> For the complete documentation index, see [llms.txt](https://docs.rigoblock.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.rigoblock.com/solidity-api-reference/protocol/interfaces/v4/pool/ismartpoolfallback.md).

# ISmartPoolFallback

## ISmartPoolFallback

### fallback

```solidity
fallback() external
```

Delegate calls to pool extension.

*Delegatecall restricted to owner, staticcall accessible by everyone. Restricting delegatecall to owner effectively locks direct calls.*

### receive

```solidity
receive() external payable
```

Allows transfers to pool.

*Prevents accidental transfer to implementation contract.*