Calc Periop Doac

{
  "bleed_risk": "low_to_moderate",
  "citation": {
    "authors": "Douketis JD, Spyropoulos AC, Murad MH, et al.",
    "doi": "10.1016/j.chest.2022.07.025",
    "id": "douketis-2022",
    "pmid": "35964704",
    "source": "Chest. 2022;162(5):e207-e243",
    "title": "Perioperative Management of Antithrombotic Therapy: An American College of Chest Physicians Clinical Practice Guideline"
  },
  "criteria": [
    {
      "factor": "doac",
      "met": true,
      "value": "apixaban"
    },
    {
      "factor": "high_bleed_risk",
      "met": false,
      "value": "low_to_moderate"
    },
    {
      "factor": "dabigatran",
      "met": false
    },
    {
      "factor": "dabigatran_crcl_lt_50",
      "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.",
  "doac": "apixaban",
  "formula": "periop_doac",
  "formula_expression": "Douketis 2022 PAUSE-style elective DOAC interruption (recommendations 22-25): apixaban/rivaroxaban/edoxaban hold 1 day (low_to_moderate) or 2 days (high); dabigatran CrCl>=50 same 1/2; dabigatran CrCl<50 hold 2 (low_to_moderate) or 4 (high); resume 1 day after low_to_moderate or 2 days after high; heparin_bridge always false (recommendation 26)",
  "heparin_bridge": false,
  "hold_days_before": 1,
  "resume_days_after": 1,
  "total_pre_post_days": 2
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://api.magentlab.com/api/calc/periop_doac?bleed_risk=low_to_moderate&crcl_ml_min=40&doac=apixaban'

# 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 - 'https://api.magentlab.com/api/calc/periop_doac?bleed_risk=low_to_moderate&crcl_ml_min=40&doac=apixaban' \
  | 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%2Fperiop_doac
const res = await pay("https://api.magentlab.com/api/calc/periop_doac?bleed_risk=low_to_moderate&crcl_ml_min=40&doac=apixaban");
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.get("https://api.magentlab.com/api/calc/periop_doac?bleed_risk=low_to_moderate&crcl_ml_min=40&doac=apixaban")
    print(res.status_code, res.text)