Everyone is discussing what a harness is. Nobody shows you how to build one. And…
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Everyone is discussing what a harness is. Nobody shows you how to build one. And everyone can. So, I built my own Claude Code: https://github.com/phuryn/mini-harness It's called Mini Harness: about 1,200 lines of Python. Other minimal harnesses exist, but none has /goal mode, permissions + auto mode, skills and MCP servers. I wanted a fully working one to explain how a harness is built, down to Anthropic's server-side compaction. Surprisingly, it became the top harness on Claude Haiku. How it works: 🧵
Posted by Paweł Huryn (135.5k followers) 2 h ago · 40 likes · 2.4k views · view the original post on X. Kept by the Dev Radar as AI dev tools. Tools mentioned: mini-harness.
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