README.md
An interactive budget allocation tool for real-time data visualization.
Example: Budget Allocator App
An interactive budget allocation tool demonstrating real-time data visualization with MCP Apps.
MCP Client Configuration
Add to your MCP client configuration (stdio transport):
{
"mcpServers": {
"budget-allocator": {
"command": "npx",
"args": [
"-y",
"--silent",
"--registry=https://registry.npmjs.org/",
"@modelcontextprotocol/server-budget-allocator",
"--stdio"
]
}
}
}
Local Development
To test local modifications, use this configuration (replace ~/code/ext-apps with your clone path):
{
"mcpServers": {
"budget-allocator": {
"command": "bash",
"args": [
"-c",
"cd ~/code/ext-apps/examples/budget-allocator-server && npm run build >&2 && node dist/index.js --stdio"
]
}
}
}
Features
- Interactive Sliders: Adjust budget allocation across 5 categories (Marketing, Engineering, Operations, Sales, R&D)
- Donut Chart: Real-time visualization of allocation distribution using Chart.js
- Sparkline Trends: 24-month historical allocation data per category
- Percentile Badges: Compare your allocation vs. industry benchmarks
- Stage Selector: Switch between Seed, Series A, Series B, and Growth benchmarks
- Budget Presets: Quick selection of $50K, $100K, $250K, or $500K totals
Running
Install dependencies:
npm installBuild and start the server:
npm run start:http # for Streamable HTTP transport # OR npm run start:stdio # for stdio transportView using the `basic-host` example or another MCP Apps-compatible host.
Architecture
Server (`server.ts`)
Exposes a single get-budget-data tool that returns:
- Category definitions with colors and default allocations
- Historical data (~120 data points) - 24 months of allocation history per category
- Industry benchmarks (~60 data points) - Aggregated percentile data by company stage
The tool is linked to a UI resource via _meta.ui.resourceUri.
App (`src/mcp-app.ts`)
- Uses Chart.js for the donut chart visualization
- Renders sparkline trends using inline SVG
- Computes percentile rankings client-side from benchmark data
- Updates all UI elements reactively on slider changes
Tools (1)
get-budget-dataReturns category definitions, historical allocation data, and industry benchmarks for budget planning.Configuration
claude_desktop_config.json
{"mcpServers": {"budget-allocator": {"command": "npx", "args": ["-y", "--silent", "--registry=https://registry.npmjs.org/", "@modelcontextprotocol/server-budget-allocator", "--stdio"]}}}Try it
→Get the current budget data to visualize my startup's spending distribution.
→Compare my current engineering budget allocation against Series A industry benchmarks.
→Show me the 24-month historical trend for R&D spending.
→Adjust the budget presets to a $250K total and show the updated donut chart.