Claude Code Skills are one of the biggest productivity upgrades in the entire Claude Code ecosystem – yet it's still massively underutilized by most developers.
Mastering them lets you code faster, automate repetitive work, and become a higher value developer.
The Master Claude Code Skills course now comes packed with 35+ hand-picked Claude Code Skills that extend Claude Code to help you accomplish much more in less time in all the various aspects of software development, from planning and design to parallel agentic coding to debugging and code review.
This is all part of a modern, regularly updated course that teaches you how to unlock the full power of AI-powered coding using Skills and reusable AI workflows to save time and money.
As Claude Code evolves, the course will evolve too – covering new features, best practices, and powerful Skills so you always stay at the forefront of AI-assisted software development.
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This Claude Code command will save you from many painful bugs.
Yes we already know how good Claude Code is at making code work…
But what happens after several prompts, fixes, and changes of direction?
Your working code quietly accumulates duplicated logic, unnecessary abstractions, inefficient operations, and remnants of abandoned approaches.
And this is why the /simplify Claude Code command is so important.
With /simplify, Claude will rapidly review your recent changes, finds opportunities to make them simpler and more efficient, and applies the improvements automatically.
The code becomes easier for both you and your agent to understand — which dramatically reduces the odds of a buggy change being made in the future.
Let’s look at the key things that make /simplify such an invaluable command.
1. Parallel agents attack your code from different angles
This is one thing that really sets it apart — from just asking Claude to simplify your code.
When you trigger /simplify, Claude doesn't just run a one-shot cleanup prompt.
It spawns multiple parallel review agents on the fly — at least 3 — each examining recently modified code from a different angle:
Code reuse and duplication: Finds duplicated logic, redundant abstractions, and opportunities to reuse existing code.
Quality and readability: Looks for unnecessary complexity, deeply nested conditionals, convoluted expressions, poor naming, and code that could be clearer.
Efficiency and footprint: Searches for unnecessary work, dead code, redundant helpers, and potential memory or performance improvements.
Claude combines their findings and applies the resulting improvements.
You’re essentially getting a specialized code-review team dedicated entirely to cleaning up what was just built.
2.
Blu Dot surpasses 2,000% ROAS with self-serve CTV ads
Blu Dot used Roku Ads Manager to drive incredible results for its furniture sales event. Its strategy hinged on custom audiences and retargeting, where intent was strongest.
“Roku has been a top performer,” said Blu Dot’s Claire Folkestad. “We have seen…CPMs lower than any other CTV partner we've worked with.”
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