api.kadec0.xyz
| Availability (valid 402 returned) | 100.0% of 160 probes |
| Median 402 handshake | 256ms |
| p90 handshake | 611ms |
| Catalog price (advertised) | $0.01 |
| Live price (median demanded) | $0.01 |
| Price status | match |
| Protocol | x402 v2 |
| Category (our classification) | data-intel |
| Payment receiver | 0x4df6…cDeA · stable since Jul 12 |
| Base USDC inflow to this receiver wallet (30d, all sources — not just x402) | shared receiver wallet — total inflow is not attributable to this domain alone |
| Second vantage | confirmed 402 from a second network path (Cloudflare edge), 8h ago |
| Discovery (.well-known/x402) | present |
| Catalog volume (their metric) | 53 calls/30d |
listed products (catalog path · advertised price · live price we measured)
| /v1/congress-trades | $0.05 | $0.05 (matches) |
| /v1/geocode | $0.01 | $0.01 (matches) |
| /v1/paper-details | $0.03 | $0.03 (matches) |
| /v1/serp | $0.03 | $0.03 (matches) |
| /v1/stackoverflow | $0.01 | $0.01 (matches) |
| /v1/whois-bulk | $0.05 | $0.05 (matches) |
| /v1/yield-pools | $0.03 | $0.03 (matches) |
| /v1/author-search | $0.02 | not yet probed |
| /v1/cve | $0.01 | not yet probed |
| /v1/defi-tvl | $0.02 | not yet probed |
and 26 more listed paths
grade evidence: hourly probes of /v1/hackernews. Availability, latency and protocol measure the operator's shared infrastructure and generalize across its products; the price check applies to the probed product. We now also probe one other product per hour, rotating; "live price we measured" shows what each answered. This operator lists 36 products; the grade is evidence from a small sample of them.
event log (from our catalog snapshots and probes)
| 2026-07-19 17:11 | price changed $0.02 → $0.01 |
| 2026-07-17 22:13 | price changed $0.01 → $0.02 |
| 2026-07-17 11:36 | price changed $0.03 → $0.01 |
| 2026-07-15 23:08 | price changed $0.01 → $0.03 |
Hacker News feed. Top, new, and best front-page stories plus full-text story search — titles, scores, comment counts, and author for tech and startup news.
<a href="https://x402register.com/s/api.kadec0.xyz.html"><img src="https://x402register.com/badge/api.kadec0.xyz.svg" alt="x402 register grade A"></a>
What this grade does and doesn't measure: it scores the paid-request handshake — whether the service returns a spec-valid 402 payment challenge, how fast, and whether its price is honest. We do not pay these endpoints yet, so we do not verify that the paid response returns correct or complete content. Availability is a probe success rate measured hourly, corroborated by a second network path for this service.
Operator of api.kadec0.xyz? Dispute this rating. Scores are opinions based on automated measurements at the stated times.