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Project-based video training & tutorials for building with AI.

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The Builder Method

The Builder Method is the process-oriented framework that guides everything in Builder Methods Pro—from design through build to refinement. This video establishes the mental model for working productively with AI while keeping your creativity and craft at the center.

New

Pro

Claude Code Skills: What Problem Do They Solve?

Claude just launched Skills across all their platforms, and I've spent a week testing the Claude Code implementation specifically. Do Claude Code Skills actually solve problems developers have, or are they better suited for consumer platforms like Claude.ai? I compare Skills to the developer tools we already use...

New

Building a PDF Invoice Generator using Cursor 2.0 & Composer

In this video, I show how to build a fully automated PDF invoice system in Rails—from Stripe test data to downloadable invoices—using Cursor 2.0 and their new Composer model.

Pro

Video Library Feature: Spec, Implementation, Polish

This video shows my process of spec'ing and implementing the Video Library feature here on buildermethods.com, including implementing filters and ensuring consistent design and use of UI components across both the video library and members directory areas.

Pro

Agent OS v2 Demo

Agent OS v2 is here: It's my free, open-source system that trains your AI coding agents to build like YOU—with ANY AI tool (Claude Code, Cursor, Codex, Gemini, or any other). This is the official demo, walkthrough and overview of what's new in Agent OS V2.

Spec-Driven Development in the Real World

The industry is converging on spec-driven development as the professional way to build with AI, but most tools are missing 3 critical aspects that make it actually work in the real world. I'll show you what's missing from most tools, plus how I solve these gaps with Agent OS to...

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.

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