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A free guide by Mariah Brunner ↗ INSTAGRAM ↗ TIKTOK

Free Claude Skills
For Every Department

Marketing, social media, design, finance and legal. The install line for each pack, what to try first, plus a skill that rewrites any of them to fit how your business works.

If you run a business by yourself, these packs are the closest thing to hiring a full staff for $0.

A skill is a folder with a SKILL.md file inside that teaches Claude one job the way a pro would do it. Install it once and Claude reaches for it whenever that job comes up. Every pack below is free and lives on GitHub. I checked the skill counts on November 1, 2026, and these repos add new ones often.

How To Install Any Of Them
  1. In Claude Code. Paste the lines from the box below into a Claude Code session, one pack at a time. Each pack is two lines: add its marketplace, then install it. When it asks, pick "Install for you" so it works in every project.
  2. In the Claude app or Cowork (any paid plan, including Pro, Max, Ultra, Team and Enterprise). Open Customize, then Plugins, Add, Add marketplace, and under Add from a repository paste the repo name from the card (like coreyhaines31/marketingskills). Finance and Legal are Anthropic’s own, so they also show up on the Discover tab. In Cowork, open the Cowork tab first. (Anthropic’s steps)
Every Install Line (Claude Code)
# Marketing /plugin marketplace add coreyhaines31/marketingskills /plugin install marketing-skills@marketingskills # Social media /plugin marketplace add charlie947/social-media-skills /plugin install social-media-skills@social-media-skills # Design: UI UX Pro Max /plugin marketplace add nextlevelbuilder/ui-ux-pro-max-skill /plugin install ui-ux-pro-max@ui-ux-pro-max-skill # Design: Taste /plugin marketplace add Leonxlnx/taste-skill /plugin install taste-skill@taste-skill # Finance and legal: one marketplace, two plugins /plugin marketplace add anthropics/knowledge-work-plugins /plugin install finance@knowledge-work-plugins /plugin install legal@knowledge-work-plugins

Anthropic builds Finance and Legal. The other three are community packs, so read the install screen, which lists what each plugin adds, before you confirm.

The Five Departments

01

Marketing · 53 skills by Corey Haines

Ad creative, copywriting, landing page conversion, SEO, email sequences, launches, pricing, cold email and more. github.com/coreyhaines31/marketingskills

Try first: product-marketing. It writes one file about your product, audience and positioning, and the other skills read it before they start. Then run copywriting on your sales page.

02

Social media · 17 skills by Charlie Hills

Reel scripts, YouTube thumbnail prompts, hooks, LinkedIn posts, carousels and a post scorer. github.com/charlie947/social-media-skills

Try first: voice-builder. It interviews you, reads 3 to 5 of your posts, and writes an about-me file and a voice file that the writing skills pull from. Then reels-scripting, which turns a Reel that worked into a script in your voice. Paste in the transcript, or add Apify and Gemini API keys and it analyzes the video itself.

03

Design · UI UX Pro Max and Taste

UI UX Pro Max (7 skills) is a searchable library of 79 UI styles, 192 color palettes and 74 font pairings. It needs Python 3 on your computer. github.com/nextlevelbuilder/ui-ux-pro-max-skill

Taste is now one big skill (v2) built so AI designs stop looking like AI designs. It picks an art direction, pulls real credited photos from open collections, and checks the page in a real browser before it hands it over. It needs Node 22 or newer and Chrome, Edge or Chromium. Its older style skills moved to their own repos. github.com/Leonxlnx/taste-skill

Try first: point Taste at a page you already have. It audits it in the browser before changing anything. For more design packs I like, see 5 free AI design skills.

04

Finance · 8 skills by Anthropic

Financial statements, variance analysis, reconciliation, month-end close, journal entries, audit support and SOX testing. GitHub or claude.com/plugins/finance

Try first: type /finance:financial-statements and upload a month of exports from your accounting tool. You get a P&L, balance sheet and cash flow, plus a write-up of why each line moved. Have your accountant check anything you file.

05

Legal · 9 skills by Anthropic

Contract review, NDA triage, compliance checks, risk assessment, briefs, vendor checks and templated responses. GitHub or claude.com/plugins/legal

Try first: /legal:triage-nda on the next NDA someone sends you. Its default playbook assumes US law (Delaware, New York, California), so set up your own with the skill below. It helps you show up prepared. It doesn’t replace a lawyer.

Now Make Them Yours

Out of the box these know the job but not your business. Anthropic’s own readme calls its plugins "generic starting points" and says to drop your terminology and processes into the skill files.

Edit A Copy, Never The Original

When a plugin updates, it replaces its own files and your edits are gone. The skill below copies the original into ~/.claude/skills/ under a new name and edits the copy. In Cowork you can also open any installed plugin and click Customize.

This is the skill I use. Hand it any SKILL.md from the packs above. It interviews you about your business, then rewrites the skill around your voice, offers, audience, tools and rules.

↓ Download the skill (.zip)
Skill Customizer (SKILL.md)
--- name: skill-customizer description: Rewrites any downloaded Claude skill (a SKILL.md) to fit my business, voice, offers, audience, tools and rules. Use when I say "customize this skill" or hand over a skill to tailor. --- # Skill Customizer You are an expert editor of Claude skills. Your job is to take a generic skill someone else wrote and turn it into one that works like it was built inside my business. You keep everything that makes the original skill good (its method, steps and quality checks) and replace the generic parts with my real details. ## Step 1: Get the skill - If I pasted a SKILL.md, use that. - If I named a skill and you can read my files (Claude Code or Cowork), find it. Look in ~/.claude/skills/, .claude/skills/ and ~/.claude/plugins/. Show me the path you found before going further. - If you can't find it, ask me to paste the full SKILL.md plus any files it mentions (references, templates, examples). Read the whole skill. Then tell me in 5 bullets or fewer what it does, what it assumes about the user, and which parts are generic placeholders. ## Step 2: Check what I've already written down Before asking anything, look for context files I may already have: about-me.md, voice.md, product-marketing.md (in .agents/ or .claude/), legal.local.md, a brand guide or a CLAUDE.md. Pull every answer you can from them. Only ask about the gaps. ## Step 3: Interview me Ask one short batch at a time, max 5 questions per batch, and wait for my answers. Skip anything this skill doesn't need. Cover: 1. Business: what I sell, to whom, price points, and the one result customers buy from me. 2. Audience: who they are, what they've already tried, what they're afraid of, the words they use. 3. Voice: 3 adjectives, words and phrases I use, words I never use, formatting rules (for example: no em dashes, short sentences). Ask for 2 or 3 real samples of my writing. 4. Offers and links: product names, prices, URLs and calls to action to use exactly as written. 5. Tools: the apps I actually use for this job (email platform, accounting software, design tool, CRM), so the skill references my stack. 6. Examples: one piece of past work I loved and one I hated, and why. 7. Guardrails: things this skill must never do or claim, approval steps, legal or compliance limits. Then ask the questions only this department needs: - Marketing: my positioning in one line, top 3 competitors, what makes me different. - Social: platforms, video length, talking head or voiceover, hooks I refuse to use. - Design: hex codes, fonts, corner radius, spacing, 2 sites whose look I like. - Finance: accounting software, fiscal year start, cash or accrual, the reports I actually read, who reviews them. - Legal: country and state, contract types I sign most, the terms I accept, push back on and refuse. For Anthropic's legal plugin, put this playbook in a legal.local.md file (in .claude/ for Claude Code, or a folder shared with Cowork). ## Step 4: Rewrite Produce a new SKILL.md: - New name ending in -custom (for example copywriting-custom) so it never collides with the original. Rewrite the description so it triggers on the phrases I actually say. - Add a "My business" section near the top with the facts from the interview. - Replace generic examples with examples in my voice about my offers. - Swap tool references for my tools. If the skill relies on a tool or connector I don't have, say so and give a manual fallback (paste or upload). - Add my guardrails as a clear "Never" list. - Keep the original workflow steps, frameworks and checks unless they conflict with my answers. Don't invent facts, prices or results. Leave [brackets] for anything I didn't answer. - Keep it under about 500 lines. Move long reference material into a separate file and link it. ## Step 5: Save and test - In Claude Code: save to ~/.claude/skills/[name]-custom/SKILL.md (copy over any reference files the original needs). Never edit the original plugin files; updates overwrite them. - In the Claude app: give me the finished SKILL.md inside a folder named after the skill, zipped, so I can upload it under Customize > Skills > + > Create skill > Upload a skill. - Show a short summary of what changed. - Run one real test task I choose and show the output. Ask what's off, then fix the skill. - Tip: once the custom version works, suggest I turn off the original so the two don't compete.
  1. The fast way. Hit Copy, paste it into Claude and add one line at the end: "Customize this skill for my business:" then paste the SKILL.md you want to change.
  2. To keep it. In the Claude app, go to Customize, then Skills, click +, then Create skill, then Upload a skill, and pick the ZIP (code execution has to be on under Settings, then Capabilities). In Claude Code, save it at ~/.claude/skills/skill-customizer/SKILL.md. Then say "customize my copywriting skill."

It asks about your business in short batches, writes the custom version, and runs one real test with you so you can fix what’s off.

Want the bigger picture? Read the Claude plugins guide and how to vet a skill before you install it.