> ## Documentation Index
> Fetch the complete documentation index at: https://docs.cognite.com/llms.txt
> Use this file to discover all available pages before exploring further.

# About Flows custom apps

> Understand the core concepts of Flows custom apps, from built-in features and AI skills to spec-driven development workflows for Cognite Data Fusion (CDF) apps.

Learn what **Flows** (`@cognite/cli`) gives you out of the box and how to align your team around specs before you dive into procedures and APIs.

<CardGroup cols={2}>
  <Card title="Features" icon="book-open" href="/cdf/flows/concepts/features">
    Scaffolding, auth, Vite, tests, deploy, and data fetching at a glance.
  </Card>

  <Card title="Skills" icon="wand-sparkles" href="/cdf/flows/concepts/skills">
    Agent-agnostic AI skills that ship with every Flows custom app.
  </Card>

  <Card title="Spec-driven development" icon="clipboard-list" href="/cdf/flows/concepts/spec-driven-development">
    Plan features in checked-in specs your team and agent both work from.
  </Card>

  <Card title="App lifecycle" icon="refresh-cw" href="/cdf/flows/concepts/app-lifecycle">
    Draft vs published versions and how the active version works.
  </Card>

  <Card title="Architecture best practices" icon="layers" href="/cdf/flows/concepts/architecture-best-practices">
    Patterns and pitfalls for keeping Flows apps well-structured as they grow.
  </Card>
</CardGroup>