298e884ec3* chore: add stable spec release 2026-01-26 - Use git mv to copy specification from draft to specification/2026-01-26/apps.mdx (preserves history) - Update status from 'Draft' to 'Stable (2026-01-26)' - Add specification version table to README - Update Resources section with links to both stable and draft specs * chore: bump version to 1.0.0 - Update main package version from 0.4.2 to 1.0.0 - Update all example package versions to 1.0.0 - Regenerate package-lock.json * prettier * chore: align protocol version with spec release 2026-01-26 - Add 'Protocol Version: 2026-01-26' to spec header - Update LATEST_PROTOCOL_VERSION from '2025-11-21' to '2026-01-26' - Update spec examples to use '2026-01-26' protocol version - Add '2025-11-21' to SUPPORTED_PROTOCOL_VERSIONS for backwards compatibility * chore: update spec references to stable 2026-01-26 - Update typedoc.config.mjs navigation link - Update docs/overview.md spec links (10 occurrences) - Update plugins/mcp-apps/skills/create-mcp-app/SKILL.md spec link - Update src/spec.types.ts @see links - Update AGENTS.md spec path - Regenerate src/generated/schema.ts with updated links * chore: simplify versioning - first stable release - Remove backwards compatibility version (2025-11-21) - this is the first stable release - Remove redundant 'Protocol Version' header - spec version IS the protocol version * chore: add history reference comment to stable spec
105 lines
3.9 KiB
Markdown
105 lines
3.9 KiB
Markdown
# Example: Customer Segmentation Explorer
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A demo MCP App that displays customer data as an interactive scatter/bubble chart with segment-based clustering. Users can explore different metrics, filter by segment, and click to see detailed customer information.
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<table>
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<tr>
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<td><a href="https://modelcontextprotocol.github.io/ext-apps/screenshots/customer-segmentation-server/01-account-age-revenue.png"><img src="https://modelcontextprotocol.github.io/ext-apps/screenshots/customer-segmentation-server/01-account-age-revenue.png" alt="Account age vs revenue" width="100%"></a></td>
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<td><a href="https://modelcontextprotocol.github.io/ext-apps/screenshots/customer-segmentation-server/02-tickets-nps-engagement.png"><img src="https://modelcontextprotocol.github.io/ext-apps/screenshots/customer-segmentation-server/02-tickets-nps-engagement.png" alt="Tickets, NPS, engagement" width="100%"></a></td>
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<td><a href="https://modelcontextprotocol.github.io/ext-apps/screenshots/customer-segmentation-server/07-age-engagement-revenue.png"><img src="https://modelcontextprotocol.github.io/ext-apps/screenshots/customer-segmentation-server/07-age-engagement-revenue.png" alt="Age, engagement, revenue" width="100%"></a></td>
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</tr>
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</table>
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## MCP Client Configuration
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Add to your MCP client configuration (stdio transport):
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```json
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{
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"mcpServers": {
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"customer-segmentation": {
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"command": "npx",
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"args": [
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"-y",
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"--silent",
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"--registry=https://registry.npmjs.org/",
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"@modelcontextprotocol/server-customer-segmentation",
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"--stdio"
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]
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}
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}
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}
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```
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### Local Development
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To test local modifications, use this configuration (replace `~/code/ext-apps` with your clone path):
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```json
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{
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"mcpServers": {
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"customer-segmentation": {
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"command": "bash",
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"args": [
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"-c",
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"cd ~/code/ext-apps/examples/customer-segmentation-server && npm run build >&2 && node dist/index.js --stdio"
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]
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}
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}
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}
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```
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## Features
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- **Interactive Scatter Plot**: Bubble chart visualization using Chart.js with configurable X/Y axes
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- **Segment Clustering**: 250 customers grouped into 4 segments (Enterprise, Mid-Market, SMB, Startup)
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- **Axis Selection**: Choose from 6 metrics for each axis (Revenue, Employees, Account Age, Engagement, Tickets, NPS)
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- **Size Mapping**: Optional bubble sizing by a third metric for additional data dimension
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- **Legend Filtering**: Click segment pills to show/hide customer groups
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- **Detail Panel**: Hover or click customers to see name, segment, revenue, engagement, and NPS
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- **Theme Support**: Adapts to light/dark mode preferences
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## Running
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1. Install dependencies:
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```bash
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npm install
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```
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2. Build and start the server:
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```bash
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npm run start:http # for Streamable HTTP transport
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# OR
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npm run start:stdio # for stdio transport
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```
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3. View using the [`basic-host`](https://github.com/modelcontextprotocol/ext-apps/tree/main/examples/basic-host) example or another MCP Apps-compatible host.
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## Architecture
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### Server (`server.ts`)
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Exposes a single `get-customer-data` tool that returns:
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- Array of 250 generated customer records with segment assignments
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- Segment summary with counts and colors for each group
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- Optional segment filter parameter
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The tool is linked to a UI resource via `_meta.ui.resourceUri`.
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### App (`src/mcp-app.ts`)
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- Uses Chart.js bubble chart for the visualization
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- Fetches data once on connection
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- Dropdown controls update chart axes and bubble sizing
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- Custom legend with clickable segment toggles
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- Detail panel updates on hover/click interactions
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### Data Generator (`src/data-generator.ts`)
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- Generates realistic customer data with Gaussian clustering around segment centers
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- Each segment has characteristic ranges for revenue, employees, engagement, etc.
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- Company names generated from word-list combinations (e.g., "Apex Data Corp")
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- Data cached in memory for consistency across requests
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