---
id: "huyenchip-agents"
title: "Agents"
creator: "Chip Huyen"
url: "https://huyenchip.com/2025/01/07/agents.html"
level: "intermediate"
category: "agents"
models: ["any"]
source_date: "2025-01-07"
date_added: "2026-10-18"
---

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

# Agents

by Chip Huyen

[Read the original →](https://huyenchip.com/2025/01/07/agents.html)

Long-form essay on tools, planning, failure modes and evaluating agents.

The essay examines how agents use tools and planning, along with the challenges of evaluating them. It is a practical bridge between introductory definitions and decisions about a working system.

Level: [Intermediate](/levels/index.md#intermediate)
Models: any
Category: [Agents and harnesses](/agents/index.md)
Tags: [design-patterns](/tags/design-patterns/index.md)
Source date: 2025-01-07
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.