I Applied Anthropic's Internal Skills Playbook to My Projects - Here's What Changed

@trq212 recently published "Lessons from Building Claude Code: How We Use Skills", Anthropic's internal playbook for how they build and use Skills in Claude Code. I don't come from a software engineering background. I work in accounting, and I use Claude Code across projects ranging from helping with my bookkeeping automation, AWS Lambda (which I used for the AWS 10,000 Ideas competition) recently to backends to mobile appications (I was very excited to publish my first application to the Google and iOS stores :D). Skills sounded useful but I never knew how to implement them appropriately or how to structure them properly. I spent an afternoon applying every recommendation from the article to my own setup across 5 active projects in Claude Code. The following is what I built, what worked, and I recommend you use for your own projects. Let's start with this: Skills are "just markdown files" They're surprisingly not. A skill is a folder. It can contain scripts, config files, reference da