base-token-check.fly.dev

92.5 / 100 · rank 1542 of 2100

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

Availability83

Latency100

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 61 probes · single vantage
Median 402 handshake	186ms
p90 handshake	206ms
Catalog price (advertised)	$0.01
Live price (median demanded)	$0.01
Price status	match
Protocol	x402 v2
Category (our classification)	finance-crypto
Payment receiver	0x540c…4Cd5 · stable since Jul 12
Base USDC settlement to this receiver wallet (30d' measured by us)	x402-plausible (amount matches a listed price): $0 · 7 transfers · 2 distinct senders. All USDC inflow' upper bound incl. non-x402: $0 · 8 transfers.
Discovery (.well-known/x402)	not found
Catalog volume (their metric)	2 calls/30d

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

/v1/token-check	$0.01	$0.01 (matches)
/v1/transfer-check	$0.01	$0.01 (matches)
/v1/counterparty-check	$0.01	not yet probed

grade evidence: hourly probes of /v1/counterparty-check. Availability, latency and protocol measure the operator's shared infrastructure and generalize across its products; the price check applies to the probed product. We now also probe one other product per hour, rotating; "live price we measured" shows what each answered.

Seller description of the probed product (one of 3 listed) · unverified · not part of the rating

Check a Base address before an agent pays or approves it. Input: one address. Output: allow or warn. Reports wallet or contract, whether the wallet has sent a transaction, whether a contract already had code 7 days ago, and whether it is a proxy (EIP-1967, …

Embed this grade (free, always current)

<a href="https://x402register.com/s/base-token-check.fly.dev.html"><img src="https://x402register.com/badge/base-token-check.fly.dev.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 base-token-check.fly.dev? Dispute this rating. Scores are opinions based on automated measurements at the stated times.