Diagram rendering fallback¶

UML-MCP tries Kroki first for rendering. If Kroki fails or is unreachable, the pipeline may fall back to a PlantUML server (for PlantUML-family diagrams) or Mermaid.ink (for Mermaid). Responses may include a source field (kroki, plantuml_server, or mermaid_ink) naming the backend that produced the image.

For environment variables, local servers, and tuning, see Configuration and the Fallback strategy section in the README.