Calc Fli

{
  "count": 2,
  "items": [
    {
      "bedogni_band": "rule_out",
      "bmi_kg_m2": 22,
      "citation": {
        "authors": "Bedogni G, Bellentani S, Miglioli L, Masutti F, Passalacqua M, Castiglione A, Tiribelli C",
        "doi": "10.1186/1471-230X-6-33",
        "id": "bedogni-2006",
        "pmid": "17081293",
        "source": "BMC Gastroenterol. 2006;6:33",
        "title": "The Fatty Liver Index: a simple and accurate predictor of hepatic steatosis in the general population"
      },
      "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.",
      "fli": 6.6,
      "formula": "fli",
      "formula_expression": "L = 0.953 * loge(triglycerides_mg_dl) + 0.139 * bmi_kg_m2 + 0.718 * loge(ggt_u_l) + 0.053 * waist_cm - 15.745; FLI = (e^L / (1 + e^L)) * 100",
      "ggt_u_l": 20,
      "l": -2.65,
      "triglycerides_mg_dl": 80,
      "waist_cm": 70
    },
    {
      "bedogni_band": "rule_out",
      "bmi_kg_m2": 22,
      "citation": {
        "authors": "Bedogni G, Bellentani S, Miglioli L, Masutti F, Passalacqua M, Castiglione A, Tiribelli C",
        "doi": "10.1186/1471-230X-6-33",
        "id": "bedogni-2006",
        "pmid": "17081293",
        "source": "BMC Gastroenterol. 2006;6:33",
        "title": "The Fatty Liver Index: a simple and accurate predictor of hepatic steatosis in the general population"
      },
      "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.",
      "fli": 6.6,
      "formula": "fli",
      "formula_expression": "L = 0.953 * loge(triglycerides_mg_dl) + 0.139 * bmi_kg_m2 + 0.718 * loge(ggt_u_l) + 0.053 * waist_cm - 15.745; FLI = (e^L / (1 + e^L)) * 100",
      "ggt_u_l": 20,
      "l": -2.65,
      "triglycerides_mg_dl": 80,
      "waist_cm": 70
    }
  ],
  "path": "/api/calc/fli"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.magentlab.com/api/calc/fli' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"bmi_kg_m2":22,"ggt_u_l":20,"triglycerides_mg_dl":80,"triglycerides_mmol_l":0.9,"waist_cm":70},{"bmi_kg_m2":22,"ggt_u_l":20,"triglycerides_mg_dl":80,"triglycerides_mmol_l":0.9,"waist_cm":70}]}'

# 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/fli' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"bmi_kg_m2":22,"ggt_u_l":20,"triglycerides_mg_dl":80,"triglycerides_mmol_l":0.9,"waist_cm":70},{"bmi_kg_m2":22,"ggt_u_l":20,"triglycerides_mg_dl":80,"triglycerides_mmol_l":0.9,"waist_cm":70}]}' \
  | 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 $0.005 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.005" });
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 $0.005 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.magentlab.com%2Fapi%2Fcalc%2Ffli&method=POST
const res = await pay("https://api.magentlab.com/api/calc/fli", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "items": [
      {
        "bmi_kg_m2": 22,
        "ggt_u_l": 20,
        "triglycerides_mg_dl": 80,
        "triglycerides_mmol_l": 0.9,
        "waist_cm": 70
      },
      {
        "bmi_kg_m2": 22,
        "ggt_u_l": 20,
        "triglycerides_mg_dl": 80,
        "triglycerides_mmol_l": 0.9,
        "waist_cm": 70
      }
    ]
  }),
});
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 $0.005 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.005"})
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/fli",
        json={
            "items": [
                {
                    "bmi_kg_m2": 22,
                    "ggt_u_l": 20,
                    "triglycerides_mg_dl": 80,
                    "triglycerides_mmol_l": 0.9,
                    "waist_cm": 70,
                },
                {
                    "bmi_kg_m2": 22,
                    "ggt_u_l": 20,
                    "triglycerides_mg_dl": 80,
                    "triglycerides_mmol_l": 0.9,
                    "waist_cm": 70,
                },
            ],
        },
    )
    print(res.status_code, res.text)