mermaid

Create Mermaid diagrams for Markdown documentation including flowcharts, sequence diagrams, class diagrams, state diagrams, ER diagrams, Gantt charts, pie charts, mindmaps, timelines, C4 diagrams, and 20+ other diagram types. Use when the user wants to draw, create, or visualize diagrams in Markdown-friendly format, mentions Mermaid, needs diagrams for GitHub/GitLab/wikis, or wants quick diagrams that render directly in Markdown renderers.