Two-mode copywriting system that either writes new copy from scratch or audits existing copy for persuasion failures and AI patterns. Writing mode walks through a gated brief, discovers brand voice, picks a framework (Simon Sinek, PAS, Show Don't Tell), and generates 2-3 alternatives with reasoning. Editing mode is more interesting: it flags AI-isms using tiered word lists, runs seven sequential sweeps for passive voice and vague claims, then outputs a labeled diff showing exactly what broke which persuasion rule. Use it when you need landing page copy that actually sells or when something reads like ChatGPT and you want concrete labels explaining why. The reference files do real work here, especially the frameworks and pattern databases.
npx skills add https://github.com/mblode/agent-skills --skill copywriting