x402-lookup-seller.fly.dev

82.8 / 100 · rank 1747 of 1849

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

Availability76

Latency91

Price integrity87

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)	98.4% of 61 probes
Median 402 handshake	284ms
p90 handshake	957ms
Catalog price (advertised)	$0.002
Live price (median demanded)	$0.002
Price status	match
Protocol	x402 v2
Category (our classification)	data-intel
Payment receiver	0x4396…4c70 · stable since Jul 12
Base USDC settlement to this receiver wallet (30d' measured by us)	x402-plausible (amount matches a listed price): $0 · 1 transfers · 1 distinct senders. All USDC inflow' upper bound incl. non-x402: $0 · 1 transfers.
Second vantage	confirmed 402 from a second network path (Cloudflare edge), just now
Discovery (.well-known/x402)	present
Catalog volume (their metric)	2 calls/30d

event log (from our catalog snapshots and probes)

2026-09-06 21:36	price changed $0.01 → $0.002
2026-09-06 05:33	price changed $0.005 → $0.01

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

Base transaction status and USDC balance checks for settlement verification. Pass exactly one of hash= (or tx=) for a Base tx receipt with usdcIn/usdcOut, or address= for ETH+USDC balances and recent USDC transfers. Use when verifying a Base USDC payment …

Embed this grade (free, always current)

<a href="https://x402register.com/s/x402-lookup-seller.fly.dev.html"><img src="https://x402register.com/badge/x402-lookup-seller.fly.dev.svg" alt="x402 register grade B"></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 x402-lookup-seller.fly.dev? Dispute this rating. Scores are opinions based on automated measurements at the stated times.