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Claude and its skills — a five-section visual primer

Visual primer

Claude, and its skills.md.

Claude shows up across chat, code, design, browser, and desktop. A skill is a folder of your preferences — Claude reads it on demand so the same job comes out the same way every time.

Page 1 of 3 — A skill captures your preferences

01 / 03 · What & why

01What & why

A skill captures your preferences.

Inside the folder, a SKILL.md says when to use it. Scripts, templates, and references sit alongside. When a request matches, Claude reads the rest — so the same job comes back the same way every time.

WITHOUT A SKILL "make a budget spreadsheet" Claude RESULT Plain values typed into a .xlsx. No formulas. just the model, guessing at "good" WITH THE xlsx SKILL "make a budget spreadsheet" Claude SKILL.md use SUM(), freeze header, currency formatting… RESULT Real spreadsheet: SUM formula in B4, currency column, frozen header. model + your playbook for "good"

Without a skill, the model is smart but generic — it doesn't know your house style, your team's checklist, your formatting rules. With one, it doesn't have to guess. Write down what "good" looks like once, drop the folder in, and every subsequent ask comes back the same way.

Cheaper than retraining. Cheaper than redoing it every time.

Page 2 of 3 — How to actually use a skill

02 / 03 · In practice

02In practice

Triggered by description. Or by name.

Most of the time, Claude picks the right skill from your phrasing. Type /skill-name when you want to be explicit — same result, more direct.

claude — cowork
› /style apply
✓ loaded skill: writing-voice
› draft a reply to Sam about the Q4 results
Hey Sam — quick Q4 read: sentiment up 14%,
retention's the real story. Pulling the chart now.
— written in your voice, no preamble, action-first.

Usually the description in SKILL.md matches your ask and Claude loads it on its own. The slash command is for when you want to be sure, or when two skills could fit.

Skills are stored locally. They don't travel between machines unless you copy the folder.

Page 3 of 3 — A few skills people are building

03 / 03 · Examples

03Examples

A few skills, in the wild.

From personal habits to team-wide playbooks — the same shape, different jobs.

YOUR
VOICE
Writing-style skill
Drop your style guide into SKILL.md. Type /style apply before drafting an email or post and Claude writes the way you do — same rhythm, same hedges, same em-dashes.
/style apply · tone preserved
RESEARCH
& SCRAPE
Source-aware browsing skill
Teach Claude which sites you trust for which topics, and how to extract what you care about. "Pull the latest from my usual sources on X" stops being a chore.
/scrape · routes through Chrome
DESIGN
SYSTEM
Brand colors & type skill
Drop your tokens, fonts, spacing rules into a folder. Every slide, doc, or generated image auto-conforms to the brand — no more fixing one-off color picks.
applied to pptx · docx · images
CODE
REVIEW
Team checklist skill
Encode your team's review standards — security checks, testing rules, naming conventions — in one folder. Claude applies the same checklist to every diff.
/review · consistent across reviewers

If you can describe how you do it, you can ship it as a skill.