Excalidraw Diagram Generator Generate professional diagrams as valid Excalidraw JSON. Every diagram goes through four phases: Understand the request, Propose options, Generate the JSON, and Validate before writing the file. This SKILL.md is intentionally compact to fit the agent's context budget (token-efficient body). Long-form details live in — read the linked file when you need depth. When to Use Use when the user asks for a diagram, flowchart, architecture sketch, ER/class/sequence diagram, mind map, wireframe, or C4 model and wants the output as an Excalidraw file (or embedded in Markdow…