| Availability (valid 402 returned) | 100.0% of 160 probes |
| Median 402 handshake | 1781ms |
| p90 handshake | 2446ms |
| Catalog price (advertised) | $0.05 |
| Live price (median demanded) | $0.05 |
| Price status | match |
| Protocol | x402 v2 |
| Category (our classification) | finance-crypto |
| Payment receiver | 0xc9b7…3e6A · stable since Jul 12 |
| Base USDC settlement to this receiver wallet (30d' measured by us) | x402-plausible (amount matches a listed price): $113 · 2'191 transfers · 10 distinct senders. All USDC inflow' upper bound incl. non-x402: $113 · 2'203 transfers. |
| Second vantage | confirmed 402 from a second network path (Cloudflare edge), just now |
| Discovery (.well-known/x402) | not found |
| Catalog volume (their metric) | 325 calls/30d |
| /market/summary | $0.25 | $0.25 (matches) |
| /metrics/buy-sell-volume-imbalance | $0.05 | $0.05 (matches) |
| /metrics/kyle-lambda | $0.05 | $0.05 (matches) |
| /metrics/order-flow-hhi | $0.05 | $0.05 (matches) |
| /options/gex | $0.05 | $0.05 (matches) |
| /options/vrp | $0.05 | $0.05 (matches) |
| /metrics/amihud-illiquidity | $0.05 | not yet probed |
| /metrics/cvd | $0.05 | not yet probed |
| /metrics/momentum | $0.05 | not yet probed |
| /metrics/reversal | $0.05 | not yet probed |
and 6 more listed paths
grade evidence: hourly probes of /metrics/vpin. 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.
DripMetricsAI (api description at https://dripmetrics.ai/) provides on-demand crypto market microstructure and risk metrics for agents and developers. Agents can pay per request via x402 and receive structured JSON metrics without subscriptions or API …
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, corroborated by a second network path for this service.
Operator of api.dripmetrics.ai? Dispute this rating. Scores are opinions based on automated measurements at the stated times.