| Availability (valid 402 returned) | 100.0% of 70 probes |
| Median 402 handshake | 137ms |
| p90 handshake | 149ms |
| Catalog price (advertised) | $0.004 |
| Live price (median demanded) | $0.004 |
| Price status | match |
| Protocol | x402 v2 |
| Category (our classification) | other |
| Payment receiver | 0x2880…4E5E · 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 |
| Second vantage | confirmed 402 from a second network path (Cloudflare edge), just now |
| Discovery (.well-known/x402) | present |
| Catalog volume (their metric) | 1 calls/30d |
| /v1/burst-best-pick | $0.008 | $0.008 (matches) |
| /v1/clone-detect | $0.01 | $0.01 (matches) |
| /v1/color-cast | $0.004 | $0.004 (matches) |
| /v1/edit-trace | $0.006 | $0.006 (matches) |
| /v1/ela-analysis | $0.006 | $0.006 (matches) |
| /v1/email-html-compat | $0.004 | $0.004 (matches) |
| /v1/exposure-check | $0.003 | $0.003 (matches) |
| /v1/horizon-level | $0.004 | $0.004 (matches) |
| /v1/i18n-overflow | $0.003 | $0.003 (matches) |
| /v1/jpeg-artifacts | $0.005 | $0.005 (matches) |
and 12 more listed paths
grade evidence: hourly probes of /v1/blur-detect. 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.
Converts the image to BT.601 luma at a fixed analysis size (long side analysis_max_side, default 1024; smaller images are not upscaled) and computes the variance of the 4-neighbour Laplacian (Pech-Pacheco et al. 2000) and the Tenengrad energy (mean squared …
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 bild.halowerk.com? Dispute this rating. Scores are opinions based on automated measurements at the stated times.