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

# Use cases

> Example domains people model as a brain.

A brain is domain-agnostic — you define the concepts and the edges between them.
Some example use cases:

<CardGroup cols={2}>
  <Card title="Production architecture" icon="sitemap">
    Model services, datastores, dashboards, runbooks, and alerts, with the edges
    between them, as a live map of your infrastructure.
  </Card>

  <Card title="Business process & org structure" icon="diagram-project">
    Map teams, roles, ownership, and the processes that connect them.
  </Card>

  <Card title="Sales lifecycle brain" icon="chart-line">
    Track leads, deals, and accounts through the pipeline as linked entities.
  </Card>

  <Card title="Real-time infrastructure" icon="server">
    Keep a representation of infrastructure current with connector-pulled,
    time-decaying data.
  </Card>
</CardGroup>

The three runnable examples in `examples/` — `support-brain`, `infra-brain`, and
`personal-brain` — are complete brains you can index and explore to see these shapes
in practice.