What problem does it solve? Drawing a correct C4 Level 2 container diagram by hand is slow and error-prone: containers spill outside the system boundary, arrows cross labels, datastores look like plain boxes, and connection strings leak into exported images. This Skill automates the full build-and-quality loop so the diagram scores at least 95 with zero hard blockers. ## Core Features & Use Cases - Boundary-correct generation: Creates exactly one system-boundary frame holding typed containers (apps, APIs, queues, datastores) with actors and external systems placed outside it. - Mandatory quality loop: Runs lint, score, repair, polish, and architecture validation until the drawing reaches score >= 95 with no hard blockers, with rollback to saved checkpoints on regression. - Secret redaction: Redacts database URLs, broker credentials, API keys, and tokens before any tool call and re-scans the exported SVG/PNG. - Use Case: Ask to zoom into an existing C4 context diagram of your billing platform; the Skill converts it into a container view showing the React SPA, Spring Boot API, PostgreSQL, Redis, and Kafka with protocol-labeled edges. ## Quick Start Ask the assistant to draw a C4 Level 2 container diagram of one named system, listing its apps, APIs, datastores, queues, actors, and external systems with the protocol used on each connection.
