Frankfurter

Frankfurter is a free and open-source currency data API that tracks reference exchange rates published by the European Central Bank.

The simplest way to run Frankfurter is with Docker:

docker run -d -p 8080:8080 \
  -e "DATABASE_URL=<postgres_url>" \
  --name frankfurter hakanensari/frankfurter

For a complete setup including PostgreSQL:

1. Copy the docker-compose.yml file
2. Run:

docker compose up --wait

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.

• Infrastructure

  • Migrate from PostgreSQL to SQLite for simpler deployment.
  • Add API versioning in URL path.

• Data Sources

  • Add support for multiple data providers.
    • IMF
    • Other central banks

• Features

  • Add GraphQL endpoint.
  • Deploy as a blockchain oracle.