02/06/2026
A lot of influencers are telling you to download Claude skills from GitHub. I'd think twice before you do.
Three reasons.
First, you have no idea what's inside that file. A skill is a set of instructions Claude follows without question. Hidden instructions AKA Prompt Injection, in there get acted on. Most people can't spot that.
Second, it was built for someone else's business. Their tone, their clients, their way of working. The output will show that.
Third, and this is the real one: building your own skill is where the learning actually happens.
You have to articulate exactly what you want, how you want it, and what good looks like.
That process makes you better at using AI across everything, not just skills.
Claude can guide you through it. You don't need GitHub for that.