ext-apps/examples/wiki-explorer-server
Repository files (latest commit first)
Filename Latest commit message Latest commit date
Jerome c25d464d18
feat: publish example servers to npm (#184)
* feat: publish example servers to npm

Make example MCP App servers publishable to npm under the
@modelcontextprotocol scope:

- server-basic-react
- server-basic-vanillajs
- server-budget-allocator
- server-cohort-heatmap
- server-customer-segmentation
- server-scenario-modeler
- server-system-monitor
- server-threejs
- server-wiki-explorer

Changes:
- Remove `private: true` from example package.json files
- Add proper npm metadata (description, repository, license, files)
- Update ext-apps dependency from relative to ^0.2.2
- Copy server-utils.ts into each package for standalone use
- Add publish-examples job to npm-publish.yml workflow

The examples will be published automatically when a GitHub release
is created, after the main SDK package is published.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

* feat: publish examples with pkg-pr-new for PR testing

* feat: export createServer from example servers

* style: format integration-server/server.ts

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

* fix: update e2e snapshots for basic-server examples

Update golden screenshots for basic-react and basic-vanillajs after
the tool output was simplified from JSON to plain text in #182.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

* merge

* refactor: update sheet-music-server and video-resource-server to new publishing pattern

- Move server-utils.ts from src/ to root level
- Add npm publishing metadata (scoped name, repository, license, files)
- Change ext-apps dependency from local to versioned ^0.2.2
- Update server.ts to handle stdio mode inline

* update package-lock

* fix: update package-lock.json for renamed server packages

* feat: add NASA public domain video to video-resource-server

Added 'nasa-earth' option - NASA ISS Earth observations (6.4MB).
Source: archive.org/details/NASA-Ultra-High-Definition (public domain)

* fix: add default videoId for video-resource-server

* fix: use existing bunny-1mb as default video, remove nasa-earth

* refactor: update new framework examples to publishing pattern

Add publishing metadata for:
- @modelcontextprotocol/server-basic-preact
- @modelcontextprotocol/server-basic-solid
- @modelcontextprotocol/server-basic-svelte
- @modelcontextprotocol/server-basic-vue

Changes:
- Move server-utils.ts from src/ to root
- Add npm publishing metadata
- Update ext-apps dep to versioned ^0.2.2
- Add stdio mode support in main()

* fix: add missing @rollup/rollup-win32-arm64-msvc to optionalDependencies

This fixes the Windows ARM64 CI build failure caused by npm's optional
dependency bug. The package.json was missing this platform-specific
rollup binding.

---------

Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: Olivier Chafik <ochafik@anthropic.com>
2026-01-08 20:08:50 +00:00
..
src feat: publish example servers to npm (#184) 2026-01-08 20:08:50 +00:00
mcp-app.html Add color-scheme meta tag to all example apps 2025-12-15 11:42:18 -08:00
package.json feat: publish example servers to npm (#184) 2026-01-08 20:08:50 +00:00
README.md Add wiki-explorer-server example (#122) 2025-12-11 13:58:05 +01:00
server-utils.ts feat: publish example servers to npm (#184) 2026-01-08 20:08:50 +00:00
server.ts feat: publish example servers to npm (#184) 2026-01-08 20:08:50 +00:00
tsconfig.json Add wiki-explorer-server example (#122) 2025-12-11 13:58:05 +01:00
vite.config.ts Add wiki-explorer-server example (#122) 2025-12-11 13:58:05 +01:00

Example: Wiki Explorer

Visualizes Wikipedia link graphs using a force-directed layout. Explore how Wikipedia pages are connected by expanding nodes to reveal first-degree links.

Zoomed Pop-up Expanded graph

Features

  • Force-directed graph visualization: Interactive graph powered by force-graph
  • Node expansion: Click any node to expand and see all pages it links to
  • Visual state tracking: Nodes change color based on state (blue = default, green = expanded, red = error)
  • Direct page access: Open any Wikipedia page in your browser

Running

  1. Install dependencies:

    npm install
    
  2. Build and start the server:

    npm run start:http  # for Streamable HTTP transport
    # OR
    npm run start:stdio  # for stdio transport
    
  3. View using the basic-host example or another MCP Apps-compatible host.

Tool Input

To test the example, call the get-first-degree-links tool with a Wikipedia URL:

{
  "url": "https://en.wikipedia.org/wiki/Graph_theory"
}

Click nodes in the graph to Open (view in browser) or Expand (visualize linked pages).

Architecture

Server (server.ts)

MCP server that fetches Wikipedia pages and extracts internal links.

Exposes one tool:

  • get-first-degree-links - Returns links to other Wikipedia pages from a given page

App (src/mcp-app.ts)

Vanilla TypeScript app using force-graph for visualization that:

  • Receives tool inputs via the MCP App SDK
  • Renders an interactive force-directed graph
  • Supports node expansion to explore link relationships