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Install in OpenClaw
/install excalidraw-diagram-generator
Description
Generate Excalidraw diagrams from natural language descriptions. Use when asked to "create a diagram", "make a flowchart", "visualize a process", "draw a sys...
Usage Guidance
Reasonable to install for generating Excalidraw diagrams. Treat the optional icon workflow carefully: only run helper scripts you can inspect and trust, keep icon libraries inside the skill’s intended libraries directory, and review generated diagrams before sharing if the prompt included sensitive architecture or business details.
Capability Analysis
Type: OpenClaw Skill
Name: excalidraw-diagram-generator
Version: 1.0.0
The skill is suspicious due to instructions in `SKILL.md` for the AI agent to execute local Python scripts (`add-icon-to-diagram.py`, `add-arrow.py`, `split-excalidraw-library.py`) located within the skill bundle. While presented as utility functions for diagram generation, this capability introduces a significant vulnerability risk (potential RCE via shell injection) if user-controlled input is passed unsanitized to these scripts. Additionally, `SKILL.md` repeatedly instructs the agent to use `fontFamily: 5` for text elements, which contradicts the valid font family IDs (1, 2, 3) documented in `references/element-types.md` and `references/excalidraw-schema.md`, indicating a bug that could lead to malformed output.
Capability Assessment
Purpose & Capability
The stated purpose is to generate Excalidraw diagram JSON from user descriptions, and the main instructions align with that purpose.
Instruction Scope
Most instructions are scoped to creating .excalidraw files; the optional icon section asks the agent to inspect skill-local icon libraries and run helper scripts, which is broader than pure JSON generation but still purpose-aligned and disclosed.
Install Mechanism
The package contains only markdown/reference files; SKILL.md references scripts and templates that are not present in the artifact, which looks like a packaging or documentation inconsistency rather than malicious behavior.
Credentials
Optional icon support involves local file reads under a libraries directory and user-directed library setup/download from Excalidraw, but there is no evidence of credential access, broad local indexing, or unrelated network use.
Persistence & Privilege
No background persistence, privilege escalation, account mutation, credential handling, or autonomous long-running behavior is present in the artifacts.
How to Use
- Make sure OpenClaw is installed (local or Docker)
- Run the install command in chat:
/install excalidraw-diagram-generator - After installation, invoke the skill by name or use
/excalidraw-diagram-generator - Provide required inputs per the skill's parameter spec and get structured output
Version History
v1.0.0
Initial release – generate Excalidraw diagrams from natural language descriptions.
- Supports flowcharts, relationship diagrams, mind maps, system architecture diagrams, data flow diagrams, swimlanes, class, sequence, and ER diagrams.
- Outputs valid .excalidraw JSON files compatible with Excalidraw and its VS Code extension.
- Includes detailed usage instructions, diagram type selection guidance, and element formatting standards.
- Applies best practices for diagram clarity, element limits, color schemes, and layout consistency.
- Ensures all text uses Excalifont (fontFamily: 5) for visual consistency.
Metadata
Frequently Asked Questions
What is Excalidraw Diagram Generator?
Generate Excalidraw diagrams from natural language descriptions. Use when asked to "create a diagram", "make a flowchart", "visualize a process", "draw a sys... It is an AI Agent Skill for Claude Code / OpenClaw, with 3969 downloads so far.
How do I install Excalidraw Diagram Generator?
Run "/install excalidraw-diagram-generator" in the OpenClaw or Claude Code chat to install it in one step — no extra setup required.
Is Excalidraw Diagram Generator free?
Yes, Excalidraw Diagram Generator is completely free (open-source). You can download, install and use it at no cost.
Which platforms does Excalidraw Diagram Generator support?
Excalidraw Diagram Generator is cross-platform and runs anywhere OpenClaw / Claude Code is available (cross-platform).
Who created Excalidraw Diagram Generator?
It is built and maintained by Morpheous (@elihuvillaraus); the current version is v1.0.0.
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