Spec-Driven Development with Agent OS

Power your AI-first development process by applying spec-driven development with Agent OS.

Learn the new way to build — Together, Live


This workshop reveals how to harness AI-first development by mastering Spec-Driven Development with Agent OS 2.0. For solo developers or teams, this transforms how you approach every project. Part structured workshop and part open Q&A, get your specific questions answered directly.

Spec-Driven Development creates a systematic approach where specifications drive both human and AI collaboration. See how Agent OS 2.0 implements these principles with real examples you can immediately apply.

In this workshop, you'll learn how to:


  • Write specifications that produce consistent, high-quality AI outputs
  • Implement the core Spec-Driven Development workflow end-to-end
  • Navigate Agent OS 2.0's new features for multi-agent projects
  • Create reusable specification templates that scale across projects
  • Avoid common pitfalls that derail AI-assisted development
  • Build feedback loops that improve specs and AI performance

Move beyond prompt engineering to a proven methodology that makes AI-first development predictable and transformative. This amplifies what you can achieve.

Hosted by Brian Casel


That's me, I'm a full stack software product designer, developer and the creator of Agent OS—an open-source framework for coding agents that’s quickly gaining traction among developers and teams.

On my YouTube channel and my newsletter, I share behind-the-build lessons and experiments from real projects. After years of shipping products and teaching others, my focus is on cutting through the hype and showing practical ways to make AI work in your day-to-day development.




Builder Methods

Training & community for pro software developers building with AI.

Created by Brian Casel (that's me). I'm a career software developer, founder, and creator of Builder Methods and Agent OS, the system for spec-driven development with AI.

© 2025 CasJam Media, LLC / Builder Methods
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