Video Library

Video training, project ride-alongs and guides for building with AI.

Agent OS v3: Leaner & Smarter for How We Build in 2026
Agent OS v3 is here — rebuilt from the ground up for how we actually build in 2026. I stripped out 70% of the framework. What's left: a leaner system for discovering, documenting, and injecting your coding standards into AI-powered, spec-driven development.
Design OS: The Missing Design Process for AI-First Development
Official demo & walkthrough of Design OS - The missing design process for AI-first development.
Using Claude GitHub Actions as a cloud coding agent
Here's a great way to tackle your backlog of GitHub issues by simply mentioning Claude in your GitHub comments. Watch me do this on the builder methods site using the Claude GitHub actions integration.
Pro
Claude Code vs. Cursor vs. Codex: Cloud Agents Showdown
Cloud-based coding agents from Claude Code on the Web, Cursor Cloud Agents, and Codex all promise the same thing: kick off a task, walk away, and come back to a completed pull request. But do they actually deliver? And more importantly, which one fits into your real-world development workflow?
Claude Code Multitasking Made EASY
Claude Code is excellent as an autonomous coding agent. So the obvious next step is to run multiple Claude Code agents in paralell. Simple, right? This video shows you how to use Git Worktrees and my method for automating the workflow for spinning up new worktrees to run multiple Claude Code agents simultaneously.
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Builder Methods

Training and community for developers and founders building with AI.

Created by Brian Casel (that's me) — multi-time founder, product designer, teacher, and the creator behind Builder Methods.

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