Five departments you can staff for free: marketing, social media, design, finance, and legal. Every link in one place, the exact install commands, and the part nobody covers, which is how to make them sound like your business instead of a template.
This is the download sheet. Every link, every install command, and then the customizing.
A skill is a folder of instructions you hand to Claude. Inside it there is a file that says how to do one specific job, the way a good person on your team would do it. You install it once and then Claude knows that job. It is not a prompt you paste in every time and it is not a subscription.
What is wild is how much of this is already built. People who do marketing for a living, people who run social accounts, designers, and Anthropic themselves have all published skill packs for free. Nobody has put them in one place. That is what this page is.
Five departments. Five links. Then the half that actually matters, which is editing them so they know your voice, your prices, your clients, and your rules. A skill you never customized is a smart intern who has never met your business.
One Honest Note About The Number
When I filmed this the marketing pack had 45 skills. 45 plus 17 social plus 5 design packs plus 8 finance plus 9 legal is where 84 comes from. A few days later the marketing pack shipped two more, so the real total today is 86. I am leaving the number alone because that is what I said on camera, but I am not going to print an old count and pretend it is current. Honestly, this is the point. These are maintained, not dumped and left. The marketing repo was updated four days ago. Check back in a month and there will be more.
All five at a glance:
| Department | Pack | Real count today | Who made it |
|---|---|---|---|
| Marketing | Marketing Skills by Corey Haines | 47 skills (was 45) | Third party |
| Social media | Social Media Skills by Charlie Hills | 17 skills | Third party |
| Design | UI UX Pro Max, Taste, and three more | 5 packs | Third party |
| Finance | Finance plugin, knowledge work plugins | 8 skills | Anthropic |
| Legal | Legal plugin, knowledge work plugins | 9 skills | Anthropic |
Two of these five come straight from Anthropic. Finance and legal are official. Marketing, social, and design are built by people in the community, which is not a bad thing, it is just a thing to know. Claude Code's own docs say plugins run with your user privileges and that Anthropic does not review third party ones. Install from sources you can look up. Every repo below has its author's name on it and thousands of people watching it. If you want the full vetting checklist before you install anything, I wrote it here: how to vet a Claude skill marketplace.
Built by Corey Haines, who does marketing for a living. This is the biggest pack of the five and the one with the most stars on it by a mile. It covers ad creative, copywriting, conversion, positioning, launches, SEO, email, and about forty other jobs you would otherwise hire out.
Repo: github.com/coreyhaines31/marketingskills
Two ways to install it. Use the first one unless you have a reason not to.
That is the plugin route. It keeps the pack updated for you. If you would rather have the plain skill files sitting in your own folder so you can read and edit them, use this instead:
The three I would start with:
ad-creative
Concepts, hooks, and angles for paid ads. If you have ever stared at a blank Meta ads manager wondering what to test next, this is the one. It gives you variations to test, not one precious idea.
copywriting
The workhorse. Landing pages, emails, headlines, product descriptions. This is also the first skill you should customize, because copy is where a generic voice is most obvious.
cro
Conversion rate optimization. Point it at a page you already have and it tells you what is leaking. Cheaper than more traffic and faster than a redesign.
Also worth opening early: marketing-plan, lead-magnets, and programmatic-seo. Those three are the ones that produce a whole month of work instead of one asset.
Built by Charlie Hills. Smaller pack, very sharp. Scripting, hooks, thumbnails, captions, repurposing, and analysis of what is already working.
Repo: github.com/charlie947/social-media-skills
Run Voice-Builder First. This Is The Whole Trick.
There is one skill in this pack called voice-builder and it is not optional. It interviews you and writes two files, an about-me file and a voice file. Every other skill in the pack reads those two files. If you skip it, all sixteen of the others produce the same generic content anyone else would get. If you run it, the whole pack starts sounding like you. It takes about ten minutes and it is the single most useful tip on this page.
Then these two:
reels-scripting
You hand it an outlier Reel, meaning one that clearly outperformed everything around it, and it works out why the structure worked and writes you a script in that shape about your own topic. This is the closest thing to a repeatable content engine in the pack.
youtube-thumbnail
Thumbnail concepts and text, which is the part most people spend zero minutes on and then wonder why nobody clicked.
The two from the video: UI UX Pro Max at github.com/nextlevelbuilder/ui-ux-pro-max-skill, and Taste at github.com/Leonxlnx/taste-skill. Taste has quietly grown into 14 skills, not one.
I already broke down all five design packs, what each one is good at, and which to install first, in a full guide: 5 free AI design skills. Go there for design, it is all there.
This one is official. It lives inside Anthropic's own knowledge work plugins repo, which was updated today. Eight skills, and they are not toy skills, they are the actual close and reporting workflow a finance team runs.
Repo: github.com/anthropics/knowledge-work-plugins
All eight: audit-support, close-management, financial-statements, journal-entry, journal-entry-prep, reconciliation, sox-testing, variance-analysis.
One thing that trips people up: the commands from this pack are namespaced. You type /finance:variance-analysis, not just the skill name. The prefix tells you which plugin it came from.
The three that matter most for a small business:
Why This One Is Different
Finance and legal are the two departments where a wrong answer costs real money. These two are the ones Anthropic built and maintains itself. If you only install one thing off this page, make it the knowledge work marketplace, because it gets you both.
Same repo as finance. Which means if you installed finance a minute ago, you already added the marketplace and you skip that step entirely. One marketplace, two plugins, seventeen skills. That is the single best trade on this page.
Repo: github.com/anthropics/knowledge-work-plugins/tree/main/legal
All nine: brief, compliance-check, legal-response, legal-risk-assessment, meeting-briefing, review-contract, signature-request, triage-nda, vendor-check.
The three a solo business owner will use most:
Say It Plainly
This does not replace a lawyer. It replaces the hour you spend not understanding the contract before you send it to your lawyer. Use it to arrive prepared and to catch the obvious stuff. Anything real still goes to a person with a license.
Installed and untouched, these are good. Customized, they are yours. The gap between those two is about twenty minutes per skill.
And this is not me being clever. Anthropic's own readme for the finance and legal plugins says it out loud. They call the skills "generic starting points" and tell you to "drop your terminology, org structure, and processes into skill files." Customizing is not a hack. It is the intended workflow.
Read This Before You Edit Anything
Copy the skill first. Do not edit it where it lives. When a plugin updates, it overwrites its own cache, and your edits are gone with no warning. Copy the skill folder out, then edit the copy.
Step One
Copy the skill folder somewhere safe
Two homes to choose from. Personal is ~/.claude/skills/name/ and it works in every project on your computer. Project is .claude/skills/name/ inside one project folder, and it travels with that project, so your team gets it too.
Use personal for your voice and your business rules. Use project for anything specific to one client or one site. If a personal and a project skill have the same name, the personal one wins. The full order is enterprise, then personal, then project.
Step Two
Know which name is the command
This one catches everybody. The folder name is what you type, not the name written inside the file. If the folder is called copywriting, that is the skill. Rename the folder and you renamed the command.
Step Three
Open SKILL.md, because it is always SKILL.md
Every skill in every pack on this page has one file at its heart, called SKILL.md. Same name every time. That is the whole thing you are editing.
At the top there is a small block between two lines of dashes. That is the frontmatter. Every field in it is technically optional, but the description is the one that matters, because that short sentence is how Claude decides whether to reach for this skill on its own. Leave it alone unless you know what you are changing. Everything below the dashes is fair game.
Step Four
Let Claude do the editing
You do not have to hand write any of it. Open Claude Code in the folder and ask. Here is the ask, close to word for word:
Swap the skill name and the voice description for yours. Then read what it wrote. You are the editor, it is the typist.
What to actually swap, department by department. This is the part generic advice skips.
Marketing
Your brand voice, your actual offers and what each one costs, and who you sell to. Write the customer down properly: what they do, what they already tried, what they are afraid of. Most of the flat output from these skills comes from Claude guessing at a customer you never described.
Social media
Run voice-builder before you touch anything else, then edit what it produced. After that, add your hook preferences and your formats. Which platforms you post on, how long your videos run, whether you talk to camera or do voiceover, and the openers you will not use.
Design
Your brand tokens. Hex codes, fonts, spacing, corner radius, the components you reuse. Paste them in once and every design skill stops inventing a new brand every time you ask.
Finance
Your chart of accounts, your fiscal calendar, and the format you actually report in. If your year does not start in January, say so. If you report monthly to one investor and quarterly to yourself, say that too.
Legal
Your jurisdiction, your contract playbook, and your risk thresholds. The playbook is just the list of terms you accept, the ones you push back on, and the ones that are a hard no. Write it once and review-contract gets ten times sharper. And again: this does not replace a lawyer.
If you want the generic version of customizing, meaning how plugins and skills work in general, I have that too: the Claude plugins guide and how to customize a plugin for your job.
Do This First, In This Order
1. Add the Anthropic marketplace: /plugin marketplace add anthropics/knowledge-work-plugins.
2. Install finance and legal off it. Two commands, seventeen skills, official.
3. Add the marketing pack and the social pack.
4. Run voice-builder before you use a single other social skill.
5. Copy one skill into ~/.claude/skills/ and customize it. Just one. Make it copywriting.
That is your afternoon. Five departments, staffed, for zero dollars.
© 2026 Mariah Brunner. All rights reserved.