Product-design, conversion & behavioral-science principles for SaaS

Open-source customer money path for usage-based SaaS — authorize customer spend before paid work runs.

PM skill for Claude Code, Codex, Cursor, and Windsurf: diagnose SaaS metrics, critique PRDs, plan roadmaps, run discovery, and coach PM career transitions.

A large set of app-specific Agent Skills for connecting agents to common SaaS tools.