X402/REGISTERas of 07-21 10:47 UTC

sandbox.node4all.com

93.0 / 100 · rank 922 of 1511

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

Availability90

Latency100

Price integrity100

Protocol100

Consistency75

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)	99.4% of 160 probes
Median 402 handshake	213ms
p90 handshake	254ms
Catalog price (advertised)	$0.002
Live price (median demanded)	$0.002
Price status	match
Protocol	x402 v2
Category (our classification)	security-infra
Payment receiver	0xd275…6Ca6 · 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), 2h ago
Discovery (.well-known/x402)	not found
Catalog volume (their metric)	33 calls/30d

Seller-provided description · unverified · not part of the rating

Node4All Fortune — deterministic fortune reading derived from the x402 payment authorization nonce. Flagship demo of the Node4All x402 v2 payment flow. Operator: Node4All (https://node4all.com). Currency: USDC on Base.

Embed this grade (free, always current)

<a href="https://x402register.com/s/sandbox.node4all.com.html"><img src="https://x402register.com/badge/sandbox.node4all.com.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 sandbox.node4all.com? Dispute this rating. Scores are opinions based on automated measurements at the stated times.