> ## Documentation Index
> Fetch the complete documentation index at: https://docs.blockdb.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Fiat Currency

> Fiat codes available for quote currency conversions.

## 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. |

### Usage Notes

* 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.