Calc Abg

{
  "count": 2,
  "items": [
    {
      "anion_gap_class": "normal",
      "anion_gap_mmol_l": 2,
      "bicarbonate_mmol_l": 18,
      "chloride_mmol_l": 115,
      "citation": {
        "authors": "Berend K, de Vries APJ, Gans ROB",
        "doi": "10.1056/NEJMra1003327",
        "id": "berend-2014-acid-base",
        "pmid": "25295502",
        "source": "N Engl J Med. 2014;371:1434-1445",
        "title": "Physiological Approach to Assessment of Acid-Base Disturbances"
      },
      "criteria": [
        {
          "factor": "acidemia",
          "met": true,
          "value": 7.28
        },
        {
          "factor": "alkalemia",
          "met": false,
          "value": 7.28
        },
        {
          "factor": "metabolic_acidosis",
          "met": true,
          "value": 18
        },
        {
          "factor": "metabolic_alkalosis",
          "met": false,
          "value": 18
        },
        {
          "factor": "respiratory_acidosis",
          "met": false,
          "value": 39
        },
        {
          "factor": "respiratory_alkalosis",
          "met": false,
          "value": 39
        },
        {
          "factor": "high_anion_gap",
          "met": false,
          "value": 2
        },
        {
          "factor": "normal_anion_gap",
          "met": true,
          "value": 2
        }
      ],
      "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.",
      "disorders": [
        "acidemia",
        "metabolic acidosis",
        "normal anion-gap acidosis",
        "additional respiratory acidosis"
      ],
      "expected_paco2_high_mm_hg": 37,
      "expected_paco2_low_mm_hg": 33,
      "expected_paco2_mm_hg": 35,
      "formula": "abg",
      "formula_expression": "Berend 2014: acidemia if pH<7.38; alkalemia if pH>7.42; metabolic acidosis if pH<7.38 and HCO3<22; metabolic alkalosis if pH>7.42 and HCO3>26; respiratory acidosis if pH<7.38 and PaCO2>42; respiratory alkalosis if pH>7.42 and PaCO2<38; anion_gap=Na-Cl-HCO3 (high if >12); albumin-corrected AG=AG+2.5*(4.0-albumin) when albumin<4.0 g/dL; metabolic acidosis expected PaCO2=1.5*HCO3+8±2; metabolic alkalosis expected PaCO2=0.7*(HCO3-24)+40±2; acute respiratory acidosis HCO3 +1 per 10 mm Hg PaCO2 above 40; chronic +4 to +5; acute respiratory alkalosis HCO3 -2 per 10 mm Hg PaCO2 below 40; chronic -4 to -5; ketoacidosis delta-delta=ΔAG-ΔHCO3; lactic delta-delta=0.6*ΔAG-ΔHCO3 (simple if -5 to 5)",
      "paco2_mm_hg": 39,
      "ph": 7.28,
      "ph_status": "acidemia",
      "primary_process": "metabolic acidosis",
      "secondary_response": "additional respiratory acidosis",
      "sodium_mmol_l": 135
    },
    {
      "anion_gap_class": "normal",
      "anion_gap_mmol_l": 2,
      "bicarbonate_mmol_l": 18,
      "chloride_mmol_l": 115,
      "citation": {
        "authors": "Berend K, de Vries APJ, Gans ROB",
        "doi": "10.1056/NEJMra1003327",
        "id": "berend-2014-acid-base",
        "pmid": "25295502",
        "source": "N Engl J Med. 2014;371:1434-1445",
        "title": "Physiological Approach to Assessment of Acid-Base Disturbances"
      },
      "criteria": [
        {
          "factor": "acidemia",
          "met": true,
          "value": 7.28
        },
        {
          "factor": "alkalemia",
          "met": false,
          "value": 7.28
        },
        {
          "factor": "metabolic_acidosis",
          "met": true,
          "value": 18
        },
        {
          "factor": "metabolic_alkalosis",
          "met": false,
          "value": 18
        },
        {
          "factor": "respiratory_acidosis",
          "met": false,
          "value": 39
        },
        {
          "factor": "respiratory_alkalosis",
          "met": false,
          "value": 39
        },
        {
          "factor": "high_anion_gap",
          "met": false,
          "value": 2
        },
        {
          "factor": "normal_anion_gap",
          "met": true,
          "value": 2
        }
      ],
      "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.",
      "disorders": [
        "acidemia",
        "metabolic acidosis",
        "normal anion-gap acidosis",
        "additional respiratory acidosis"
      ],
      "expected_paco2_high_mm_hg": 37,
      "expected_paco2_low_mm_hg": 33,
      "expected_paco2_mm_hg": 35,
      "formula": "abg",
      "formula_expression": "Berend 2014: acidemia if pH<7.38; alkalemia if pH>7.42; metabolic acidosis if pH<7.38 and HCO3<22; metabolic alkalosis if pH>7.42 and HCO3>26; respiratory acidosis if pH<7.38 and PaCO2>42; respiratory alkalosis if pH>7.42 and PaCO2<38; anion_gap=Na-Cl-HCO3 (high if >12); albumin-corrected AG=AG+2.5*(4.0-albumin) when albumin<4.0 g/dL; metabolic acidosis expected PaCO2=1.5*HCO3+8±2; metabolic alkalosis expected PaCO2=0.7*(HCO3-24)+40±2; acute respiratory acidosis HCO3 +1 per 10 mm Hg PaCO2 above 40; chronic +4 to +5; acute respiratory alkalosis HCO3 -2 per 10 mm Hg PaCO2 below 40; chronic -4 to -5; ketoacidosis delta-delta=ΔAG-ΔHCO3; lactic delta-delta=0.6*ΔAG-ΔHCO3 (simple if -5 to 5)",
      "paco2_mm_hg": 39,
      "ph": 7.28,
      "ph_status": "acidemia",
      "primary_process": "metabolic acidosis",
      "secondary_response": "additional respiratory acidosis",
      "sodium_mmol_l": 135
    }
  ],
  "path": "/api/calc/abg"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.magentlab.com/api/calc/abg' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"albumin_g_dl":4,"bicarbonate_mmol_l":18,"chloride_mmol_l":115,"lactate_mmol_l":2,"paco2_mm_hg":39,"ph":7.28,"sodium_mmol_l":135},{"albumin_g_dl":4,"bicarbonate_mmol_l":18,"chloride_mmol_l":115,"lactate_mmol_l":2,"paco2_mm_hg":39,"ph":7.28,"sodium_mmol_l":135}]}'

# 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/abg' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"albumin_g_dl":4,"bicarbonate_mmol_l":18,"chloride_mmol_l":115,"lactate_mmol_l":2,"paco2_mm_hg":39,"ph":7.28,"sodium_mmol_l":135},{"albumin_g_dl":4,"bicarbonate_mmol_l":18,"chloride_mmol_l":115,"lactate_mmol_l":2,"paco2_mm_hg":39,"ph":7.28,"sodium_mmol_l":135}]}' \
  | 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%2Fabg&method=POST
const res = await pay("https://api.magentlab.com/api/calc/abg", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "items": [
      {
        "albumin_g_dl": 4,
        "bicarbonate_mmol_l": 18,
        "chloride_mmol_l": 115,
        "lactate_mmol_l": 2,
        "paco2_mm_hg": 39,
        "ph": 7.28,
        "sodium_mmol_l": 135
      },
      {
        "albumin_g_dl": 4,
        "bicarbonate_mmol_l": 18,
        "chloride_mmol_l": 115,
        "lactate_mmol_l": 2,
        "paco2_mm_hg": 39,
        "ph": 7.28,
        "sodium_mmol_l": 135
      }
    ]
  }),
});
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/abg",
        json={
            "items": [
                {
                    "albumin_g_dl": 4,
                    "bicarbonate_mmol_l": 18,
                    "chloride_mmol_l": 115,
                    "lactate_mmol_l": 2,
                    "paco2_mm_hg": 39,
                    "ph": 7.28,
                    "sodium_mmol_l": 135,
                },
                {
                    "albumin_g_dl": 4,
                    "bicarbonate_mmol_l": 18,
                    "chloride_mmol_l": 115,
                    "lactate_mmol_l": 2,
                    "paco2_mm_hg": 39,
                    "ph": 7.28,
                    "sodium_mmol_l": 135,
                },
            ],
        },
    )
    print(res.status_code, res.text)