api-blueprint

"analyze this project's API", "outside-in outline for X", "API-first learning plan", "create an API-first outline for X", "trace the public API", "analyze the API surface", "re-implement this API in Java", "simplified Java API reimplementation of X", "api-blueprint" — this skill analyzes any source project (Python, Go, Rust, Node.js, C#, Ruby, Java, etc.) from the outside in and produces an API-first learning outline (api-outline.md) that maps the public API surface, traces each capability inward through implementation layers, generates Mermaid call-chain diagrams and architecture visualizations, and creates a buildable simplified Java project skeleton with ★ Insight blocks and a visual learning roadmap.