Zero to Hero · 12 Chapters

Learn OpenHarness

Official Interactive Tutorial for OpenHarness

Understand AI Agent infrastructure the way Claude Code works.
Agent Loop, Tool System, Memory, Multi-Agent collaboration...
12 chapters from zero to mastery. No AI or programming experience needed.

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What You'll Learn

12 chapters, from fundamentals to advanced, step by step

Phase A · Fundamentals

1
What Is an AI Agent
From 'just talking' to 'getting things done'
2
What Is a Harness
The equipment system for an Agent
3
The Harness Equation
Tools + Knowledge + Observation + Action + Permissions

Phase B · Core Mechanisms

4
Agent Loop
The Agent's heartbeat — a cycle of think, act, observe
5
The Tool System
The Agent's hands — 43+ built-in tools
6
The Permission System
Three-tier safety guardrails — keeping the Agent safe
7
The Hook System
Lifecycle events — inject custom logic at key moments

Phase C · Intelligence Layer

8
The Skills System
An on-demand knowledge library
9
The Memory System
Letting the Agent remember you across conversations
10
MCP Integration
A standardized connection to the outside world

Phase D · Advanced

11
Multi-Agent Collaboration
Making multiple Agents work like a team
12
The Full Picture
The complete journey from user input to Agent response

Core Formula

Harness = Tools + Knowledge + Observation + Action + Permissions

An AI Agent Harness consists of five core capabilities. OpenHarness implements the complete Harness architecture in ~11,700 lines of code.

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Beginner Friendly
No AI or programming experience required — every concept has a real-world analogy
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Step by Step
12 chapters from simple to complex, each building on the previous one
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Interactive
Animated demos, interactive simulators, and quizzes with instant feedback