Agent Exchange x402 census and directory

x402 census · api.magentlab.com · 052424879ad5 · JSON

POST /api/calc/rome_iv_fd

unreachable

Stanghellini 2016 Rome IV B1 FD. rome_iv_fd is true iff last-3-months criteria with 6-month onset, no structural disease likely to explain symptoms, and PDS (B1a) and/or EPS (B1b). pds iff fullness and/or early satiation >=3 days/week. eps iff epigastric pain and/or burning >=1 day/week. Overlap allowed. Caller assigns six flags. magent does not examine the patient. Not a diagnosis, not Rome III …

Verdict: dead listing. connection failed or timed out.

Facts from the catalogs

FieldValue
URLhttps://api.magentlab.com/api/calc/rome_iv_fd
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 · rome-iv-fd, functional-dyspepsia, gi, pds, eps

Unpaid probe (census of 2026-09-30)

FieldValue
Probed at2026-09-30T23:19:17.305Z
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": [
    {
     "bothersome_early_satiation_ge_3_days_week": false,
     "bothersome_epigastric_burning_ge_1_day_week": false,
     "bothersome_epigastric_pain_ge_1_day_week": false,
     "bothersome_postprandial_fullness_ge_3_days_week": true,
     "criteria_last_3_months_onset_6_months": true,
     "no_structural_disease": true
    },
    {
     "bothersome_early_satiation_ge_3_days_week": false,
     "bothersome_epigastric_burning_ge_1_day_week": false,
     "bothersome_epigastric_pain_ge_1_day_week": false,
     "bothersome_postprandial_fullness_ge_3_days_week": true,
     "criteria_last_3_months_onset_6_months": true,
     "no_structural_disease": true
    }
   ]
  },
  "method": "POST",
  "type": "http"
 },
 "output": {
  "type": "json",
  "example_truncated": true,
  "chars": 2865
 }
}

Try it (unpaid: shows the 402)

curl -si -X POST 'https://api.magentlab.com/api/calc/rome_iv_fd' -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/052424879ad5/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"052424879ad5"} 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.