Calc Kocher

{
  "count": 2,
  "items": [
    {
      "citation": {
        "authors": "Kocher MS, Zurakowski D, Kasser JR",
        "doi": "10.2106/00004623-199912000-00002",
        "id": "kocher-1999",
        "pmid": "10608376",
        "source": "J Bone Joint Surg Am. 1999;81(12):1662-1670",
        "title": "Differentiating between septic arthritis and transient synovitis of the hip in children: an evidence-based clinical prediction algorithm"
      },
      "components": [
        {
          "factor": "history_of_fever",
          "points": 0,
          "present": false
        },
        {
          "factor": "non_weight_bearing",
          "points": 0,
          "present": false
        },
        {
          "factor": "esr_ge_40",
          "points": 0,
          "present": false,
          "value": 20
        },
        {
          "factor": "wbc_gt_12000",
          "points": 0,
          "present": false,
          "value": 8000
        }
      ],
      "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.",
      "esr_mm_h": 20,
      "formula": "kocher",
      "formula_expression": "Kocher = history_of_fever + non_weight_bearing + (esr_mm_h >= 40) + (wbc_ul > 12000); each 1; max 4; predicted probability 0:<0.2% 1:3.0% 2:40.0% 3:93.1% 4:99.6%",
      "max_score": 4,
      "predicted_probability": "<0.2%",
      "score": 0,
      "wbc_ul": 8000
    },
    {
      "citation": {
        "authors": "Kocher MS, Zurakowski D, Kasser JR",
        "doi": "10.2106/00004623-199912000-00002",
        "id": "kocher-1999",
        "pmid": "10608376",
        "source": "J Bone Joint Surg Am. 1999;81(12):1662-1670",
        "title": "Differentiating between septic arthritis and transient synovitis of the hip in children: an evidence-based clinical prediction algorithm"
      },
      "components": [
        {
          "factor": "history_of_fever",
          "points": 0,
          "present": false
        },
        {
          "factor": "non_weight_bearing",
          "points": 0,
          "present": false
        },
        {
          "factor": "esr_ge_40",
          "points": 0,
          "present": false,
          "value": 20
        },
        {
          "factor": "wbc_gt_12000",
          "points": 0,
          "present": false,
          "value": 8000
        }
      ],
      "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.",
      "esr_mm_h": 20,
      "formula": "kocher",
      "formula_expression": "Kocher = history_of_fever + non_weight_bearing + (esr_mm_h >= 40) + (wbc_ul > 12000); each 1; max 4; predicted probability 0:<0.2% 1:3.0% 2:40.0% 3:93.1% 4:99.6%",
      "max_score": 4,
      "predicted_probability": "<0.2%",
      "score": 0,
      "wbc_ul": 8000
    }
  ],
  "path": "/api/calc/kocher"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.magentlab.com/api/calc/kocher' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"esr_mm_h":20,"history_of_fever":false,"non_weight_bearing":false,"wbc_k_ul":8,"wbc_ul":8000},{"esr_mm_h":20,"history_of_fever":false,"non_weight_bearing":false,"wbc_k_ul":8,"wbc_ul":8000}]}'

# 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/kocher' \
  -H 'content-type: application/json' \
  --data-raw '{"items":[{"esr_mm_h":20,"history_of_fever":false,"non_weight_bearing":false,"wbc_k_ul":8,"wbc_ul":8000},{"esr_mm_h":20,"history_of_fever":false,"non_weight_bearing":false,"wbc_k_ul":8,"wbc_ul":8000}]}' \
  | 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%2Fkocher&method=POST
const res = await pay("https://api.magentlab.com/api/calc/kocher", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "items": [
      {
        "esr_mm_h": 20,
        "history_of_fever": false,
        "non_weight_bearing": false,
        "wbc_k_ul": 8,
        "wbc_ul": 8000
      },
      {
        "esr_mm_h": 20,
        "history_of_fever": false,
        "non_weight_bearing": false,
        "wbc_k_ul": 8,
        "wbc_ul": 8000
      }
    ]
  }),
});
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/kocher",
        json={
            "items": [
                {
                    "esr_mm_h": 20,
                    "history_of_fever": False,
                    "non_weight_bearing": False,
                    "wbc_k_ul": 8,
                    "wbc_ul": 8000,
                },
                {
                    "esr_mm_h": 20,
                    "history_of_fever": False,
                    "non_weight_bearing": False,
                    "wbc_k_ul": 8,
                    "wbc_ul": 8000,
                },
            ],
        },
    )
    print(res.status_code, res.text)