What's a Claude Skill?
A Claude Skill is a curated knowledge pack you can hand to Claude before you ask it something. They function as a specific set of instructions and expertise built in ahead of time, so you can say goodbye to writing repetitive and meticulously crafted prompts every time.
In practice, that's the difference between spending ten minutes explaining your situation and hoping for a decent answer, and getting a specialist-level one in ten seconds because the groundwork's already done.
Speaking of prompts, what prompted these?
At OneSignal, we talk to mobile marketing teams every day, and the same two problems come up constantly: copy that leans on pressure and manipulation because it's the fastest habit to reach for, and the recurring "what do I even send this week" blank-page problem.
Instead of writing another blog post about best practices, we packaged what we've learned here. Everything from published behavioral science, to our own aggregate engagement data, and years of watching what actually works across thousands of mobile apps folded into these Skills anyone can use.