ToolVet
69trust / 100

Calc Nrpe

by magent in Other

x402 APIFailing, checked 3 h ago

Rao 2021 natriuretic response prediction equation from caller-assigned eGFR and BSA, serum and urine creatinine, and urine sodium on a spot sample ~2 h after IV loop diuretic. Na_output_mmol = eGFR*(BSA/1.73)*(SerumCr/UrineCr)*60*3.25*(UrineNa/1000). Poor <50 mmol; suboptimal <100 mmol (includes poor); excellent >150 mmol. magent does not compute eGFR or BSA and does not order a diuretic.

POST
https://api.magentlab.com/api/calc/nrpe
Price
$0.007
per call in USDC
Uptime
97.0%
last 30 days
Response time
149 ms
468 ms slowest 5%
Last check
Failed
3 h ago, next any minute now

Run a free test callHow to call it

Reliability

All checks passedSome failedAll failedNot checked

Latest check failed 3 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/nrpe

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/nrpe
content-type: application/json

{
  "items": [
    {
      "bsa_m2": 1.73,
      "creatinine_mg_dl": 1,
      "creatinine_umol_l": 88.42,
      "egfr_ml_min_1_73m2": 80,
      "urine_creatinine_mg_dl": 25,
      "urine_creatinine_umol_l": 2210.5,
      "urine_sodium_mmol_l": 90
    },
    {
      "bsa_m2": 1.73,
      "creatinine_mg_dl": 1,
      "creatinine_umol_l": 88.42,
      "egfr_ml_min_1_73m2": 80,
      "urine_creatinine_mg_dl": 25,
      "urine_creatinine_umol_l": 2210.5,
      "urine_sodium_mmol_l": 90
    }
  ]
}

Parameters

ParameterTypeRequiredDescription
itemsarray of objectYes

Example response

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

Example response, 52 lines
{
  "count": 2,
  "items": [
    {
      "bsa_m2": 1.73,
      "citation": {
        "authors": "Rao VS, Ivey-Miranda JB, Cox ZL, et al.",
        "doi": "10.1016/j.jacc.2020.12.022",
        "id": "rao-2021",
        "pmid": "33573739",
        "source": "J Am Coll Cardiol. 2021;77(6):695-708",
        "title": "Natriuretic Equation to Predict Loop Diuretic Response in Patients With Heart Failure"
      },
      "creatinine_mg_dl": 1,
      "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.",
      "egfr_ml_min_1_73m2": 80,
      "excellent_response": false,
      "formula": "nrpe",
      "formula_expression": "na_output_mmol = egfr_ml_min_1_73m2 * (bsa_m2 / 1.73) * (creatinine_mg_dl / urine_creatinine_mg_dl) * 60 * 3.25 * (urine_sodium_mmol_l / 1000); urine_output_ml = egfr_ml_min_1_73m2 * (bsa_m2 / 1.73) * (creatinine_mg_dl / urine_creatinine_mg_dl) * 60 * 3.25",
      "na_output_mmol": 56.2,
      "poor_response": false,
      "suboptimal_response": true,
      "urine_creatinine_mg_dl": 25,
      "urine_output_ml": 624,
      "urine_sodium_mmol_l": 90
    },
    {
      "bsa_m2": 1.73,
      "citation": {
        "authors": "Rao VS, Ivey-Miranda JB, Cox ZL, et al.",
        "doi": "10.1016/j.jacc.2020.12.022",
        "id": "rao-2021",
        "pmid": "33573739",
        "source": "J Am Coll Cardiol. 2021;77(6):695-708",
        "title": "Natriuretic Equation to Predict Loop Diuretic Response in Patients With Heart Failure"
      },
      "creatinine_mg_dl": 1,
      "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.",
      "egfr_ml_min_1_73m2": 80,
      "excellent_response": false,
      "formula": "nrpe",
      "formula_expression": "na_output_mmol = egfr_ml_min_1_73m2 * (bsa_m2 / 1.73) * (creatinine_mg_dl / urine_creatinine_mg_dl) * 60 * 3.25 * (urine_sodium_mmol_l / 1000); urine_output_ml = egfr_ml_min_1_73m2 * (bsa_m2 / 1.73) * (creatinine_mg_dl / urine_creatinine_mg_dl) * 60 * 3.25",
      "na_output_mmol": 56.2,
      "poor_response": false,
      "suboptimal_response": true,
      "urine_creatinine_mg_dl": 25,
      "urine_output_ml": 624,
      "urine_sodium_mmol_l": 90
    }
  ],
  "path": "/api/calc/nrpe"
}

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/nrpe' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"bsa_m2":1.73,"creatinine_mg_dl":1,"creatinine_umol_l":88.42,"egfr_ml_min_1_73m2":80,"urine_creatinine_mg_dl":25,"urine_creatinine_umol_l":2210.5,"urine_sodium_mmol_l":90},{"bsa_m2":1.73,"creatinine_mg_dl":1,"creatinine_umol_l":88.42,"egfr_ml_min_1_73m2":80,"urine_creatinine_mg_dl":25,"urine_creatinine_umol_l":2210.5,"urine_sodium_mmol_l":90}]}'

# 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/nrpe' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"bsa_m2":1.73,"creatinine_mg_dl":1,"creatinine_umol_l":88.42,"egfr_ml_min_1_73m2":80,"urine_creatinine_mg_dl":25,"urine_creatinine_umol_l":2210.5,"urine_sodium_mmol_l":90},{"bsa_m2":1.73,"creatinine_mg_dl":1,"creatinine_umol_l":88.42,"egfr_ml_min_1_73m2":80,"urine_creatinine_mg_dl":25,"urine_creatinine_umol_l":2210.5,"urine_sodium_mmol_l":90}]}' \
  | 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%2Fnrpe&method=POST
const res = await pay("https://api.magentlab.com/api/calc/nrpe", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "items": [
      {
        "bsa_m2": 1.73,
        "creatinine_mg_dl": 1,
        "creatinine_umol_l": 88.42,
        "egfr_ml_min_1_73m2": 80,
        "urine_creatinine_mg_dl": 25,
        "urine_creatinine_umol_l": 2210.5,
        "urine_sodium_mmol_l": 90
      },
      {
        "bsa_m2": 1.73,
        "creatinine_mg_dl": 1,
        "creatinine_umol_l": 88.42,
        "egfr_ml_min_1_73m2": 80,
        "urine_creatinine_mg_dl": 25,
        "urine_creatinine_umol_l": 2210.5,
        "urine_sodium_mmol_l": 90
      }
    ]
  }),
});
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/nrpe",
        json={
            "items": [
                {
                    "bsa_m2": 1.73,
                    "creatinine_mg_dl": 1,
                    "creatinine_umol_l": 88.42,
                    "egfr_ml_min_1_73m2": 80,
                    "urine_creatinine_mg_dl": 25,
                    "urine_creatinine_umol_l": 2210.5,
                    "urine_sodium_mmol_l": 90,
                },
                {
                    "bsa_m2": 1.73,
                    "creatinine_mg_dl": 1,
                    "creatinine_umol_l": 88.42,
                    "egfr_ml_min_1_73m2": 80,
                    "urine_creatinine_mg_dl": 25,
                    "urine_creatinine_umol_l": 2210.5,
                    "urine_sodium_mmol_l": 90,
                },
            ],
        },
    )
    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
3 h agoTimed out---
8 h agoPassed402144 ms$0.007
12 h agoPassed402132 ms$0.007
17 h agoPassed402304 ms$0.007
22 h agoPassed402214 ms$0.007
Show 10 older checks
26 h agoPassed402140 ms$0.007
31 h agoPassed402468 ms$0.007
35 h agoPassed402145 ms$0.007
39 h agoPassed402132 ms$0.007
43 h agoPassed402142 ms$0.007
2 days agoPassed402141 ms$0.007
2 days agoPassed402152 ms$0.007
2 days agoPassed402157 ms$0.007
3 days agoPassed402147 ms$0.007
3 days agoPassed402333 ms$0.007

History

11 Oct 2026Price changed from $0.005 to $0.007