I replaced $500/mo of SEO, Google Ads tools with a Claude Code plugin — here's how I structured the 15 skills

I spent the last few months building toprank, an open-source Claude Code plugin that runs Google Ads audits, SEO audits, keyword research, RSA copy generation, and publishes content to WordPress/Strapi/Contentful/Ghost. It replaced about $500/month of tools I was paying for. The interesting part wasn't the domain logic. It was figuring out how to structure 15 skills so Claude picks the right one, doesn't hallucinate when money is on the line, and stays maintainable as the plugin grows. This pos