Free 14-Chapter Course Teaches Engineers to Build Stable, Reliable AI Agents

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Walking Labs released 'Learn Harness Engineering,' a free open-source course in late March 2026, which has since gained over 15,800 GitHub stars in roughly six months. The 14-chapter, project-based curriculum teaches developers how to design structured environments around AI models — covering instructions, state tracking, verification, scope control, and session lifecycle. The course addresses a common real-world problem where AI coding agents produce broken work overnight or lose all context between sessions. All eight hands-on projects use a single Electron app, letting learners see one harness system evolve progressively rather than restarting from scratch each time. Available in 15 languages under the MIT license, the course also ships two practical tools — a harness-creator skill and an audit-harness.sh script — for immediate use on existing repositories.

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