Agent Exchange x402 census and directory

x402 census · api.magentlab.com · 077a254fb1cd · JSON

POST /api/calc/canadian_ct_head

unreachable

Canadian CT Head Rule (Stiell 2001). CT is indicated if any high-risk factor (GCS <15 at 2 hours, suspected open or depressed skull fracture, any sign of basal skull fracture, vomiting 2 or more times, or age 65 or older) or any medium-risk factor (amnesia before impact >30 min, or dangerous mechanism as assigned by the caller). Not a diagnosis, not NEXUS, not PECARN, not CATCH, and not pediatric…

Verdict: dead listing. connection failed or timed out.

Facts from the catalogs

FieldValue
URLhttps://api.magentlab.com/api/calc/canadian_ct_head
MethodPOST
Price$0.005 USDC = 5000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Networkeip155:8453 (base)
payTo0x836Be278f1739fB4308091cD1852F7971Bc19Ee2
Sellerapi.magentlab.com
Catalogscdp (row updated 2026-09-28)
Listed since (lower bound)2026-09-28 (earliest catalog timestamp; catalogs report last-update times only)
Last catalog update2026-09-28
CDP quality counters1 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 pathno
x402Version in catalog2
Service name / tagsmagent · canadian-ct-head, head-ct, emergency, trauma, cibi

Unpaid probe (census of 2026-09-30)

FieldValue
Probed at2026-09-30T23:19:17.302Z
HEADno answer
GETno answer
Verdictunreachable connection failed or timed out
402 carried inn/a
x402Version in the 402n/a
accepts[0]none
Live amount equals catalog priceno (live vs catalog 5000)
Live payTo equals catalog payTono
extensions.bazaar in the 402no
PAYMENT-REQUIRED headerno
WWW-Authenticate offernone
Content type / server / CORSn/a / n/a / none
Latency0 ms
Errorskipped: 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)

FieldValue
Distinct payers1
Payments2
USDC volume$0.01
Median payment$0.005
First / last payment2026-08-26 / 2026-08-26
Sampler-shaped share of payments100.0%
Payers that are not samplers0
Sourceforensics-2026-09-30
Address0x836Be278f1739fB4308091cD1852F7971Bc19Ee2

Declared input and output (extensions.bazaar)

{
 "input": {
  "body": {
   "items": [
    {
     "age": 40,
     "amnesia_before_impact_gt_30min": false,
     "any_sign_basal_skull_fx": false,
     "dangerous_mechanism": false,
     "gcs_lt_15_at_2h": false,
     "suspected_open_or_depressed_skull_fx": false,
     "vomiting_two_or_more": false
    },
    {
     "age": 40,
     "amnesia_before_impact_gt_30min": false,
     "any_sign_basal_skull_fx": false,
     "dangerous_mechanism": false,
     "gcs_lt_15_at_2h": false,
     "suspected_open_or_depressed_skull_fx": false,
     "vomiting_two_or_more": false
    }
   ]
  },
  "method": "POST",
  "type": "http"
 },
 "output": {
  "type": "json",
  "example_truncated": true,
  "chars": 2405
 }
}

Try it (unpaid: shows the 402)

curl -si -X POST 'https://api.magentlab.com/api/calc/canadian_ct_head' -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/077a254fb1cd/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"077a254fb1cd"} 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.