Add stdio transport configuration snippets near the top of each example
README to help users quickly set up the servers in their MCP clients.
- Node.js examples use npx with the published npm packages
- Python qr-server uses uv with local path
- Removed Claude Desktop-specific references from qr-server
* fix(examples): resolve DIST_DIR path for npm package execution
When servers are compiled to dist/server.js and published to npm,
`import.meta.dirname` already points to dist/, so joining with "dist"
results in dist/dist/ which doesn't exist.
This fix detects whether we're running from TypeScript source or
compiled JavaScript and adjusts the path accordingly:
- From source (server.ts): use dist/ subdirectory
- From compiled (dist/server.js): use current directory
Fixes ENOENT errors like:
"ENOENT: no such file or directory, open '.../dist/dist/mcp-app.html'"
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
* fix(pdf-server): mark pdfjs-dist as external in bundle
The pdf.worker.mjs file wasn't being found when running from npm
because bun bundled pdfjs-dist but didn't include the worker file.
By marking pdfjs-dist as external, it uses the installed package
from node_modules at runtime where the worker is available.
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
---------
Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
* feat: compile example servers to JavaScript for npm consumption
Add TypeScript compilation for server code so the example packages can be
imported and used by consumers without requiring TypeScript compilation.
Changes:
- Add tsconfig.server.json to each example for compiling server code
- Update package.json exports to point to compiled dist/server/server.js
- Add types field pointing to dist/server/server.d.ts
- Update build scripts to include server compilation step
- Fix .ts import extensions to .js in customer-segmentation-server
This enables importing the createServer function from published packages:
import { createServer } from '@modelcontextprotocol/server-basic-react';
* fix: add type assertion for Nominatim API response
* chore: regenerate schemas
* refactor: split server examples into library and binary entry points
- server.ts: exports createServer() only (library entry point)
- main.ts: entry point with main() that runs the server (binary)
- package.json: adds bin field for npx support, uses inline bun build
- tsconfig.server.json: emitDeclarationOnly, outputs to dist/
This allows:
1. Importing the server as a library: import { createServer } from '@modelcontextprotocol/server-basic-react'
2. Running with npx: npx @modelcontextprotocol/server-basic-react [--stdio]
Added migration script at scripts/migrate-server-examples.ts
* refactor: migrate remaining server examples to library/binary structure
Apply the same refactoring to all 13 remaining server examples:
- scenario-modeler-server, shadertoy-server, map-server
- cohort-heatmap-server, customer-segmentation-server, video-resource-server
- system-monitor-server, budget-allocator-server, sheet-music-server
- threejs-server, integration-server, transcript-server, wiki-explorer-server
Each now has:
- server.ts: exports createServer() (library)
- main.ts: runs the server (binary with shebang)
- bin field in package.json for npx support
* chore: remove unused server-utils.ts from video-resource-server/src
* update
* fix(build): make Windows-compatible by removing chmod and fixing bun externals
- Remove 'chmod +x dist/index.js' which doesn't exist on Windows
- Add '--external ./server.js' to prevent bun from treating the import as a second entry point
* fix(build): use .ts import for bun compatibility
- Change import from './server.js' to './server.ts' in main.ts files
- Remove --external flag since bun should inline everything
- Fixes Windows build where bun couldn't resolve .js to .ts properly
* fix(build): use --external for Windows bun compatibility
Bun on Windows incorrectly treats imported .ts files as entry points.
Use --external './server.js' to work around this, creating a runtime
dependency between index.js and server.js.
* style: fix prettier formatting in pdf-server/main.ts
* fix(build): remove quotes from --external for Windows cmd.exe compatibility
* fix(build): use glob pattern for --external to work on all platforms
The literal path --external ./server.js was not matching the import.
Using glob pattern --external "./server*" correctly externalizes the server module.
* fix(build): use */server.js pattern for --external
The "./server*" pattern was not matching on Windows.
Using "*/server.js" matches any path ending in /server.js which works cross-platform.
* fix(build): use *server.js pattern without slash for Windows compatibility
* update package-lock
* chore: regenerate package-lock.json for cross-platform compatibility
* fix(build): use ./server.js instead of glob pattern for Windows compatibility
* fix(build): use double quotes for banner to fix Windows cmd.exe compatibility
---------
Co-authored-by: Olivier Chafik <ochafik@anthropic.com>
* map-server: fix async/await in ontoolresult, remove unused getViewStorageKey
* fix(map-server): improve updateModelContext and fix initialization
- Use structured YAML frontmatter format for model context (like pdf-server)
- Add tool name, altitude, and cleaner data format
- Fix initialization deadlock: app.connect() was inside ontoolresult handler
which could never fire until connected
- Fix view state persistence: widgetUUID now properly extracted from
ontoolresult and used to restore persisted camera position
- Server now includes widgetUUID in tool result _meta for widget identification
* fix(pdf-server): use widgetUUID for page persistence
- Add widgetUUID to tool result _meta for widget identification
- Use widgetUUID instead of generated key (pdfUrl+toolId) for localStorage
- Enables reliable page restoration when revisiting PDF widgets
* fix(transcript-server): use structured YAML frontmatter for model context
- Add tool name, listening status, and unsent entry count in frontmatter
- Consistent format with pdf-server and map-server
* update names
* drop bogus altitude
* Update mcp-app.ts
- Add `.gitignore` files to all 19 examples (`node_modules/`, `dist/`)
- Replace custom `log` objects with standard `console` methods
- Add `ontoolcancelled` handler to all `basic-server-*` examples
- Add host styling integration (`applyDocumentTheme`, `applyHostFonts`,
`applyHostStyleVariables`) to non-React `basic-server-*` examples
- Add section headers for better code organization in feature examples
- Update READMEs with Build System section explaining single-file
bundling
These changes make examples more consistent and easier to adapt.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
* feat: add script to generate 300x300 grid-cell.png screenshots for examples
- Add generate-grid-screenshots.spec.ts Playwright test to capture screenshots
- Add npm run generate:screenshots command (Docker-based for Santa compatibility)
- Add sharp dependency for image resizing with centered-fill mode
- Generate grid-cell.png for 14 example servers (only React for basic-server-* series)
The screenshots are 300x300 PNG images cropped with centered fill mode,
suitable for use in a grid layout showcasing the examples.
* docs: add example gallery grid to README
Add a 3-column visual grid showcasing 14 example MCP Apps with:
- Thumbnail screenshots (300x300 grid-cell.png)
- Clickable links to example directories
- Hover tooltips with brief descriptions
Organized by visual impact: 3D/WebGL examples first, then
visualizations, charts, monitoring, and starter templates.
* fix: use aspect-fit instead of crop for screenshots
Change from fit: 'cover' (crops) to fit: 'contain' (letterbox)
so the full app content is visible without cropping.
* feat: improve screenshot generation
- Constrain viewport to 500px width for consistent rendering
- Wait 5 seconds for full app load (tiles, animations, data)
- Screenshot just the inner iframe (no extra whitespace)
- Save both screenshot.png (full-size) and grid-cell.png (300x300 thumbnail)
- Use contain mode to preserve aspect ratio
* fix: use cover mode with top alignment for grid thumbnails
No letterboxing - crops to fill 300x300, aligned to top so headers
and important content are always visible.
* feat: improve screenshot gallery
- Remove integration-server from gallery (it's for E2E testing only)
- Add 30s extra wait for Map and Video servers to load fully
- Improve Three.js default scene: isometric rotation + better lighting
- Update README: Starter Templates row with links to all framework variants
(React, Vue, Svelte, Preact, Solid, Vanilla JS)
- Regenerate all screenshots with updated settings
* fix: improve README gallery layout
- Fix uneven column widths by using minimal separator
- Move Starter Templates to separate 2-cell table with description
- Add screenshot.png to top of each example README (13 examples)
- Shorten tooltips for cleaner table
* revert to document.write again; cesiumjs doesn't like srcdoc, period.
* fix: map-server screenshot now renders properly
- Merged ochafik/post-fixes which reverts sandbox from srcdoc to document.write
(CesiumJS doesn't work with srcdoc iframes)
- Fixed map-server name in screenshot test ('Map Server' not 'CesiumJS Map Server')
- Simplified screenshot generation script (removed complex debugging code)
- Increased map-server wait time to 45s for reliable tile loading
- Regenerated all 13 screenshots
* fix: remove redundant screenshots from READMEs
Remove the simple \ line from READMEs that
already had nicer HTML table screenshots. Keep it only for examples
that didn't have existing screenshots.
* docs: move gallery to Examples section
- Move screenshot gallery from top of README to Examples section
- Remove redundant list of basic examples (now shown visually in gallery)
- Clean up duplicate run instructions
* fix: remove empty header row from starter templates table
* fix: remove empty header rows from both tables
* fix: add prettier-ignore to prevent table header expansion
* feat: use custom screenshot for video-resource-server
- Use better screenshot from PR #253 comment showing actual video playback
- Skip video-resource-server in screenshot generation script
- Add SKIP_SERVERS set for manually maintained screenshots
* fix: revert unrelated map-server name change
* fix: use correct server name 'CesiumJS Map Server' in screenshot test
* chore: release 0.4.0
* chore: add new examples to npm publish workflow
Add map-server, shadertoy-server, and transcript-server to the
publish-examples matrix.
* feat(map): add keyboard shortcuts for fullscreen control
- Escape: exit fullscreen when in fullscreen mode
- Ctrl/Cmd+Enter: toggle fullscreen from any mode
* feat(map): persist view state to localStorage
- Save camera position/orientation on moveEnd (debounced 500ms)
- Restore persisted view when no explicit tool input is received
- Key by toolInfo.id (tool invocation ID) - localStorage is per-conversation
- Tool input (explicit bbox) takes precedence over persisted state
* refactor(map): use app.updateModelContext() instead of adhoc request
* feat: Add CesiumJS map server example
A WebGL-based 3D globe example that demonstrates:
- CesiumJS integration with MCP Apps
- CSP configuration for external tile servers
- worker-src directive usage for tile decoding
Tools:
- geocode: Search places via OpenStreetMap Nominatim
- show-map: Display interactive 3D globe at coordinates
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
* comment out app.registerTool call for now
* prettier
* fix error handling in server-utils.ts
* refactor: rename cesium-map-server to map-server
- Rename examples/cesium-map-server to examples/map-server
- Update package name to @modelcontextprotocol/server-map
- Add README.md with documentation
* style: add min-height of 400px to map container
* feat(map-server): add fullscreen support, clean UI, sharp rendering
- Add fullscreen toggle button (only shown if host supports it)
- Use autoResize: false and manually send height of 400px
- Hide Cesium UI controls (home, scene mode picker)
- Remove location label (gets stale quickly)
- Use full device pixel ratio for sharp rendering on high-DPI displays
- Resize Cesium viewer when display mode changes
* feat(map-server): add reverse geocoding (logging only) and rounded corners
- Add camera move end listener for reverse geocoding
- Debounce Nominatim API calls (1.5s) to respect rate limits
- Log location name to console on camera move
- Add nominatim.openstreetmap.org to CSP connectDomains
- Add 8px rounded corners to map container
* fix(map-server): fix pixelated rendering on high-DPI displays
- Set canvas imageRendering to 'auto' (CesiumJS defaults to pixelated)
- Set resolutionScale to window.devicePixelRatio for native resolution
* tweaks
* update model context w/ current location
* fix(map-server): improve rendering quality and add visible extent logging
Rendering fixes:
- Remove incorrect resolutionScale = devicePixelRatio which was doubling
the scaling factor on Retina displays (2x2=4x), causing blurriness
- Disable FXAA anti-aliasing which can cause blurriness on high-DPI displays
- Keep useBrowserRecommendedResolution: false to use native devicePixelRatio
Reverse geocoding improvements:
- Add getVisibleExtent() using camera.computeViewRectangle() to get the
visible bounding box (west, south, east, north)
- Add getScaleDimensions() to calculate visible area in km
- Add calculateNominatimZoom() to map visible extent to appropriate
Nominatim zoom level (3=country to 18=building)
- Log visible extent with dimensions on each camera move
- Pass zoom parameter to Nominatim for context-aware geocoding results
- Update model context with visible area dimensions
* fix(map-server): direct positioning + wait for tiles before showing
Changes:
- Remove zoom granularity logic from reverse geocoding (was not working)
- Keep extent logging in both console and model context
- Replace flyTo animation with instant setView positioning
- Add waitForTilesLoaded() to detect when tiles finish loading
- Keep loading spinner visible until:
1. Tool input positions camera to destination
2. Tiles at destination are fully loaded
- Add 5-second fallback timeout if no tool input received
- Add 10-second timeout for tile loading to prevent infinite wait
* feat(map-server): use viewbox search to find visible places
Replace center-point reverse geocoding with Nominatim viewbox search:
- Add searchPlacesInBox() that queries Nominatim with bounded viewbox
- Uses layer=address&featuretype=settlement to find cities/towns
- Returns up to 5 visible places in the current view
- Update model context with 'Visible places: City1, City2, ...'
- Still includes center coordinates and extent dimensions
This provides better context about what's actually visible on the map
rather than just the address at the center point.
* fix(map-server): use CARTO @2x retina tiles for sharp rendering
Root cause: Standard OSM tiles are 256x256 pixels. On Retina displays
(devicePixelRatio=2), these get scaled up 2x, making them look pixelated.
Solution: Switch to CARTO Voyager tiles which provide @2x retina support:
- Detect high-DPI displays using window.devicePixelRatio
- Use 512x512 tiles with @2x suffix on Retina displays
- Use 256x256 tiles on standard displays
- Set tileWidth/tileHeight to match actual tile size
- Use CARTO subdomains (a,b,c,d) for load balancing
- Update CSP to allow CARTO tile domains
CARTO Voyager provides clean OSM-based tiles with free @2x retina support,
no API key required.
* fix(map-server): use OSM tiles and fix reverse geocoding
- Switch back from CARTO to standard OSM tiles (tile.openstreetmap.org)
for better detail and label rendering
- Fix geocoding: use reverse geocode API instead of search API
(search API requires a q= parameter, returns 400 without it)
- Update CSP domains for OSM tile server
* fix(map-server): use *.openstreetmap.org wildcard in CSP
Simplify CSP to use wildcard for both tiles and geocoding:
- connectDomains: *.openstreetmap.org covers tile.* and nominatim.*
- resourceDomains: *.openstreetmap.org for tile images
* feat(map-server): multi-point sampling for visible places
- Sample multiple points in visible extent to discover places
- Adaptive sampling based on extent size:
- < 30km: center only (city zoom)
- 30-100km: center + 2 corners
- > 100km: center + 4 quadrants
- Proper rate limiting for Nominatim (1.1s between requests)
- Shows 'Visible places: City1, City2, ...' in model context
- Fix: move geocode tool registration inside createServer()
* format
* fix(map-server): fix Express listen callback + add e2e tests
- Fix incorrect Express listen() callback signature (err param doesn't exist)
- Add map-server to e2e test suite with SLOW_SERVERS timeout (5s for tiles)
- Improve comment about experimental ui/update-model-context API
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
---------
Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
