Guide
Introduction
Chapter 1 of the Harness Engineering Guide
Open Source Knowledge Base
Harness
Engineering
Guide
The open guide to building AI agent runtimes.
From core concepts to production patterns.
17 Articles5 Guide Chapters8 Papers20+ Tools
The Guide
Start Here
Five chapters covering everything from what a harness is, to production patterns, memory systems, and security.
Community
Community Voices
Articles, analysis, and perspectives from practitioners building with AI agent harnesses.
Official / Foundational
Anthropic: Multi-Agent Harness Design for Long-Running Applications
Prithvi Rajasekaran, Anthropic Labs
Research / Practice
AutoAgent: 第一个会自我优化的 Agent
huangserva ([@servasyy_ai](https://x.com/servasyy_ai))
Deep Dive / Analysis
Sebastian Raschka: Components of a Coding Agent
April 4, 2026
Practice / Case Study
Deux: Swift → Kotlin — Harness 驱动的跨平台代码转换
Hwang ([@hwwaanng](https://x.com/hwwaanng))
Landscape
The Ecosystem
Open-source projects, commercial platforms, and a comparison of the tools shaping harness engineering.
Landscape
Commercial Platforms
Commercial harness and managed agent platforms. *This list focuses on platforms with significant harness engineering. Omissions are not endorsements or criticisms — [suggest additions via PR](https://
Landscape
Harness Implementations Compared
A living comparison of major AI agent harness implementations. Last updated: April 2026. *This comparison is community-maintained. If you spot inaccuracies, please [open an issue](https://github.com/n
Landscape
Open-Source Harness Projects
A curated list of open-source projects related to AI agent harness engineering. *Know a project that should be listed? [Open a PR](https://github.com/nexu-io/harness-engineering-guide/pulls)!*
Research
Papers & Research
Foundational papers that shaped the field of harness engineering and AI agent runtimes.
Papers
Foundational Papers
Key papers on ReAct, Toolformer, Generative Agents, MemGPT, Reflexion, and more — the academic foundations of modern agent harness design.