Here's the goal: five skills in Claude Code, installed in about five commands, and you know which one to grab for which job. A skill is just an instruction pack for Claude: a folder with a file called SKILL.md that teaches it one job. All five here are free and open source.
I checked each one at its source on 2026-10-31: who made it, the exact install command, what it actually does, and where the claims are thinner than the hype. Caveman, for one, publishes the numbers where it barely helps, and I'd rather you see those before you install it. Below: a prompt that walks you through all of it, then the manual way, one skill at a time.
Start here: paste this into Claude Code
If you don't have Claude Code yet, do the first two steps under “Before you start” below (Node.js and Claude Code). Then make a folder for your marketing work, start Claude in it, and paste the prompt. It installs all five, runs a first test that sends nothing anywhere, and hands you a cheat sheet.
mkdir -p ~/marketing
cd ~/marketing
claudeHi Claude. Please be my patient setup helper. I run a business and I don't code: one step at a time, tell me exactly what to type or click, and wait for me before the next step.
Goal: install five free skills for you, and teach me when to use each one: Humanizer (GitHub repo blader/humanizer), Skill Creator (anthropics/skills), Grill Me (mattpocock/skills), Caveman (JuliusBrussee/caveman) and Marketing Skills (coreyhaines31/marketingskills). Follow this guide; it's the source of truth for every command:
https://receiptsgroup.com/guides/five-beginner-claude-skills
I started you inside a folder called marketing in my home folder.
Steps:
1. Check my Node.js version with: node --version. It has to be 22.20 or later. If it's older or missing, send me to nodejs.org to download the LTS installer, and wait until I've done it.
2. Install the first four skills for every folder on my computer. One at a time: show me the command, explain each part in plain English, and run it only after I say yes.
npx --yes skills add blader/humanizer -g -a claude-code -y
npx --yes skills add anthropics/skills --skill skill-creator -g -a claude-code -y
npx --yes skills add mattpocock/skills --skill grill-me --skill grilling -g -a claude-code -y
npx --yes skills add JuliusBrussee/caveman --skill caveman -g -a claude-code -y
3. Install Marketing Skills in this marketing folder only, not everywhere, because it's 53 skills. Show me the command and run it after my yes:
npx --yes skills add coreyhaines31/marketingskills --skill '*' -a claude-code -y
4. Check they're all there with: npx skills ls -g, then npx skills ls. Then tell me to type /skills so I can see them myself. If one is missing, tell me to type /reload-skills.
5. First test, nothing leaves this computer: run /humanizer on the made-up paragraph in the guide's "First test" section. Show me the rewrite and the list of what it changed and why.
6. Give me a cheat sheet: one line per skill saying when I'd use it and exactly what to type to start it.
Rules:
- Don't turn Caveman on during this setup. I need full sentences while I'm learning.
- Never install, update or remove a skill without showing me the exact command and getting my yes.
- If a skill wants a key, token or password, stop and tell me. Never ask me to paste one into this chat.
House rules for this setup:
- If you use a technical word, explain it in plain English the first time.
- Ask me before you assume anything about my business, my accounts or my setup.
- Stop and check with me before anything that costs money or spends credits.
- Stop and check with me before anything that sends, posts or publishes to real people.
- Stop and check with me before you delete or overwrite anything.How the pieces connect
This is the manual way: every step and every command. Claude follows it too.
The five don't plug into each other, but they line up nicely on one real job, like a new service page:
- 1Plan itGrill Me (/grill-me)→ a plan with the holes found before anything gets built
- 2Draft itMarketing Skills (/product-marketing once, then /copywriting, /seo-audit, /emails ...)→ a first draft that knows your business
- 3Clean it upHumanizer (/humanizer)→ copy that reads like you wrote it, same facts
- 4Save the repeatSkill Creator (/skill-creator)→ your own skill, so next time it's one command
Caveman sits off to the side: turn it on with /caveman for a long working session when you want shorter answers, and off with “stop caveman”.
Words you'll see
- Skill: a folder with a
SKILL.mdfile: instructions that teach Claude one job. - Slash command: typing
/and a skill's name in Claude Code (like/humanizer) to run that skill on purpose. Most skills also kick in on their own when what you ask fits them. - Terminal: the window where you type commands (Terminal on a Mac, PowerShell on Windows).
- Node.js and npx: Node.js runs JavaScript programs on your computer;
npxcomes with it and downloads and runs a tool in one go. - Skills CLI: the free command-line tool that installs, lists, updates and removes skills. You run it as
npx skills. - Global (
-g) vs project: global means every folder on your computer (~/.claude/skills; the~is your home folder). Without-g, the skill goes in.claude/skillsinside the folder you're in, and only works there. - Tokens and limits: tokens are the chunks of text Claude reads and writes. Longer answers use more of them, and your plan's usage limit runs out faster.
Which one, when
| Skill | Grab it when | How it starts |
|---|---|---|
| Grill Me | Before you build or buy anything: a new page, a new tool, a new process. It asks the questions you skipped. | Only when you type /grill-me |
| Marketing Skills | Writing copy, checking SEO, ads, emails, pricing pages. Run /product-marketing first so the rest know your business. | When your ask fits one, or by name (/copywriting, /seo-audit, /emails) |
| Humanizer | Before anything AI-written goes out with your name on it. | /humanizer, then paste the text |
| Skill Creator | The second time you catch yourself explaining the same job to Claude. | /skill-creator, or “make a skill for ...” |
| Caveman | Long working sessions where you know what you're doing and keep hitting your limit. Not while you're learning. | /caveman; “stop caveman” or “normal mode” ends it |
Before you start: Node.js and Claude Code
Install Node.js (22.20 or later)
Wherenodejs.org/en/downloadThe Skills CLI needs Node.js 22.20 or later. Download the LTS version (the long-term support one) and run the installer. Then open a new terminal window and check the version.
node --versionInstall Claude Code and log in
Skip this if
claude --versionalready prints a version. Claude Code needs a paid plan (Pro or higher); the free Claude plan doesn't include it. The first time you runclaude, it opens your browser to log in.curl -fsSL https://claude.ai/install.sh | bash # open a NEW terminal window, then: claude --versionirm https://claude.ai/install.ps1 | iex # open a NEW PowerShell window, then: claude --version
1. Humanizer: strip the AI tells out of your writing
Made by blader, MIT license. It's built on Wikipedia's Signs of AI writing, the field guide Wikipedia's editors use to catch undisclosed AI text. It checks for 26 patterns, strongest first: “it's not just X, it's Y”, one-line closers like “Let that sink in.”, deep-sounding sayings, staged run-ups, stock AI words like “testament” and “delve”, and dashes everywhere.
Two things I like about it. It doesn't make anything up: if a sentence needs a name, a number or a date it doesn't have, it asks you instead of inventing one. And it's upfront that it edits for readers, not to sneak past AI detectors; its README says detectors still flag most of its output.
Install it
This is the command from Humanizer's own README for Claude Code through the Skills CLI.
npx skills add blader/humanizer --global --agent claude-codeUse it
Type
/humanizer, then paste your text. You get its first rewrite, a short note on anything that still sounds off, and the final version. To make it sound like you, give it two or three paragraphs you wrote yourself first. Point it at a file and it changes the writing only, leaving code, data and links alone./humanizer Here's a sample of my writing for voice matching: [paste 2-3 paragraphs you wrote yourself] Now rewrite this text: [paste the AI text]
2. Skill Creator: turn a job you repeat into your own skill
Made by Anthropic (the company behind Claude), Apache 2.0 license. Its job, in its own words: create new skills, improve existing ones, and test how well they work. You tell it the job, it drafts the SKILL.md, writes a few test prompts, runs them, shows you the results and rewrites the skill from your feedback.
The testing part runs small Python scripts and takes a while. If you just want the skill written, say so: its own instructions tell it to skip the formal tests when you'd rather just work through it together.
Install it
From Anthropic's skills repo, just this one skill.
npx skills add anthropics/skills --skill skill-creator -g -a claude-codeOr the plugin way
Claude Code's own docs install it as a plugin instead (a plugin is a bundle Claude Code installs from a marketplace). Type this inside Claude Code. Pick one way, not both. As a plugin, its slash command gets the plugin's name in front; asking for skill-creator by name works either way.
/plugin install skill-creator@claude-plugins-officialUse it
Tell it the job and where it should live:
~/.claude/skillsfor every folder, or.claude/skillsfor this project only./skill-creator I keep asking you to <the job, e.g. turn my inspection notes into a short homeowner summary>. Make it a skill in ~/.claude/skills. Ask me how I do it, one question at a time, then show me the SKILL.md before you save it. Skip the formal tests for now; we'll try it on one real job together.
3. Grill Me: get your plan questioned before anything gets built
Made by Matt Pocock, MIT license. He calls it one of his most popular skills, and it's for non-code plans too. You tell it what you want to do, and it interviews you in rounds: numbered questions, each with its own recommended answer (so “yes” takes the recommendation), until every decision in your plan is settled. It won't act on the plan until you confirm you're on the same page.
One thing most install videos miss: grill-me is a two-line skill that hands off to a second skill called grilling, which holds the actual questioning. You need both, which is why the command names both.
Install it (both parts)
npx skills add mattpocock/skills --skill grill-me --skill grilling -g -a claude-codeOr the whole set as a plugin
Matt's README installs every one of his skills (27 listed in his README, most of them for software work) as a plugin that updates itself. If you go this way, skip the command above: his README warns that installing both ways gives you every skill twice. His
/setup-matt-pocock-skillsstep is for his engineering skills, not Grill Me.claude plugin install mattpocock-skills@claude-plugins-officialUse it
It only starts when you type
/grill-me: Claude won't fire it on its own. Answer each round; say “yes” to take its recommendations./grill-me I want to <the plan, e.g. add a financing page to my website before spring>. Grill me until the plan makes sense. Don't build or change anything.
4. Caveman: shorter answers, so your limit lasts longer
Made by Julius Brussee, Apache 2.0 license. The joke in the video is “me read file, me fix bug”. The real skill is less cartoon than that: its rules say answer first, cut the greeting and the recap, short sentences, and no “me think” theater. It never drops words like not, never or only, keeps numbers and commands exactly as they are, and switches back to full sentences for security warnings and anything you can't undo. Once on, it stays on for the whole session until you say “stop caveman” or “normal mode”.
Install the skill only
This is the “skill alone” route from Caveman's README, narrowed to the one
cavemanskill (the repo holds many others).npx skills add JuliusBrussee/caveman --skill caveman -g -a claude-codeSkip the full install for now
Caveman's headline install (
npx @caveman-ai/cli@latest) goes a lot further: it sets up every coding app it finds on your computer, sends usage stats by default, and one of its features (Auto, which picks the model for you) needs an account. That's a bigger decision than a beginner needs to make. The skill alone runs on your computer and sends nothing.Turn it on and off
/caveman ... stop caveman
Example (made up). Normal: “Sure! I'd be happy to help. The reason your contact form isn't sending emails is most likely that the email setting was left blank when the form was set up.” Caveman: “Form email not sending. Email setting blank. Fill it in, then send a test.”
5. Marketing Skills: 53 skills for copy, SEO, ads and email
Made by Corey Haines, MIT license. On 2026-10-31 the repo had 53 skill folders: copywriting, SEO audits, ads and ad creative, emails, landing pages (cro), pricing, referrals, schema, cold email and more. The one to run first is product-marketing: it interviews you about your business, customers and how you talk, and saves it as .agents/product-marketing.md in your folder. Every other skill reads that file first, so you stop explaining your business every time.
Fifty-three skills is a lot to load everywhere, so I'd put them in one marketing folder only (no -g). Claude Code loads a short description of every skill into each conversation, and when there are too many it starts cutting descriptions, which makes it worse at picking the right one.
Install them in your marketing folder
Run this from inside
~/marketing.--skill '*'means all of them;-a claude-codemakes sure they land where Claude Code reads them (its README warns they can end up in a folder Claude Code doesn't read otherwise).cd ~/marketing npx skills add coreyhaines31/marketingskills --skill '*' -a claude-codenpx skills add coreyhaines31/marketingskills --listSet up your business once
Start
claudein~/marketingand run this. With no website code in the folder, pick “start from scratch” and it walks through it with you, one section at a time./product-marketing Start from scratch. Ask me one section at a time about my business, my services, my customers and how I talk. Use only what I tell you.Use them
Ask for the job in plain English and Claude picks the skill that fits, or call one by name:
/copywriting,/seo-audit,/emails,/ads,/cro. Some skills point to paid tools for data; the README lists four sponsored partners and says they don't change what the core skills recommend. You don't need any of them to start.
Check they're all there
npx skills ls -g # the four global ones
cd ~/marketing
npx skills ls # the Marketing Skills in this folderThen start claude in ~/marketing and type /skills: you should see all five. Claude Code picks up new skills without a restart. The one exception: if ~/.claude/skills didn't exist when your session started, type /reload-skills once.
First test: a made-up paragraph through Humanizer (nothing gets sent)
This runs on your Claude plan with nothing posted, sent or published. Paste it into Claude Code:
/humanizer
Example (made up): In today's fast-paced world, your roof is more than just a roof. It's a testament to your home's resilience. At Example Roofing Co., we don't just install roofs; we deliver peace of mind, quality, and excellence. Our team is passionate about elevating every homeowner's experience. Let that sink in.Good: it should flag the “more than just a roof” and “don't just install roofs” lines, the “testament” and “passionate about elevating” filler, the “peace of mind, quality, and excellence” list of three and the “Let that sink in.” closer, and the rewrite is shorter and plain. It may ask you for a real fact to put in place of the fluff (how long you've been in business, what you actually install). That's it refusing to make one up. Bad: Claude rewrites it without listing what it changed. Then the skill isn't loading: type /skills and check humanizer is there.
Then try /grill-me on something small you're actually planning. It costs you a few minutes of answering questions, and it's the quickest way to see what it does.
Real use: prompts for real jobs
/grill-me
I want a new page on my website for <the service>. Grill me on who it's for, what it should get them to do, and what proof I actually have. Don't write anything yet.
(after the grilling)
/copywriting
Write the page from what we just settled. Use only facts I gave you: no made-up reviews, numbers or guarantees, and no promises about Google rankings. Then run /humanizer on it and show me both versions./seo-audit
Check <your homepage URL>. Tell me the five fixes that matter most, in plain English, each with who would do it (me, or my web person). Don't change anything, and don't promise rankings./emails
Draft three short follow-up emails for a homeowner who got an estimate but hasn't decided. Sound like me (see .agents/product-marketing.md). No pressure tactics, no fake deadlines. Show me the drafts only; don't send anything./skill-creator
Turn what we just did for the follow-up emails into a skill called estimate-follow-up in ~/.claude/skills. Show me the SKILL.md before you save it./caveman
We're going through my whole services list today. Keep answers short until I say stop caveman.Keep them updated (and remove one)
Skills installed with the Skills CLI don't update themselves. Check now and then:
npx skills check # anything to update?
npx skills update -g # update your global skills
cd ~/marketing && npx skills update -p # update the Marketing Skills
npx skills remove --global caveman # take one off (any skill name works)The Skills CLI sends anonymous usage data by default. Set either of these to 1 to switch it off:
DISABLE_TELEMETRYTurns off the Skills CLI's anonymous usage data
Where: Your terminal, before npx skills (e.g. in your shell profile)DO_NOT_TRACKDoes the same thing; either one works
Where: Your terminal, before npx skillsWhat it costs
| Piece | Plan or license | Price |
|---|---|---|
| Humanizer | Open source (MIT, blader/humanizer) | Free |
| Skill Creator | Open source (Apache 2.0, anthropics/skills) | Free |
| Grill Me + grilling | Open source (MIT, mattpocock/skills) | Free |
| Caveman skill | Open source (Apache 2.0, JuliusBrussee/caveman) | Free |
| Marketing Skills | Open source (MIT, coreyhaines31/marketingskills) | Free |
| Skills CLI and Node.js | Open source | Free |
| Claude Code | Claude Pro (the free Claude plan doesn't include Claude Code) | $20 a month billed monthly, or $200 a year billed up front |
| Claude Code | Claude Max | $100 a month |
| Claude Code | Claude Ultra | $200 a month |
The real cost is your plan's usage limit. Every skill runs on it, and a long Grill Me session or a Skill Creator test run uses a good chunk. That's where Caveman earns its spot. And watch one thing: the skills are free, but a skill can point Claude at a paid tool (an SEO data service, an ad account). If one asks for a key or an account, stop and read why before you go on.
When it breaks
npx: command not found or node: command not found
A skill doesn't show up in /skills
-a claude-code (so it landed where Claude Code doesn't look), or for one project in a different folder. Run npx skills ls -g and npx skills ls, then reinstall with -a claude-code. If ~/.claude/skills didn't exist when the session started, type /reload-skills./grill-me runs but doesn't really grill you
grilling skill is missing; grill-me only hands off to it. Install both: npx skills add mattpocock/skills --skill grill-me --skill grilling -g -a claude-code.Claude never uses Grill Me on its own
/grill-me.Every skill shows up twice
npx skills remove --global <name> takes off the CLI copy.Plugin skills have long names like /humanizer:humanizer
The marketing skills keep asking about your business
/product-marketing once and start claude in the same folder each time; the other skills read .agents/product-marketing.md from there.Claude picks the wrong skill, or ignores one you installed
-g), run /doctor to see what the skill list costs, or call the skill by name.Caveman's answers are too short to follow
/caveman when you're doing work you already know.Caveman turned on when you didn't ask
Humanizer's rewrite still gets flagged by an AI detector
Humanizer asks you for a detail instead of finishing
Skill Creator wants to run tests or Python scripts
Claude Code asks permission before running npx
Claude says you hit your usage limit
/caveman stretches it a bit.That's the five
Five free skills, five commands, and now you know which one to grab: Grill Me before you build, Marketing Skills to draft, Humanizer before it goes out, Skill Creator once you've done it twice, and Caveman when your limit's running low.
Checked on Oct 31, 2026 against
Every claim about a third-party tool in this guide (plans, prices, menu paths, commands, limits) was checked against these official pages on Oct 31, 2026. These screens change often: if something looks different, trust the page over this guide.
- Humanizer (blader/humanizer)Built on Wikipedia's Signs of AI writing, 26 patterns, the Skills CLI install for Claude Code,
/humanizer, voice matching, no invented facts, not for beating detectors, MIT. - Humanizer SKILL.mdThe skill's instructions (version 3.1.0 on 2026-10-31).
- Wikipedia: Signs of AI writingWikiProject AI Cleanup's field guide to spotting undisclosed AI text.
- Skill Creator SKILL.md (anthropics/skills)What it does: create, improve and test skills; the test loop; skipping the formal tests; Apache 2.0 license file.
- Anthropic skills repoPlugin installs from the repo; most skills Apache 2.0.
- Claude Code: SkillsWhere personal and project skills live,
disable-model-invocation, plugin names, no restart,/reload-skills, the skill-creator plugin install, descriptions cut short when there are too many skills,/doctor. - Matt Pocock's skills (README)The Claude Code plugin install, the npx route, one install method per app, grill-me for non-code plans, MIT.
- grill-me SKILL.mdRuns only when you type it; hands off to the grilling skill.
- grilling SKILL.mdThe interview in rounds, a recommended answer per question, no action until you confirm.
- Caveman (JuliusBrussee/caveman)The skill-only install, the full CLI and what it sends, the ten-question output test (6,983 / 4,334 / 4,119 tokens), the rules' ~1,160-token cost, “stop caveman”, Apache 2.0.
- Caveman SKILL.mdThe voice rules, on until “stop caveman” or “normal mode”, full sentences for warnings.
- Marketing Skills (coreyhaines31/marketingskills)53 skill folders on 2026-10-31, the CLI install with
-a claude-code, product-marketing as the foundation, sponsored partners, MIT. - product-marketing SKILL.mdSaves
.agents/product-marketing.md; start from scratch or draft from a codebase. - Skills CLI (vercel-labs/skills)Node.js 22.20 or later, telemetry and how to turn it off.
- Skills CLI reference
addwith--skill(several, or'*'),-g,-a,-y,--list; project vs global;ls,check,update,remove. - Claude Code: Advanced setupInstall commands and which plans include Claude Code.
- Claude: Plans and pricingPro $20 a month billed monthly or $200 a year up front; Max $100; Ultra $200; no Claude Code on Free (checked 2026-10-31).
- Node.js: DownloadThe LTS installer.
