Corey Haines' free pack of 23 agent skills for running a small business yourself: think through decisions, research with sources, keep a second brain, do money check-ins, draft decks, find domains, and hand jobs to Codex or Gemini from inside your agent with castmate.
In short: Corey Haines' free pack of 23 agent skills for running a small business yourself: think through decisions, research with sources, keep a second brain, do money check-ins, draft decks, find domains, and hand jobs to Codex or Gemini from inside your agent with castmate. It is a free skill for people who use Claude Code, Codex or Cursor and want help with work & operations.
Checked on · Added
| Agent / tool | Access / cost | Link |
|---|---|---|
| Claude Code | Paid Claude plan or API | claude.com/claude-code |
| Codex | ChatGPT plan or API | openai.com/codex |
| Cursor | Free tier + paid | cursor.com |
| GitHub repo | Open source · ★ 883 | coreyhaines31/makerskills |
Image: maker-skills.com, shown with credit.
Real videos made with this skill, credited to their creators. Hover to preview.
APP DEMO0:23A 23-second terminal recording: asked to let Gemini write a hero headline, Claude Code loads castmate, tests the Gemini CLI, makes a new branch, has Gemini write the copy into index.html, then reads the diff and reports that only the two placeholder lines changed.
npx skills add coreyhaines31/makerskills /plugin marketplace add coreyhaines31/makerskills /plugin install makerskills@makerskills
Install command copied from the project README. Check the README for the latest version.
Corey Haines' free pack of 23 agent skills for running a small business yourself: think through decisions, research with sources, keep a second brain, do money check-ins, draft decks, find domains, and hand jobs to Codex or Gemini from inside your agent with castmate.
makerskills is Corey Haines' second skill pack (after his marketing skills), aimed at the solo founder's own work rather than marketing. Each of the 23 skills is a written workflow your agent follows and saves to disk:…
Short excerpt from the README of coreyhaines31/makerskills. Read the full README on GitHub.
Written by us so you can reuse it. Replace each [bracket] with your details.
Results and notes are written to disk in your config folder, so keep it out of shared repos. castmate can give another CLI write access when you allow it, and the author notes Gemini is only told, not forced, to stay in the project folder. Never paste API keys into the chat.
Corey Haines' free pack of 23 agent skills for running a small business yourself: think through decisions, research with sources, keep a second brain, do money check-ins, draft decks, find domains, and hand jobs to Codex or Gemini from inside your agent with castmate.
It works with Claude Code, Codex and Cursor. The code is on GitHub at coreyhaines31/makerskills.
Free & open source (MIT). Most skills need no account. castmate uses the other agent CLIs you already have and pay for (Gemini CLI needs an API key on personal accounts); some research and social skills use services listed in INSTALL.md.
Run the install command from the README: “npx skills add coreyhaines31/makerskills”. Check the README on GitHub for the latest version, then follow the steps on this page.
We read 108 instruction and code files in the repo and found no red flags. That is not a guarantee, so review anything that runs commands on your machine. How to check a skill before you install it →
All credit to the original authors. We rewrite in our own words and link back. Something wrong? Report it.
SKILLGive your agent a PDF, Word file, web page or just a topic and it builds a real .pptx you can keep editing in PowerPoint: native shapes, charts backed by data, tables, speaker notes and transitions, not flat pictures of slides.
Claude Code +2★ 65.9k
SKILLFill in your profile once, then let Claude Code search job boards, score each posting against you, and write a tailored CV and cover letter that a second agent reviews.
Claude Code +1★ 63.8k
SKILLSkills written by Obsidian's own CEO so Claude Code or Codex writes proper Obsidian notes, builds Bases tables and Canvas boards, and runs vault tasks through the Obsidian CLI instead of guessing the format.
Claude Code +1★ 50.1k
SKILLAnthropic's reference agents and skills for finance teams: build comps, DCF and LBO models, draft pitch decks and earnings notes, reconcile ledgers, close the month and screen KYC files, with every output staged for a person to sign off.
Claude Cowork +1★ 40.7k
SKILLAnthropic's official plugins that make Claude work like a specialist in a given role: sales call prep, support ticket triage, contract review, month-end finance tasks, SQL and dashboards, specs and roadmaps, each with its own skills, commands and tool connectors.
Claude Cowork +2★ 32k
SKILLA free, open-source office suite that ships a genoffice command line and an agent skill, so your coding agent can create, read, convert and edit real .docx, .xlsx and .pptx files on your computer, with live spreadsheet formulas and decks that stay editable.
Claude Code +3★ 10.6kFree newsletter
New AI tools you can use right away, in plain words. Every Friday.