Agent OS: The System for Spec-Driven Development
Brian Casel
@briancaselAbout
I'm Brian Casel, a full stack product builder who's gone all-in on AI-first development. Building with AI isn't just hypeβit's leverage. It's transforming how we create software products, and I'm here to show you why mastering these techniques now will define who wins in the next decade. Each week, I share: - What's actually changing in our craft (not just what's trending) - Practical AI building techniques you can use today - Real lessons from shipping AI-powered products This isn't about chasing the latest models or buzzwords. It's about understanding how AI fundamentally changes what's possible for builders. If you're a developer, designer, or product builder who wants to stay ahead of the curve without getting lost in the noise, you're in the right place.
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Video Description
Update! Agent OS v2 has been released. All new video demo here: https://youtu.be/kApsR0l9Jfw?si=x7IKxRHLIC3DktuT --- Two months ago, I released Agent OSβa free, open-source system that brings spec-driven development to your coding agents. It teaches agents to build like YOU build. The initial response has been incredible: "This is a game-changer"... "The best context engineering setup I've seen."... "It's great for agents AND my team". I'm continuing to actively update and improve Agent OS! This video is your OFFICIAL walkthrough: How to install Agent OS, how to customize it for your standards, and how to use it to turn unpredictable AI agents into reliable members of your development team. π **Your Builder Briefing (free)** https://buildermethods.com - Your free, 5-minute read to keep up with the latest tools & workflows for building with AI. π **Use Agent OS** (free open source): https://buildermethods.com/agent-os π **Join Builder Methods Pro** https://buildermethods.com/pro - The membership for professionals (and soon-to-be-pros) for building with AI. Private discord. Video training library. Official support for Agent OS. βΆοΈ Related videos: Finding FLOW with AI Coding Agents: https://youtu.be/Ieu2_yulefo Claude Code Multitasking: https://youtu.be/Bz5fyyCa2-0 The Case for Claude Code: https://youtu.be/CTMyzeKKb0o π¬ Drop a comment with your questions and requests for upcoming videos! Chapters: 00:00 Unpredictable Agents 01:01 Agent OS for teams 04:05 How is Agent OS different? 05:23 Installing Agent OS 09:17 Base Installation 11:46 Project Installation 14:41 Agent OS Commands 15:47 Product Mission & Roadmap 19:19 Plan a Feature Spec 24:35 Building a Tasks List 25:16 Test-Driven Development 28:17 Post Implementation Review 31:25 Repeatable Workflow
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