---
title: Concepts
description: Understand the core concepts behind Cloudflare Agents, including state, tools, workflows, and memory.
image: https://developers.cloudflare.com/dev-products-preview.png
---

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

[Skip to content](#%5Ftop) 

# Concepts

* [ What are agents? ](https://developers.cloudflare.com/agents/concepts/what-are-agents/)
* [ Workflows ](https://developers.cloudflare.com/agents/concepts/workflows/)
* [ Tools ](https://developers.cloudflare.com/agents/concepts/tools/)
* [ Agent class internals ](https://developers.cloudflare.com/agents/concepts/agent-class/)
* [ Human in the Loop ](https://developers.cloudflare.com/agents/concepts/human-in-the-loop/)
* [ Calling LLMs ](https://developers.cloudflare.com/agents/concepts/calling-llms/)
* [ Long-running agents ](https://developers.cloudflare.com/agents/concepts/long-running-agents/)
* [ Memory ](https://developers.cloudflare.com/agents/concepts/memory/)

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```