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Mr. Buzzoni@polydao·26.4K followers·3d ago

I'm sharing with you one of the best papers I've read on Harness Engineering it takes apart Claude Code (Opus 5.5), Codex, Gemini CLI and more, and boils all of them down to one line: agent = model + harness what you walk away with: > what a harness actually is > how today's coding agents are built under the hood > the patterns every one of them repeats > where the whole category is heading > their checklist for building your own the model gets the headlines. the harness decides whether the agent works loop and graph engineering on top of it - in my article below

Mr. Buzzoni@polydao·26.4K followers·6d ago

Claude Code tip: before you ship a vibe-coded site, let Opus 5.5 send 𝟱 𝘀𝘂𝗯𝗮𝗴𝗲𝗻𝘁𝘀 through 𝘁𝗵𝗲𝘀𝗲 𝟮𝟬 𝗰𝗵𝗲𝗰𝗸𝘀 and fix everything in one pass: 1. design that holds together • write a DESIGN file first and tie every color, font size, spacing and radius to it • keep the palette tight and the type hierarchy clear • same kind of button, card or input = same look • flat page? add emphasis. crowded page? cut • text stays readable on dark and light backgrounds 2. mobile • nothing scrolls sideways or spills off screen • add a real mobile menu • buttons big enough for a thumb • the layout survives enlarged text 3. every state • loading, empty and error each get a proper screen • every button gets its own hover, pressed and disabled look • form errors show up next to the field, plus submitting, success and failure messages • modals, dropdowns and tabs switch with transitions 4. click it like a real user • run sign-up and checkout from start to finish • hunt down dead button