Currencies and the countries that use them.

Codes, symbols and minor units, linked to the countries that use them. Reference data, not exchange rates.

GET/api/v1/currencies/EUR200

{
  "code": "EUR",
  "numeric": "978",
  "name": "Euro",
  "symbol": "€",
  "minor_units": 2
}

Simplified example, not live data.

What currency data gives you

Codes and minor units: Alphabetic and numeric codes with the number of decimal places each currency uses.
Linked to countries: Go from a country to its currency and back, with the same identifiers as the country data.
Changes over time: Introductions and withdrawals are versioned, so old records stay readable.
Licence stated up front: Source and terms are listed next to the data, so you can check them before you ship.

Source, licence and verification status travel with the data. This is an excerpt of the register behind the API.

Source	Used for	Licence
ISO 4217 registry	Currencies	Stated per source

Create a key in your account and send it in the x-api-key header.

curl "https://currency.atlasref.dev/api/v1/currencies/EUR" \
  -H "x-api-key: $ATLASREF_KEY"

The other datasets use the same identifiers and the same rules about sources.