What Are Claude Skills? A Beginner’s Guide (2026)

Claude Skills are reusable packages of instructions, scripts and templates that Claude loads on demand to do specialised tasks — like building Excel spreadsheets, PowerPoint decks, Word documents and PDFs straight from a conversation. This guide explains what Skills are, the ready-made ones, how they work, and how to use them.

What are Claude Skills?

A Skill is a bundle of expertise that turns Claude from a generalist into a specialist for a specific task.

Each Skill packages instructions, and often scripts, templates and reference material, into one reusable unit.

Claude loads a Skill only when the task calls for it. The rest of the time it stays out of the way, so your prompts don’t get bloated.

The result: consistent, high-quality output for repeatable jobs — without re-explaining the same steps every time.

The pre-built Claude Skills (Excel, PowerPoint, Word, PDF)

Anthropic ships ready-made Skills for the most common document tasks. You don’t have to build anything to use them.

• Excel — create spreadsheets, add formulas and build charts.
• PowerPoint — generate formatted presentations from your content.
• Word — produce polished, formatted documents.
• PDF — create and work with PDF files.

The magic is that Claude produces the real file — a working .xlsx or .pptx you can download — not just a description of it.

How do Claude Skills work?

Under the hood, a Skill is simply a folder.

Inside is a required SKILL.md file that describes what the Skill does and when to use it. It can also include a scripts/ folder for code, a references/ folder for documentation, and an assets/ folder for templates.

Claude reads the short description by default, then loads the full Skill only when a task matches. This “load it when needed” approach is called progressive disclosure.

It keeps Claude fast and focused while still giving it deep, specialised ability on demand.

How to use Claude Skills

You can use Skills in three places:

• The Claude app — the easiest way. Open the tools menu, choose a Skill, drag in your files, and Claude produces the result with a download button.
• Claude Code — Skills are available to your coding agent for specialised workflows. See our Claude Code guide.
• The API — enable Skills in your own app to generate documents programmatically. See our Claude API guide.

In the app, most people just need Code Execution and Skills turned on — then it’s point, drag and download.

Why do Claude Skills matter?

Skills solve a real problem: getting consistent, expert output for repeatable tasks.

Without them, you’d re-explain your format and steps every single time. With a Skill, that know-how is packaged once and reused.

They also produce genuine deliverables — real Office files — which turns Claude from a chat tool into something that finishes work.

And because a Skill is shareable, a whole team can use the same trusted workflow.

Custom Claude Skills: build your own

The pre-built Skills are just the start. You can create your own for any repeatable task.

To build one, you make a folder with a SKILL.md describing the task, and add any scripts, templates or references it needs.

For example, a company could build a Skill for its branded report format, its invoice template, or its data-cleaning process.

Once built, anyone with the Skill gets that expertise instantly — no prompt engineering required.

Real examples of Claude Skills

• Build a financial model in Excel with formulas and charts from raw numbers.
• Turn notes into a deck — a formatted PowerPoint in your style.
• Generate a report as a clean Word or PDF document.
• Apply a brand template so every document looks consistent.
• Automate a routine task your team does the same way each time.

If a task has a repeatable shape, it’s a good candidate for a Skill.

Skills vs tools vs MCP: what’s the difference?

These three often get confused, but they do different jobs.

Tools let Claude take an action (call a function, run code).

MCP is the standard for connecting Claude to external systems and data. See our MCP guide.

Skills are packaged know-how — instructions and templates that tell Claude how to do a specialised task well. They work alongside tools and MCP, not instead of them.

Best practices and limitations

Skills are powerful, but a few things help you get the most from them.

• Write a clear SKILL.md. A good description helps Claude know when to use it.
• Keep each Skill focused. One job per Skill beats a giant do-everything Skill.
• Review the output. Skills speed up work, but you should still check the result.
• Mind requirements. Document Skills usually need Code Execution enabled.

Treat a Skill like a trusted template: a huge time-saver, but still worth a quick human check.

A quick walkthrough: making a spreadsheet with the Excel Skill

Say you have a messy list of sales figures and want a clean report.

You open the Claude app, choose the Excel Skill, and drag in your data.

You ask for a summary with monthly totals and a chart. Claude processes the file and builds the spreadsheet.

A moment later you get a preview and a download button — a finished .xlsx, with no formulas typed by hand.

How much do Claude Skills cost?

There’s no separate charge for Skills — they come with your Claude plan.

The pre-built document Skills need Code Execution, which is available on paid plans, so Pro is the practical starting point.

On the API, you pay the usual per-token rates for the work the Skill does. See our Claude pricing guide for the details.

Who benefits most from Claude Skills?

• Analysts — turn raw data into Excel models and charts fast.
• Marketers — spin up decks and one-pagers in minutes.
• Finance teams — build reports and spreadsheets consistently.
• Consultants — produce branded documents on repeat.
• Developers — package repeatable workflows for a whole team.

Anyone who makes the same kind of document again and again will feel the benefit quickly.

The growing Claude Skills ecosystem

Skills aren’t limited to Anthropic’s four pre-built ones.

A community ecosystem has grown around them, with public collections of ready-made Skills shared on places like GitHub.

That means you can often find a Skill someone has already built for your task, rather than starting from scratch.

As more people share Skills, the library of things Claude can do out of the box keeps expanding.

Do Claude Skills work with other apps like Canva?

Yes — Skills aren’t limited to Microsoft Office formats.

Because a Skill is just packaged instructions and scripts, one can be built to work with many tools and services.

People have created Skills that produce or automate work in design tools, data platforms and more, well beyond the four pre-built ones.

Claude Skills, Cowork and Artifacts: how they fit together

Claude has a few features that overlap in people’s minds, so here’s the quick distinction.

Skills are packaged expertise for specific tasks. Artifacts are the editable outputs Claude builds beside the chat. Cowork is a more hands-on collaborative mode.

They work together — a Skill can do the specialised work, and the result can appear as an Artifact you refine.

Tips for building great custom Skills

• Describe the “when” clearly. A precise SKILL.md helps Claude pick the right Skill.
• Include templates. Add your real formats so output matches your standards.
• Keep scripts small and tested. Reliable scripts make the Skill dependable.
• Version and share. Store Skills in a repo so your team stays in sync.

A well-built Skill pays for itself every time someone reuses it.

How to get started with Claude Skills

1. Open the Claude app on a plan that includes Skills.
2. Turn on Code Execution and Skills if they aren’t already enabled.
3. Pick a pre-built Skill — try Excel or PowerPoint first.
4. Drag in your files or data and describe what you want.
5. Download the result and refine your request if needed.

Once you’re comfortable, explore custom Skills or use them via Claude agents for automated workflows.

Disclosure: some links in this article are affiliate links. If you buy through them we may earn a commission at no extra cost to you. We only recommend tools we’d use ourselves.

How are Skills different from just asking Claude?

You can ask Claude to make a spreadsheet without a Skill, but results vary and you re-explain the format every time.

A Skill bakes in the process and templates, so you get consistent, higher-quality output on every run.

It’s the difference between giving fresh instructions each time and handing Claude a proven playbook.

Are Claude Skills safe to use?

The pre-built Skills from Anthropic are safe to use as intended.

With custom or community Skills, apply the same care as any downloaded code — a Skill can include scripts, so only run ones from sources you trust.

And review the files a Skill produces before you rely on them for anything important.

Frequently Asked Questions

What are Claude Skills in simple terms?

Claude Skills are reusable packages of instructions, scripts and templates that Claude loads only when a task needs them. They let Claude do specialised jobs well — like creating Excel spreadsheets, PowerPoint decks, Word documents and PDFs from a simple conversation.

What pre-built Skills does Claude have?

Anthropic provides ready-made Skills for Excel, PowerPoint, Word and PDF. With them, Claude can generate real, downloadable files — spreadsheets with charts, formatted presentations and polished documents — without you building anything.

How do I use Claude Skills?

In the Claude app, open the tools menu, choose a Skill, drag in your files and describe what you want; Claude produces the file with a download button. Skills are also available in Claude Code and through the API for developers.

Can I create my own Claude Skill?

Yes. A Skill is a folder containing a SKILL.md file that describes the task, plus optional scripts, templates and reference files. You can build custom Skills for any repeatable task, like a branded report format or a data-cleaning workflow.

What’s the difference between Skills and MCP?

Skills are packaged know-how that tells Claude how to do a specialised task. MCP is the open standard that connects Claude to external tools and data. They complement each other — Skills provide the expertise, MCP provides the connections.

The bottom line

Claude Skills turn a general assistant into a specialist for the tasks you repeat. The pre-built Excel, PowerPoint, Word and PDF Skills alone make Claude far more useful for everyday work.

Start with the ready-made ones, then build custom Skills as you find repeatable jobs worth packaging. For the full toolset, see our complete Claude AI guide.