---
title: "Reference"
description: "Command, declaration, installation, and client contracts."
order: 1
---

# Reference

- [CLI](cli.md): everyday commands and how to discover exact options.
- [Configuration and KDL](configuration.md): configuration ownership, atomic publication, and run revisions.
- [Home Manager](home-manager.md): declarative installation and service management.
- [Client API](client-api.md): supported client surfaces and engineering contracts.

The pages here are curated user references. Deep implementation contracts remain in the [repository's engineering documentation](https://github.com/compoundingtech/fractal/blob/main/docs).