| Availability (valid 402 returned) | 100.0% of 80 probes |
| Median 402 handshake | 158ms |
| p90 handshake | 164ms |
| Catalog price (advertised) | $0.003 |
| Live price (median demanded) | $0.003 |
| Price status | match |
| Protocol | x402 v2 |
| Category (our classification) | data-intel |
| Payment receiver | 0x218B…8410 · stable since Jul 12 |
| On-chain settlement | testnet listing · no mainnet settlement to measure |
| Second vantage | confirmed 402 from a second network path (Cloudflare edge), 4h ago |
| Discovery (.well-known/x402) | not found |
| Catalog volume (their metric) | 4 calls/30d |
Repair malformed JSON from model or tool output using deterministic CPU rules. Returns parsed value, repaired JSON text and a changed flag. Send JSON {text:string}. Paid calls require a fresh secret random 32-byte base64url Idempotency-Key; reuse it only …
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, corroborated by a second network path for this service.
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