Frankfurter

Frankfurter is a free and open-source currency data API that tracks reference exchange rates published by institutional and non-commercial sources like the European Central Bank. Check the website for a detailed walkthrough.

The API is publicly available at [https://api.frankfurter.dev][].

The simplest way to run Frankfurter locally is with Docker:

docker run -d -p 80:8080 lineofflight/frankfurter

Once the container is running, open your browser and go to http://localhost.

• https://github.com/xuhcc/beancount-exchangerates is a Beancount price source plugin using this API

Frankfurter is built with Ruby. To contribute:

1. Fork.
2. Install dependencies with bundle install.
3. Run tests with bundle exec rake.
4. Push your changes to a feature branch.
5. Open a pull request.

• Migrate to SQLite
• Add API versioning in path
• Multiple Data Sources
• Add GraphQL endpoint
• Deploy as a blockchain oracle

If you notice a currency missing from our data, please open an issue and include a suggested source with the missing data. We're looking for non-commercial sources like the European Central Bank that publish current and historical daily rates at the end of each working day.