Caja Rural de Extremadura Exchange Rate API: EUR Buy and Sell Rates as JSON

Caja Rural de Extremadura is a rural savings cooperative (caja rural) in Grupo Caja Rural serving Extremadura. Its ruralvía exchange-rate page lists buy and sell rates against the euro for about 16 currencies, for non-cash operations under EUR 3,000. This guide shows how to read that board as JSON: what the rates mean, how they compare with the European Central Bank official rate and with other banks in Spain, and the calls that return them.

What the CR Extremadura board shows

• 16 currencies against the euro: AUD, CAD, CHF, CZK, DKK, GBP, HUF, JPY, MXN, NOK, NZD, PLN, RUB, SEK, USD and ZAR. Every value is EUR per 1 unit of the foreign currency.
• The divisas (non-cash, under EUR 3,000) buy / sell pair. Spanish banks quote foreign currency per 1 euro, with separate tables for non-cash currency (divisas) and bank notes (billetes); the non-cash table is shown here, inverted to euros per unit. The European Central Bank’s reference rate sits between the buy and sell. The European Central Bank official rate is shown next to each row.
• USD on 15 November 2026: CR Extremadura bought at 0.8914 and sold at 0.9189 EUR, a spread of 3.04%. The European Central Bank official rate was 0.9048, so the bank's mid sat +0.04% from it.
• The bank's own timestamp. The page prints a last-updated stamp (13-11-2026 14:28:04 on the board above), returned as bank_updated_at next to our captured_at.
• Every day's board is kept permanently, from 13 November 2026. Read one past day with ?date=, or a range for one currency with the /history endpoint (paid plans).

Spreads across the board

On the 15 November 2026 board the tightest spreads were AUD (0.04%), CAD (0.04%), CZK (0.04%) and the widest USD (3.04%), MXN (3.04%), GBP (3.04%). Spread is (sell − buy) ÷ mid: what a round trip through the bank costs, before any fees. The API returns it on every row as spread_pct, so you can rank currencies or alert when a bank widens its board.

USD at CR Extremadura and other banks in Spain

USD on the 39 boards AllRatesToday reads in Spain, all captured on 15 November 2026 (the European Central Bank official rate was 0.9048):

CR Extremadura had the 13th narrowest USD spread of the 39. One call to /api/v1/bank-rates/es returns every board in the table at once.

Get the board (REST)

You need an API key; the free key works. The full board:

curl "https://allratestoday.com/api/v1/bank-rates/es/crextremadura" \
  -H "Authorization: Bearer art_live_your_key"

What comes back (the 15 November 2026 board, first three rows):

{
  "bank": "crextremadura",
  "name": "Caja Rural de Extremadura",
  "country": "es",
  "quote_ccy": "EUR",
  "bank_updated_at": "13-11-2026 14:28:04",
  "basis": "Divisas (non-cash, under EUR 3,000) buy / sell",
  "captured_at": "2026-11-15T11:23:29.875Z",
  "rates": [
    {"ccy":"AUD","buy":0.61382606,"sell":0.61407182,"mid":0.61394894,"spread_pct":0.04,"official":0.6139489194499017,"vs_official_pct":0},
    {"ccy":"CAD","buy":0.63443122,"sell":0.63468489,"mid":0.63455805,"spread_pct":0.04,"official":0.6345982992765579,"vs_official_pct":-0.006},
    {"ccy":"CHF","buy":1.0632834,"sell":1.0961054,"mid":1.0796944,"spread_pct":3.04,"official":1.0792143319663285,"vs_official_pct":0.044},
    … 13 more currencies
  ],
  "disclaimer": "…",
  "attribution": { … }
}

One currency, with the row fields at the top level:

curl "https://allratestoday.com/api/v1/bank-rates/es/crextremadura?ccy=USD" \
  -H "Authorization: Bearer art_live_your_key"

{
  "bank": "crextremadura",
  "name": "Caja Rural de Extremadura",
  "country": "es",
  "quote_ccy": "EUR",
  "bank_updated_at": "13-11-2026 14:28:04",
  "basis": "Divisas (non-cash, under EUR 3,000) buy / sell",
  "captured_at": "2026-11-15T11:23:29.875Z",
  "ccy": "USD",
  "buy": 0.89142529,
  "sell": 0.91894281,
  "mid": 0.90518405,
  "spread_pct": 3.04,
  "official": 0.9048136083966704,
  "vs_official_pct": 0.041,
  "disclaimer": "Retail buy/sell rates as displayed on each bank’s own website at capture time, quoted as home currency per 1 unit of foreign currency. Indicative only: banks change these through the day, apply them at the counter or in-app, and they are not official or reference rates. For the rate a regulation names, use the central-bank endpoints.",
  "attribution": {
    "source": "Board rates published by Caja Rural de Extremadura on its own website, collected by AllRatesToday",
    "bank_url": "https://www.ruralvia.com/portal_rvia/ServletDirectorPortal?clavePagina=TIPO_CAMBIO_DIVISAS&canal=000003&demo=0&marca=0000&entidad=3009",
    "url": "https://allratestoday.com/bank-exchange-rate-api/es/crextremadura/",
    "terms": "Public pages that show the rates need a visible link to allratestoday.com"
  }
}

The board as it stood on a past day:

curl "https://allratestoday.com/api/v1/bank-rates/es/crextremadura?date=2026-11-13" \
  -H "Authorization: Bearer art_live_your_key"

One currency over a date range, one row per day (paid plans; add &format=csv, xml or xlsx for a file):

curl "https://allratestoday.com/api/v1/bank-rates/es/crextremadura/history?ccy=USD&from=2026-11-13&to=2026-11-15" \
  -H "Authorization: Bearer art_live_your_key"

JavaScript

npm install @allratestoday/sdk

import { AllRatesToday } from '@allratestoday/sdk';

const client = new AllRatesToday({ apiKey: 'art_live_your_key' });

// Caja Rural de Extremadura's USD row
const r = await client.bankRates('es', { bank: 'crextremadura', ccy: 'USD' });
console.log(`CR Extremadura buys USD at ${r.buy}, sells at ${r.sell} EUR`);

// The board as it stood on a past day
const past = await client.bankRates('es', { bank: 'crextremadura', date: '2026-11-13' });
console.log(past.snapshot_date, past.rates.length);

Python

import requests

r = requests.get(
    "https://allratestoday.com/api/v1/bank-rates/es/crextremadura",
    headers={"Authorization": "Bearer art_live_your_key"},
    timeout=10,
)
r.raise_for_status()
for row in r.json()["rates"]:
    print(row["ccy"], row["buy"], row["sell"], row["spread_pct"])

Board rate or official rate?

The European Central Bank rate is the one tax, accounting and customs rules in Spain name; nobody transacts at it. CR Extremadura's board is the price a customer actually gets. The API puts both on every row: official is the central bank's rate for the same currency and vs_official_pct is how far the bank's mid sits from it. Use the board to show customers a real price, compare banks for a remittance, or keep a dated record of what the bank quoted; use the European Central Bank endpoint when a rule asks for the official rate.

FAQ

Where do the Caja Rural de Extremadura rates come from?

From the bank's own public rates page (https://www.ruralvia.com/portal_rvia/ServletDirectorPortal?clavePagina=TIPO_CAMBIO_DIVISAS&canal=000003&demo=0&marca=0000&entidad=3009), read hourly. AllRatesToday does not change the numbers: each row is the buy and sell price CR Extremadura shows, with the mid, the spread and the European Central Bank rate added.

Are these the official EUR exchange rates?

No. They are CR Extremadura's retail prices for customers. The official rate in Spain is the European Central Bank rate, which the API returns as official on each row where the central bank has one, and in full from the central-bank endpoint.

How often is the CR Extremadura board updated?

AllRatesToday reads the page every hour. The bank's own last-updated stamp is returned as bank_updated_at, so you can tell a fresh read of an unchanged board from a new board.

Can I get CR Extremadura rates for a past date?

Yes, from 13 November 2026 onward; every day's board is kept permanently. Add ?date=YYYY-MM-DD for one day: the response is the board captured that day, or the nearest earlier day within five days, with date_requested and snapshot_date added. For a range, /history?ccy=USD&from=…&to=… returns one row per day as JSON, CSV, XML or XLSX on paid plans.

Do I need an API key?

Yes. Commercial bank boards need an API key; any plan works, the free key included, and each call counts against the plan. Public pages or widgets that show the rates need a visible link to allratestoday.com.