> ## 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.

# Asset Class

> Asset class identifiers mapped to pricing endpoints.

## AssetClass Enumeration

Defines the asset classes that can appear in price request `base` and `quote` descriptors as well as discovery responses. The `type` field inside asset descriptors must match one of the following values.

| Value    | Description                            | Notes                                                                 |
| -------- | -------------------------------------- | --------------------------------------------------------------------- |
| `erc20`  | Fungible ERC-20 token on an EVM chain. | Require `address` (EIP-55 checksum).                                  |
| `fiat`   | Fiat currency.                         | Require ISO 4217 `code` (e.g., `USD`).                                |
| `native` | Native gas token for a chain.          | Provide `symbol`; optional `wrapped_address` for the wrapped variant. |
| `index`  | Synthetic/composite index.             | Provide `symbol` referencing BlockDB index ID.                        |

### Usage Notes

* Additional asset classes may be introduced over time; clients should treat unknown values as unsupported.
* Asset descriptors may include supplementary metadata (e.g., `decimals`) but only the fields listed above are required for price
  endpoints.