api.duoleads.com
| Availability (valid 402 returned) | 100.0% of 62 probes · single vantage |
| Median 402 handshake | 82ms |
| p90 handshake | 593ms |
| Catalog price (advertised) | $0.05 |
| Live price (median demanded) | $0.05 |
| Price status | match |
| Protocol | x402 v2 |
| Category (our classification) | finance-crypto |
| Payment receiver | 0xCD67…3A39 · stable since Jul 12 |
| Base USDC settlement to this receiver wallet (30d' measured by us) | x402-plausible (amount matches a listed price): $3 · 52 transfers · 1 distinct senders. All USDC inflow' upper bound incl. non-x402: $3 · 52 transfers. |
| Discovery (.well-known/x402) | present |
| Catalog volume (their metric) | 2 calls/30d |
listed products (catalog path · advertised price · live price we measured)
| /v1/code/semver | $0.05 | $0.05 (matches) |
| /v1/geo/polygon | $0.05 | $0.05 (matches) |
| /v1/id/gs1 | $0.05 | $0.05 (matches) |
| /v1/id/national | $0.05 | $0.05 (matches) |
| /v1/id/security | $0.05 | $0.05 (matches) |
| /v1/num/radix | $0.05 | $0.05 (matches) |
| /v1/num/stats | $0.05 | $0.05 (matches) |
| /v1/num/words | $0.05 | $0.05 (matches) |
| /v1/ref/airport | $0.05 | $0.05 (matches) |
| /v1/ref/currency | $0.05 | $0.05 (matches) |
and 23 more listed paths
grade evidence: hourly probes of /v1/chain/address. 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. This operator lists 33 products; the grade is evidence from a small sample of them.
Identify which blockchain an address belongs to and validate its encoding: EVM EIP-55 checksum, Bitcoin base58check and bech32/bech32m with witness version, Solana base58 and on-curve check, Cosmos bech32 with its HRP, Tron, XRP, Litecoin, Dogecoin, …
<a href="https://x402register.com/s/api.duoleads.com.html"><img src="https://x402register.com/badge/api.duoleads.com.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 api.duoleads.com? Dispute this rating. Scores are opinions based on automated measurements at the stated times.