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92 lines
1.9 KiB
Markdown
92 lines
1.9 KiB
Markdown
# Frankfurter
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[](https://travis-ci.org/hakanensari/frankfurter)
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Foreign exchange (forex) rates and currency conversion API
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## Getting Started
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Frankfurter is a free and open source API for current and historical foreign exchange rates. It tracks data published by the European Central Bank.
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Rates are updated around 4PM CET every working day.
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## Examples
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Get the current foreign exchange rates.
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```http
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GET /latest HTTP/1.1
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```
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Get historical rates for any day since 1999.
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```http
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GET /2000-01-03 HTTP/1.1
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```
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Get historical rates for a time period.
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```http
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GET /2010-01-01..2010-01-31 HTTP/1.1
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```
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Rates quote against the Euro by default. Quote against a different currency.
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```http
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GET /latest?from=USD HTTP/1.1
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```
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Request specific exchange rates.
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```http
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GET /latest?to=USD,GBP HTTP/1.1
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```
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Convert a specific amount.
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```http
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GET /latest?amount=1000&from=GBP&to=USD HTTP/1.1
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```
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With a full list of currencies, time series grow large in size. For better performance, use the to parameter to reduce the response weight.
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```http
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GET /2016-01-01..2016-12-31?from=GBP&to=USD HTTP/1.1
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```
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Here we return the current GBP/USD currency pair with JavaScript.
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```js
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// Fetch and display GBP/USD
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fetch('/latest?from=GBP&to=USD')
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.then(resp => resp.json())
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.then((data) => { alert(`GBPUSD = ${data.rates.USD}`); });
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```
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Cache data whenever possible.
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## Deployment
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To build locally, type
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```bash
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docker-compose up -d
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```
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Now you can access the API at `http://localhost:8080`.
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In production, create a [`.env`](.env.example) file and run with
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```bash
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docker-compose -f docker-compose.yml -f docker-compose.prod.yml up -d
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```
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To update to a newer image, run
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```bash
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docker-compose -f docker-compose.yml -f docker-compose.prod.yml pull
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docker-compose -f docker-compose.yml -f docker-compose.prod.yml up -d
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```
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Within a few minutes, you will access the API at `https://yourdomain.com`.
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