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

stackbill.app

93.0 / 100 · rank 928 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 handshake241ms
p90 handshake276ms
Catalog price (advertised)$0.1
Live price (median demanded)$0.1
Price statusmatch
Protocolx402 v2
Category (our classification)commerce-payments
Payment receiver0x1f2A…652D · 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), just now
Discovery (.well-known/x402)not found
Catalog volume (their metric)6 calls/30d
Seller-provided description · unverified · not part of the rating

Generate a finished, professional invoice PDF from JSON — recipient and line items in, a ready-to-send application/pdf out. Layouts: standard, legal, creative. Totals and tax are computed server-side so the numbers always add up. First payment auto-creates …

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