Medicamento Info Pago

{
  "aviso": "Información del prospecto de EE. UU.; no sustituye el consejo de un profesional sanitario.",
  "busqueda": "ibuprofen",
  "fuente": "openFDA (prospectos de la FDA de EE. UU., CC0)",
  "resultados": [
    {
      "advertencias": "Warnings Allergy alert: Ibuprofen may cause a severe allergic reaction, especially in people allergic to aspirin. Symptoms may include: rash facial swelling asthma (wheezing) hives skin reddening shock blisters If an allergic reaction occurs, stop use and seek medical help right away. Stomach bleedi…",
      "contraindicaciones": "Do not use if you have ever had an allergic reaction to any other pain reliever/fever reducer right before or after heart surgery",
      "dosis": "Directions do not take more than directed the smallest effective dose should be used adults and children 12 years and over: take 1 tablet every 4 to 6 hours while symptoms persist if pain or fever does not respond to 1 tablet, 2 tablets may be used do not exceed 6 tablets in 24 hours, unless directe…",
      "embarazo_lactancia": "If pregnant or breast-feeding, ask a health professional before use. It is especially important not to use ibuprofen at 20 weeks or later in pregnancy unless definitely directed to do so by a doctor because it may cause problems in the unborn child or complications during delivery.",
      "fabricante": [
        "CVS Pharmacy"
      ],
      "indicaciones": "Uses temporarily relieves minor aches and pains due to: headache toothache backache menstrual cramps the common cold muscular aches minor pain of arthritis temporarily reduces fever",
      "interacciones": null,
      "marcas": [
        "Ibuprofen Dye Free"
      ],
      "principio_activo": [
        "IBUPROFEN"
      ],
      "tipo": [
        "HUMAN OTC DRUG"
      ],
      "version_prospecto": "20260429",
      "via": [
        "ORAL"
      ]
    }
  ]
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.vextorium.com/medicamento-info-pago' \
  -H 'content-type: application/json' \
  --data-raw '{"nombre":"ibuprofen"}'

# 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.vextorium.com/medicamento-info-pago' \
  -H 'content-type: application/json' \
  --data-raw '{"nombre":"ibuprofen"}' \
  | 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 $0.003 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.003" });
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 $0.003 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.vextorium.com%2Fmedicamento-info-pago&method=POST
const res = await pay("https://api.vextorium.com/medicamento-info-pago", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "nombre": "ibuprofen"
  }),
});
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 $0.003 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.003"})
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.vextorium.com/medicamento-info-pago",
        json={
            "nombre": "ibuprofen",
        },
    )
    print(res.status_code, res.text)