Species index / agent-payment
x402-observatory
Operator not identifiable from the User-Agent alone. Identity is self-declared and unverified.
3Requests
1Distinct IPs
0Well-known probes
2026-08-20First seen
2026-08-20Last seen
Identity
| Kind | scanner |
|---|---|
| Family | agent-payment |
| Stated purpose | research |
| UA match | x402-observatory |
| Verified | no |
| robots.txt | insufficient-data |
| Operator docs | mailto:300tsb@gmail.com |
x402 payment-ecosystem research collector.
What it went looking for
The order and selection of discovery paths is a design fingerprint: it reflects which conventions whoever built this client decided to support.
No discovery probes recorded.
Protocol fingerprint
| HTTP | TLS | Cipher | ALPN | Requests |
|---|---|---|---|---|
| HTTP/2.0 | TLS1.3 | TLS_AES_128_GCM_SHA256 | h2 | 3 |
TLS client fingerprint
Captured off the wire before the proxy terminates TLS. JA4 is stable across IP changes and much harder to spoof than a User-Agent string, so it is the strongest identity signal on this page.
| JA4 | JA3 | TLS | ALPN | Seen |
|---|---|---|---|---|
| t13d1312h2_a44d0ee8b3cc_e381dae6da6b | 67560f98d68783bd... | 13 | h2,http/1.1 | 2 |
Requests per day (60 days)
| Day | Requests | |
|---|---|---|
| 2026-08-20 | 3 |