X402/REGISTERas of 07-21 10:47 UTC
B
api.zatena.com
76.4 / 100 · rank 1395 of 1511
last 120 hours · short tick = valid 402 · full tick = invalid or no answer · faint = not probed
score components (0-100) · not the raw measurements below
Availability62
Latency84
Price integrity100
Protocol85
Consistency75
Availability is the one component that is a success rate, so it alone carries an evidence discount: it enters as the 95% Wilson lower bound of the measured share (cubed), which is why its bar reads below the raw percentage above — thin evidence scores below a long proven record. Latency, price, protocol and consistency are direct measurements, shown as-is.
| Availability (valid 402 returned) | 91.5% of 118 probes · single vantage |
| Median 402 handshake | 430ms |
| p90 handshake | 455ms |
| Catalog price (advertised) | $0.001 |
| Live price (median demanded) | $0.001 |
| Price status | match |
| Protocol | x402 v1 |
| Category (our classification) | finance-crypto |
| Payment receiver | 0x563B…d8f5 · stable since Jul 12 |
| Base USDC settlement to this receiver wallet (30d' measured by us) | x402-plausible (amount matches a listed price): $0 · 0 transfers · 1 distinct senders. All USDC inflow' upper bound incl. non-x402: $1 · 21 transfers. |
| Second vantage | our prober saw a valid 402 but the Cloudflare edge saw HTTP 530, 6h ago |
| Discovery (.well-known/x402) | not found |
| Catalog volume (their metric) | 3 calls/30d |
event log (from our catalog snapshots and probes)
| 2026-07-17 05:08 | price changed $0.01 → $0.001 |
Seller-provided description · unverified · not part of the rating
Normalized Polymarket catalog with implied probabilities and liquidity
v1-legacy
Embed this grade (free, always current)
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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, from a single network vantage for this service.
Operator of api.zatena.com? Dispute this rating. Scores are opinions based on automated measurements at the stated times.