# Compose Runtime API Reference

> Core runtime layer with state management, recomposition, and side-effect APIs.

## Packages

- [Runtime](https://composables.com/jetpack-compose/androidx.compose.runtime/runtime/dependency.md): State management and side-effect APIs for Compose.
- [Runtime Saveable](https://composables.com/jetpack-compose/androidx.compose.runtime/runtime-saveable/dependency.md): State saving across configuration changes.
- [Runtime Annotation](https://composables.com/jetpack-compose/androidx.compose.runtime/runtime-annotation/dependency.md): Annotations used by Compose runtime and tooling.