The Builder Method is the overarching framework that will guide much of the content in Builder Methods Pro. This video lays out the mental model and roadmap for how we approach design, development, and refinement in the AI-first era. Rather than teaching static techniques that become outdated as tools evolve, this framework establishes a process-oriented mindset that lets you swap in whatever tools fit your needs while maintaining consistency in how you work.
The core philosophy rests on three big concepts: thinking in terms of inputs, transformations, and output artifacts at every stage; staying tool-agnostic so you can adapt as the landscape shifts; and recognizing that your creativity and craft remain essential—neither hand-coding everything nor blindly vibe-coding represents professional practice. The process itself breaks into three phases: Design (product vision, roadmap, data model, design system, and front-end pages), Build (application shell, milestone planning, and the spec-driven feature development cycle of plan-build-review), and Refine (rapid iterations, bug fixes, user feedback integration, and sometimes complete rebuilds based on what you've learned).
This video serves as the foundation for upcoming content—educational lessons, project demonstrations, and live workshops will all reference and dive deeper into specific sections of what's covered here. Whether you're working with Design OS, Agent OS, Claude Code, Cursor, or whatever new tool drops next month, the Builder Method gives you a framework for thinking about your work that transcends any particular toolset.
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.
