X402/REGISTERas of 07-21 10:47 UTC
A

zaref.dev

93.1 / 100 · rank 912 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
Availability93
Latency75
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 160 probes
Median 402 handshake597ms
p90 handshake621ms
Catalog price (advertised)$0.005
Live price (median demanded)$0.005
Price statusmatch
Protocolx402 v2
Category (our classification)finance-crypto
Payment receiver0x6382…4C15 · 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
Second vantageconfirmed 402 from a second network path (Cloudflare edge), 15h ago
Discovery (.well-known/x402)not found
Catalog volume (their metric)7 calls/30d

listed products (catalog path · advertised price · live price we measured)

/v1/deeds-fees$0.005$0.005 (matches)
/calc/crypto-tax$0.01not yet probed
/calc/learnership$0.01not yet probed
/calc/medical-tax-credit$0.01not yet probed
/calc/nca-max-rate$0.01not yet probed
/calc/toll-route$0.01not yet probed
/v1/all$0.025not yet probed
/v1/bcea-thresholds$0.005not yet probed
/v1/bcea-thresholds/history$0.01not yet probed
/v1/bond-yields$0.005not yet probed

and 63 more listed paths

grade evidence: hourly probes of /v1/fuel-prices. Availability, latency and protocol measure the operator's shared infrastructure and generalize across its products; the price check applies to the probed product. We now also probe one other product per hour, rotating; "live price we measured" shows what each answered. This operator lists 73 products; the grade is evidence from a small sample of them.

event log (from our catalog snapshots and probes)

2026-07-14 23:45price changed $0.025 → $0.005
2026-07-14 17:36price changed $0.005 → $0.025
2026-07-13 19:09price changed $0.002 → $0.005
Seller description of the probed product (one of 73 listed) · unverified · not part of the rating

South African Fuel prices (Current SA retail/wholesale fuel prices: petrol 93/95 (inland & coastal), diesel 50ppm, illuminating paraffin. Rand per litre.) Clean cited JSON with official source URL, effective date and freshness flag.

Embed this grade (free, always current)
x402 register grade A
<a href="https://x402register.com/s/zaref.dev.html"><img src="https://x402register.com/badge/zaref.dev.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 zaref.dev? Dispute this rating. Scores are opinions based on automated measurements at the stated times.