Corey Haines put together this marketing copy skill to act as a copy chief during product launches. It handles the standard copywriting jobs: landing pages, homepages, ads, and rewrites. The upstream lives in a marketingskills repo, though the catalogue entry itself is light on specifics about prompting strategy or brand voice controls. If you're shipping something and need a sparring partner for headline variations or messaging angles, this gives you a named skill to invoke instead of freeform prompting. Just know you're getting a general copywriting assistant, not a framework with opinionated templates or conversion optimization rules baked in.
npx skills add https://github.com/nexu-io/open-design --skill copywriting