---
id: "anthropic-building-effective-agents"
title: "Building Effective AI Agents"
creator: "Anthropic"
url: "https://www.anthropic.com/engineering/building-effective-agents"
level: "beginner"
category: "agents"
models: ["any"]
source_date: "2024-12-19"
date_added: "2026-10-18"
---

[Agents and harnesses](/agents/index.md)

# Building Effective AI Agents

by Anthropic

[Read the original →](https://www.anthropic.com/engineering/building-effective-agents)

Workflows vs agents and the core patterns; argues to start simple. Readable without code.

Anthropic contrasts predefined workflows with systems that choose their next steps. This is a useful first read for deciding whether a simple arrangement is enough before adding autonomous behavior.

Level: [Beginner](/levels/index.md#beginner)
Models: any
Category: [Agents and harnesses](/agents/index.md)
Tags: [design-patterns](/tags/design-patterns/index.md)
Source date: 2024-12-19
Added: 2026-10-18
Last verified: 2026-10-18
Status: ok

Summary in our own words. All rights with the original creator. Correction or removal: DM on X.