| Availability (valid 402 returned) | 100.0% of 61 probes · single vantage |
| Median 402 handshake | 276ms |
| p90 handshake | 330ms |
| Catalog price (advertised) | $0.01 |
| Live price (median demanded) | $0.01 |
| Price status | match |
| Protocol | x402 v2 |
| Category (our classification) | commerce-payments |
| Payment receiver | 0x9876…2690 · 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 |
| Discovery (.well-known/x402) | not found |
| Catalog volume (their metric) | 3 calls/30d |
Pre-flight a Base payment destination before you send. Verifies the EIP-55 checksum, measures distance from an address you expect — catching a mistyped digit and the shared prefix-and-suffix shape of a ground look-alike — flags the zero address, burn sinks …
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 payee.schemasure.com? Dispute this rating. Scores are opinions based on automated measurements at the stated times.