LeanOS replaces your SaaS stack and your headcount with one system. One orchestrator governs 14 function agents across strategy, product, market, revenue, and intelligence. Built on Claude Code. Every skill is a readable markdown file - no hidden prompts, no black box. Copy .claude/ into your repo, run claude --agent orchestrator, get first useful output in under 60 minutes. Replaces 9+ tools costing $4,700-$22,000/year. $499 once. Free Core on GitHub (29 skills, MIT).