Calc Cdc Imm

{
  "age_months": 4,
  "citation": {
    "authors": "Issa AN, Wodi AP, Moser CA, Cineas S",
    "doi": "10.15585/mmwr.mm7402a2",
    "id": "cdc-acip-catch-up-schedule",
    "pmid": "39819853",
    "source": "MMWR Morb Mortal Wkly Rep. 2025;74(2):26-29",
    "title": "Advisory Committee on Immunization Practices Recommended Immunization Schedule for Children and Adolescents Aged 18 Years or Younger — United States, 2025"
  },
  "components": [
    {
      "factor": "age_met",
      "met": true,
      "value": 0
    },
    {
      "factor": "interval_met",
      "met": true,
      "value": 4
    }
  ],
  "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.",
  "dose_number": 2,
  "eligible": true,
  "formula": "cdc_imm",
  "formula_expression": "ACIP 2025 child/adolescent catch-up Table 2: eligible if age_months >= minimum_age_months and (dose 1 has no printed interval, or weeks_since_previous_dose >= minimum_interval_weeks). HepB dose 1 birth = 0 months; HepB dose 2 = 4 weeks. MMR dose 1 = 12 months; MMR dose 2 = 4 weeks. HepA and varicella dose 1 = 12 months. DTaP/IPV dose 1 = 6 weeks as 1.5 months; DTaP doses 2-3 and IPV dose 2 = 4 weeks (DTaP only when age_months < 84). Tdap dose 1 = 84 months. Not Table 1 routine bars. Not Hib, PCV, rotavirus, HepB dose 3, 6-month intervals, the 4-day grace period, or live-virus spacing beyond this table. magent does not immunize",
  "minimum_age_months": 0,
  "minimum_interval_weeks": 4,
  "vaccine": "hepb",
  "weeks_since_previous_dose": 4
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://api.magentlab.com/api/calc/cdc_imm?age_months=4&dose_number=2&vaccine=hepb&weeks_since_previous_dose=4'

# 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/cdc_imm?age_months=4&dose_number=2&vaccine=hepb&weeks_since_previous_dose=4' \
  | 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%2Fcdc_imm
const res = await pay("https://api.magentlab.com/api/calc/cdc_imm?age_months=4&dose_number=2&vaccine=hepb&weeks_since_previous_dose=4");
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/cdc_imm?age_months=4&dose_number=2&vaccine=hepb&weeks_since_previous_dose=4")
    print(res.status_code, res.text)