Fiat Currency

FiatCurrency Enumeration

Defines the ISO 4217 fiat codes that can be referenced in price descriptors, quotes, and conversions.

Value	Description	Notes
`USD`	United States Dollar	ISO 4217 code `USD`; default quote.

Additional fiat codes may be added over time; unknown values should be rejected gracefully.
Fiat descriptors may include supplementary metadata (e.g., display symbol), but only the code is required.

Last modified on February 22, 2026