> For the complete documentation index, see [llms.txt](https://alchemix-finance.gitbook.io/v2/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://alchemix-finance.gitbook.io/v2/tokenadaptercover.md).

# TokenAdapter

The `TokenAdapter` interface is used to specify adapters that interact with yield bearing tokens.

They currently serve 4 main purposes:

1. Providing a reliable price oracle for the price of the `yieldToken` in units of `underlyingTokens`.
2. Wrapping the supported `underlyingToken` into the supported `yieldToken`.
3. Unwrapping the supported `yieldToken` into the supported `underlyingToken`.

Users can pass a `maximumLoss` parameter (denominated in basis-points) to the `wrap()` and `unwrap()` functions which will cause the transaction to revert if the amount of underlying tokens lost as a result of the action exceeds it.

### [**Functions**](/v2/tokenadaptercover/itokenadapter.md)

### [**Interface**](/v2/tokenadaptercover/itokenadapter-1.md)