X402/REGISTERas of 07-21 11:47 UTC
A
arbitrum-mpp-transaction-preflight-production.up.railway.app
95.2 / 100 · rank 670 of 1519
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
Availability89
Latency100
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 101 probes |
| Median 402 handshake | 228ms |
| p90 handshake | 249ms |
| Catalog price (advertised) | $0.1 |
| Live price (median demanded) | $0.1 |
| Price status | match |
| Protocol | x402 v2 |
| Category (our classification) | other |
| Payment receiver | 0x20CE…a0B7 · stable since Jul 12 |
| On-chain settlement | ⚠ settles on Arbitrum; we index Base and Solana only, so settlement is not corroborated for this service |
| Second vantage | confirmed 402 from a second network path (Cloudflare edge), 1h ago |
| Discovery (.well-known/x402) | not found |
| Catalog volume (their metric) | 1 calls/30d |
Seller-provided description · unverified · not part of the rating
Simulate and risk-score an Arbitrum transaction before signing.
Embed this grade (free, always current)
<a href="https://x402register.com/s/arbitrum-mpp-transaction-preflight-production.up.railway.app.html"><img src="https://x402register.com/badge/arbitrum-mpp-transaction-preflight-production.up.railway.app.svg" alt="x402 register grade A"></a>
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.
Operator of arbitrum-mpp-transaction-preflight-production.up.railway.app? Dispute this rating. Scores are opinions based on automated measurements at the stated times.