The Best Claude Skills and How to Use Them

Section 01

What Are Skills?

Skills are free add-ons that teach Claude how to do specific things better. Without skills, Claude is a generalist. With them, it gets much better at specific tasks.

When you install a skill, you're giving Claude a set of rules and tips for a specific type of work. A marketing skill teaches Claude copywriting formulas that actually work. A design skill teaches it how to build good-looking websites and apps. A video skill teaches it how to create animations properly.

Think of it like hiring a specialist instead of a generalist. Claude already knows a lot, but a skill takes it from "decent" to "actually really good" in a specific area.

Skills work across Claude Chat (the website at claude.ai), Claude Cowork (the desktop app that can work with your files), and Claude Code (the text-based command tool for building things). The way you install them is slightly different depending on which one you use, but the skills themselves are the same.

Section 02

How to Install Any Skill

Two ways to install skills, depending on how you use Claude.

Method 1: Claude Chat or Cowork (download and upload)

This is the easiest way if you use Claude through claude.ai or the desktop app.

1Find the skill on GitHub. Every skill in this guide has a GitHub link. Go to the repo page.
2Download it as a ZIP. On the GitHub page, click the green Code button, then click Download ZIP.
3Upload it to Claude. In Claude Chat, go to Settings > Customize > Skills. Click to upload the ZIP file. The skill is now active.

Method 2: Claude Code (one terminal command)

If you use Claude Code in VS Code or the terminal, run this:

npx skills add [github-username]/[repo-name]

Restart Claude Code and it loads automatically. You can also run:

npx skills list              # see what you have installed
npx skills find              # search for new skills
npx skills update            # update all your skills

Some skill packs contain multiple skills

A single repo might have 5, 10, or even 40 skills inside it. In Claude Code, use --list to preview what's available, then install specific ones with --skill [name]. In Claude Chat, you can upload the whole ZIP and all the skills inside it become available.

Where to find more skills

The best directories are github.com/VoltAgent/awesome-agent-skills (community list of 1,000+ skills) and skillsmp.com (searchable marketplace). You can also just ask Claude: "Find me a skill for [what you need]."

Section 03

Content and Marketing

These skills make Claude much better at marketing tasks. Writing copy, building landing pages, email sequences, lead magnets, and ad creative.

Marketing Skills by Corey Haines

github.com/coreyhaines31/marketingskills | 40 skills

This is the big one. 40 skills covering copywriting, landing page conversion, email sequences, cold email, pricing strategy, lead magnets, social content, ad creative, launch strategy, referral programmes, content strategy, customer research, marketing psychology, and more. Built by a marketer, not a developer. Each skill is based on a tested marketing formula.

github.com/coreyhaines31/marketingskills

Use when: writing any marketing copy, building landing pages, planning email campaigns, creating ad creative, launching anything.

Marketing Skills by kostja94

github.com/kostja94/marketing-skills | 160+ skills

Even bigger. 160+ skills covering SEO, content strategy, 40+ page-type templates (homepage, pricing page, about page, FAQ page, etc.), paid ads, channel strategies, influencer marketing, and growth frameworks. Goes deeper than Corey Haines on specific page types.

github.com/kostja94/marketing-skills

Use when: you need a specific type of marketing page or want deep SEO + content strategy guidance.

You don't need both

Start with Corey Haines if you want broad marketing coverage. Add kostja94 if you need specific page-type templates or deeper SEO. They complement each other but either one alone is powerful.

Section 04

Writing and Humanizing

If you use Claude to write anything that other people will read, you want these.

Humanizer by blader

github.com/blader/humanizer

This skill removes the tell-tale signs that something was written by AI. It catches 29 specific patterns that make writing sound robotic -- things like overblown language ("revolutionary", "crucial"), AI-favourite words ("delve", "leverage"), too many em dashes and bold text, and filler phrases that say nothing. The best part: you can give it a sample of your own writing and it matches your voice, not just removes AI patterns.

github.com/blader/humanizer

Use when: writing emails, proposals, social captions, blog posts, guides, or anything that needs to sound like a real person wrote it.

Why this one matters

People can tell when something is AI-generated. Not always consciously, but the language has a sameness to it. "Delve", "leverage", "it's important to note", em dashes everywhere. The Humanizer skill is based on Wikipedia's actual "Signs of AI writing" guide. It teaches Claude to avoid every single one of those patterns. I use it on everything I publish.

Doc Co-authoring by Anthropic

github.com/anthropics/skills

Helps you write together with Claude on long documents. Claude edits and refines while keeping your voice consistent. Good for proposals, reports, and guides where you want Claude to help but not take over.

github.com/anthropics/skills (skill: doc-coauthoring)

Use when: co-writing documents where you want to maintain your own voice and structure.

Section 05

Design and Frontend

These skills stop Claude from building things that look like every other AI-built website. They teach it real design principles.

Frontend Design by Anthropic

github.com/anthropics/skills | 277K installs (most popular skill)

The most-installed skill for a reason. It teaches Claude good design instead of the default bland output. Proper spacing, fonts, colour choices, and page layout. If you're building anything people will look at, install this first.

github.com/anthropics/skills (skill: frontend-design)

Use when: building any website, dashboard, landing page, or tool with a user interface.

Web Design Guidelines by Vercel

github.com/vercel-labs/agent-skills | 137K installs

Checks your website against 100+ design and accessibility rules. Things like colour contrast (can people actually read the text?), whether it works on phones, whether you can navigate with a keyboard, and whether screen readers can understand it. Like having someone review your work before you publish it.

github.com/vercel-labs/agent-skills (skill: web-design-guidelines)

Use when: you've built something and want to check it's accessible, responsive, and polished.

React Best Practices by Vercel

github.com/vercel-labs/agent-skills | 176K installs

40+ rules for building React and Next.js apps the right way. (React and Next.js are popular tools for building websites and apps.) You don't need to understand what React is to benefit from this -- Claude just writes better code when it's installed.

github.com/vercel-labs/agent-skills (skill: react-best-practices)

Use when: building any React or Next.js application.

Section 06

Video Creation

Remotion Best Practices

github.com/remotion-dev/skills | 126K installs

Create and edit videos just by describing what you want. 29 rule files covering animations, transitions, captions, sound effects, charts, voiceover, and more. Describe a video in plain English and Claude builds it for you. I have a full separate guide on this one at reallyusefulai.co/guides.

github.com/remotion-dev/skills

Use when: creating explainer videos, social media content, product demos, data visualisations, or editing existing video footage.

Section 07

SEO

SEO and GEO Skills by aaron-he-zhu

github.com/aaron-he-zhu/seo-geo-claude-skills | 20 skills

Keyword research, content writing, technical audits, and rank tracking. Also covers GEO (Generative Engine Optimisation) -- basically how to make your content show up in AI search tools like Perplexity and ChatGPT Search, not just Google.

github.com/aaron-he-zhu/seo-geo-claude-skills

Use when: writing blog posts, creating landing pages, or doing technical SEO audits. Especially useful for making content rank in both traditional and AI search.

Claude SEO by AgriciDaniel

github.com/AgriciDaniel/claude-seo | 19 skills + 12 subagents

A more technical SEO toolkit. 19 skills covering technical SEO, schema markup (the behind-the-scenes code that helps Google understand your pages), backlinks, local SEO, and Google integrations like Search Console and Analytics. Can create PDF and Excel SEO reports. Best if you want detailed technical control over your SEO.

github.com/AgriciDaniel/claude-seo

Use when: running full technical SEO audits, setting up schema markup, or connecting to Google Search Console data.

Section 08

Documents and Data

PDF, Word, Excel, PowerPoint by Anthropic

github.com/anthropics/skills | 4 separate skills

Create, edit, and read documents in the standard office formats. pdf reads and creates PDFs. docx handles Word documents. xlsx works with Excel spreadsheets. pptx creates PowerPoint presentations. Just describe what you want in plain English.

github.com/anthropics/skills (skills: pdf, docx, xlsx, pptx)

Use when: you need to create or analyse documents in standard office formats. Great for proposals, reports, and client deliverables.

Firecrawl

github.com/firecrawl | Web scraping toolkit

Lets Claude visit websites and pull out the information you need. Give it a web address and it grabs the content in a clean, usable format. Useful for researching competitors, pulling content from websites, or gathering data from public pages.

github.com/firecrawl (Claude Code only)

Use when: you need to pull data or content from websites for research, analysis, or content creation.

Section 09

Social Media Publishing

Typefully

github.com/typefully/agent-skills

Write, schedule, and publish posts to X (Twitter), LinkedIn, Threads, Bluesky, and Mastodon directly from Claude Code. Write a post, preview it, schedule it for a specific time -- all without opening a browser. You'll need a free Typefully account and an API key (Typefully gives you one in your account settings).

github.com/typefully/agent-skills

Use when: scheduling text posts to X, LinkedIn, or Threads. Best for written content (not image/video posts).

For Instagram and TikTok

Typefully covers X and LinkedIn. If you need Instagram, TikTok, and Facebook, look into Blotato's MCP server instead. MCP servers are a different type of add-on (not a skill, but a connection to an external service), and they work in Claude Code the same way. I use Blotato for all my Instagram and TikTok publishing.

Section 10

Development Workflow

These are more technical, but worth knowing about if you're building apps or tools with Claude Code.

Superpowers by obra

github.com/obra/superpowers | 15+ skills

A structured workflow that forces Claude to think before building. It goes: brainstorm, then write a spec, then plan, then build. Includes automatic testing, step-by-step debugging, and code review. Stops Claude from rushing into bad code.

github.com/obra/superpowers (Claude Code only)

Use when: building something complex where you want Claude to plan carefully and test its own work. Especially good for apps and automations.

Web App Testing by Anthropic

github.com/anthropics/skills

Automated testing using a real browser. Claude literally opens your app, clicks through it, fills in forms, and checks that everything works -- like having someone test your work before you show it to anyone.

github.com/anthropics/skills (skill: webapp-testing, Claude Code only)

Use when: you've built a web app and want Claude to test it thoroughly before you share it with anyone.

Composio

github.com/composiohq/skills

Connects Claude Code to 850+ external apps -- Gmail, Slack, Notion, Google Sheets, Airtable, and hundreds more. Handles all the login and permissions stuff for you. If you want Claude to read from or write to an external service, this is how.

github.com/composiohq/skills (Claude Code only)

Use when: you need Claude to connect to external tools and services.

Platform-specific skills

If you host your website or app on a specific platform, there are dedicated skills for that: Cloudflare, Netlify, Supabase (databases), Stripe (payments), and Neon (databases). Install the one that matches where you host things.

Section 11

My Recommended Starter Pack

You don't need to install everything. Here are the five I'd start with if I were setting up Claude Code today.

1Humanizer (blader/humanizer) -- Install this first. Everything Claude writes will sound more like a real person. It's the difference between "AI slop" and content people actually want to read.
2Frontend Design (anthropics/skills) -- If you build anything visual (websites, dashboards, tools), this makes the output noticeably better. No more generic-looking AI builds.
3Marketing Skills (coreyhaines31/marketingskills) -- 40 tested marketing formulas. Copywriting, emails, landing pages, lead magnets. Useful for nearly everything.
4Remotion (remotion-dev/skills) -- If you create any video content for social media. Animated explainers, talking head overlays, product demos, data visualisations. All from text prompts.
5SEO and GEO (aaron-he-zhu/seo-geo-claude-skills) -- If you have a website or blog. Covers both traditional Google SEO and the newer AI search optimisation.

How to install these

Claude Chat / Cowork: Visit each GitHub link above, click the green Code button, download the ZIP, then upload it in Settings > Customize > Skills.

Claude Code: Run these in your terminal, one at a time:

npx skills add anthropics/skills --skill frontend-design
npx skills add coreyhaines31/marketingskills
npx skills add remotion-dev/skills
npx skills add aaron-he-zhu/seo-geo-claude-skills

For the Humanizer, download the ZIP from github.com/blader/humanizer and upload it to Claude Chat, or clone it into your skills folder if you use Claude Code.

Skills keep growing

New skills are being published every week. Run npx skills find in your terminal to search for new ones, or check github.com/VoltAgent/awesome-agent-skills for the latest community list. If you find a good one, tell Claude to install it for you.