A
q402.quackai.ai
92.2 / 100 · rank 1237 of 1604
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
Availability83
Latency97
Price integrity100
Protocol100
Consistency100
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) | 100.0% of 62 probes · single vantage |
| Median 402 handshake | 274ms |
| p90 handshake | 388ms |
| Catalog price (advertised) | $0.02 |
| Live price (median demanded) | $0.02 |
| Price status | match |
| Protocol | x402 v2 |
| Category (our classification) | finance-crypto |
| Payment receiver | 0x9bbb…1d6b · stable since Jul 12 |
| Base USDC inflow to this receiver wallet (30d, all sources — not just x402) | none observed |
| Discovery (.well-known/x402) | not found |
| Catalog volume (their metric) | 1 calls/30d |
Seller-provided description · unverified · not part of the rating
Agent Trust Check for 0xe3eaff1266e3c3bf660b2fce7dc7bbf2eb58dc83 — ERC-8004 identity, reputation, on-chain activity
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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 q402.quackai.ai? Dispute this rating. Scores are opinions based on automated measurements at the stated times.