---
Title: "How Do AI Agents Work? Perceive, Plan, Act, Learn"
Url: "https://computer.io/answers/how-do-ai-agents-work"
Topic: "Agentic AI"
Description: "AI agents work in a loop: take a goal, gather context, plan steps with a language model, call tools to act, check results and repeat until done."
---

# How do AI agents work?

AI agents work in a loop. They take a goal or request, gather context from memory and connected data, use a large language model to plan the next step, call tools or APIs to act, observe the result, and repeat until the task is done or a human is needed. Guardrails, permissions and approvals limit what they can do.

## The agent loop

| Step | What happens |
|---|---|
| Goal | "Resolve this refund request" |
| Context | Customer history, policy, order data |
| Plan | Decide the next action |
| Act | Call a tool, e.g. check order |
| Observe | Read the result |
| Repeat or finish | Continue, ask, escalate or complete |

## Main components

A language model for reasoning, memory, tools and integrations, instructions and guardrails, and observability.

## In the enterprise

Main benefits are resolving requests end to end, working across systems, and running around the clock, with permissions and audit logs.

## FAQ

### What is an AI agent?

Software that uses AI to pursue goals by planning and taking actions, not just answering questions.

### Do AI agents need tools?

To act in the world, yes. Without tools they can only produce text.

### How are AI agents different from automation?

Automation follows fixed rules; agents decide steps dynamically based on context.

## Related terms

- [AI agent](https://computer.io/glossary/ai-agent)
- [Agentic AI](https://computer.io/glossary/agentic-ai)
- [Tool calling (function calling)](https://computer.io/glossary/tool-calling)

## How Computer helps

- [How computer works](https://computer.io/how-computer-works)
- [Agent studio](https://devrev.ai/agent-studio)

## Further reading

- [What are ai agents](https://devrev.ai/blog/what-are-ai-agents)
- [Ai agent tools](https://devrev.ai/blog/ai-agent-tools)
- [Ai agents enterprise workflows](https://devrev.ai/blog/ai-agents-enterprise-workflows)