Create programmatic Whimsical diagrams using MCP server and Mermaid markup integration
Whimsical MCP Server is a powerful tool that enables developers to create and visualize complex diagrams programmatically, leveraging the Model Context Protocol (MCP). By integrating with Whimsical's API through the MCP protocol, this server provides a seamless way for AI applications like Claude Desktop, Continue, Cursor, and others to generate dynamic Mermaid markup into engaging Whimsical diagrams. These diagrams can then be shared as URLs or base64 encoded images, supporting iterative enhancements directly within the AI development workflow.
The Whimsical MCP Server offers a robust set of features that enhance the capabilities of AI applications:
The Whimsical MCP Server adheres to the MCP protocol to ensure seamless integration with a variety of AI applications:
The architecture of Whimsical MCP Server is designed to be modular and scalable, enabling it to work effectively with various backend resources:
graph TD;
A[AI Application] -->|MCP Client| B[MCP Protocol];
B --> C[Whimsical MCP Server];
C --> D[Data Source/Tool];
style A fill:#e1f5fe, font-size:20px
style C fill:#f3e5f5, font-size:20px
style D fill:#e8f5e8, font-size:20px
graph TD;
A[Diagram Input] --> B[Merge Transform];
B --> C[Data Source];
C --> D[Whimsical API Call];
D --> E[Transformed Output];
E --> F[Output Storage];
style A fill:#f5e1e1, font-size:20px
style B fill:#b3e5e9, font-size:20px;
style C fill:#d6f5d6, font-size:20px;
style D fill:#e9f5ba, font-size:20px;
style E fill:#f5edba, font-size:20px;
style F fill:#f9ecf5, font-size:20px
Whimsical MCP Server can be installed in two ways:
Installation via Smithery:
npx -y @smithery/cli install BrockReece/whimsical-mcp-server --client claude
Manual Installation:
git clone https://github.com/BrockReece/whimsical-mcp-server.git
cd whimsical-mcp-server
yarn install
yarn build
Imagine using an AI application to design a system architecture diagram. The developer would write Mermaid markup describing the components and their interactions, which is then sent through the MCP protocol to Whimsical, resulting in a polished visual representation.
graph LR;
A[AI Application] --> B[Whimsical MCP Server];
B --> C[Merge&Transform Tool];
C --> D[HTTP Call to Whimsical API];
D --> E[Diagram Generated];
E --> F[Shared URL to Client];
style A fill:#e1f5fe, font-size:20px;
style B fill:#f3e5f5, font-size:20px;
style C fill:#d6f5d6, font-size:20px;
style D fill:#e9f5ba, font-size:20px;
style E fill:#f5edba, font-size:20px;
style F fill:#f9ecf5, font-size:20px
In another scenario, an AI application could utilize this server to visualize a complex data report structure. The MarkDown text describing the hierarchy and relationships is seamlessly transformed into a detailed diagram that aids in effective communication.
graph TD;
A[AI Application] --> B[Whimsical MCP Server];
B --> C[Merge&Transform Tool];
C --> D[HTTP Call to Whimsical API];
D --> E[Diagram Generated];
E --> F[Shared URL to Client];
style A fill:#e1f5fe, font-size:20px;
style B fill:#f3e5f5, font-size:20px;
style C fill:#d6f5d6, font-size:20px;
style D fill:#e9f5ba, font-size:20px;
style E fill:#f5edba, font-size:20px;
style F fill:#f9ecf5, font-size:20px
To integrate Whimsical MCP Server with an AI application like Claude Desktop:
Update the MCP Client’s configuration to point to this server's dist
folder:
{
"mcpServers": {
"whimsical": {
"command": "node",
"args": [
"/path/to/this/repo/whimsical-mcp-server/dist/index.js"
]
}
}
}
Whimsical MCP Server supports the following AI applications:
MCP Client | Resources | Tools | Prompts | Status |
---|---|---|---|---|
Claude Desktop | ✅ | ✅ | ✅ | Full Support |
Continue | ✅ | ✅ | ✅ | Full Support |
Cursor | ❌ | ✅ | ❌ | Tools Only |
{
"mcpServers": {
"whimsical-server": {
"command": "node",
"args": [
"/path/to/this/repo/whimsical-mcp-server/dist/index.js"
],
"env": {
"API_KEY": "your-api-key"
}
}
}
}
Q: How do I troubleshoot connection issues between my AI application and Whimsical MCP Server?
Q: Can I use this server with other diagramming tools besides Whimsical?
Q: How does this enhance AI workflows specifically?
Q: Is there a limit to the size or complexity of diagrams that can be generated?
Q: How do I secure my MCP Server instance when running it locally?
Contributions are welcome! If you’d like to contribute enhancements or bug fixes, follow these steps:
Explore more about Model Context Protocol and related tools within the AI development ecosystem:
By leveraging Whimsical MCP Server, developers can harness the full potential of AI applications and tools to streamline their development processes. Whether you're creating intricate system architectures or complex reports, this server provides a powerful solution for visualizing data in real-time.
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