Create a new Excalidraw diagram from structured node and connection data.

The LLM provides a relationship map - this tool handles layout, styling, and rendering. No need to specify coordinates.

Convert Mermaid flowchart syntax into an Excalidraw diagram.

Supports the mermaid flowchart subset that AI agents commonly generate:

• Directions: graph TD, LR, BT, RL

• Node shapes: [text], {text}, ((text)), ([text])

• Edge types: -->, ---, -.-> ==> with |label|

• Subgraphs: subgraph Title ... end

Component types are auto-detected from node labels (e.g., a node labeled "PostgreSQL DB" automatically gets database styling).

Modify an existing Excalidraw diagram created by this tool.

Supports iterative editing: add components, remove nodes, update labels, and rewire connections - without recreating the entire diagram.

IMPORTANT: Call get_diagram_info first to understand the current diagram state before making modifications.

Get a structured summary of an existing Excalidraw diagram.

Call this BEFORE modify_diagram to understand what nodes and connections currently exist. The summary includes node ids, labels, component types, and the full connection topology.