api.cardhedger.com

85.7 / 100 · rank 2240 of 2418

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

Latency54

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 62 probes · single vantage
Median 402 handshake	1228ms
p90 handshake	1482ms
Catalog price (advertised)	$0.01
Live price (median demanded)	$0.01
Price status	match
Protocol	x402 v2
Category (our classification)	other
Payment receiver	0x1011…f12b (+4 more) · changed 6× since Jul 12
Base USDC inflow to this receiver wallet (30d, all sources — not just x402)	none observed
Discovery (.well-known/x402)	not found
Catalog volume (their metric)	17 calls/30d

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

/v1/agent/cards/all-prices-by-card	$0.01	$0.01 (matches)
/v1/agent/cards/card-search	$0.01	$0.01 (matches)
/v1/agent/cards/comps	$0.02	$0.02 (matches)
/v1/agent/cards/fmv-by-cert	$0.01	$0.01 (matches)
/v1/agent/cards/prices-by-cert	$0.01	not yet probed

grade evidence: hourly probes of /v1/agent/cards/prices-by-cert. 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.

event log (from our catalog snapshots and probes)

20261020 10:35	payment receiver changed to 0x1011…f12b, 0x7d82…094c, 0x8357…780d
20261020 04:34	payment receiver changed to 0x7d82…094c, 0x8357…780d, 0x8551…c3e2
20261019 16:35	payment receiver changed to 0x7d82…094c, 0x840a…6706, 0x9e5e…7cf1
20261019 10:40	payment receiver changed to 0x840a…6706, 0x9e5e…7cf1, 0xc3e4…ef66
20261019 04:40	payment receiver changed to 0x7817…241e, 0x9e5e…7cf1, 0xc3e4…ef66
20261018 22:40	payment receiver changed to 0x5aa2…08f6, 0xbf61…aef4, 0xc3e4…ef66

Seller description of the probed product (one of 5 listed) · unverified · not part of the rating

Get card information and pricing by grader certificate number.

receiver-changed

Embed this grade (free, always current)

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