create_er_diagram
Entity-Relationship diagrams with cardinality
How to use it
Project documentation lists create_er_diagram for the Excalidraw MCP MCP server. Add the server to your MCP client (Claude Desktop, Cursor, Windsurf and others), then check which tools your installed version makes available. Tool availability can depend on configuration and credentials. A server handshake does not verify this tool’s behavior. See the full listing for setup details.
Install Excalidraw MCP
uvx maaker-excalidraw-mcpOther tools in Excalidraw MCP (25)
Layered architecture diagrams with connections
Vertical bar charts with auto-scaled bars and labels
UML class diagrams with attributes, methods, relationships
Decision trees with diamond decisions and rectangular outcomes
Flowcharts with Sugiyama layout — branches, merges, cycles, groups
Kanban boards with columns and cards
Line charts with multi-series support
Tree-style mind maps with auto-colored branches
Network topology with typed nodes (server, DB, etc.)
Organizational charts (top-down hierarchy)
Pie charts with labeled slices and percentages
2x2 priority/positioning matrices
Radar/spider charts with multi-series overlay
UML sequence diagrams with lifelines and messages
UML state machines with initial/final states
SWOT analysis 2x2 color-coded matrices
Grid tables with auto-sized columns and alternating row colors
Timeline/Gantt charts with overlapping event handling
User journey maps with emotion indicators
UI wireframe mockups with device frames
Export diagrams to SVG format
Import Mermaid syntax (flowchart, sequence, class, state)
List all available diagram types
Add/remove nodes and connections in existing diagrams
Analyze existing .excalidraw files