X402/REGISTERas of 07-21 11:47 UTC

x402.fiasignals.com

62.3 / 100 · rank 1464 of 1519

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

Availability39

Latency65

Price integrity100

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)	80.0% of 160 probes · single vantage
Median 402 handshake	850ms
p90 handshake	901ms
Catalog price (advertised)	$0.03
Live price (median demanded)	$0.03
Price status	match
Protocol	x402 v2
Category (our classification)	finance-crypto
Payment receiver	0x8D32…853F · stable since Jul 12
Base USDC settlement to this receiver wallet (30d' measured by us)	x402-plausible (amount matches a listed price): $1 · 5 transfers · 3 distinct senders. All USDC inflow' upper bound incl. non-x402: $1 · 8 transfers.
Second vantage	our prober saw a valid 402 but the Cloudflare edge saw HTTP 530, 1h ago
Discovery (.well-known/x402)	not found
Catalog volume (their metric)	1 calls/30d

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

/token-safety/batch

$0.03 / $0.5

not yet probed

grade evidence: hourly probes of /token-safety/batch. 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.

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

Fia Signals x402 Base USDC token safety and smart contract risk batch API for buyer agents, trading bots, swap routers, and A2A commerce. Screen up to 5 Base/EVM contracts before a swap for contract risk, rugpull, honeypot, liquidity, and market risk. …

Embed this grade (free, always current)

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

Operator of x402.fiasignals.com? Dispute this rating. Scores are opinions based on automated measurements at the stated times.