> For the complete documentation index, see [llms.txt](https://docs.ionprotocol.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ionprotocol.io/devs/smart-contract-architecture/periphery/ilkslot0.md).

# IlkSlot0

[Git Source](https://github.com/Ion-Protocol/ion-protocol/blob/88cc595825f1dc2eb738fb93e172a3e8ab7a5c43/src/periphery/IonLens.sol)

```
struct IlkSlot0 {
    uint104 totalNormalizedDebt;
    uint104 rate;
    uint48 lastRateUpdate;
}
```