x402-research-iota.vercel.app

67.0 / 100 · rank 2544 of 2596

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

Availability48

Latency90

Price integrity85

Protocol100

Consistency50

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)	88.5% of 61 probes
Median 402 handshake	216ms
p90 handshake	1130ms
Catalog price (advertised)	$0.03
Live price (median demanded)	$0.03
Price status	match
Protocol	x402 v2
Category (our classification)	finance-crypto
Payment receiver	0xa26f…8147 (+1 more) · changed 1× since Jul 12
Base USDC settlement to this receiver wallet (30d' measured by us)	x402-plausible (amount matches a listed price): $0 · 11 transfers · 4 distinct senders. All USDC inflow' upper bound incl. non-x402: $170 · 13 transfers.
Second vantage	confirmed 402 from a second network path (Cloudflare edge), just now
Discovery (.well-known/x402)	present
Catalog volume (their metric)	5 calls/30d

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

/api/brief/asset	$0.03	not yet probed
/api/firm/risk-snapshot	$0.03	not yet probed
/api/signal-batch	$0.02	not yet probed
/api/signal/asset	$0.003	not yet probed
/api/x402/approval-enumerate	$0.03	not yet probed
/api/x402/invoice-decode	$0.02	not yet probed
/api/x402/preflight	$0.05	not yet probed
/api/x402/settlement-status	$0.02	not yet probed

grade evidence: hourly probes of /api/firm/risk-snapshot. Availability, latency and protocol measure the operator's shared infrastructure and generalize across its products; the price check applies to the probed product. We are beginning to probe secondary products, rotating one per hour.

event log (from our catalog snapshots and probes)

20261024 10:36	payment receiver changed to 0xa26f…8147, 0xacfc…fb30
2026-10-24 22:43	price changed $0.1 → $0.03

Seller description of the probed product (one of 8 listed) · unverified · not part of the rating

Use before interacting with an unfamiliar Base (chain 8453) address: returns a public-data red-flag snapshot (contract vs EOA, EIP-7702 delegation, source verification, upgradeable proxy, age, activity, ETH/USDC balance, risk level). Pass ?address=0x... …

receiver-changed

Embed this grade (free, always current)

<a href="https://x402register.com/s/x402-research-iota.vercel.app.html"><img src="https://x402register.com/badge/x402-research-iota.vercel.app.svg" alt="x402 register grade C"></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-research-iota.vercel.app? Dispute this rating. Scores are opinions based on automated measurements at the stated times.