What Is a Skill?

You've seen what Cowork can do with files. It reads them, creates new ones, follows your instructions. That's useful on its own.

But there's a gap between "useful" and "exactly what I needed." When you ask Cowork to summarise meeting notes, you get a summary. It's fine. But it's not the structured action items with owners, due dates, and a follow-up email that you actually wanted.

A skill closes that gap.

What a skill actually is

A skill is a set of instructions that turns Cowork from a generalist into a specialist. It's a zip file you download and install. Inside, there's a text file (called SKILL.md) that tells Cowork exactly what to do, what format to use, and what "good output" looks like for a specific task.

Think of it like giving a smart assistant a detailed playbook. Without the playbook, they'll do their best and probably get you 70% of the way there. With the playbook, they nail it every time.

Without a skill vs with a skill

Here's a concrete example. You give Cowork a blog post and ask it to create social media content.

Without a skill: You get a generic response. Maybe a LinkedIn post, maybe a tweet. The format varies each time, the tone might not match your voice, and you'll spend time editing.

With the Content Repurposer skill: You get a LinkedIn post, a Twitter thread, an email newsletter version, and a short video script. All formatted correctly for each platform, all in a single interactive HTML page with copy buttons. Consistent every time.

Same AI. Same input. Dramatically different output. The skill didn't make Cowork smarter. It told Cowork exactly what you needed.

[SKILL: Content Repurposer]

Skills are simple

A skill is just a folder with a few files:

• SKILL.md: The instructions, written in plain English. This is the core of every skill.
• Scripts (optional): Code that handles calculations or formatting, so the AI doesn't have to guess at maths.
• Templates (optional): Starting points for output structure.

You don't need to write these. You install pre-built skills as zip files. That's it.

Why this matters

If you've played through the Level 1 demos in the game, you saw Cowork handle a website, emails, and data. Those results were decent. Now imagine those same tasks, but with a specialist skill telling Cowork exactly how to handle each one. That's Level 2 in the game, and the difference is obvious.

Skills are what turn Cowork from a clever chatbot into a practical business tool.

Try it in the game

If you haven't played the Level 1 demos yet, do that first. Then move to Level 2, where you'll see the same types of tasks handled by skill-powered Cowork. The before-and-after speaks for itself.