Side Project — Marketing Agent Skills
From saved ChatGPT prompts to AI agents that take action
32 free Claude Code skills for marketing work, picked from the private library of 81 skills I built or customized for my own work. This is how I went from saved prompts to instructions that work across different AI tools.
What It Is
Marketing Agent Skills is a free collection of instruction files that help Claude Code do marketing work. It started as a pile of 46 skills. I cut it down to 19 to make it easier for other people to use, and it has since grown to 32 published skills. They cover writing copy, improving sales pages, showing up in search results, explaining what a product does, running paid ads, and building marketing tools. My private version has grown to 81 skills I built or customized, including skills for building n8n automations and making AI videos. They run inside a 120-skill Claude Code setup, alongside open-source skills I installed as they came.
Why I Built It
I started inside ChatGPT, building custom GPTs and saving long prompts for the marketing work I do every day. That worked for a while. Then I needed the AI to open a browser, read a webpage, edit a file, and run a script. Claude Code was the first tool I used that could do those things inside my usual work tools. I moved my workflow there and turned what I knew into reusable instruction files called skills.
An AI model already knows a lot about marketing in general, it's read most of the internet. What it doesn't have is my opinions, the specific calls I've made after eight years of actually doing this work, the kind of judgment that's right for how I work and wrong in ways a generic answer never warns you about. A skill is where I write down my own opinions as a practitioner, so the AI reasons the way I actually would.
What It Does
Most skills are one file kept under 500 lines. Longer reference material sits in separate files and only loads when a task needs it. That keeps each skill fast to load. I picked the skills in the public GitHub folder because they can help other marketers. You can install them by asking Claude Code to install them from the GitHub repo or by uploading each skill as a zip file. Once installed, Claude Code chooses the right skill for what you ask it to do. That could be writing a sales page, checking a website's search problems, or building a pricing plan.
What It Taught Me
I learned that a skill can work with more than one AI tool. The same file can run inside Claude Code or OpenAI's Codex command-line tool. It can also become a ChatGPT Project because each one can read the same plain instructions. That changed how I write down what I know. I can write the instructions once and use them in different places. These tools can also connect to browsers, databases, and other software. A skill can publish a page, take a screenshot, look something up in a database, or save a code change. Eight years of marketing knowledge that lived in my head now works like software. I can share it with someone else or use it on a task.
Want something like this?
I’m open to full-time or in-house work where you need an ongoing plan or someone to lead marketing for the long term. I also offer specific marketing and GTM services for teams that need help with the work itself.