x402-qr-api.vercel.app

91.4 / 100 · rank 1680 of 2042

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

Availability84

Latency90

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 65 probes · single vantage
Median 402 handshake	235ms
p90 handshake	1031ms
Catalog price (advertised)	$0.002
Live price (median demanded)	$0.002
Price status	match
Protocol	x402 v2
Category (our classification)	content-media
Payment receiver	0x01cc…888b · stable since Jul 12
Base USDC inflow to this receiver wallet (30d, all sources — not just x402)	none observed
Discovery (.well-known/x402)	not found
Catalog volume (their metric)	1 calls/30d

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

Validate an email address: format check plus a live MX record lookup on its domain

Embed this grade (free, always current)

<a href="https://x402register.com/s/x402-qr-api.vercel.app.html"><img src="https://x402register.com/badge/x402-qr-api.vercel.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, from a single network vantage for this service.

Operator of x402-qr-api.vercel.app? Dispute this rating. Scores are opinions based on automated measurements at the stated times.