A
shop.northheart.app
91.1 / 100 · rank 2556 of 3056
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
Availability83
Latency100
Price integrity100
Protocol85
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 62 probes |
| Median 402 handshake | 139ms |
| p90 handshake | 163ms |
| Catalog price (advertised) | $0.005 |
| Live price (median demanded) | $0.005 |
| Price status | match |
| Protocol | x402 v1 |
| Category (our classification) | commerce-payments |
| Payment receiver | 0xd9D1…9352 · stable since Jul 12 |
| Base USDC settlement to this receiver wallet (30d' measured by us) | x402-plausible (amount matches a listed price): $0 · 0 transfers · 1 distinct senders. All USDC inflow' upper bound incl. non-x402: $0 · 37 transfers. |
| Second vantage | confirmed 402 from a second network path (Cloudflare edge), just now |
| Discovery (.well-known/x402) | not found |
| Catalog volume (their metric) | 2 calls/30d |
Seller-provided description · unverified · not part of the rating
Shows exactly what your working payment looked like: the decoded payment header and a few request headers (only answers after a payment has gone through)
v1-legacy
Embed this grade (free, always current)
<a href="https://x402register.com/s/shop.northheart.app.html"><img src="https://x402register.com/badge/shop.northheart.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 shop.northheart.app? Dispute this rating. Scores are opinions based on automated measurements at the stated times.