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Please reload this page . modelcontextprotocol / ext-apps Public * Notifications You must be signed in to change notification settings * Fork 376 * Star 2.8k * Code * Issues 124 * Pull requests 82 * Discussions * Actions * Projects * Security and quality 0 * Insights Additional navigation options * Code * Issues * Pull requests * Discussions * Actions * Projects * Security and quality * Insights Files Expand file tree main Breadcrumbs * ext-apps * / examples / basic-server-solid / Copy path Directory actions More options More options Directory actions More options More options Latest commit   History History History main Breadcrumbs * ext-apps * / examples / basic-server-solid / Copy path Top Folders and files Name Name Last commit message Last commit date parent directory .. src src     .gitignore .gitignore     README.md README.md     main.ts main.ts     mcp-app.html mcp-app.html     package.json package.json     server.ts server.ts     tsconfig.json tsconfig.json     tsconfig.server.json tsconfig.server.json     vite.config.ts vite.config.ts     View all files README.md Outline Example: Basic Server (Solid) An MCP App example with a Solid UI. Tip Looking for a vanilla JavaScript example? See basic-server-vanillajs ! MCP Client Configuration Add to your MCP client configuration (stdio transport): { "mcpServers" : { "basic-solid" : { "command" : " npx " , "args" : [ " -y " , " --silent " , " --registry=https://registry.npmjs.org/ " , " @modelcontextprotocol/server-basic-solid " , " --stdio " ] } } } Local Development To test local modifications, use this configuration (replace ~/code/ext-apps with your clone path): { "mcpServers" : { "basic-solid" : { "command" : " bash " , "args" : [ " -c " , " cd ~/code/ext-apps/examples/basic-server-solid && npm run build >&2 && node dist/index.js --stdio " ] } } } Overview * Tool registration with a linked UI resource * Solid UI using the App class * App communication APIs: callServerTool , sendMessage , sendLog , openLink Key Files * server.ts - MCP server with tool and resource registration * mcp-app.html / src/mcp-app.tsx - Solid UI using App class Getting Started npm install npm run dev How It Works * The server registers a get-time tool with metadata linking it to a UI HTML resource ( ui://get-time/mcp-app.html ). * When the tool is invoked, the Host renders the UI from the resource. * The UI uses the MCP App SDK API to communicate with the host and call server tools. Build System This example bundles into a single HTML file using Vite with vite-plugin-singlefile — see vite.config.ts . This allows all UI content to be served as a single MCP resource. Alternatively, MCP apps can load external resources by defining _meta.ui.csp.resourceDomains in the UI resource metadata. Footer (c) 2026 GitHub, Inc. Footer navigation * Terms * Privacy * Security * Status * Community * Docs * Contact * Manage cookies * Do not share my personal information You can’t perform that action at this time.