| Availability (valid 402 returned) | 74.2% of 62 probes · single vantage |
| Median 402 handshake | 900ms |
| p90 handshake | 995ms |
| Catalog price (advertised) | $0.001 |
| Live price (median demanded) | $0.001 |
| Price status | match |
| Protocol | x402 v2 |
| Category (our classification) | commerce-payments |
| Payment receiver | 0x42ad…ae8f · stable since Jul 12 |
| Base USDC inflow to this receiver wallet (30d, all sources — not just x402) | none observed |
| Second vantage | our prober saw a valid 402 but the Cloudflare edge saw HTTP 502, 1h ago |
| Discovery (.well-known/x402) | not found |
| Catalog volume (their metric) | 2 calls/30d |
Direct pay-per-request AI inference through Clarity using local:qwen3:1.7b. Pay the live x402 challenge and receive an OpenAI-compatible chat completion directly.
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.
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