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

# Core Concepts

> Agents, fleets, tasks, tools, knowledge, memory, and the organizational hierarchy.

Hexel Studio is built around a small set of concepts that work together. Understanding them makes every product easier to use.

## The mental model

<img src="https://mintcdn.com/hexelstudio-2127951d/utVkRjxsT1DGYlO5/assets/diagrams/concepts-overview.png?fit=max&auto=format&n=utVkRjxsT1DGYlO5&q=85&s=b1ca563e3557e1bad83567f6125157ba" alt="Hexel Studio concepts overview" width="1536" height="1024" data-path="assets/diagrams/concepts-overview.png" />

An **agent** is a deployable unit of work. **Fleets** group agents so a **task** can be planned and executed across them. Agents use **tools** to act on external systems and draw on **knowledge and memory** for context. Everything is scoped within your **organization, workspace, and environment**.

## Concepts

<CardGroup cols={2}>
  <Card title="Agents" icon="robot" href="/docs/concepts/agents">
    Deployable units that serve requests and perform work.
  </Card>

  <Card title="Fleets" icon="layer-group" href="/docs/concepts/fleets">
    Groups of agents that tasks are routed across.
  </Card>

  <Card title="Tasks & Workflows" icon="sitemap" href="/docs/concepts/tasks-and-workflows">
    Goals planned into workflows and executed.
  </Card>

  <Card title="Tools" icon="plug" href="/docs/concepts/tools">
    Integrations that let agents act on external systems.
  </Card>

  <Card title="Knowledge & Memory" icon="brain" href="/docs/concepts/knowledge-and-memory">
    Persistent context agents can search and recall.
  </Card>

  <Card title="Organizations" icon="building" href="/docs/concepts/organizations">
    How resources are scoped and isolated.
  </Card>
</CardGroup>

## Product mapping

| Concept                             | Product                                  |
| ----------------------------------- | ---------------------------------------- |
| Agents, instances, sandboxes        | [Compute](/docs/compute/overview)             |
| Knowledge, memory, connectors       | [Data Platform](/docs/data-platform/overview) |
| Tasks, fleets, approvals            | [Orchestration](/docs/orchestration/overview) |
| Tools, connected accounts           | [Tool Gateway](/docs/tool-gateway/overview)   |
| Organizations, environments, access | [IAM & Organizations](/docs/iam/overview)     |

## Next steps

Start with [Agents](/docs/concepts/agents), then continue through the concepts in order, or jump to a product overview.