x402 census · api.magentlab.com · 8354ebcdd40c · JSON
POST /api/calc/phq_9
unreachable
Kroenke 2001 PHQ-9 from nine caller-assigned DSM-IV depression items as integers 0-3 (0 not at all, 1 several days, 2 more than half the days, 3 nearly every day). magent does not interpret the items. Total 0-27. Severity: 0-4 none_minimal, 5-9 mild, 10-14 moderate, 15-19 moderately_severe, 20-27 severe. Returns screen_ge_10 (score ≥10; this paper 88% sensitivity and 88% specificity for major dep…
Verdict: dead listing. connection failed or timed out.
Facts from the catalogs
| Field | Value |
|---|---|
| URL | https://api.magentlab.com/api/calc/phq_9 |
| 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 | 1 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 · phq-9, depression, screening, emergency, calculator |
Unpaid probe (census of 2026-09-30)
| Field | Value |
|---|---|
| Probed at | 2026-09-30T23:19:17.300Z |
| 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": [
{
"anhedonia": 0,
"appetite": 0,
"concentration": 0,
"depressed": 0,
"energy": 0,
"failure": 0,
"psychomotor": 0,
"self_harm": 0,
"sleep": 0
},
{
"anhedonia": 0,
"appetite": 0,
"concentration": 0,
"depressed": 0,
"energy": 0,
"failure": 0,
"psychomotor": 0,
"self_harm": 0,
"sleep": 0
}
]
},
"method": "POST",
"type": "http"
},
"output": {
"type": "json",
"example_truncated": true,
"chars": 2596
}
}
Try it (unpaid: shows the 402)
curl -si -X POST 'https://api.magentlab.com/api/calc/phq_9' -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/8354ebcdd40c/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"8354ebcdd40c"} 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.