Euro wisselkoersen API — dagelijkse referentiekoersen van de Europese Centrale Bank voor ~30 valuta's. ECB exchange rates JSON API.

GET /v1/finance/exchange-rates

Returns the ECB daily euro foreign exchange reference rates for approximately 30 currencies. Published once per day by the European Central Bank at ~16:00 CET. Results are cached for 4 hours.

Request parameters

This endpoint has no query parameters.

Example request

curl -H "X-API-Key: YOUR_KEY" \
  "https://api.omnizoek.nl/v1/finance/exchange-rates"

Example response

{
  "base": "EUR",
  "date": "2026-03-12",
  "rates": {
    "USD": 1.0823,
    "GBP": 0.8512,
    "CHF": 0.9371,
    "JPY": 161.45,
    "SEK": 11.0340,
    "NOK": 11.7820,
    "DKK": 7.4612,
    "PLN": 4.1823,
    "CZK": 25.1200,
    "HUF": 402.30
  },
  "source": "European Central Bank (ECB) euro foreign exchange reference rates"
}

Response fields

Field	Type	Description
`base`	string	Base currency, always `"EUR"`
`date`	string	ECB reference date (ISO 8601, YYYY-MM-DD)
`rates`	object	Exchange rates vs EUR — ~30 currencies keyed by ISO 4217 code
`source`	string	Data source attribution

Supported currencies (partial list)

USD, GBP, CHF, JPY, CNY, KRW, AUD, CAD, NOK, SEK, DKK, PLN, CZK, HUF, RON, HRK, BGN, TRY, ZAR, MXN, INR, IDR, BRL, MYR, PHP, SGD, THB, ILS, HKD, NZD

Error responses

Status	Cause
`503`	ECB XML feed unavailable

Caching

Results are cached for 4 hours per the ECB publication schedule. ECB publishes updated rates once per trading day at approximately 16:00 CET.

Wisselkoersen (ECB)