Calc Vexus

{
  "count": 2,
  "items": [
    {
      "citation": {
        "authors": "Beaubien-Souligny W, Rola P, Haycock K, Bouchard J, Lamarche Y, Spiegel R, Denault AY",
        "doi": "10.1186/s13089-020-00163-w",
        "id": "beaubien-souligny-2020",
        "pmid": "32270297",
        "source": "Ultrasound J. 2020;12(1):16",
        "title": "Quantifying systemic congestion with Point-Of-Care ultrasound: development of the venous excess ultrasound grading system"
      },
      "components": [
        {
          "factor": "ivc_dilated",
          "met": false
        },
        {
          "factor": "hepatic_severe",
          "met": false,
          "value": "normal"
        },
        {
          "factor": "portal_severe",
          "met": false,
          "value": "normal"
        },
        {
          "factor": "renal_severe",
          "met": false,
          "value": "normal"
        },
        {
          "factor": "grade_0",
          "met": true
        },
        {
          "factor": "grade_1",
          "met": false
        },
        {
          "factor": "grade_2",
          "met": false
        },
        {
          "factor": "grade_3",
          "met": 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.",
      "formula": "vexus",
      "formula_expression": "VExUS C grade 0 if ivc_dilated is false (regardless of Doppler); else 1 if zero of hepatic/portal/renal are severe; 2 if exactly one is severe; 3 if two or more are severe (Beaubien-Souligny 2020 prototype C). Hepatic: normal (triphasic S>D toward liver), mild (S<D toward liver), severe (S reversed toward heart). Portal: mild pulsatility 30 to <50%, severe ≥50%. Renal: mild discontinuous S and D, severe only D. IVC dilated iff maximal diameter ≥2 cm as assigned. Not prototypes A, B, D, E",
      "hepatic": "normal",
      "ivc_dilated": false,
      "portal": "normal",
      "renal": "normal",
      "severe_doppler_count": 0,
      "vexus_grade": 0
    },
    {
      "citation": {
        "authors": "Beaubien-Souligny W, Rola P, Haycock K, Bouchard J, Lamarche Y, Spiegel R, Denault AY",
        "doi": "10.1186/s13089-020-00163-w",
        "id": "beaubien-souligny-2020",
        "pmid": "32270297",
        "source": "Ultrasound J. 2020;12(1):16",
        "title": "Quantifying systemic congestion with Point-Of-Care ultrasound: development of the venous excess ultrasound grading system"
      },
      "components": [
        {
          "factor": "ivc_dilated",
          "met": false
        },
        {
          "factor": "hepatic_severe",
          "met": false,
          "value": "normal"
        },
        {
          "factor": "portal_severe",
          "met": false,
          "value": "normal"
        },
        {
          "factor": "renal_severe",
          "met": false,
          "value": "normal"
        },
        {
          "factor": "grade_0",
          "met": true
        },
        {
          "factor": "grade_1",
          "met": false
        },
        {
          "factor": "grade_2",
          "met": false
        },
        {
          "factor": "grade_3",
          "met": 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.",
      "formula": "vexus",
      "formula_expression": "VExUS C grade 0 if ivc_dilated is false (regardless of Doppler); else 1 if zero of hepatic/portal/renal are severe; 2 if exactly one is severe; 3 if two or more are severe (Beaubien-Souligny 2020 prototype C). Hepatic: normal (triphasic S>D toward liver), mild (S<D toward liver), severe (S reversed toward heart). Portal: mild pulsatility 30 to <50%, severe ≥50%. Renal: mild discontinuous S and D, severe only D. IVC dilated iff maximal diameter ≥2 cm as assigned. Not prototypes A, B, D, E",
      "hepatic": "normal",
      "ivc_dilated": false,
      "portal": "normal",
      "renal": "normal",
      "severe_doppler_count": 0,
      "vexus_grade": 0
    }
  ],
  "path": "/api/calc/vexus"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.magentlab.com/api/calc/vexus' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"hepatic":"normal","ivc_dilated":false,"portal":"normal","renal":"normal"},{"hepatic":"normal","ivc_dilated":false,"portal":"normal","renal":"normal"}]}'

# 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/vexus' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"hepatic":"normal","ivc_dilated":false,"portal":"normal","renal":"normal"},{"hepatic":"normal","ivc_dilated":false,"portal":"normal","renal":"normal"}]}' \
  | 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%2Fvexus&method=POST
const res = await pay("https://api.magentlab.com/api/calc/vexus", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "items": [
      {
        "hepatic": "normal",
        "ivc_dilated": false,
        "portal": "normal",
        "renal": "normal"
      },
      {
        "hepatic": "normal",
        "ivc_dilated": false,
        "portal": "normal",
        "renal": "normal"
      }
    ]
  }),
});
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/vexus",
        json={
            "items": [
                {
                    "hepatic": "normal",
                    "ivc_dilated": False,
                    "portal": "normal",
                    "renal": "normal",
                },
                {
                    "hepatic": "normal",
                    "ivc_dilated": False,
                    "portal": "normal",
                    "renal": "normal",
                },
            ],
        },
    )
    print(res.status_code, res.text)