Divisas Serie Pago

{
  "cambio_pct": -3.049,
  "desde": "2026-09-02",
  "fecha": "2026-10-02",
  "fuente": "Banco Central Europeo, tipos de cambio de referencia",
  "maximo": 1.1652,
  "media": 1.1488,
  "minimo": 1.1225,
  "par": "EUR/USD",
  "serie": [
    {
      "fecha": "2026-09-02",
      "valor": 1.1578
    },
    {
      "fecha": "2026-09-03",
      "valor": 1.1615
    },
    {
      "fecha": "2026-09-04",
      "valor": 1.1622
    },
    {
      "fecha": "2026-09-07",
      "valor": 1.1622
    },
    {
      "fecha": "2026-09-08",
      "valor": 1.1614
    },
    {
      "fecha": "2026-09-09",
      "valor": 1.1652
    },
    {
      "fecha": "2026-09-10",
      "valor": 1.1616
    },
    {
      "fecha": "2026-09-11",
      "valor": 1.1592
    },
    {
      "fecha": "2026-09-14",
      "valor": 1.1551
    },
    {
      "fecha": "2026-09-15",
      "valor": 1.1539
    },
    {
      "fecha": "2026-09-16",
      "valor": 1.1537
    },
    {
      "fecha": "2026-09-17",
      "valor": 1.1481
    },
    {
      "fecha": "2026-09-18",
      "valor": 1.146
    },
    {
      "fecha": "2026-09-21",
      "valor": 1.149
    },
    {
      "fecha": "2026-09-22",
      "valor": 1.1463
    },
    {
      "fecha": "2026-09-23",
      "valor": 1.1411
    },
    {
      "fecha": "2026-09-24",
      "valor": 1.1367
    },
    {
      "fecha": "2026-09-25",
      "valor": 1.1403
    },
    {
      "fecha": "2026-09-28",
      "valor": 1.1378
    },
    {
      "fecha": "2026-09-29",
      "valor": 1.1355
    }
  ],
  "unidades_por_euro": 1.1225,
  "volatilidad_anual_pct": 4.37
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.vextorium.com/divisas-serie-pago' \
  -H 'content-type: application/json' \
  --data-raw '{"dias":30,"divisa":"USD"}'

# 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/divisas-serie-pago' \
  -H 'content-type: application/json' \
  --data-raw '{"dias":30,"divisa":"USD"}' \
  | 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 $0.004 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.004" });
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 $0.004 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.vextorium.com%2Fdivisas-serie-pago&method=POST
const res = await pay("https://api.vextorium.com/divisas-serie-pago", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "dias": 30,
    "divisa": "USD"
  }),
});
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 $0.004 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.004"})
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/divisas-serie-pago",
        json={
            "dias": 30,
            "divisa": "USD",
        },
    )
    print(res.status_code, res.text)