If you've gone looking for a place to buy or find AI skills, you've probably landed on one of a few different kinds of sites without fully clocking that they're different categories. That's worth sorting out, because what you actually get depends a lot on which one you're on.
SKILL.md marketplaces
Sites like Agensi sell installable skill files, thousands of them, organized into categories like marketing, business operations, and sales. Real creator economics behind it: a revenue split, payouts, a genuine community of people building and selling these. The catch is what you're buying: a text file meant to be installed into a coding agent like Claude Code or Cursor. Using it means you're already comfortable in that environment, and some skills wrap a separate paid API under the hood, which means a second account and a second bill before you've gotten any value.
Open, free skill directories
Sites like skills.sh take a different approach: no marketplace, no payment, just an index of open-source skills people have published to GitHub, installable with a single command. Real install-count data lives here too, which is genuinely useful for seeing what's actually getting used. Same audience limitation as above, though: this is built for developers working inside a coding agent, not for someone who's never opened a terminal.
Prompt marketplaces
The older category: sites selling individual prompts meant to be pasted into a chat window. Lower barrier to entry than a SKILL.md file, since there's no coding agent required, but the same core issue: what you're buying is someone's writing about how to get a good result, not the result itself, and how well it works still depends on how closely you can reproduce what the seller had in mind.
What's missing across all three
None of these run anything for you. You're buying instructions, then doing the work of setting them up and executing them yourself against your own actual input, whether that's a five-dollar prompt or a SKILL.md file with a whole API integration behind it. A listing might show a screenshot or an example, but that's still someone else's result on someone else's input, not yours.
Where a runnable skill platform fits
This is the gap Skillyo sits in: instead of a file you install and hope works, a runnable skill is hosted and produces a finished result you can see before deciding it's worth anything. No coding agent required, no separate account for whatever the skill depends on behind the scenes. It's not a replacement for the other categories. Plenty of developers will keep using SKILL.md files inside their own tools, and that's fine. It's a different surface, built for the much larger group of people who want the result without becoming the person who has to configure how to get it.