import requests

BASE_URL = "https://api.frankfurter.app"

def get_currencies():
    """
    Fetch the list of available currencies from Frankfurter API.
    Returns a list of currency codes.
    """
    response = requests.get(f"{BASE_URL}/currencies")
    if response.status_code == 200:
        currencies = response.json()
        return list(currencies.keys())
    else:
        raise Exception("Failed to fetch currencies")