What problem does it solve? Mermaid diagrams often render with broken layouts, saturated colors, unreadable labels, or literal \n text, and markdown documents lack consistent figure labeling and styling. This Skill enforces a mandatory six-step ATACCU workflow (Analyze, Think, Apply, Create, Check, Update) so every diagram follows the GitHub Pastel v2 palette, proper init directives, and balanced layout patterns before being written to the target file. ## Core Features & Use Cases - ATACCU Diagram Protocol: A pre-flight checklist and quality gate that prevents common violations like missing init directives, white edge-label backgrounds in dark mode, and lopsided fan-out layouts. - Palette & Layout System: Copy-paste GitHub Pastel v2 and Fishbowl classDef styles plus named Medallion, Lineage, and Pipeline subgraph patterns for well-proportioned flowcharts, Gantt, and sequence diagrams. - Multi-Tool & Platform Guidance: Decision frameworks for choosing Mermaid, PlantUML, Graphviz, or D2 by audience and platform, plus Shields.io badge templates, emoji escape fixes, and VS Code preview configuration via the included CSS and setup prompt. - Use Case: When documenting a data pipeline, load this Skill to generate a Medallion-pattern flowchart with pastel classDef styling, transparent edge labels, and a numbered figure caption that renders correctly on GitHub and in VS Code dark mode. ## Quick Start Ask the agent to create a Mermaid flowchart of your process using the markdown-mermaid skill and write it into your documentation file.
