Calc Rhmp 30

{
  "count": 2,
  "items": [
    {
      "age_years": 80,
      "albumin_g_l": 38,
      "asa_4": false,
      "citation": {
        "authors": "de Jong L, de Haan E, van Rijckevorsel VAJIM, Kuijper TM, Roukema GR",
        "doi": "10.2106/JBJS.23.01397",
        "id": "de-jong-2025",
        "pmid": "39836737",
        "source": "J Bone Joint Surg Am. 2025;107(5):459-468",
        "title": "Multidimensional Approach for Predicting 30-Day Mortality in Patients with a Hip Fracture: Development and External Validation of the Rotterdam Hip Fracture Mortality Prediction-30 Days (RHMP-30)"
      },
      "dementia": 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.",
      "estimated_mortality_percent": 3.09,
      "formula": "rhmp_30",
      "formula_expression": "logit = -2.69 - 0.0442*albumin_g_l + 0.0306*age_years - 1.012*female + 0.360*dementia - 0.0853*katz_adl + 0.856*asa_4 + 0.726*nursing_home; estimated_mortality_percent = 100 * exp(logit)/(1+exp(logit)) from the unrounded logit, 2 decimals; displayed logit 2 decimals; female is 1 if sex is female else 0; dementia, asa_4, and nursing_home are 1 if true else 0; albumin is g/L (not g/dL); Katz-ADL total 0-6 (6 = independent)",
      "katz_adl": 6,
      "logit": -3.45,
      "nursing_home": false,
      "sex": "female"
    },
    {
      "age_years": 80,
      "albumin_g_l": 38,
      "asa_4": false,
      "citation": {
        "authors": "de Jong L, de Haan E, van Rijckevorsel VAJIM, Kuijper TM, Roukema GR",
        "doi": "10.2106/JBJS.23.01397",
        "id": "de-jong-2025",
        "pmid": "39836737",
        "source": "J Bone Joint Surg Am. 2025;107(5):459-468",
        "title": "Multidimensional Approach for Predicting 30-Day Mortality in Patients with a Hip Fracture: Development and External Validation of the Rotterdam Hip Fracture Mortality Prediction-30 Days (RHMP-30)"
      },
      "dementia": 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.",
      "estimated_mortality_percent": 3.09,
      "formula": "rhmp_30",
      "formula_expression": "logit = -2.69 - 0.0442*albumin_g_l + 0.0306*age_years - 1.012*female + 0.360*dementia - 0.0853*katz_adl + 0.856*asa_4 + 0.726*nursing_home; estimated_mortality_percent = 100 * exp(logit)/(1+exp(logit)) from the unrounded logit, 2 decimals; displayed logit 2 decimals; female is 1 if sex is female else 0; dementia, asa_4, and nursing_home are 1 if true else 0; albumin is g/L (not g/dL); Katz-ADL total 0-6 (6 = independent)",
      "katz_adl": 6,
      "logit": -3.45,
      "nursing_home": false,
      "sex": "female"
    }
  ],
  "path": "/api/calc/rhmp_30"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.magentlab.com/api/calc/rhmp_30' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"age":80,"albumin_g_l":38,"asa_4":false,"dementia":false,"katz_adl":6,"nursing_home":false,"sex":"female"},{"age":80,"albumin_g_l":38,"asa_4":false,"dementia":false,"katz_adl":6,"nursing_home":false,"sex":"female"}]}'

# 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/rhmp_30' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"age":80,"albumin_g_l":38,"asa_4":false,"dementia":false,"katz_adl":6,"nursing_home":false,"sex":"female"},{"age":80,"albumin_g_l":38,"asa_4":false,"dementia":false,"katz_adl":6,"nursing_home":false,"sex":"female"}]}' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode

// 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%2Frhmp_30&method=POST
const res = await pay("https://api.magentlab.com/api/calc/rhmp_30", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "items": [
      {
        "age": 80,
        "albumin_g_l": 38,
        "asa_4": false,
        "dementia": false,
        "katz_adl": 6,
        "nursing_home": false,
        "sex": "female"
      },
      {
        "age": 80,
        "albumin_g_l": 38,
        "asa_4": false,
        "dementia": false,
        "katz_adl": 6,
        "nursing_home": false,
        "sex": "female"
      }
    ]
  }),
});
console.log(res.status, await res.text());

# 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/rhmp_30",
        json={
            "items": [
                {
                    "age": 80,
                    "albumin_g_l": 38,
                    "asa_4": False,
                    "dementia": False,
                    "katz_adl": 6,
                    "nursing_home": False,
                    "sex": "female",
                },
                {
                    "age": 80,
                    "albumin_g_l": 38,
                    "asa_4": False,
                    "dementia": False,
                    "katz_adl": 6,
                    "nursing_home": False,
                    "sex": "female",
                },
            ],
        },
    )
    print(res.status_code, res.text)