68trust / 100

Calc Grogan

by magent in Other

x402 APIFailing, checked 4 h ago

Grogan 2016 ATTRwt staging: 1 point when NT-proBNP >3000 ng/L; 1 point when cardiac TnT >0.05 ng/mL. Stage I = 0, II = 1, III = 2. Equal to a cutoff does not score. Cohort 4-year OS I 57% / II 42% / III 18%; stage III median 20 months (labels, not a prediction). Troponin T only. Not Gillmore NAC (no eGFR). Not Mayo AL. Not NYHA. magent does not assay the biomarkers.

POST
https://api.magentlab.com/api/calc/grogan
Price
$0.007
per call in USDC
Uptime
94.1%
last 30 days
Response time
150 ms
308 ms slowest 5%
Last check
Failed
4 h ago, next any minute now

Run a free test callHow to call it

Reliability

All checks passedSome failedAll failedNot checked

Latest check failed 4 h ago: Timed out

Status and outage history · Atom feed · Watch with other listings

How to call it

POST https://api.magentlab.com/api/calc/grogan

Each call costs $0.007 in USDC on Base, paid with the request over x402.

Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.

Example request

From the listing.

POST https://api.magentlab.com/api/calc/grogan
content-type: application/json

{
  "items": [
    {
      "nt_probnp_ng_l": 1500,
      "troponin_t_ng_ml": 0.02
    },
    {
      "nt_probnp_ng_l": 1500,
      "troponin_t_ng_ml": 0.02
    }
  ]
}

Parameters

ParameterTypeRequiredDescription
itemsarray of objectYes

Example response

The provider's example. We can't check it without paying.

Example response, 72 lines
{
  "count": 2,
  "items": [
    {
      "citation": {
        "authors": "Grogan M, Scott CG, Kyle RA, Zeldenrust SR, Gertz MA, Lin G, Klarich KW, Miller WL, Maleszewski JJ, Dispenzieri A",
        "doi": "10.1016/j.jacc.2016.06.033",
        "id": "grogan-2016",
        "pmid": "27585505",
        "source": "J Am Coll Cardiol. 2016;68(10):1014-1020",
        "title": "Natural History of Wild-Type Transthyretin Cardiac Amyloidosis and Risk Stratification Using a Novel Staging System"
      },
      "components": [
        {
          "factor": "nt_probnp_gt_3000",
          "points": 0,
          "present": false,
          "value": 1500
        },
        {
          "factor": "troponin_t_gt_0_05",
          "points": 0,
          "present": false,
          "value": 0.02
        }
      ],
      "disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
      "formula": "grogan",
      "formula_expression": "Grogan = (nt_probnp_ng_l > 3000) + (troponin_t_ng_ml > 0.05); each 1; Grogan 2016 ATTRwt; stage I = 0, II = 1, III = 2; equal to a cutoff does not add a point",
      "grogan_stage": "I",
      "max_score": 2,
      "nt_probnp_ng_l": 1500,
      "published_os_4_year_percent": 57,
      "score": 0,
      "troponin_t_ng_ml": 0.02
    },
    {
      "citation": {
        "authors": "Grogan M, Scott CG, Kyle RA, Zeldenrust SR, Gertz MA, Lin G, Klarich KW, Miller WL, Maleszewski JJ, Dispenzieri A",
        "doi": "10.1016/j.jacc.2016.06.033",
        "id": "grogan-2016",
        "pmid": "27585505",
        "source": "J Am Coll Cardiol. 2016;68(10):1014-1020",
        "title": "Natural History of Wild-Type Transthyretin Cardiac Amyloidosis and Risk Stratification Using a Novel Staging System"
      },
      "components": [
        {
          "factor": "nt_probnp_gt_3000",
          "points": 0,
          "present": false,
          "value": 1500
        },
        {
          "factor": "troponin_t_gt_0_05",
          "points": 0,
          "present": false,
          "value": 0.02
        }
      ],
      "disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
      "formula": "grogan",
      "formula_expression": "Grogan = (nt_probnp_ng_l > 3000) + (troponin_t_ng_ml > 0.05); each 1; Grogan 2016 ATTRwt; stage I = 0, II = 1, III = 2; equal to a cutoff does not add a point",
      "grogan_stage": "I",
      "max_score": 2,
      "nt_probnp_ng_l": 1500,
      "published_os_4_year_percent": 57,
      "score": 0,
      "troponin_t_ng_ml": 0.02
    }
  ],
  "path": "/api/calc/grogan"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.007.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.magentlab.com/api/calc/grogan' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"nt_probnp_ng_l":1500,"troponin_t_ng_ml":0.02},{"nt_probnp_ng_l":1500,"troponin_t_ng_ml":0.02}]}'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - -X POST 'https://api.magentlab.com/api/calc/grogan' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"nt_probnp_ng_l":1500,"troponin_t_ng_ml":0.02},{"nt_probnp_ng_l":1500,"troponin_t_ng_ml":0.02}]}' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode
JavaScript: pay and call
// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $0.007 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.007" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.007 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.magentlab.com%2Fapi%2Fcalc%2Fgrogan&method=POST
const res = await pay("https://api.magentlab.com/api/calc/grogan", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "items": [
      {
        "nt_probnp_ng_l": 1500,
        "troponin_t_ng_ml": 0.02
      },
      {
        "nt_probnp_ng_l": 1500,
        "troponin_t_ng_ml": 0.02
      }
    ]
  }),
});
console.log(res.status, await res.text());
Python: pay and call
# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.007 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.007"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://api.magentlab.com/api/calc/grogan",
        json={
            "items": [
                {
                    "nt_probnp_ng_l": 1500,
                    "troponin_t_ng_ml": 0.02,
                },
                {
                    "nt_probnp_ng_l": 1500,
                    "troponin_t_ng_ml": 0.02,
                },
            ],
        },
    )
    print(res.status_code, res.text)

Security scan

1 finding

  • Charges more than its listed price in payment
    Listed at $0.005, charges $0.007

Recent checks

WhenResultHTTPTimePrice
4 h agoTimed out---
9 h agoTimed out---
13 h agoPassed402135 ms$0.007
18 h agoPassed402152 ms$0.007
23 h agoPassed402143 ms$0.007
Show 10 older checks
28 h agoPassed402234 ms$0.007
32 h agoPassed402298 ms$0.007
37 h agoPassed402146 ms$0.007
41 h agoPassed402142 ms$0.007
45 h agoPassed402141 ms$0.007
2 days agoPassed402138 ms$0.007
2 days agoPassed402137 ms$0.007
2 days agoPassed402266 ms$0.007
3 days agoPassed402268 ms$0.007
3 days agoPassed402145 ms$0.007

History

11 Oct 2026Price changed from $0.005 to $0.007