Frankfurter

Frankfurter is a free API for current and historical foreign exchange rates published by the European Central Bank.

Rates are updated around 4PM CET every working day.

Usage

Get the latest foreign exchange rates.

GET /latest

Get historical rates for any day since 1999.

GET /2000-01-03

Rates quote against the Euro by default. Quote against a different currency.

GET /latest?from=USD

Request specific exchange rates.

GET /latest?to=GBP

Change the amount requested.

GET /latest?amount=100

Finally, use all the above together.

GET /latest?from=EUR&to=GBP&amount=100

The primary use case is client side. For instance, with money.js in the browser

let demo = () => {
  let rate = fx(1).from("GBP").to("USD")
  alert("£1 = $" + rate.toFixed(4))
}

fetch('https://yourdomain.com/latest')
  .then((resp) => resp.json())
  .then((data) => fx.rates = data.rates)
  .then(demo)

Installation

To build locally, type

docker-compose up -d

Now you can access the API at

http://localhost:8080

In production, first create a .env file based on .env.example. Then, run with

docker-compose -f docker-compose.yml -f docker-compose.prod.yml up -d

To update to a newer image

docker-compose -f docker-compose.yml -f docker-compose.prod.yml pull
docker-compose -f docker-compose.yml -f docker-compose.prod.yml up -d

Within a few minutes, you will be able to access the API at

https://yourdomain.com:8080