X402/REGISTER
B

pet-calc.x402tookit.com

77.6 / 100 · rank 3089 of 3229
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
Availability70
Latency74
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)96.7% of 61 probes · single vantage
Median 402 handshake436ms
p90 handshake2106ms
Catalog price (advertised)$0.02
Live price (median demanded)$0.02
Price statusmatch
Protocolx402 v2
Category (our classification)other
Payment receiver0xb531…DBDa (+1 more) · 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
Discovery (.well-known/x402)present
Catalog volume (their metric)3 calls/30d

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

/aquarium-volume$0.02not yet probed
/dog-age$0.02not yet probed
/feeding-schedule$0.02not yet probed
/food-portion$0.02not yet probed
/ideal-weight-bcs$0.02not yet probed
/resting-energy$0.02not yet probed

grade evidence: hourly probes of /aquarium-volume. 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 description of the probed product (one of 6 listed) · unverified · not part of the rating

Aquarium volume in US gallons and litres from inside dimensions, usable water after substrate, and the water's weight.

Embed this grade (free, always current)
x402 register grade B
<a href="https://x402register.com/s/pet-calc.x402tookit.com.html"><img src="https://x402register.com/badge/pet-calc.x402tookit.com.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, from a single network vantage for this service.

Operator of pet-calc.x402tookit.com? Dispute this rating. Scores are opinions based on automated measurements at the stated times.