | |
| 2026-09-10 11:11 | card-invalid | 20 | 200 | HTTP/1.1 | 860 | detailsmeta {"card_url":"https://a2a.sntl.site/.well-known/agent-card.json","http_version":"HTTP/1.1","vantage":"us-east-1"} | card is not a JSON object | |
| 2026-09-09 10:06 | card-invalid | 20 | 200 | 207 | detailsmeta {"card_url":"https://a2a.sntl.site/.well-known/agent-card.json","vantage":"us-east-1"} | card is not a JSON object | ||
| 2026-09-09 09:14 | connect-fail | 3168 | detailsmeta {"vantage":"us-east-1"} | LocalProtocolError: Invalid input ConnectionInputs.SEND_HEADERS in state ConnectionState.CLOSED | ||||
| 2026-09-08 08:12 | connect-fail | 915 | detailsmeta {"vantage":"us-east-1"} | WriteError: | ||||
| 2026-09-07 00:05 | card-invalid | 20 | 200 | 238 | detailsmeta {"card_url":"https://a2a.sntl.site/.well-known/agent-card.json"} | card is not a JSON object |