[Verification] How to use Claude Skills | Eliminating 'repetitive instructions' and even creating slides

Every time you delegate work to AI, you copy and paste the same instructions. Claude Skills is a feature designed to eliminate that hassle.

"Use a polite tone," "Use this format," "These are our rules."

Copying and pasting the same preamble into every prompt. Claude Skills is the feature thatreduces this effort to zero.

This is a feature that creates a gap in work efficiency between those who know it and those who don't. I verified it with the actual machine again. The model used is the latest Claude Fable 5.

Conclusion: In 3 lines

• Claude Skills are "permanent procedure manuals" that you pass to Claude. Once you teach it, it performs work with the same quality every time

• In the verification, just by providing the URL of a published note article, 5 slides were completed in about 4 minutes. It was at a level that could be used without any revisions

• If a prompt is a "disposable instruction," Skills are a "system." This is the turning point

What is Claude Skills?

Claude Skills are "knowledge packages" that teach Claude how to perform specific tasks. The contents include a file with procedures (SKILL.md) and a set of templates or materials as needed. Claude automatically loads the skills related to the task only when necessary.

There are 3 key points.

1. Difference from prompts. Prompts are disposable instructions for each conversation. Skills are permanent procedure manuals. The hassle of writing the same explanation every time disappears.

2. There are 2 types. There are "pre-prepared skills" for tasks like slide or document creation, and "custom skills" where you teach your own work procedures. Starting with the pre-prepared skills is the entry point.

3. Where you can use them. They can be used in the Claude app, Cowork, Claude Code, and via API. This time, I used them from Cowork.

Note: Availability and supported plans are subject to change, so please check the official site (claude.com) for the latest information.

Actually tried it: Slides completed with just the article URL

The verification task is as follows.
Have the slide creation skill turn the previously published note article (the 3 differences of Claude) into a 5-page presentation.

"I wrote the article, but I don't have time to make slides for sharing."
This is a reproduction of a common work scenario.

The instruction text sent:

The first thing that came back was not slides, but a 5-page outline. Once I approved it, it then asked, "What kind of design style would you like?" After I chose a simple, business-like style, it was completed in about 4 minutes.

What surprised me was that it accurately extracted the key points of the article just by being given the URL. I didn't even need to paste the text.

The result was 5 slides with a white base accented by charcoal and terracotta. The title and summary slides had dark backgrounds, while the three content slides used
three different layouts: a card layout, a comparison table, and a process flow, and the "15/15" figure from the verification results was prominently highlighted. There were zero errors in reflecting the article content. Even the source (article title and date) was included automatically.

My rating is "ready to use as-is." As proof, I have attached the actual generated slides to this article.

Open them and see for yourself whether this is 4 minutes of work.

What was unexpected is that it doesn't start creating immediately. After approving the outline and confirming design preferences, it asked for my intentions twice before taking action. The characteristic I saw in the previous Cowork verification—"it won't move until you approve"—was the same here.

Professions where it is particularly effective: IT sales, consultants, recruitment agents

After verifying it, I felt that this feature hits home most for professions that mass-produce documents. This includes IT sales, IT consultants, and recruitment agents.

The reason is simple. The basic documents already exist within the company.
What is missing are supplementary materials for each project, competitor comparisons, and internal promotional materials.
These are documents that are heavy to create from scratch every time, but are definitely effective if made. If you can extract key points and turn them into documents just by providing a URL or source material, you can produce this "one extra slide" in a few minutes. If you teach the format to a Skill, the quality will also be consistent.

How to find work that should be turned into a Skill

Start with "tasks where you are giving the same explanation every time."

This is the answer. Weekly report formats, document templates, internal terminology, and rules. If there is an introduction you are copying and pasting into a prompt every time, that is the primary candidate for Skill-ification.

Conversely, there is no point in turning a one-time task into a Skill. If it repeats, use Skills; if it is a one-time thing, use a prompt. Just remember this distinction.

Who is it for?

People who are suited for it

• People who repeatedly create deliverables in the same format (reports, slides, documents)

• People who want to standardize AI output quality within a team (Skills can be shared)

People who are not suited for it

• People whose AI usage is centered on one-off research and consultations (prompts are sufficient)

Starter Kit Distribution: Have your own Skills starting today

I am distributing a kit so that you don't just read this article and finish there.

It contains four items: an 'Article Writing Skill' that makes it write note articles in a specific format, a 'Slide Composition Skill' that converts documents into 5 slides, a README summarizing the introductory steps for beginners, and a collection of instructions you can copy and paste.

Since SKILL.md is just a text file, if you open it and rewrite it with your own work rules,it becomes your own dedicated skill . Start by placing it as described in the README and copying and pasting the instructions.

Summary: From 'writing' prompts to 'having' a system

The era where the quality of your prompts makes the difference is coming to an end.
The next difference will be made byhow much you have taught the AI about your way of working .

Skills is the first step toward that. First, try using one of the prepared skills to get a feel for the idea that 'if you teach it, it can do it every time.' Those who have a system in place first will get their work done faster.

For those who want to learn more systematically

Once you start using Skills, you will see the importance of 'creating a system that makes it easy for AI to work' rather than 'fiddling with prompts.'

For those who want to learn more practical AI utilization, I also recommend reading one book first to grasp the overall picture. It summarizes the mindset and usage methods for achieving results at work without relying solely on prompts.

From 'using' AI to 'making it work' for your job

For those who have tried Skills and feel that they 'want to incorporate AI into their work more practically,' AI Agent Camp is one option.

You can learn while actually running Claude Code, Cursor, Codex, etc., in a pre-set environment. It is suitable for those who are anxious about setting up the environment on their own or those who want to make AI agents a weapon in their work.

*The above links include affiliate links.

Next Preview

Next time, I will thoroughly explain 'What is Claude?', which serves as the foundation for this series so far. From model types and pricing to what you can do for free, this will be the first article for those just starting out. Please follow me and stay tuned.

• Previous: The difference between Claude and Claude Code

• [Verification] How to use Claude Cowork

• What is Forvio? | Bringing AI more into practice

This article is part of Forvio's hands-on verification series. At Forvio, we don't just report AI news; we verify whether it can actually be used in professional work.