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

# Explanation Overview

> Concepts and architecture behind RunAgent — the "why"

> Understanding the "why" and "how" behind RunAgent. These pages explain the concepts, architecture, and design decisions that make RunAgent work.

## What's in This Section?

The Explanation section contains **theory-first, diagram-rich pages** that dive deep into how RunAgent works. Unlike tutorials (which show you how to do things) or how-tos (which solve specific problems), these pages explain the underlying concepts and architecture.

<Tip>
  **Keep theory here.** Tutorials and how-tos should only include brief callouts. This section is for deep dives into concepts and architecture.
</Tip>

## Start Here

<CardGroup cols={3}>
  <Card title="Why RunAgent?" href="./why-runagent" arrow>
    Understand the problems RunAgent solves and why it exists
  </Card>

  <Card title="Key Concepts at a Glance" href="./key-concepts-at-a-glance" arrow>
    Quick cheat sheet of core concepts in one page
  </Card>

  <Card title="Introduction" href="./introduction" arrow>
    High-level overview of RunAgent's capabilities and benefits
  </Card>
</CardGroup>

## Core Concepts & Architecture

<CardGroup cols={2}>
  <Card title="Core Concepts" href="./core-concepts">
    **Entrypoints, tags, agent lifecycle, and more.** Understand the fundamental building blocks that make RunAgent work.
  </Card>

  <Card title="Architecture Overview" href="./architecture-overview">
    **How RunAgent works under the hood.** Learn about the system architecture, request flow, and component interactions.
  </Card>

  <Card title="Frameworks Overview" href="./frameworks-overview">
    **Framework integration patterns.** See how RunAgent works with LangGraph, CrewAI, and other AI frameworks.
  </Card>

  <Card title="Feature Overview" href="./feature-overview">
    **What RunAgent can do today.** A comprehensive map of current capabilities and upcoming features.
  </Card>
</CardGroup>

## Production & Operations

<CardGroup cols={2}>
  <Card title="Production Considerations" href="./production-considerations">
    **Deploying to production.** Scaling, monitoring, error handling, and best practices for production deployments.
  </Card>

  <Card title="Security Model" href="./security">
    **Security architecture and best practices.** Learn about sandboxing, authentication, and securing your agents.
  </Card>
</CardGroup>

## Project Information

<CardGroup cols={2}>
  <Card title="Changelog" href="./changelog">
    **What's new and what changed.** Track updates, new features, and breaking changes.
  </Card>

  <Card title="Roadmap" href="./roadmap">
    **What's coming next.** See planned features, improvements, and the future direction of RunAgent.
  </Card>
</CardGroup>

## Vision & Future

<CardGroup cols={1}>
  <Card title="(Vision) Agent-to-Agent" href="./agent-to-agent">
    **The future of agent coordination.** How agents will communicate and collaborate with each other.
  </Card>
</CardGroup>

## How to Use This Section

<AccordionGroup>
  <Accordion title="New to RunAgent?">
    Start with **[Why RunAgent?](./why-runagent)** to understand the problems it solves, then read **[Key Concepts at a Glance](./key-concepts-at-a-glance)** for a quick overview. After that, dive into **[Core Concepts](./core-concepts)** for detailed explanations.
  </Accordion>

  <Accordion title="Building Production Systems?">
    Read **[Production Considerations](./production-considerations)** for scaling and monitoring guidance, and **[Security Model](./security)** for security best practices.
  </Accordion>

  <Accordion title="Integrating Frameworks?">
    Check **[Frameworks Overview](./frameworks-overview)** to see how RunAgent integrates with LangGraph, CrewAI, and other frameworks.
  </Accordion>

  <Accordion title="Want to Understand the Architecture?">
    **[Architecture Overview](./architecture-overview)** explains how RunAgent works internally, including request flow, component interactions, and system design.
  </Accordion>
</AccordionGroup>

## Related Sections

<CardGroup cols={3}>
  <Card title="Tutorials" href="/tutorials/overview" arrow>
    Step-by-step guides to build real applications
  </Card>

  <Card title="How-to Guides" href="/how-to/overview" arrow>
    Solutions to specific problems and use cases
  </Card>

  <Card title="Reference" href="/reference/overview" arrow>
    API documentation and SDK references
  </Card>
</CardGroup>

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</Card>