C4 Architecture

Generates C4 architecture diagrams using Mermaid syntax, covering all four levels plus dynamic flow diagrams. The workflow is straightforward: it analyzes your codebase, creates diagrams at the right abstraction level, and outputs markdown files with context. The guidance here is solid, especially the emphasis on stopping at container diagrams for most teams since component and deployment diagrams often add more noise than value. Includes practical syntax examples for people, systems, containers, components, boundaries, and relationships. The styling options help when labels overlap, which happens more often than you'd think. Good for documenting existing systems or designing new ones when stakeholders need visual artifacts.