Diagrams MCP

Renders cloud architecture diagrams, flowcharts, and sequence diagrams through three engines: mingrammer/diagrams for infrastructure as code visuals, Mermaid for flowcharts and state machines, and PlantUML for UML diagrams. Exposes discovery tools to search and list nodes across AWS, GCP, Azure, and Kubernetes providers, plus rendering tools that execute Python diagram code or Mermaid/PlantUML definitions and return PNG images. Includes cross-provider equivalence lookups to translate service concepts between clouds. Runs hosted on Railway or locally via uvx with Graphviz required for core rendering. Useful when you need to generate architecture diagrams programmatically from Claude conversations instead of dragging boxes in a GUI.