AI
Harness Engineering: The Complete Guide to Building Reliable AI Agents in 2026
Harness Engineering is the emerging discipline of designing the scaffolding — context delivery, tool interfaces, verification loops, memory systems, and sandboxes — that surrounds an AI agent and determines whether it succeeds or fails. This comprehensive guide covers the evolution from prompt engineering to harness engineering, core components, key projects, production case studies, and a practical roadmap for adoption.