Mermaid Diagram Specialist

If you've ever needed to document an API flow or database schema and reached for a whiteboard, this will save you time. It generates Mermaid diagrams in proper syntax: flowcharts for decision trees, sequence diagrams for API calls, ERDs for database relationships, and C4 diagrams for architecture. The skill includes a decision matrix to pick the right diagram type and covers all the syntax details like node shapes, arrow types, and cardinality symbols. Most useful when you're writing technical docs or explaining system design to your team. The examples are solid and show real patterns like authentication flows and booking systems, not toy demos.