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Cloud Agents Specs
Claude Code vs. Cursor vs. Codex: Cloud Agents Showdown
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?
New
Building a PDF Invoice Generator using Cursor 2.0 & Composer
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.
New
Pro
Agent OS v2 Demo
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.
New
Implementing Member Profiles and Enhancements
Implementing Member Profiles and Enhancements
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...
Pro
Member Profiles: Design & spec for this new feature
Member Profiles: Design & spec for this new feature
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...
Pro
Spec-Driven Development in the Real World
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...
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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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