| Availability (valid 402 returned) | 91.1% of 146 probes · single vantage |
| Median 402 handshake | 157ms |
| p90 handshake | 1380ms |
| Catalog price (advertised) | $0.01 |
| Live price (median demanded) | $0.001 |
| Price status | mismatch (-90% vs advertised) |
| Protocol | x402 v2 |
| Category (our classification) | finance-crypto |
| Payment receiver | 0x15d3…1cc8 · 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 | our prober saw a valid 402 but the Cloudflare edge saw HTTP 0, 5h ago |
| Discovery (.well-known/x402) | present |
| Catalog volume (their metric) | 1 calls/30d |
Real-time and historical OHLCV candles (open/high/low/close/volume) for any crypto pair, any interval. For backtesting and signal agents. Free source. $0.01 USDC via x402 on Base. SYNTHORA. First 3 calls FREE per wallet — send header X-WALLET: 0x<addr>. No …
price-mismatch
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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