What is Harness Engineering ?

Link: LangChain's benchmark case study (https://www.langchain.com/blog/improving-deep-agents-with-harness-engineering) Terminal-Bench 2.0 leaderboard (https://www.tbench.ai/leaderboard/terminal-bench/2.0?ref=blog.langchain.com) ZenML's write-up of the same case study (https://www.zenml.io/llmops-database/harness-engineering-for-agentic-coding-systems) OpenAI's original post on the topic (https://openai.com/index/harness-engineering/) HumanLayer's "Skill Issue" post (https://www.humanlayer.dev/blog/skill-issue-harness-engineering-for-coding-agents) Want to go deeper? Agentic 3.0 Course — use code MAYANK15 for 15% off (https://learn.krishnaikacademy.com/web/checkout/69f857703d5fe9dfcb3f4a31) An AI coding agent jumped from outside the Top 30 to Top 5 on a tough benchmark — without changing the model at all. This video explains why, and shows you how to do the same thing in your own setup. WHAT YOU'LL LEARN — What harness engineering means, in plain words — Prompt engineering vs context engineering vs harness engineering — The 5 parts every reliable AI agent setup needs — A live demo: 2 safety rules built inside Claude Code — Why blaming the model is the wrong move when your agent messes up — What's already coming next: loop engineering CHAPTERS [update after final edit] CONNECT WITH ME LinkedIn (https://www.linkedin.com/in/mayank953/) YouTube (https://www.youtube.com/@tech.mayankagg) Instagram (https://www.instagram.com/tech.mayankagg/) Udemy (https://www.udemy.com/user/mayank-aggarwal-197/) If this helped you, share it with someone who's still just using AI at a surface level. And let me know in the comments — what are you going to build first? #ClaudeCode #AIAutomation #ClaudeCodeTutorial #AIAgents #AgenticAI #MCP #LearnAI #AITools #Python #ReactJS #AIProjects #HarnessEngineering #PromptEngineering #ContextEngineering #AIAgentHarness #CodingWithAI