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9e9f5f0210* Centralize example server transport logic in shared utils Move stdio/HTTP transport handling into `server-utils.ts` so example servers only need to call `startServer(createServer)`. Switch HTTP transport to stateless mode and remove legacy SSE endpoints. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com> * Make example servers self-contained with local server-utils Copy `server-utils.ts` into each example's `src/` directory so examples can be used standalone without the shared directory. Updates imports from `"../shared/server-utils.js"` to `"./src/server-utils.js"`. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com> * Add `integration-server` example for E2E testing Add dedicated `integration-server` example (duplicated from `basic-server-react`) to preserve E2E testing capabilities while allowing `basic-server-react` to be simplified as a minimal example. Changes: - Add `examples/integration-server` exercising SDK communication APIs - Update E2E tests to use `integration-server` instead of `basic-server-react` and `basic-server-vanillajs` - Use server name labels instead of indices for more robust test selection - Remove `basic-react.png` and `basic-vanillajs.png` golden snapshots 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com> * Simplify `basic-server-*` examples - Clarify comments - Return plain text from `get-time` tool instead of JSON - Remove simulated cleanup delay from `onteardown` 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com> |
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| mcp-app.html | ||
| package.json | ||
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Example: Budget Allocator App
An interactive budget allocation tool demonstrating real-time data visualization with MCP Apps.
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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
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Install dependencies:
npm install -
Build and start the server:
npm run start:http # for Streamable HTTP transport # OR npm run start:stdio # for stdio transport -
View using the
basic-hostexample 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