Spain Fuel Stations

{
  "avg_price": 1.858,
  "cheapest": [
    {
      "address": "RONDA SEGOVIA, 37",
      "brand": "BALLENOIL",
      "distance_km": 1.37,
      "latitude": 40.41025,
      "length": -3.717528,
      "municipality": "Madrid",
      "price_eur_liter": 1.748,
      "province": "MADRID",
      "schedule": "L-D: 24H",
      "zip": "28005"
    },
    {
      "address": "PASEO SANTA MARIA DE LA CABEZA, 90",
      "brand": "SHELL",
      "distance_km": 2.12,
      "latitude": 40.397722,
      "length": -3.702472,
      "municipality": "Madrid",
      "price_eur_liter": 1.769,
      "province": "MADRID",
      "schedule": "L-D: 24H",
      "zip": "28045"
    }
  ],
  "fuel": "gasoline95",
  "max_price": 1.909,
  "min_price": 1.748,
  "source": "Spanish Ministry for the Ecological Transition (fuel Geoportal, open data)",
  "stations_in_zone": 23,
  "updated": "02/10/2026 17:00:33"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.vextorium.com/v1/spain-fuel-stations' \
  -H 'content-type: application/json' \
  --data-raw '{"fuel":"gasoline95","latitude":40.4168,"length":-3.7038,"limit":3,"radio_km":3}'

# 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/v1/spain-fuel-stations' \
  -H 'content-type: application/json' \
  --data-raw '{"fuel":"gasoline95","latitude":40.4168,"length":-3.7038,"limit":3,"radio_km":3}' \
  | 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.vextorium.com%2Fv1%2Fspain-fuel-stations&method=POST
const res = await pay("https://api.vextorium.com/v1/spain-fuel-stations", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "fuel": "gasoline95",
    "latitude": 40.4168,
    "length": -3.7038,
    "limit": 3,
    "radio_km": 3
  }),
});
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.post(
        "https://api.vextorium.com/v1/spain-fuel-stations",
        json={
            "fuel": "gasoline95",
            "latitude": 40.4168,
            "length": -3.7038,
            "limit": 3,
            "radio_km": 3,
        },
    )
    print(res.status_code, res.text)