x402 census · api.magentlab.com · cbe899bbd347 · JSON
POST /api/calc/pcp_hf
unreachable
Khan 2019 PCP-HF 10-year incident heart-failure percent for age 30-79 from sex, caller-assigned white or black cohort, treated or untreated systolic BP and fasting glucose, total and HDL cholesterol, BMI, smoking, and QRS duration. Table 2 coefficients. Caller assigns cohort; magent does not assign race. Not PREVENT 2024, not 2013 PCE, not a diagnosis or treatment order. magent does not assay lip…
Verdict: dead listing. connection failed or timed out.
Facts from the catalogs
| Field | Value |
|---|---|
| URL | https://api.magentlab.com/api/calc/pcp_hf |
| Method | POST |
| Price | $0.005 USDC = 5000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 |
| Network | eip155:8453 (base) |
| payTo | 0x836Be278f1739fB4308091cD1852F7971Bc19Ee2 |
| Seller | api.magentlab.com |
| Catalogs | cdp (row updated 2026-09-28) |
| Listed since (lower bound) | 2026-09-28 (earliest catalog timestamp; catalogs report last-update times only) |
| Last catalog update | 2026-09-28 |
| CDP quality counters | 2 calls and 1 unique payers in 30 days, last call 2026-09-28 (catalog-reported, not verified on chain) |
| Category (keyword rule) | other/unknown |
| Templated path | no |
| x402Version in catalog | 2 |
| Service name / tags | magent · pcp-hf, heart-failure, hemodynamics, cvd-risk, calculator |
Unpaid probe (census of 2026-09-30)
| Field | Value |
|---|---|
| Probed at | 2026-09-30T23:19:17.294Z |
| HEAD | no answer |
| GET | no answer |
| Verdict | unreachable connection failed or timed out |
| 402 carried in | n/a |
| x402Version in the 402 | n/a |
| accepts[0] | none |
| Live amount equals catalog price | no (live vs catalog 5000) |
| Live payTo equals catalog payTo | no |
| extensions.bazaar in the 402 | no |
| PAYMENT-REQUIRED header | no |
| WWW-Authenticate offer | none |
| Content type / server / CORS | n/a / n/a / none |
| Latency | 0 ms |
| Error | skipped: host unreachable (fetch failed: ECONNRESET) after 3 consecutive connection errors |
No hourly re-probe has reached this resource yet; the cron covers a rotating slice of 150 per hour.
On-chain facts for the payTo (public address)
| Field | Value |
|---|---|
| Distinct payers | 1 |
| Payments | 2 |
| USDC volume | $0.01 |
| Median payment | $0.005 |
| First / last payment | 2026-08-26 / 2026-08-26 |
| Sampler-shaped share of payments | 100.0% |
| Payers that are not samplers | 0 |
| Source | forensics-2026-09-30 |
| Address | 0x836Be278f1739fB4308091cD1852F7971Bc19Ee2 |
Declared input and output (extensions.bazaar)
{
"input": {
"body": {
"items": [
{
"age": 50,
"antihypertensive": false,
"bmi_kg_m2": 22,
"cohort": "white",
"diabetes_medication": false,
"glucose_mg_dl": 90,
"hdl_mg_dl": 55,
"qrs_ms": 90,
"sbp_mm_hg": 120,
"sex": "female",
"smoker": false,
"total_cholesterol_mg_dl": 180
},
{
"age": 50,
"antihypertensive": false,
"bmi_kg_m2": 22,
"cohort": "white",
"diabetes_medication": false,
"glucose_mg_dl": 90,
"hdl_mg_dl": 55,
"qrs_ms": 90,
"sbp_mm_hg": 120,
"sex": "female",
"smoker": false,
"total_cholesterol_mg_dl": 180
}
]
},
"method": "POST",
"type": "http"
},
"output": {
"type": "json",
"example_truncated": true,
"chars": 4579
}
}
Try it (unpaid: shows the 402)
curl -si -X POST 'https://api.magentlab.com/api/calc/pcp_hf' -H 'accept: application/json' -H 'content-type: application/json' --data '{}'
The catalog declares POST. A 402 answer carries the payment requirements in the JSON body and, for x402 v2, base64 in the PAYMENT-REQUIRED header. This page never sends a payment.
Paid checks (x402, USDC on Base)
GET https://bazaar.agentexchange.work/r/cbe899bbd347/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"cbe899bbd347"} places this resource at the top of the report and search pages for 30 days for $1.00, labelled. Unpaid requests answer 402 with the terms. Pricing.
Catalog references: agentic.market (CDP Bazaar front end) · this record as JSON · all resources on api.magentlab.com.