- Official sources only: central banks and national statistics offices.
- 22 currencies covered, from USD, EUR and JPY to BRL, KRW and NGN.
- Release timestamps on every figure, and history as it was known on each date.
- Works from the REST API, the Python SDK, CSV downloads or an AI assistant over MCP.
- US data is free without an API key; paid plans start with a 14-day free trial.
