135 marketing skills for any AI agent

A skill is a short instruction file, SKILL.md, that teaches an AI agent one marketing job. It says when to use it, what it needs from you, the steps to follow, the checks to pass and what it hands back at the end.

Agents such as Claude Code read the description of every installed skill and pick the one that fits your request, so you don't have to name it. Ask for a keyword list and the keyword research skill takes over; ask for a launch email and the email skill does.

The result is the same careful method every time, instead of whatever the model happens to think of that day.

Yes. Every skill is open source under the MIT licence, so you can use, change and share them, including for client work, without paying anything or asking permission.

Where a skill adapts someone else's open work, its page credits the source and the licence. Repos with a copyleft licence are only used for ideas, and repos with no licence aren't used at all.

A prompt is one request. A skill is the method behind the job: the questions to ask first, the order of the steps, the quality checks and the format of the result.

You still ask in plain words. The skill makes the answer reliable: it stops the agent skipping research, inventing numbers or handing back something you can't use.

Because skills are files, you can read exactly what the agent will do, change it to suit your business and share the improved version with your team.

Claude Code installs them from the cmo.so marketplace in two commands. Any agent that reads SKILL.md folders, such as Codex or Cursor, can use them by copying the folder into its skills directory.

The core skills also work through the cmo.so MCP server in Claude, ChatGPT, Cursor and other MCP clients, so you can run your cmo.so marketing from whichever assistant you already use.

In Claude Code, add the marketplace with /plugin marketplace add AI-Marketing-OS-LTD/cmo-so-skills, then install a group, for example /plugin install cmo-so-seo@cmo-so for the SEO skills or cmo-so@cmo-so for the core skills. Each category page shows its own command.

For other agents, open a skill's page, follow the link to its folder on GitHub and copy that folder into your agent's skills directory. Nothing else needs to be set up.

Not for most skills: strategy, SEO, content, email, ads, CRO, analytics and the rest work on their own with whatever your agent can already see and do.

The core skills connect your agent to cmo.so to plan, write and publish for your website, read your Search Console data and run your social queues, and those need an account. The free plan is enough to start, and every change is shown to you before it happens.

No. Ask for the outcome you want, such as “write a launch email” or “find keywords for my shop”, and the agent picks the right skill and asks for anything it is missing.

Each category page lists an everyday job for every skill with a prompt you can copy, if you'd like a starting point. Words in a highlight are the ones to change for your business.

Votes show which skills people find useful and help us decide what to improve first. Hot and Most upvoted sort the library by them, so the most useful skills are easy to find.

Save keeps a skill in your Saved list on this page, so you can find it again later. Voting and saving need a free cmo.so sign-in, and you can change or take back a vote at any time.

Yes. Press Suggest a repo and paste a public GitHub repository with marketing playbooks, prompts or agent skills. Maggie reads it within minutes, checks the licence first and decides whether to add it as a new skill, use it to improve an existing one, put it to a vote or decline it, with her reasons.

A repo put to a vote appears under the Waiting sort. If it reaches a score of 10 within 30 days, it's added to the library. You can suggest up to 3 repos a day.

The library syncs from the public cmo-so-skills repo, so new and improved skills show up here as soon as they ship; in Claude Code, update the marketplace to pick them up.

Suggestions from the community are researched as they come in, and skills that get the most votes are the first we improve.

Yes. A skill is a plain Markdown file, so you can edit the steps, add your own checks or examples, and keep your version in your own repo. The MIT licence allows it.

If your change would help others too, suggest it as a repo or open a pull request on GitHub, and it may be folded into the library for everyone.

No. A skill only guides your own agent; your files, documents and data stay wherever your agent and its tools keep them.

cmo.so only sees what you connect to cmo.so, for example when you use the core skills through the MCP server with your account. Votes, saves and suggestions on this page are stored against your cmo.so sign-in.