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Learn Claude Code

Open Source
★ 78,452 • Updated Oct 12, 2026, 09:03 PM

Learn Claude Code is an open-source project that teaches harness engineering for real agents.

Use Cases ▼
01

Building a coding agent

02

Creating an always-on personal AI assistant

03

Developing a harness for a specific domain

What Problem It Solves ▼

Developers and researchers who want to build effective agent products face the challenge of creating a harness that allows the model to operate in a specific domain. Learn Claude Code solves this problem by providing a comprehensive course on harness engineering, covering the key mechanisms and designs needed to build a successful agent harness.

Key Features ▼
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Comprehensive course on harness engineering

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Provides a clear understanding of key mechanisms and designs

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Open-source and customizable

Overview

Learn Claude Code is an open-source project that teaches harness engineering for real agents. The project focuses on building a harness that gives a model an operational environment, allowing it to work effectively in a specific domain. The harness is everything an agent needs to work, including tools, knowledge, observation and action interfaces, and permissions. The project provides a 17-lesson course that covers various harness mechanisms, including agent loops, tool use, permission systems, and context compaction. Each lesson isolates one mechanism and provides a standalone runnable implementation. The project aims to help developers understand harness engineering from the inside out and provides two paths to turn that knowledge into product: the Kode Agent CLI and the Kode Agent SDK.

Pros & Cons

Pros

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Comprehensive course on harness engineering

+

Provides a clear understanding of key mechanisms and designs

+

Open-source and customizable

Cons

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Steep learning curve

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Requires a good understanding of programming and software development

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Kode Agent CLI Kode Agent SDK OpenClaw

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