ToolVet
69trust / 100

Calc Meld 3

by magent in Other

x402 APIFailing, checked 3 h ago

Kim 2021 MELD 3.0 from sex, bilirubin, INR, creatinine, sodium, albumin, and dialysis. meld_3 = round(1.33*(female) + 4.56*ln(bilirubin) + 0.82*(137-Na) - 0.24*(137-Na)*ln(bilirubin) + 9.09*ln(INR) + 11.14*ln(creatinine) + 1.85*(3.5-albumin) - 1.83*(3.5-albumin)*ln(creatinine) + 6). Creatinine 1.0-3.0 (dialysis 3.0); bilirubin and INR floor 1.0; sodium 125-137; albumin 1.5-3.5. Not original MELD or MELD-Na. Not a transplant listing or allocation order.

POST
https://api.magentlab.com/api/calc/meld_3
Price
$0.007
per call in USDC
Uptime
97.0%
last 30 days
Response time
152 ms
539 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/meld_3

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/meld_3
content-type: application/json

{
  "items": [
    {
      "albumin_g_dl": 3.5,
      "albumin_g_l": 35,
      "bilirubin_mg_dl": 1,
      "bilirubin_umol_l": 17.1,
      "creatinine_mg_dl": 1,
      "creatinine_umol_l": 88.42,
      "dialysis": false,
      "inr": 1,
      "sex": "male",
      "sodium_mmol_l": 137
    },
    {
      "albumin_g_dl": 3.5,
      "albumin_g_l": 35,
      "bilirubin_mg_dl": 1,
      "bilirubin_umol_l": 17.1,
      "creatinine_mg_dl": 1,
      "creatinine_umol_l": 88.42,
      "dialysis": false,
      "inr": 1,
      "sex": "male",
      "sodium_mmol_l": 137
    }
  ]
}

Parameters

ParameterTypeRequiredDescription
itemsarray of objectYes

Example response

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

Example response, 60 lines
{
  "count": 2,
  "items": [
    {
      "albumin_g_dl": 3.5,
      "albumin_used_g_dl": 3.5,
      "bilirubin_mg_dl": 1,
      "bilirubin_used_mg_dl": 1,
      "citation": {
        "authors": "Kim WR, Mannalithara A, Heimbach JK, Kamath PS, Asrani SK, Biggins SW, et al.",
        "doi": "10.1053/j.gastro.2021.08.050",
        "id": "kim-2021",
        "pmid": "34454066",
        "source": "Gastroenterology. 2021;161(6):1887-1895.e4",
        "title": "MELD 3.0: The Model for End-Stage Liver Disease Updated for the Modern Era"
      },
      "creatinine_mg_dl": 1,
      "creatinine_used_mg_dl": 1,
      "dialysis": false,
      "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.",
      "female": false,
      "formula": "kim_meld_3_2021",
      "formula_expression": "meld_3 = round(1.33*(female) + 4.56*ln(bilirubin) + 0.82*(137 - Na) - 0.24*(137 - Na)*ln(bilirubin) + 9.09*ln(INR) + 11.14*ln(creatinine) + 1.85*(3.5 - albumin) - 1.83*(3.5 - albumin)*ln(creatinine) + 6)",
      "inr": 1,
      "inr_used": 1,
      "meld_3": 6,
      "sex": "male",
      "sodium_mmol_l": 137,
      "sodium_used_mmol_l": 137
    },
    {
      "albumin_g_dl": 3.5,
      "albumin_used_g_dl": 3.5,
      "bilirubin_mg_dl": 1,
      "bilirubin_used_mg_dl": 1,
      "citation": {
        "authors": "Kim WR, Mannalithara A, Heimbach JK, Kamath PS, Asrani SK, Biggins SW, et al.",
        "doi": "10.1053/j.gastro.2021.08.050",
        "id": "kim-2021",
        "pmid": "34454066",
        "source": "Gastroenterology. 2021;161(6):1887-1895.e4",
        "title": "MELD 3.0: The Model for End-Stage Liver Disease Updated for the Modern Era"
      },
      "creatinine_mg_dl": 1,
      "creatinine_used_mg_dl": 1,
      "dialysis": false,
      "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.",
      "female": false,
      "formula": "kim_meld_3_2021",
      "formula_expression": "meld_3 = round(1.33*(female) + 4.56*ln(bilirubin) + 0.82*(137 - Na) - 0.24*(137 - Na)*ln(bilirubin) + 9.09*ln(INR) + 11.14*ln(creatinine) + 1.85*(3.5 - albumin) - 1.83*(3.5 - albumin)*ln(creatinine) + 6)",
      "inr": 1,
      "inr_used": 1,
      "meld_3": 6,
      "sex": "male",
      "sodium_mmol_l": 137,
      "sodium_used_mmol_l": 137
    }
  ],
  "path": "/api/calc/meld_3"
}

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/meld_3' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"albumin_g_dl":3.5,"albumin_g_l":35,"bilirubin_mg_dl":1,"bilirubin_umol_l":17.1,"creatinine_mg_dl":1,"creatinine_umol_l":88.42,"dialysis":false,"inr":1,"sex":"male","sodium_mmol_l":137},{"albumin_g_dl":3.5,"albumin_g_l":35,"bilirubin_mg_dl":1,"bilirubin_umol_l":17.1,"creatinine_mg_dl":1,"creatinine_umol_l":88.42,"dialysis":false,"inr":1,"sex":"male","sodium_mmol_l":137}]}'

# 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/meld_3' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"albumin_g_dl":3.5,"albumin_g_l":35,"bilirubin_mg_dl":1,"bilirubin_umol_l":17.1,"creatinine_mg_dl":1,"creatinine_umol_l":88.42,"dialysis":false,"inr":1,"sex":"male","sodium_mmol_l":137},{"albumin_g_dl":3.5,"albumin_g_l":35,"bilirubin_mg_dl":1,"bilirubin_umol_l":17.1,"creatinine_mg_dl":1,"creatinine_umol_l":88.42,"dialysis":false,"inr":1,"sex":"male","sodium_mmol_l":137}]}' \
  | 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%2Fmeld_3&method=POST
const res = await pay("https://api.magentlab.com/api/calc/meld_3", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "items": [
      {
        "albumin_g_dl": 3.5,
        "albumin_g_l": 35,
        "bilirubin_mg_dl": 1,
        "bilirubin_umol_l": 17.1,
        "creatinine_mg_dl": 1,
        "creatinine_umol_l": 88.42,
        "dialysis": false,
        "inr": 1,
        "sex": "male",
        "sodium_mmol_l": 137
      },
      {
        "albumin_g_dl": 3.5,
        "albumin_g_l": 35,
        "bilirubin_mg_dl": 1,
        "bilirubin_umol_l": 17.1,
        "creatinine_mg_dl": 1,
        "creatinine_umol_l": 88.42,
        "dialysis": false,
        "inr": 1,
        "sex": "male",
        "sodium_mmol_l": 137
      }
    ]
  }),
});
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/meld_3",
        json={
            "items": [
                {
                    "albumin_g_dl": 3.5,
                    "albumin_g_l": 35,
                    "bilirubin_mg_dl": 1,
                    "bilirubin_umol_l": 17.1,
                    "creatinine_mg_dl": 1,
                    "creatinine_umol_l": 88.42,
                    "dialysis": False,
                    "inr": 1,
                    "sex": "male",
                    "sodium_mmol_l": 137,
                },
                {
                    "albumin_g_dl": 3.5,
                    "albumin_g_l": 35,
                    "bilirubin_mg_dl": 1,
                    "bilirubin_umol_l": 17.1,
                    "creatinine_mg_dl": 1,
                    "creatinine_umol_l": 88.42,
                    "dialysis": False,
                    "inr": 1,
                    "sex": "male",
                    "sodium_mmol_l": 137,
                },
            ],
        },
    )
    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 agoPassed402183 ms$0.007
13 h agoPassed402214 ms$0.007
18 h agoPassed402151 ms$0.007
22 h agoPassed402145 ms$0.007
Show 10 older checks
27 h agoPassed402149 ms$0.007
31 h agoPassed402139 ms$0.007
36 h agoPassed402152 ms$0.007
40 h agoPassed402140 ms$0.007
44 h agoPassed402406 ms$0.007
2 days agoPassed402147 ms$0.007
2 days agoPassed402160 ms$0.007
2 days agoPassed402166 ms$0.007
3 days agoPassed402368 ms$0.007
3 days agoPassed402304 ms$0.007

History

11 Oct 2026Price changed from $0.005 to $0.007