workflow-canvas
Use whenever you work on Workflow Canvas, the infinite editable canvas the user and you share live through the workflow-canvas MCP tools (by default at http://localhost:8790), including before your first workflow-canvas tool call. Applies when the user asks to put, map, draw, diagram or visualize something on the canvas (a plan, system architecture, codebase, workflow or decision flow, pipeline or mind map), mentions a canvas document, or asks you to implement, review or write requirements (a BRD) from a diagram on it. Covers building diagrams people can keep editing, logic roles and describe_logic, saving .excalidraw files, screenshots, and starting the canvas when it is not running. Not for a standalone file the user does not want to keep editing (an HTML page, a Mermaid snippet or an image).