Brian Casel - Videos
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3 USEFUL New Features in Claude Code 2.0 #coding #ai #claudecode #anthropic
Claude 2.0 dropped! Here are 3 features I actually use on a DAILY basis. 👋 Drop a comment with your questions and requests for upcoming videos! 👇 **Your Builder Briefing (free)** https://builder...
Codex CLI first impressions (switch from Claude Code?) #coding #ai #codex #openai
My first impressions of using Codex CLI as a daily Claude Code user. 👇 **Your Builder Briefing (free)** https://buildermethods.com - Your free, 5-minute read to keep up with the latest tools & wor...
3 New Features in Claude Code 2.0 I use DAILY
Claude Code 2.0 dropped with Sonnet 4.5, a VS Code extension, and new features. But I've been testing these updates in production for weeks to see what's actually useful for professional developers...
Is Codex CLI Worth The Switch (from Claude Code)?
I've been a daily Claude Code user for most of this year but I wanted to give Codex CLI a look, since OpenAI has been making an obvious effort to win back developers. NOTE: I recorded this video t...
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...
Day One with Claude Code (Start Here)
So today's the day. You've been hearing about Claude Code for weeks. Now it's time for you to see what all the fuss is about. Here's what most newcomers get wrong about Claude Code. It's not about...
Agent OS: The System for Spec-Driven Development
Two months ago, I released Agent OS—a free, open-source system that brings spec-driven development to your coding agents. It teaches agents to build like YOU build. The initial response has been i...
Finding FLOW with AI Coding Agents
Remember what FLOW used to feel like? Hours would disappear. It felt amazing—that perfect flow state where you're crafting software with your hands. Sure, we're building much faster with AI now.....
Solving Claude Code's (Short-Term) Memory Problem
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 mark...
The Missing SYSTEM Your Coding Agents Need
Our AI coding agents are capable of so much more. If we want our coding agents to be successful on the first shot, not the fifth, then it's time we adopt Spec-Driven Development. This video unpac...
Cursor Keyboard Shortcuts for POWER Users
As professionals, we have to master our tools. My daily driver for coding and building with AI? Cursor (a fork of VS Code). So I'm sharing all most frequently used Cursor keyboard shortcuts, how...
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? Well, it's not quite as simple as it sounds. B...
The Case for Claude Code
Claude Code is having a moment right now. If you've been using other AI coding tools, like Cursor, you might be wondering, is Claude Code actually better? In this video I unpack 2 big questions a...
CRUSH Your Backlog With Background Agents in Cursor
Background Agents in Cursor and OpenAI Codex are here to help us off-load tasks from our backlog so that we can ship our apps faster. This video breaks down how to use the new Background Agents fe...
How Vibe Coding Goes PRO
Did you try vibe code with Cursor, etc. but it just didn't stick for you? Or maybe you're still an AI coding skeptic? It's time to take building with AI seriously. There's a new workflow and app...
Instant OpenAI and Claude Integrations in Your Rails Apps
See how easy it is to integrate the OpenAI and Anthropic Claude APIs in your Rails applications using the Instrumental Components library and starter kit for Rails. Grab your launch discount for I...
Adding Search to Any Rails Application
See how I add a search feature and wire it up in every Ruby on Rails app I build AND made it a re-useable component for you to use with Instrumental Components (https://instrumental.dev). I walk t...
Building a COMPLETE SaaS Billing System w/ Rails and Stripe
Watch me build a complete SaaS billing system in a Rails app in just a few minutes using Instrumental Commerce (which is included in Instrumental Components). Get your copy of Instrumental Compone...
How I Build Rails Apps FAST
As a full stack developer using Rails for all of my projects, I find that using my components helps me ship high-quality Ruby on Rails applications—packed with essential features—fast, so that I ca...
AI isn't my replacement. It's more.
I was slow to adpot AI in my day-to-day creative and software development workflow. That's changed. Here's my unexpected path to seeing AI not as my replacement, but something more... 00:00 The ...
Hotwire Gotchas #rails8
https://instrumental.dev 👉 Join our community and get access to the Instrumental Components library for rapidly building great products with Ruby on Rails and TailwindCSS. https://instrumentalprod...
The hard thing about hard decisions
Big decisions shape the direction of your career, your business—even your life. In this video, I share what I’ve learned from 18 years of running a bootstrapped business and navigating tough choice...
Account Switching
https://instrumental.dev 👉 Join our community and get access to the Instrumental Components library for rapidly building great products with Ruby on Rails and TailwindCSS. https://instrumentalprod...
Why I build products that scratch my itch
After years of customer discovery and customer validation, I’ve come full circle. In this video, I share why I now build products that scratch my own itch and how that simple shift leads to better ...
Teams & Accounts
https://instrumental.dev 👉 Join our community and get access to the Instrumental Components library for rapidly building great products with Ruby on Rails and TailwindCSS. https://instrumentalprod...
How I use Linear to manage my SaaS
Managing a SaaS product takes more than just shipping features. In this video, I’ll show you how I use Linear to manage my roadmap, track bugs and customer requests, and keep my small team moving f...
Cursor Updates #cursorai #vibecoding
https://instrumental.dev 👉 Join our community and get access to the Instrumental Components library for rapidly building great products with Ruby on Rails and TailwindCSS. https://instrumentalprod...
Cursor User Rules #cursorai #vibecoding
https://instrumental.dev 👉 Join our community and get access to the Instrumental Components library for rapidly building great products with Ruby on Rails and TailwindCSS. https://instrumentalprod...
Build Rails Apps FAST Using Components
Here's a preview of Instrumental Components for Ruby on Rails. Get early access here: https://instrumental.dev Watch me spin up a new SaaS app with all the table stakes like signup, authenticati...
The User Menu
https://instrumental.dev 👉 Join our community and get access to the Instrumental Components library for rapidly building great products with Ruby on Rails and TailwindCSS. https://instrumentalprod...
Changing the Instrumental Layout
https://instrumental.dev 👉 Join our community and get access to the Instrumental Components library for rapidly building great products with Ruby on Rails and TailwindCSS. https://instrumentalprod...
“Vibe” Coding vs… Coding in Cursor
Vibe coding? Not quite. I prefer building real products with AI. In this video, I’ll show you how I use Cursor to build Instrumental Components in Ruby on Rails—focusing on targeted prompts, smart ...
Building a Rails Admin Dashboard to Manage Your Users
Every SaaS app needs an admin dashboard. In this video, I’ll show you how I build them in Ruby on Rails, powered by Instrumental Components to make setup fast and flexible. You’ll see how to manage...
Team Accounts in Rails: Don’t Overcomplicate it!
Managing team accounts in Ruby on Rails 8 can be complex, but I’ve streamlined the process using my Instrumental Components library. I’ll walk you through handling user authentication, invitations,...
Better Navigations in Rails Applications
Navigation is a core part of any Rails app, and I have a few key elements I include in every project. I’ll walk you through my approach to designing and maintaining primary navs, user menus, breadc...
My Tailwind CSS Philosophy #tailwind #tailwindcss #css
https://instrumental.dev 👉 Join our community and get access to the Instrumental Components library for rapidly building great products with Ruby on Rails and TailwindCSS. https://instrumentalprod...
Keyboard Shortcuts #cursorai #cursor
https://instrumental.dev 👉 Join our community and get access to the Instrumental Components library for rapidly building great products with Ruby on Rails and TailwindCSS. https://instrumentalprod...
AI Hesitation #cursorai #coding
https://instrumental.dev 👉 Join our community and get access to the Instrumental Components library for rapidly building great products with Ruby on Rails and TailwindCSS. https://instrumentalprod...
Rails GET requests with Hotwire Gotchas!
When building with Ruby on Rails and using Hotwire & Turbo, you probably come across many “gotchas”. One of those gotchas is handling (seemingly) simple GET requests using a turbo_stream response....
Coding a Block Editor #rails8
You can see updates for this project here 👉 https://instrumentaleditor.com/ https://instrumental.dev 👉 Join our community and get access to the Instrumental Components library for rapidly buildin...
Block Editor for #rails8
You can see updates for this project here 👉 https://instrumentaleditor.com/ https://instrumental.dev 👉 Join our community and get access to the Instrumental Components library for rapidly buildin...
Am I building a block editor for Rails?
I'm building a block editor for Ruby on Rails. It’s still a work in progress, so follow along as I refine and expand its capabilities. So far, it supports keyboard shortcuts and markdown, and I’ll ...