Cursor 2.0 dropped last week, and unlike most recent AI updates, it's actually changed how I work. Two features in particular: Cursor's new Composer model that's 10-50x faster than any other coding model, and parallel agents that finally make running multiple autonomous builds practical. I'll show you Composer building and...
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...
I demonstrate my workflow for running multiple AI coding agents (Claude Sonnet 4.5 and Cursor's Composer 1) in parallel on the same feature, then comparing their work to choose the best implementation. The focus is on solving the practical challenges of reviewing agent work in git worktrees by using a branch-based approach that makes testing, debugging, and merging much more manageable.
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.
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.
In this video, I walk through the implementation of a complex member profile feature for our platform, which includes user-generated usernames, experiences, and interests. After testing, I encountered some issues, particularly with the display and functionality of these features, which I addressed with the help of AI. I also made...
In this video, I’m excited to kick off the development of a new feature for Builder Methods Pro: member profiles. This feature will allow pro members to create and publish their own profile pages, showcasing their expertise, interests, and contact information, while being visible only to other members. I walk...
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...
Claude Code forgetting things? The key is to manage Claude Code's context window—a.k.a. Context Engineering. This video covers how to be more efficient with your context useage, primarily by marking use of Claude Code's new Subagents feature (game-changer!). You'll also uncover a few hidden gem tips I packed into this one.
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.
