@mcp-apps-kit/create-app - npm Package Compare versions

Comparing version 0.2.4 to 0.2.5

dist/cli.js

@@ -99,5 +99,13 @@ #!/usr/bin/env node
 
-import { createApp } from "@mcp-apps-kit/core";
+import { createApp, defineTool, defineUI } from "@mcp-apps-kit/core";
 import { z } from "zod";
 
+// Define the UI for displaying greetings
+const greetingUI = defineUI({
+  name: "Greeting Widget",
+  description: "Displays greeting messages",
+  html: "./${uiOutputDir}/index.html",
+  prefersBorder: true,
+});
+
 const app = createApp({
@@ -108,3 +116,4 @@ name: "${name}",
   tools: {
-    hello: {
+    hello: defineTool({
+      title: "Hello",
       description: "Say hello to someone",
@@ -124,13 +133,5 @@ input: z.object({
       },
-      ui: "greeting",
-    },
+      ui: greetingUI,
+    }),
   },
-
-  ui: {
-    greeting: {
-      html: "./${uiOutputDir}/index.html",
-      description: "Greeting widget",
-      prefersBorder: true,
-    },
-  },
 });
@@ -150,5 +151,13 @@
 
-import { createApp } from "@mcp-apps-kit/core";
+import { createApp, defineTool, defineUI } from "@mcp-apps-kit/core";
 import { z } from "zod";
 
+// Define the UI for displaying greetings
+const greetingUI = defineUI({
+  name: "Greeting Widget",
+  description: "Displays greeting messages",
+  html: "./ui/dist/index.html",
+  prefersBorder: true,
+});
+
 const app = createApp({
@@ -159,3 +168,4 @@ name: "${name}",
   tools: {
-    hello: {
+    hello: defineTool({
+      title: "Hello",
       description: "Say hello to someone",
@@ -175,13 +185,5 @@ input: z.object({
       },
-      ui: "greeting",
-    },
+      ui: greetingUI,
+    }),
   },
-
-  ui: {
-    greeting: {
-      html: "./ui/dist/index.html",
-      description: "Greeting widget",
-      prefersBorder: true,
-    },
-  },
 });
@@ -490,5 +492,13 @@
 
-import { createApp } from "@mcp-apps-kit/core";
+import { createApp, defineTool, defineUI } from "@mcp-apps-kit/core";
 import { z } from "zod";
 
+// Define the UI for displaying greetings
+const greetingUI = defineUI({
+  name: "Greeting Widget",
+  description: "Displays greeting messages",
+  html: "./${uiOutputDir}/index.html",
+  prefersBorder: true,
+});
+
 const app = createApp({
@@ -499,3 +509,4 @@ name: "${name}",
   tools: {
-    hello: {
+    hello: defineTool({
+      title: "Hello",
       description: "Say hello to someone",
@@ -515,13 +526,5 @@ input: z.object({
       },
-      ui: "greeting",
-    },
+      ui: greetingUI,
+    }),
   },
-
-  ui: {
-    greeting: {
-      html: "./${uiOutputDir}/index.html",
-      description: "Greeting widget",
-      prefersBorder: true,
-    },
-  },
 });
@@ -541,5 +544,13 @@
 
-import { createApp } from "@mcp-apps-kit/core";
+import { createApp, defineTool, defineUI } from "@mcp-apps-kit/core";
 import { z } from "zod";
 
+// Define the UI for displaying greetings
+const greetingUI = defineUI({
+  name: "Greeting Widget",
+  description: "Displays greeting messages",
+  html: "./ui/dist/index.html",
+  prefersBorder: true,
+});
+
 const app = createApp({
@@ -550,3 +561,4 @@ name: "${name}",
   tools: {
-    hello: {
+    hello: defineTool({
+      title: "Hello",
       description: "Say hello to someone",
@@ -566,13 +578,5 @@ input: z.object({
       },
-      ui: "greeting",
-    },
+      ui: greetingUI,
+    }),
   },
-
-  ui: {
-    greeting: {
-      html: "./ui/dist/index.html",
-      description: "Greeting widget",
-      prefersBorder: true,
-    },
-  },
 });
@@ -579,0 +583,0 @@

dist/cli.js.map

@@ -1,1 +0,1 @@
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*/\nfunction fetchLatestVersion(packageName: string): string {\n  try {\n    const result = execSync(`npm view ${packageName} version`, {\n      encoding: \"utf-8\",\n      stdio: [\"pipe\", \"pipe\", \"pipe\"],\n    }).trim();\n    return `^${result}`;\n  } catch {\n    // Fallback to a reasonable default if we can't fetch\n    return \"^0.2.0\";\n  }\n}\n\n/**\n * Get the versions of @mcp-apps-kit packages from npm registry\n */\nfunction getPackageVersions(): PackageVersions {\n  if (cachedVersions) {\n    return cachedVersions;\n  }\n\n  cachedVersions = {\n    core: fetchLatestVersion(\"@mcp-apps-kit/core\"),\n    ui: fetchLatestVersion(\"@mcp-apps-kit/ui\"),\n    uiReact: fetchLatestVersion(\"@mcp-apps-kit/ui-react\"),\n  };\n\n  return cachedVersions;\n}\n\n// =============================================================================\n// Template Content\n// =============================================================================\n\nfunction getReactTemplate(name: string, vercel = false): Record<string, string> {\n  const uiOutputDir = vercel ? \"public\" : \"dist\";\n  const packageManager = vercel ? \"npm\" : \"pnpm\";\n  const versions = getPackageVersions();\n\n  const files: Record<string, string> = {\n    \"package.json\": JSON.stringify(\n      {\n        name,\n        version: \"0.1.0\",\n        type: \"module\",\n        scripts: {\n          dev: `concurrently \"${packageManager} run dev:server\" \"${packageManager} run dev:ui\"`,\n          \"dev:server\": \"tsx watch server/index.ts\",\n          \"dev:ui\": \"vite --config ui/vite.config.ts\",\n          build: `${packageManager} run build:ui && tsc`,\n          \"build:ui\": \"vite build --config ui/vite.config.ts\",\n          start: \"node dist/server/index.js\",\n        },\n        dependencies: {\n          \"@mcp-apps-kit/core\": versions.core,\n          \"@mcp-apps-kit/ui\": versions.ui,\n          \"@mcp-apps-kit/ui-react\": versions.uiReact,\n          react: \"^18.2.0\",\n          \"react-dom\": \"^18.2.0\",\n          zod: \"^3.22.0\",\n          ...(vercel ? { express: \"^4.21.0\" } : {}),\n        },\n        devDependencies: {\n          \"@types/react\": \"^18.2.0\",\n          \"@types/react-dom\": \"^18.2.0\",\n          \"@vitejs/plugin-react\": \"^4.2.0\",\n          concurrently: \"^8.2.0\",\n          tsx: \"^4.7.0\",\n          typescript: \"^5.3.0\",\n          vite: \"^5.0.0\",\n          \"vite-plugin-singlefile\": \"^2.0.0\",\n        },\n      },\n      null,\n      2\n    ),\n    \"tsconfig.json\": JSON.stringify(\n      {\n        compilerOptions: {\n          target: \"ES2020\",\n          module: \"ESNext\",\n          moduleResolution: \"bundler\",\n          strict: true,\n          esModuleInterop: true,\n          skipLibCheck: true,\n          declaration: true,\n          outDir: \"dist\",\n          jsx: \"react-jsx\",\n        },\n        include: [\"server/**/*\", \"ui/src/**/*\"],\n        exclude: [\"node_modules\", \"dist\"],\n      },\n      null,\n      2\n    ),\n    \"server/index.ts\": vercel\n      ? `/**\n * ${name} - MCP Server\n */\n\n// Required for Vercel to detect Express\nimport \"express\";\n\nimport { createApp } from \"@mcp-apps-kit/core\";\nimport { z } from \"zod\";\n\nconst app = createApp({\n  name: \"${name}\",\n  version: \"0.1.0\",\n\n  tools: {\n    hello: {\n      description: \"Say hello to someone\",\n      input: z.object({\n        name: z.string().describe(\"Name to greet\"),\n      }),\n      output: z.object({\n        message: z.string(),\n        timestamp: z.string(),\n      }),\n      handler: async ({ name }) => {\n        return {\n          message: \\`Hello, \\${name}!\\`,\n          timestamp: new Date().toISOString(),\n        };\n      },\n      ui: \"greeting\",\n    },\n  },\n\n  ui: {\n    greeting: {\n      html: \"./${uiOutputDir}/index.html\",\n      description: \"Greeting widget\",\n      prefersBorder: true,\n    },\n  },\n});\n\n// Only start locally - Vercel uses the exported Express app\nif (!process.env.VERCEL) {\n  await app.start({ port: 3000 });\n  console.log(\"MCP server running on http://localhost:3000\");\n}\n\n// Export Express app for Vercel\nexport default app.expressApp;\n`\n      : `/**\n * ${name} - MCP Server\n */\n\nimport { createApp } from \"@mcp-apps-kit/core\";\nimport { z } from \"zod\";\n\nconst app = createApp({\n  name: \"${name}\",\n  version: \"0.1.0\",\n\n  tools: {\n    hello: {\n      description: \"Say hello to someone\",\n      input: z.object({\n        name: z.string().describe(\"Name to greet\"),\n      }),\n      output: z.object({\n        message: z.string(),\n        timestamp: z.string(),\n      }),\n      handler: async ({ name }) => {\n        return {\n          message: \\`Hello, \\${name}!\\`,\n          timestamp: new Date().toISOString(),\n        };\n      },\n      ui: \"greeting\",\n    },\n  },\n\n  ui: {\n    greeting: {\n      html: \"./ui/dist/index.html\",\n      description: \"Greeting widget\",\n      prefersBorder: true,\n    },\n  },\n});\n\n// Start server\nawait app.start({ port: 3000 });\nconsole.log(\"MCP server running on http://localhost:3000\");\n`,\n    \"ui/src/App.tsx\": `/**\n * ${name} - UI Component\n */\n\nimport {\n  useAppsClient,\n  useHostContext,\n  useDocumentTheme,\n  useHostStyleVariables,\n} from \"@mcp-apps-kit/ui-react\";\n\nexport function App() {\n  const client = useAppsClient();\n  const context = useHostContext();\n\n  // Apply theme and host styles\n  useDocumentTheme(\"light\", \"dark\");\n  useHostStyleVariables();\n\n  // Get tool output from client\n  const output = client.toolOutput as { message?: string; timestamp?: string } | undefined;\n\n  return (\n    <div className=\"container\">\n      {output?.message ? (\n        <div className=\"greeting\">\n          <h1>{output.message}</h1>\n          <p className=\"timestamp\">Sent at: {output.timestamp}</p>\n        </div>\n      ) : (\n        <p className=\"waiting\">Waiting for greeting...</p>\n      )}\n\n      <button\n        className=\"button\"\n        onClick={() => client.sendFollowUpMessage(\"Please greet me again!\")}\n      >\n        Request New Greeting\n      </button>\n\n      <footer className=\"meta\">\n        Theme: {context.theme} | Locale: {context.locale}\n      </footer>\n    </div>\n  );\n}\n`,\n    \"ui/src/main.tsx\": `/**\n * ${name} - UI Entry Point\n */\n\nimport React from \"react\";\nimport { createRoot } from \"react-dom/client\";\nimport { AppsProvider } from \"@mcp-apps-kit/ui-react\";\nimport { App } from \"./App\";\nimport \"./styles.css\";\n\nconst root = document.getElementById(\"root\");\nif (!root) throw new Error(\"Root element not found\");\n\ncreateRoot(root).render(\n  <React.StrictMode>\n    <AppsProvider>\n      <App />\n    </AppsProvider>\n  </React.StrictMode>\n);\n`,\n    \"ui/src/styles.css\": `* {\n  margin: 0;\n  padding: 0;\n  box-sizing: border-box;\n}\n\nbody {\n  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;\n  padding: 16px;\n}\n\n.container {\n  max-width: 400px;\n  margin: 0 auto;\n}\n\n.greeting h1 {\n  font-size: 1.5rem;\n  margin-bottom: 8px;\n}\n\n.timestamp {\n  color: #666;\n  font-size: 0.875rem;\n}\n\n.waiting {\n  color: #999;\n  font-style: italic;\n}\n\n.button {\n  margin-top: 16px;\n  padding: 8px 16px;\n  background: #0066cc;\n  color: white;\n  border: none;\n  border-radius: 4px;\n  cursor: pointer;\n}\n\n.button:hover {\n  background: #0052a3;\n}\n\n.meta {\n  margin-top: 24px;\n  padding-top: 16px;\n  border-top: 1px solid #eee;\n  font-size: 0.75rem;\n  color: #999;\n}\n\n/* Dark mode support */\n.dark body {\n  background: #1a1a1a;\n  color: #fff;\n}\n\n.dark .timestamp {\n  color: #aaa;\n}\n\n.dark .meta {\n  border-color: #333;\n  color: #666;\n}\n`,\n    \"ui/index.html\": `<!DOCTYPE html>\n<html lang=\"en\">\n  <head>\n    <meta charset=\"UTF-8\" />\n    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\" />\n    <title>${name}</title>\n  </head>\n  <body>\n    <div id=\"root\"></div>\n    <script type=\"module\" src=\"/src/main.tsx\"></script>\n  </body>\n</html>\n`,\n    \"ui/vite.config.ts\": `import { defineConfig } from \"vite\";\nimport react from \"@vitejs/plugin-react\";\nimport { viteSingleFile } from \"vite-plugin-singlefile\";\n\nexport default defineConfig({\n  plugins: [react(), viteSingleFile()],\n  root: \"./ui\",\n  build: {\n    outDir: \"${uiOutputDir}\",\n    emptyOutDir: true,\n  },\n});\n`,\n    \".gitignore\": `node_modules/\ndist/\npublic/\n*.log\n.env\n.env.local\n`,\n    \"README.md\": `# ${name}\n\nAn MCP application built with @mcp-apps-kit.\n\n## Development\n\n\\`\\`\\`bash\n${packageManager} install\n${packageManager} run dev\n\\`\\`\\`\n\n## Build\n\n\\`\\`\\`bash\n${packageManager} run build\n\\`\\`\\`\n\n## Connecting to Claude Desktop\n\nAdd to your Claude Desktop config:\n\n\\`\\`\\`json\n{\n  \"mcpServers\": {\n    \"${name}\": {\n      \"command\": \"npx\",\n      \"args\": [\"tsx\", \"path/to/${name}/server/index.ts\"]\n    }\n  }\n}\n\\`\\`\\`\n${\n  vercel\n    ? `\n## Deploy to Vercel\n\nThis project is configured for Vercel deployment:\n\n\\`\\`\\`bash\nvercel deploy\n\\`\\`\\`\n\nThen use the deployed URL as your MCP server endpoint.\n`\n    : \"\"\n}\n`,\n  };\n\n  // Add vercel.json if Vercel setup is enabled\n  if (vercel) {\n    files[\"vercel.json\"] = JSON.stringify(\n      {\n        installCommand: \"npm install\",\n        buildCommand: \"npm run build:ui\",\n        outputDirectory: \".\",\n        functions: {\n          \"server/index.ts\": {\n            includeFiles: `${uiOutputDir}/**`,\n          },\n        },\n        rewrites: [\n          {\n            source: \"/(.*)\",\n            destination: \"/server/index.ts\",\n          },\n        ],\n      },\n      null,\n      2\n    );\n  }\n\n  return files;\n}\n\nfunction getVanillaTemplate(name: string, vercel = false): Record<string, string> {\n  const uiOutputDir = vercel ? \"public\" : \"dist\";\n  const packageManager = vercel ? \"npm\" : \"pnpm\";\n  const versions = getPackageVersions();\n\n  const files: Record<string, string> = {\n    \"package.json\": JSON.stringify(\n      {\n        name,\n        version: \"0.1.0\",\n        type: \"module\",\n        scripts: {\n          dev: `concurrently \"${packageManager} run dev:server\" \"${packageManager} run dev:ui\"`,\n          \"dev:server\": \"tsx watch server/index.ts\",\n          \"dev:ui\": \"vite --config ui/vite.config.ts\",\n          build: `${packageManager} run build:ui && tsc`,\n          \"build:ui\": \"vite build --config ui/vite.config.ts\",\n          start: \"node dist/server/index.js\",\n        },\n        dependencies: {\n          \"@mcp-apps-kit/core\": versions.core,\n          \"@mcp-apps-kit/ui\": versions.ui,\n          zod: \"^3.22.0\",\n          ...(vercel ? { express: \"^4.21.0\" } : {}),\n        },\n        devDependencies: {\n          concurrently: \"^8.2.0\",\n          tsx: \"^4.7.0\",\n          typescript: \"^5.3.0\",\n          vite: \"^5.0.0\",\n          \"vite-plugin-singlefile\": \"^2.0.0\",\n        },\n      },\n      null,\n      2\n    ),\n    \"tsconfig.json\": JSON.stringify(\n      {\n        compilerOptions: {\n          target: \"ES2020\",\n          module: \"ESNext\",\n          moduleResolution: \"bundler\",\n          strict: true,\n          esModuleInterop: true,\n          skipLibCheck: true,\n          declaration: true,\n          outDir: \"dist\",\n        },\n        include: [\"server/**/*\", \"ui/src/**/*\"],\n        exclude: [\"node_modules\", \"dist\"],\n      },\n      null,\n      2\n    ),\n    \"server/index.ts\": vercel\n      ? `/**\n * ${name} - MCP Server\n */\n\n// Required for Vercel to detect Express\nimport \"express\";\n\nimport { createApp } from \"@mcp-apps-kit/core\";\nimport { z } from \"zod\";\n\nconst app = createApp({\n  name: \"${name}\",\n  version: \"0.1.0\",\n\n  tools: {\n    hello: {\n      description: \"Say hello to someone\",\n      input: z.object({\n        name: z.string().describe(\"Name to greet\"),\n      }),\n      output: z.object({\n        message: z.string(),\n        timestamp: z.string(),\n      }),\n      handler: async ({ name }) => {\n        return {\n          message: \\`Hello, \\${name}!\\`,\n          timestamp: new Date().toISOString(),\n        };\n      },\n      ui: \"greeting\",\n    },\n  },\n\n  ui: {\n    greeting: {\n      html: \"./${uiOutputDir}/index.html\",\n      description: \"Greeting widget\",\n      prefersBorder: true,\n    },\n  },\n});\n\n// Only start locally - Vercel uses the exported Express app\nif (!process.env.VERCEL) {\n  await app.start({ port: 3000 });\n  console.log(\"MCP server running on http://localhost:3000\");\n}\n\n// Export Express app for Vercel\nexport default app.expressApp;\n`\n      : `/**\n * ${name} - MCP Server\n */\n\nimport { createApp } from \"@mcp-apps-kit/core\";\nimport { z } from \"zod\";\n\nconst app = createApp({\n  name: \"${name}\",\n  version: \"0.1.0\",\n\n  tools: {\n    hello: {\n      description: \"Say hello to someone\",\n      input: z.object({\n        name: z.string().describe(\"Name to greet\"),\n      }),\n      output: z.object({\n        message: z.string(),\n        timestamp: z.string(),\n      }),\n      handler: async ({ name }) => {\n        return {\n          message: \\`Hello, \\${name}!\\`,\n          timestamp: new Date().toISOString(),\n        };\n      },\n      ui: \"greeting\",\n    },\n  },\n\n  ui: {\n    greeting: {\n      html: \"./ui/dist/index.html\",\n      description: \"Greeting widget\",\n      prefersBorder: true,\n    },\n  },\n});\n\n// Start server\nawait app.start({ port: 3000 });\nconsole.log(\"MCP server running on http://localhost:3000\");\n`,\n    \"ui/src/main.ts\": `/**\n * ${name} - UI Entry Point\n */\n\nimport { createClient } from \"@mcp-apps-kit/ui\";\nimport \"./styles.css\";\n\nasync function main() {\n  const client = await createClient();\n\n  // Get container\n  const container = document.getElementById(\"app\");\n  if (!container) throw new Error(\"Container not found\");\n\n  // Render initial UI\n  render(container, client);\n\n  // Subscribe to context changes\n  client.onHostContextChange((context) => {\n    document.documentElement.className = context.theme;\n    render(container, client);\n  });\n}\n\nfunction render(container: HTMLElement, client: ReturnType<typeof createClient> extends Promise<infer T> ? T : never) {\n  const output = client.toolOutput as { message?: string; timestamp?: string } | undefined;\n  const context = client.hostContext;\n\n  container.innerHTML = \\`\n    <div class=\"container\">\n      \\${output?.message ? \\`\n        <div class=\"greeting\">\n          <h1>\\${output.message}</h1>\n          <p class=\"timestamp\">Sent at: \\${output.timestamp}</p>\n        </div>\n      \\` : \\`\n        <p class=\"waiting\">Waiting for greeting...</p>\n      \\`}\n\n      <button class=\"button\" id=\"request-btn\">\n        Request New Greeting\n      </button>\n\n      <footer class=\"meta\">\n        Theme: \\${context.theme} | Locale: \\${context.locale}\n      </footer>\n    </div>\n  \\`;\n\n  // Add event listener\n  const btn = document.getElementById(\"request-btn\");\n  btn?.addEventListener(\"click\", () => {\n    client.sendFollowUpMessage(\"Please greet me again!\");\n  });\n}\n\nmain();\n`,\n    \"ui/src/styles.css\": `* {\n  margin: 0;\n  padding: 0;\n  box-sizing: border-box;\n}\n\nbody {\n  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;\n  padding: 16px;\n}\n\n.container {\n  max-width: 400px;\n  margin: 0 auto;\n}\n\n.greeting h1 {\n  font-size: 1.5rem;\n  margin-bottom: 8px;\n}\n\n.timestamp {\n  color: #666;\n  font-size: 0.875rem;\n}\n\n.waiting {\n  color: #999;\n  font-style: italic;\n}\n\n.button {\n  margin-top: 16px;\n  padding: 8px 16px;\n  background: #0066cc;\n  color: white;\n  border: none;\n  border-radius: 4px;\n  cursor: pointer;\n}\n\n.button:hover {\n  background: #0052a3;\n}\n\n.meta {\n  margin-top: 24px;\n  padding-top: 16px;\n  border-top: 1px solid #eee;\n  font-size: 0.75rem;\n  color: #999;\n}\n\n/* Dark mode support */\n.dark body {\n  background: #1a1a1a;\n  color: #fff;\n}\n\n.dark .timestamp {\n  color: #aaa;\n}\n\n.dark .meta {\n  border-color: #333;\n  color: #666;\n}\n`,\n    \"ui/index.html\": `<!DOCTYPE html>\n<html lang=\"en\">\n  <head>\n    <meta charset=\"UTF-8\" />\n    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\" />\n    <title>${name}</title>\n  </head>\n  <body>\n    <div id=\"app\"></div>\n    <script type=\"module\" src=\"/src/main.ts\"></script>\n  </body>\n</html>\n`,\n    \"ui/vite.config.ts\": `import { defineConfig } from \"vite\";\nimport { viteSingleFile } from \"vite-plugin-singlefile\";\n\nexport default defineConfig({\n  plugins: [viteSingleFile()],\n  root: \"./ui\",\n  build: {\n    outDir: \"${uiOutputDir}\",\n    emptyOutDir: true,\n  },\n});\n`,\n    \".gitignore\": `node_modules/\ndist/\npublic/\n*.log\n.env\n.env.local\n`,\n    \"README.md\": `# ${name}\n\nAn MCP application built with @mcp-apps-kit.\n\n## Development\n\n\\`\\`\\`bash\n${packageManager} install\n${packageManager} run dev\n\\`\\`\\`\n\n## Build\n\n\\`\\`\\`bash\n${packageManager} run build\n\\`\\`\\`\n\n## Connecting to Claude Desktop\n\nAdd to your Claude Desktop config:\n\n\\`\\`\\`json\n{\n  \"mcpServers\": {\n    \"${name}\": {\n      \"command\": \"npx\",\n      \"args\": [\"tsx\", \"path/to/${name}/server/index.ts\"]\n    }\n  }\n}\n\\`\\`\\`\n${\n  vercel\n    ? `\n## Deploy to Vercel\n\nThis project is configured for Vercel deployment:\n\n\\`\\`\\`bash\nvercel deploy\n\\`\\`\\`\n\nThen use the deployed URL as your MCP server endpoint.\n`\n    : \"\"\n}\n`,\n  };\n\n  // Add vercel.json if Vercel setup is enabled\n  if (vercel) {\n    files[\"vercel.json\"] = JSON.stringify(\n      {\n        installCommand: \"npm install\",\n        buildCommand: \"npm run build:ui\",\n        outputDirectory: \".\",\n        functions: {\n          \"server/index.ts\": {\n            includeFiles: `${uiOutputDir}/**`,\n          },\n        },\n        rewrites: [\n          {\n            source: \"/(.*)\",\n            destination: \"/server/index.ts\",\n          },\n        ],\n      },\n      null,\n      2\n    );\n  }\n\n  return files;\n}\n\n// =============================================================================\n// Scaffolding Logic\n// =============================================================================\n\n/**\n * Scaffold a new MCP application project\n */\nexport async function scaffoldProject(options: CreateAppOptions): Promise<void> {\n  const {\n    name,\n    template,\n    directory,\n    vercel = false,\n    skipInstall = false,\n    skipGit = false,\n  } = options;\n\n  // Determine project directory\n  const projectDir = directory ?? path.resolve(process.cwd(), name);\n\n  // Check if directory exists and is not empty\n  if (fs.existsSync(projectDir)) {\n    const files = fs.readdirSync(projectDir);\n    if (files.length > 0) {\n      throw new Error(`Directory ${projectDir} is not empty. Please use an empty directory.`);\n    }\n  } else {\n    fs.mkdirSync(projectDir, { recursive: true });\n  }\n\n  // Get template files\n  const templateFiles =\n    template === \"react\" ? getReactTemplate(name, vercel) : getVanillaTemplate(name, vercel);\n\n  // Write all files\n  for (const [filePath, content] of Object.entries(templateFiles)) {\n    const fullPath = path.join(projectDir, filePath);\n    const dir = path.dirname(fullPath);\n\n    // Create directory if needed\n    if (!fs.existsSync(dir)) {\n      fs.mkdirSync(dir, { recursive: true });\n    }\n\n    // Write file\n    fs.writeFileSync(fullPath, content, \"utf-8\");\n  }\n\n  // Initialize git repository\n  if (!skipGit) {\n    try {\n      execSync(\"git init\", { cwd: projectDir, stdio: \"ignore\" });\n    } catch {\n      // Ignore git init errors (git may not be installed)\n    }\n  }\n\n  // Install dependencies\n  if (!skipInstall) {\n    try {\n      if (vercel) {\n        // Use npm for Vercel projects (better compatibility)\n        execSync(\"npm install\", { cwd: projectDir, stdio: \"inherit\" });\n      } else {\n        // Try pnpm first, fall back to npm\n        try {\n          execSync(\"pnpm install\", { cwd: projectDir, stdio: \"inherit\" });\n        } catch {\n          execSync(\"npm install\", { cwd: projectDir, stdio: \"inherit\" });\n        }\n      }\n    } catch {\n      // eslint-disable-next-line no-console\n      console.warn(\"Warning: Could not install dependencies automatically.\");\n    }\n  }\n}\n","/**\n * @mcp-apps-kit/create-app CLI\n *\n * Command-line interface for scaffolding MCP applications.\n */\n/* eslint-disable no-console */\n\nimport { Command, InvalidArgumentError } from \"commander\";\nimport prompts from \"prompts\";\nimport chalk from \"chalk\";\nimport { scaffoldProject } from \"./index.js\";\nimport type { CreateAppOptions } from \"./index.js\";\n\n// =============================================================================\n// Types\n// =============================================================================\n\nexport interface CLIOptions {\n  name?: string;\n  template: \"react\" | \"vanilla\";\n  directory?: string;\n  skipInstall: boolean;\n  skipGit: boolean;\n  vercel: boolean;\n  interactive: boolean;\n}\n\n// =============================================================================\n// Validation\n// =============================================================================\n\n/**\n * Validate a project name follows npm package naming conventions\n */\nexport function validateProjectName(name: string): boolean {\n  if (!name || name.length === 0) {\n    return false;\n  }\n\n  // Check for scoped packages\n  if (name.startsWith(\"@\")) {\n    const parts = name.split(\"/\");\n    if (parts.length !== 2 || !parts[0] || !parts[1]) return false;\n    const scope = parts[0].slice(1);\n    const pkg = parts[1];\n    return validateSimpleName(scope) && validateSimpleName(pkg);\n  }\n\n  return validateSimpleName(name);\n}\n\nfunction validateSimpleName(name: string): boolean {\n  // npm package name rules:\n  // - lowercase\n  // - one word (no spaces)\n  // - can contain hyphens, underscores, dots\n  // - cannot start with dot or underscore\n  const validPattern = /^[a-z][a-z0-9._-]*$/;\n  return validPattern.test(name);\n}\n\n// =============================================================================\n// Argument Parsing\n// =============================================================================\n\nconst VALID_TEMPLATES = [\"react\", \"vanilla\"] as const;\ntype Template = (typeof VALID_TEMPLATES)[number];\n\n/**\n * Parse CLI arguments\n */\nexport function parseArgs(args: string[]): CLIOptions {\n  let result: CLIOptions = {\n    template: \"react\",\n    skipInstall: false,\n    skipGit: false,\n    vercel: false,\n    interactive: false,\n  };\n\n  const program = new Command()\n    .name(\"create-mcp-apps-kit\")\n    .description(\"Scaffold a new MCP application\")\n    .version(\"0.1.0\")\n    .argument(\"[name]\", \"Project name\")\n    .option(\n      \"-t, --template <template>\",\n      \"Template to use (react, vanilla)\",\n      (value) => {\n        if (!VALID_TEMPLATES.includes(value as Template)) {\n          throw new InvalidArgumentError(\n            `Invalid template: ${value}. Must be one of: ${VALID_TEMPLATES.join(\", \")}`\n          );\n        }\n        return value as Template;\n      },\n      \"react\"\n    )\n    .option(\"-d, --directory <path>\", \"Directory to create project in\")\n    .option(\"--skip-install\", \"Skip installing dependencies\", false)\n    .option(\"--skip-git\", \"Skip initializing git repository\", false)\n    .option(\"--vercel\", \"Add Vercel deployment configuration\", false)\n    .allowUnknownOption(false)\n    .parse([\"node\", \"create-mcp-apps-kit\", ...args]);\n\n  const options = program.opts<{\n    template: Template;\n    directory?: string;\n    skipInstall: boolean;\n    skipGit: boolean;\n    vercel: boolean;\n  }>();\n  const [name] = program.args;\n\n  result = {\n    name,\n    template: options.template,\n    directory: options.directory,\n    skipInstall: options.skipInstall,\n    skipGit: options.skipGit,\n    vercel: options.vercel,\n    interactive: !name,\n  };\n\n  return result;\n}\n\n// =============================================================================\n// Interactive Mode\n// =============================================================================\n\nasync function runInteractive(): Promise<CreateAppOptions> {\n  console.log();\n  console.log(chalk.bold(\"🚀 Create a new MCP application\"));\n  console.log();\n\n  const response = await prompts<\"name\" | \"template\" | \"vercel\" | \"skipInstall\" | \"skipGit\">([\n    {\n      type: \"text\",\n      name: \"name\",\n      message: \"Project name:\",\n      validate: (value: string) => {\n        if (!validateProjectName(value)) {\n          return \"Invalid project name. 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Must be a valid npm package name.\"));\n        process.exit(1);\n      }\n\n      options = {\n        name: cliOptions.name,\n        template: cliOptions.template,\n        directory: cliOptions.directory,\n        skipInstall: cliOptions.skipInstall,\n        skipGit: cliOptions.skipGit,\n        vercel: cliOptions.vercel,\n      };\n    }\n\n    console.log();\n    console.log(chalk.blue(`Creating ${options.name} with ${options.template} template...`));\n    if (options.vercel) {\n      console.log(chalk.blue(\"Setting up for Vercel deployment...\"));\n    }\n    console.log();\n\n    await scaffoldProject(options);\n\n    const packageManager = options.vercel ? \"npm\" : \"pnpm\";\n\n    console.log();\n    console.log(chalk.green(\"✓ Project created successfully!\"));\n    console.log();\n    console.log(\"Next steps:\");\n    console.log(chalk.cyan(`  cd ${options.directory ?? options.name}`));\n    if (!options.skipInstall) {\n      console.log(chalk.cyan(`  ${packageManager} run dev`));\n    } else {\n      console.log(chalk.cyan(`  ${packageManager} install`));\n      console.log(chalk.cyan(`  ${packageManager} run dev`));\n    }\n    if (options.vercel) {\n      console.log();\n      console.log(\"To deploy to Vercel:\");\n      console.log(chalk.cyan(\"  vercel deploy\"));\n    }\n    console.log();\n  } catch (error) {\n    console.error(chalk.red(\"Error:\"), error instanceof Error ? error.message : error);\n    process.exit(1);\n  }\n}\n\n// Run if executed directly\nvoid main();\n"]}
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\"^18.2.0\",\n          \"react-dom\": \"^18.2.0\",\n          zod: \"^3.22.0\",\n          ...(vercel ? { express: \"^4.21.0\" } : {}),\n        },\n        devDependencies: {\n          \"@types/react\": \"^18.2.0\",\n          \"@types/react-dom\": \"^18.2.0\",\n          \"@vitejs/plugin-react\": \"^4.2.0\",\n          concurrently: \"^8.2.0\",\n          tsx: \"^4.7.0\",\n          typescript: \"^5.3.0\",\n          vite: \"^5.0.0\",\n          \"vite-plugin-singlefile\": \"^2.0.0\",\n        },\n      },\n      null,\n      2\n    ),\n    \"tsconfig.json\": JSON.stringify(\n      {\n        compilerOptions: {\n          target: \"ES2020\",\n          module: \"ESNext\",\n          moduleResolution: \"bundler\",\n          strict: true,\n          esModuleInterop: true,\n          skipLibCheck: true,\n          declaration: true,\n          outDir: \"dist\",\n          jsx: \"react-jsx\",\n        },\n        include: [\"server/**/*\", \"ui/src/**/*\"],\n        exclude: [\"node_modules\", \"dist\"],\n      },\n      null,\n      2\n    ),\n    \"server/index.ts\": vercel\n      ? `/**\n * ${name} - MCP Server\n */\n\n// Required for Vercel to detect Express\nimport \"express\";\n\nimport { createApp, defineTool, defineUI } from \"@mcp-apps-kit/core\";\nimport { z } from \"zod\";\n\n// Define the UI for displaying greetings\nconst greetingUI = defineUI({\n  name: \"Greeting Widget\",\n  description: \"Displays greeting messages\",\n  html: \"./${uiOutputDir}/index.html\",\n  prefersBorder: true,\n});\n\nconst app = createApp({\n  name: \"${name}\",\n  version: \"0.1.0\",\n\n  tools: {\n    hello: defineTool({\n      title: \"Hello\",\n      description: \"Say hello to someone\",\n      input: z.object({\n        name: z.string().describe(\"Name to greet\"),\n      }),\n      output: z.object({\n        message: z.string(),\n        timestamp: z.string(),\n      }),\n      handler: async ({ name }) => {\n        return {\n          message: \\`Hello, \\${name}!\\`,\n          timestamp: new Date().toISOString(),\n        };\n      },\n      ui: greetingUI,\n    }),\n  },\n});\n\n// Only start locally - Vercel uses the exported Express app\nif (!process.env.VERCEL) {\n  await app.start({ port: 3000 });\n  console.log(\"MCP server running on http://localhost:3000\");\n}\n\n// Export Express app for Vercel\nexport default app.expressApp;\n`\n      : `/**\n * ${name} - MCP Server\n */\n\nimport { createApp, defineTool, defineUI } from \"@mcp-apps-kit/core\";\nimport { z } from \"zod\";\n\n// Define the UI for displaying greetings\nconst greetingUI = defineUI({\n  name: \"Greeting Widget\",\n  description: \"Displays greeting messages\",\n  html: \"./ui/dist/index.html\",\n  prefersBorder: true,\n});\n\nconst app = createApp({\n  name: \"${name}\",\n  version: \"0.1.0\",\n\n  tools: {\n    hello: defineTool({\n      title: \"Hello\",\n      description: \"Say hello to someone\",\n      input: z.object({\n        name: z.string().describe(\"Name to greet\"),\n      }),\n      output: z.object({\n        message: z.string(),\n        timestamp: z.string(),\n      }),\n      handler: async ({ name }) => {\n        return {\n          message: \\`Hello, \\${name}!\\`,\n          timestamp: new Date().toISOString(),\n        };\n      },\n      ui: greetingUI,\n    }),\n  },\n});\n\n// Start server\nawait app.start({ port: 3000 });\nconsole.log(\"MCP server running on http://localhost:3000\");\n`,\n    \"ui/src/App.tsx\": `/**\n * ${name} - UI Component\n */\n\nimport {\n  useAppsClient,\n  useHostContext,\n  useDocumentTheme,\n  useHostStyleVariables,\n} from \"@mcp-apps-kit/ui-react\";\n\nexport function App() {\n  const client = useAppsClient();\n  const context = useHostContext();\n\n  // Apply theme and host styles\n  useDocumentTheme(\"light\", \"dark\");\n  useHostStyleVariables();\n\n  // Get tool output from client\n  const output = client.toolOutput as { message?: string; timestamp?: string } | undefined;\n\n  return (\n    <div className=\"container\">\n      {output?.message ? (\n        <div className=\"greeting\">\n          <h1>{output.message}</h1>\n          <p className=\"timestamp\">Sent at: {output.timestamp}</p>\n        </div>\n      ) : (\n        <p className=\"waiting\">Waiting for greeting...</p>\n      )}\n\n      <button\n        className=\"button\"\n        onClick={() => client.sendFollowUpMessage(\"Please greet me again!\")}\n      >\n        Request New Greeting\n      </button>\n\n      <footer className=\"meta\">\n        Theme: {context.theme} | Locale: {context.locale}\n      </footer>\n    </div>\n  );\n}\n`,\n    \"ui/src/main.tsx\": `/**\n * ${name} - UI Entry Point\n */\n\nimport React from \"react\";\nimport { createRoot } from \"react-dom/client\";\nimport { AppsProvider } from \"@mcp-apps-kit/ui-react\";\nimport { App } from \"./App\";\nimport \"./styles.css\";\n\nconst root = document.getElementById(\"root\");\nif (!root) throw new Error(\"Root element not found\");\n\ncreateRoot(root).render(\n  <React.StrictMode>\n    <AppsProvider>\n      <App />\n    </AppsProvider>\n  </React.StrictMode>\n);\n`,\n    \"ui/src/styles.css\": `* {\n  margin: 0;\n  padding: 0;\n  box-sizing: border-box;\n}\n\nbody {\n  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;\n  padding: 16px;\n}\n\n.container {\n  max-width: 400px;\n  margin: 0 auto;\n}\n\n.greeting h1 {\n  font-size: 1.5rem;\n  margin-bottom: 8px;\n}\n\n.timestamp {\n  color: #666;\n  font-size: 0.875rem;\n}\n\n.waiting {\n  color: #999;\n  font-style: italic;\n}\n\n.button {\n  margin-top: 16px;\n  padding: 8px 16px;\n  background: #0066cc;\n  color: white;\n  border: none;\n  border-radius: 4px;\n  cursor: pointer;\n}\n\n.button:hover {\n  background: #0052a3;\n}\n\n.meta {\n  margin-top: 24px;\n  padding-top: 16px;\n  border-top: 1px solid #eee;\n  font-size: 0.75rem;\n  color: #999;\n}\n\n/* Dark mode support */\n.dark body {\n  background: #1a1a1a;\n  color: #fff;\n}\n\n.dark .timestamp {\n  color: #aaa;\n}\n\n.dark .meta {\n  border-color: #333;\n  color: #666;\n}\n`,\n    \"ui/index.html\": `<!DOCTYPE html>\n<html lang=\"en\">\n  <head>\n    <meta charset=\"UTF-8\" />\n    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\" />\n    <title>${name}</title>\n  </head>\n  <body>\n    <div id=\"root\"></div>\n    <script type=\"module\" src=\"/src/main.tsx\"></script>\n  </body>\n</html>\n`,\n    \"ui/vite.config.ts\": `import { defineConfig } from \"vite\";\nimport react from \"@vitejs/plugin-react\";\nimport { viteSingleFile } from \"vite-plugin-singlefile\";\n\nexport default defineConfig({\n  plugins: [react(), viteSingleFile()],\n  root: \"./ui\",\n  build: {\n    outDir: \"${uiOutputDir}\",\n    emptyOutDir: true,\n  },\n});\n`,\n    \".gitignore\": `node_modules/\ndist/\npublic/\n*.log\n.env\n.env.local\n`,\n    \"README.md\": `# ${name}\n\nAn MCP application built with @mcp-apps-kit.\n\n## Development\n\n\\`\\`\\`bash\n${packageManager} install\n${packageManager} run dev\n\\`\\`\\`\n\n## Build\n\n\\`\\`\\`bash\n${packageManager} run build\n\\`\\`\\`\n\n## Connecting to Claude Desktop\n\nAdd to your Claude Desktop config:\n\n\\`\\`\\`json\n{\n  \"mcpServers\": {\n    \"${name}\": {\n      \"command\": \"npx\",\n      \"args\": [\"tsx\", \"path/to/${name}/server/index.ts\"]\n    }\n  }\n}\n\\`\\`\\`\n${\n  vercel\n    ? `\n## Deploy to Vercel\n\nThis project is configured for Vercel deployment:\n\n\\`\\`\\`bash\nvercel deploy\n\\`\\`\\`\n\nThen use the deployed URL as your MCP server endpoint.\n`\n    : \"\"\n}\n`,\n  };\n\n  // Add vercel.json if Vercel setup is enabled\n  if (vercel) {\n    files[\"vercel.json\"] = JSON.stringify(\n      {\n        installCommand: \"npm install\",\n        buildCommand: \"npm run build:ui\",\n        outputDirectory: \".\",\n        functions: {\n          \"server/index.ts\": {\n            includeFiles: `${uiOutputDir}/**`,\n          },\n        },\n        rewrites: [\n          {\n            source: \"/(.*)\",\n            destination: \"/server/index.ts\",\n          },\n        ],\n      },\n      null,\n      2\n    );\n  }\n\n  return files;\n}\n\nfunction getVanillaTemplate(name: string, vercel = false): Record<string, string> {\n  const uiOutputDir = vercel ? \"public\" : \"dist\";\n  const packageManager = vercel ? \"npm\" : \"pnpm\";\n  const versions = getPackageVersions();\n\n  const files: Record<string, string> = {\n    \"package.json\": JSON.stringify(\n      {\n        name,\n        version: \"0.1.0\",\n        type: \"module\",\n        scripts: {\n          dev: `concurrently \"${packageManager} run dev:server\" \"${packageManager} run dev:ui\"`,\n          \"dev:server\": \"tsx watch server/index.ts\",\n          \"dev:ui\": \"vite --config ui/vite.config.ts\",\n          build: `${packageManager} run build:ui && tsc`,\n          \"build:ui\": \"vite build --config ui/vite.config.ts\",\n          start: \"node dist/server/index.js\",\n        },\n        dependencies: {\n          \"@mcp-apps-kit/core\": versions.core,\n          \"@mcp-apps-kit/ui\": versions.ui,\n          zod: \"^3.22.0\",\n          ...(vercel ? { express: \"^4.21.0\" } : {}),\n        },\n        devDependencies: {\n          concurrently: \"^8.2.0\",\n          tsx: \"^4.7.0\",\n          typescript: \"^5.3.0\",\n          vite: \"^5.0.0\",\n          \"vite-plugin-singlefile\": \"^2.0.0\",\n        },\n      },\n      null,\n      2\n    ),\n    \"tsconfig.json\": JSON.stringify(\n      {\n        compilerOptions: {\n          target: \"ES2020\",\n          module: \"ESNext\",\n          moduleResolution: \"bundler\",\n          strict: true,\n          esModuleInterop: true,\n          skipLibCheck: true,\n          declaration: true,\n          outDir: \"dist\",\n        },\n        include: [\"server/**/*\", \"ui/src/**/*\"],\n        exclude: [\"node_modules\", \"dist\"],\n      },\n      null,\n      2\n    ),\n    \"server/index.ts\": vercel\n      ? `/**\n * ${name} - MCP Server\n */\n\n// Required for Vercel to detect Express\nimport \"express\";\n\nimport { createApp, defineTool, defineUI } from \"@mcp-apps-kit/core\";\nimport { z } from \"zod\";\n\n// Define the UI for displaying greetings\nconst greetingUI = defineUI({\n  name: \"Greeting Widget\",\n  description: \"Displays greeting messages\",\n  html: \"./${uiOutputDir}/index.html\",\n  prefersBorder: true,\n});\n\nconst app = createApp({\n  name: \"${name}\",\n  version: \"0.1.0\",\n\n  tools: {\n    hello: defineTool({\n      title: \"Hello\",\n      description: \"Say hello to someone\",\n      input: z.object({\n        name: z.string().describe(\"Name to greet\"),\n      }),\n      output: z.object({\n        message: z.string(),\n        timestamp: z.string(),\n      }),\n      handler: async ({ name }) => {\n        return {\n          message: \\`Hello, \\${name}!\\`,\n          timestamp: new Date().toISOString(),\n        };\n      },\n      ui: greetingUI,\n    }),\n  },\n});\n\n// Only start locally - Vercel uses the exported Express app\nif (!process.env.VERCEL) {\n  await app.start({ port: 3000 });\n  console.log(\"MCP server running on http://localhost:3000\");\n}\n\n// Export Express app for Vercel\nexport default app.expressApp;\n`\n      : `/**\n * ${name} - MCP Server\n */\n\nimport { createApp, defineTool, defineUI } from \"@mcp-apps-kit/core\";\nimport { z } from \"zod\";\n\n// Define the UI for displaying greetings\nconst greetingUI = defineUI({\n  name: \"Greeting Widget\",\n  description: \"Displays greeting messages\",\n  html: \"./ui/dist/index.html\",\n  prefersBorder: true,\n});\n\nconst app = createApp({\n  name: \"${name}\",\n  version: \"0.1.0\",\n\n  tools: {\n    hello: defineTool({\n      title: \"Hello\",\n      description: \"Say hello to someone\",\n      input: z.object({\n        name: z.string().describe(\"Name to greet\"),\n      }),\n      output: z.object({\n        message: z.string(),\n        timestamp: z.string(),\n      }),\n      handler: async ({ name }) => {\n        return {\n          message: \\`Hello, \\${name}!\\`,\n          timestamp: new Date().toISOString(),\n        };\n      },\n      ui: greetingUI,\n    }),\n  },\n});\n\n// Start server\nawait app.start({ port: 3000 });\nconsole.log(\"MCP server running on http://localhost:3000\");\n`,\n    \"ui/src/main.ts\": `/**\n * ${name} - UI Entry Point\n */\n\nimport { createClient } from \"@mcp-apps-kit/ui\";\nimport \"./styles.css\";\n\nasync function main() {\n  const client = await createClient();\n\n  // Get container\n  const container = document.getElementById(\"app\");\n  if (!container) throw new Error(\"Container not found\");\n\n  // Render initial UI\n  render(container, client);\n\n  // Subscribe to context changes\n  client.onHostContextChange((context) => {\n    document.documentElement.className = context.theme;\n    render(container, client);\n  });\n}\n\nfunction render(container: HTMLElement, client: ReturnType<typeof createClient> extends Promise<infer T> ? T : never) {\n  const output = client.toolOutput as { message?: string; timestamp?: string } | undefined;\n  const context = client.hostContext;\n\n  container.innerHTML = \\`\n    <div class=\"container\">\n      \\${output?.message ? \\`\n        <div class=\"greeting\">\n          <h1>\\${output.message}</h1>\n          <p class=\"timestamp\">Sent at: \\${output.timestamp}</p>\n        </div>\n      \\` : \\`\n        <p class=\"waiting\">Waiting for greeting...</p>\n      \\`}\n\n      <button class=\"button\" id=\"request-btn\">\n        Request New Greeting\n      </button>\n\n      <footer class=\"meta\">\n        Theme: \\${context.theme} | Locale: \\${context.locale}\n      </footer>\n    </div>\n  \\`;\n\n  // Add event listener\n  const btn = document.getElementById(\"request-btn\");\n  btn?.addEventListener(\"click\", () => {\n    client.sendFollowUpMessage(\"Please greet me again!\");\n  });\n}\n\nmain();\n`,\n    \"ui/src/styles.css\": `* {\n  margin: 0;\n  padding: 0;\n  box-sizing: border-box;\n}\n\nbody {\n  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;\n  padding: 16px;\n}\n\n.container {\n  max-width: 400px;\n  margin: 0 auto;\n}\n\n.greeting h1 {\n  font-size: 1.5rem;\n  margin-bottom: 8px;\n}\n\n.timestamp {\n  color: #666;\n  font-size: 0.875rem;\n}\n\n.waiting {\n  color: #999;\n  font-style: italic;\n}\n\n.button {\n  margin-top: 16px;\n  padding: 8px 16px;\n  background: #0066cc;\n  color: white;\n  border: none;\n  border-radius: 4px;\n  cursor: pointer;\n}\n\n.button:hover {\n  background: #0052a3;\n}\n\n.meta {\n  margin-top: 24px;\n  padding-top: 16px;\n  border-top: 1px solid #eee;\n  font-size: 0.75rem;\n  color: #999;\n}\n\n/* Dark mode support */\n.dark body {\n  background: #1a1a1a;\n  color: #fff;\n}\n\n.dark .timestamp {\n  color: #aaa;\n}\n\n.dark .meta {\n  border-color: #333;\n  color: #666;\n}\n`,\n    \"ui/index.html\": `<!DOCTYPE html>\n<html lang=\"en\">\n  <head>\n    <meta charset=\"UTF-8\" />\n    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\" />\n    <title>${name}</title>\n  </head>\n  <body>\n    <div id=\"app\"></div>\n    <script type=\"module\" src=\"/src/main.ts\"></script>\n  </body>\n</html>\n`,\n    \"ui/vite.config.ts\": `import { defineConfig } from \"vite\";\nimport { viteSingleFile } from \"vite-plugin-singlefile\";\n\nexport default defineConfig({\n  plugins: [viteSingleFile()],\n  root: \"./ui\",\n  build: {\n    outDir: \"${uiOutputDir}\",\n    emptyOutDir: true,\n  },\n});\n`,\n    \".gitignore\": `node_modules/\ndist/\npublic/\n*.log\n.env\n.env.local\n`,\n    \"README.md\": `# ${name}\n\nAn MCP application built with @mcp-apps-kit.\n\n## Development\n\n\\`\\`\\`bash\n${packageManager} install\n${packageManager} run dev\n\\`\\`\\`\n\n## Build\n\n\\`\\`\\`bash\n${packageManager} run build\n\\`\\`\\`\n\n## Connecting to Claude Desktop\n\nAdd to your Claude Desktop config:\n\n\\`\\`\\`json\n{\n  \"mcpServers\": {\n    \"${name}\": {\n      \"command\": \"npx\",\n      \"args\": [\"tsx\", \"path/to/${name}/server/index.ts\"]\n    }\n  }\n}\n\\`\\`\\`\n${\n  vercel\n    ? `\n## Deploy to Vercel\n\nThis project is configured for Vercel deployment:\n\n\\`\\`\\`bash\nvercel deploy\n\\`\\`\\`\n\nThen use the deployed URL as your MCP server endpoint.\n`\n    : \"\"\n}\n`,\n  };\n\n  // Add vercel.json if Vercel setup is enabled\n  if (vercel) {\n    files[\"vercel.json\"] = JSON.stringify(\n      {\n        installCommand: \"npm install\",\n        buildCommand: \"npm run build:ui\",\n        outputDirectory: \".\",\n        functions: {\n          \"server/index.ts\": {\n            includeFiles: `${uiOutputDir}/**`,\n          },\n        },\n        rewrites: [\n          {\n            source: \"/(.*)\",\n            destination: \"/server/index.ts\",\n          },\n        ],\n      },\n      null,\n      2\n    );\n  }\n\n  return files;\n}\n\n// =============================================================================\n// Scaffolding Logic\n// =============================================================================\n\n/**\n * Scaffold a new MCP application project\n */\nexport async function scaffoldProject(options: CreateAppOptions): Promise<void> {\n  const {\n    name,\n    template,\n    directory,\n    vercel = false,\n    skipInstall = false,\n    skipGit = false,\n  } = options;\n\n  // Determine project directory\n  const projectDir = directory ?? path.resolve(process.cwd(), name);\n\n  // Check if directory exists and is not empty\n  if (fs.existsSync(projectDir)) {\n    const files = fs.readdirSync(projectDir);\n    if (files.length > 0) {\n      throw new Error(`Directory ${projectDir} is not empty. Please use an empty directory.`);\n    }\n  } else {\n    fs.mkdirSync(projectDir, { recursive: true });\n  }\n\n  // Get template files\n  const templateFiles =\n    template === \"react\" ? getReactTemplate(name, vercel) : getVanillaTemplate(name, vercel);\n\n  // Write all files\n  for (const [filePath, content] of Object.entries(templateFiles)) {\n    const fullPath = path.join(projectDir, filePath);\n    const dir = path.dirname(fullPath);\n\n    // Create directory if needed\n    if (!fs.existsSync(dir)) {\n      fs.mkdirSync(dir, { recursive: true });\n    }\n\n    // Write file\n    fs.writeFileSync(fullPath, content, \"utf-8\");\n  }\n\n  // Initialize git repository\n  if (!skipGit) {\n    try {\n      execSync(\"git init\", { cwd: projectDir, stdio: \"ignore\" });\n    } catch {\n      // Ignore git init errors (git may not be installed)\n    }\n  }\n\n  // Install dependencies\n  if (!skipInstall) {\n    try {\n      if (vercel) {\n        // Use npm for Vercel projects (better compatibility)\n        execSync(\"npm install\", { cwd: projectDir, stdio: \"inherit\" });\n      } else {\n        // Try pnpm first, fall back to npm\n        try {\n          execSync(\"pnpm install\", { cwd: projectDir, stdio: \"inherit\" });\n        } catch {\n          execSync(\"npm install\", { cwd: projectDir, stdio: \"inherit\" });\n        }\n      }\n    } catch {\n      // eslint-disable-next-line no-console\n      console.warn(\"Warning: Could not install dependencies automatically.\");\n    }\n  }\n}\n","/**\n * @mcp-apps-kit/create-app CLI\n *\n * Command-line interface for scaffolding MCP applications.\n */\n/* eslint-disable no-console */\n\nimport { Command, InvalidArgumentError } from \"commander\";\nimport prompts from \"prompts\";\nimport chalk from \"chalk\";\nimport { scaffoldProject } from \"./index.js\";\nimport type { CreateAppOptions } from \"./index.js\";\n\n// =============================================================================\n// Types\n// =============================================================================\n\nexport interface CLIOptions {\n  name?: string;\n  template: \"react\" | \"vanilla\";\n  directory?: string;\n  skipInstall: boolean;\n  skipGit: boolean;\n  vercel: boolean;\n  interactive: boolean;\n}\n\n// =============================================================================\n// Validation\n// =============================================================================\n\n/**\n * Validate a project name follows npm package naming conventions\n */\nexport function validateProjectName(name: string): boolean {\n  if (!name || name.length === 0) {\n    return false;\n  }\n\n  // Check for scoped packages\n  if (name.startsWith(\"@\")) {\n    const parts = name.split(\"/\");\n    if (parts.length !== 2 || !parts[0] || !parts[1]) return false;\n    const scope = parts[0].slice(1);\n    const pkg = parts[1];\n    return validateSimpleName(scope) && validateSimpleName(pkg);\n  }\n\n  return validateSimpleName(name);\n}\n\nfunction validateSimpleName(name: string): boolean {\n  // npm package name rules:\n  // - lowercase\n  // - one word (no spaces)\n  // - can contain hyphens, underscores, dots\n  // - cannot start with dot or underscore\n  const validPattern = /^[a-z][a-z0-9._-]*$/;\n  return validPattern.test(name);\n}\n\n// =============================================================================\n// Argument Parsing\n// =============================================================================\n\nconst VALID_TEMPLATES = [\"react\", \"vanilla\"] as const;\ntype Template = (typeof VALID_TEMPLATES)[number];\n\n/**\n * Parse CLI arguments\n */\nexport function parseArgs(args: string[]): CLIOptions {\n  let result: CLIOptions = {\n    template: \"react\",\n    skipInstall: false,\n    skipGit: false,\n    vercel: false,\n    interactive: false,\n  };\n\n  const program = new Command()\n    .name(\"create-mcp-apps-kit\")\n    .description(\"Scaffold a new MCP application\")\n    .version(\"0.1.0\")\n    .argument(\"[name]\", \"Project name\")\n    .option(\n      \"-t, --template <template>\",\n      \"Template to use (react, vanilla)\",\n      (value) => {\n        if (!VALID_TEMPLATES.includes(value as Template)) {\n          throw new InvalidArgumentError(\n            `Invalid template: ${value}. Must be one of: ${VALID_TEMPLATES.join(\", \")}`\n          );\n        }\n        return value as Template;\n      },\n      \"react\"\n    )\n    .option(\"-d, --directory <path>\", \"Directory to create project in\")\n    .option(\"--skip-install\", \"Skip installing dependencies\", false)\n    .option(\"--skip-git\", \"Skip initializing git repository\", false)\n    .option(\"--vercel\", \"Add Vercel deployment configuration\", false)\n    .allowUnknownOption(false)\n    .parse([\"node\", \"create-mcp-apps-kit\", ...args]);\n\n  const options = program.opts<{\n    template: Template;\n    directory?: string;\n    skipInstall: boolean;\n    skipGit: boolean;\n    vercel: boolean;\n  }>();\n  const [name] = program.args;\n\n  result = {\n    name,\n    template: options.template,\n    directory: options.directory,\n    skipInstall: options.skipInstall,\n    skipGit: options.skipGit,\n    vercel: options.vercel,\n    interactive: !name,\n  };\n\n  return result;\n}\n\n// =============================================================================\n// Interactive Mode\n// =============================================================================\n\nasync function runInteractive(): Promise<CreateAppOptions> {\n  console.log();\n  console.log(chalk.bold(\"🚀 Create a new MCP application\"));\n  console.log();\n\n  const response = await prompts<\"name\" | \"template\" | \"vercel\" | \"skipInstall\" | \"skipGit\">([\n    {\n      type: \"text\",\n      name: \"name\",\n      message: \"Project name:\",\n      validate: (value: string) => {\n        if (!validateProjectName(value)) {\n          return \"Invalid project name. Must be lowercase, no spaces, valid npm package name.\";\n        }\n        return true;\n      },\n    },\n    {\n      type: \"select\",\n      name: \"template\",\n      message: \"Template:\",\n      choices: [\n        { title: \"React\", value: \"react\", description: \"React + TypeScript with hooks\" },\n        { title: \"Vanilla\", value: \"vanilla\", description: \"Vanilla TypeScript\" },\n      ],\n      initial: 0,\n    },\n    {\n      type: \"confirm\",\n      name: \"vercel\",\n      message: \"Add Vercel deployment setup?\",\n      initial: true,\n    },\n    {\n      type: \"confirm\",\n      name: \"skipInstall\",\n      message: \"Skip installing dependencies?\",\n      initial: false,\n    },\n    {\n      type: \"confirm\",\n      name: \"skipGit\",\n      message: \"Skip initializing git?\",\n      initial: false,\n    },\n  ]);\n\n  if (!response.name) {\n    console.log(chalk.yellow(\"Cancelled.\"));\n    process.exit(0);\n  }\n\n  return {\n    name: response.name as string,\n    template: response.template as \"react\" | \"vanilla\",\n    vercel: response.vercel as boolean,\n    skipInstall: response.skipInstall as boolean,\n    skipGit: response.skipGit as boolean,\n  };\n}\n\n// =============================================================================\n// Main Entry Point\n// =============================================================================\n\nasync function main(): Promise<void> {\n  try {\n    const cliOptions = parseArgs(process.argv.slice(2));\n\n    let options: CreateAppOptions;\n\n    if (cliOptions.interactive) {\n      options = await runInteractive();\n    } else {\n      if (!cliOptions.name) {\n        console.error(chalk.red(\"Error: Project name is required\"));\n        process.exit(1);\n      }\n\n      if (!validateProjectName(cliOptions.name)) {\n        console.error(chalk.red(\"Error: Invalid project name. Must be a valid npm package name.\"));\n        process.exit(1);\n      }\n\n      options = {\n        name: cliOptions.name,\n        template: cliOptions.template,\n        directory: cliOptions.directory,\n        skipInstall: cliOptions.skipInstall,\n        skipGit: cliOptions.skipGit,\n        vercel: cliOptions.vercel,\n      };\n    }\n\n    console.log();\n    console.log(chalk.blue(`Creating ${options.name} with ${options.template} template...`));\n    if (options.vercel) {\n      console.log(chalk.blue(\"Setting up for Vercel deployment...\"));\n    }\n    console.log();\n\n    await scaffoldProject(options);\n\n    const packageManager = options.vercel ? \"npm\" : \"pnpm\";\n\n    console.log();\n    console.log(chalk.green(\"✓ Project created successfully!\"));\n    console.log();\n    console.log(\"Next steps:\");\n    console.log(chalk.cyan(`  cd ${options.directory ?? options.name}`));\n    if (!options.skipInstall) {\n      console.log(chalk.cyan(`  ${packageManager} run dev`));\n    } else {\n      console.log(chalk.cyan(`  ${packageManager} install`));\n      console.log(chalk.cyan(`  ${packageManager} run dev`));\n    }\n    if (options.vercel) {\n      console.log();\n      console.log(\"To deploy to Vercel:\");\n      console.log(chalk.cyan(\"  vercel deploy\"));\n    }\n    console.log();\n  } catch (error) {\n    console.error(chalk.red(\"Error:\"), error instanceof Error ? error.message : error);\n    process.exit(1);\n  }\n}\n\n// Run if executed directly\nvoid main();\n"]}

dist/index.cjs

@@ -119,5 +119,13 @@ 'use strict';
 
-import { createApp } from "@mcp-apps-kit/core";
+import { createApp, defineTool, defineUI } from "@mcp-apps-kit/core";
 import { z } from "zod";
 
+// Define the UI for displaying greetings
+const greetingUI = defineUI({
+  name: "Greeting Widget",
+  description: "Displays greeting messages",
+  html: "./${uiOutputDir}/index.html",
+  prefersBorder: true,
+});
+
 const app = createApp({
@@ -128,3 +136,4 @@ name: "${name}",
   tools: {
-    hello: {
+    hello: defineTool({
+      title: "Hello",
       description: "Say hello to someone",
@@ -144,13 +153,5 @@ input: z.object({
       },
-      ui: "greeting",
-    },
+      ui: greetingUI,
+    }),
   },
-
-  ui: {
-    greeting: {
-      html: "./${uiOutputDir}/index.html",
-      description: "Greeting widget",
-      prefersBorder: true,
-    },
-  },
 });
@@ -170,5 +171,13 @@
 
-import { createApp } from "@mcp-apps-kit/core";
+import { createApp, defineTool, defineUI } from "@mcp-apps-kit/core";
 import { z } from "zod";
 
+// Define the UI for displaying greetings
+const greetingUI = defineUI({
+  name: "Greeting Widget",
+  description: "Displays greeting messages",
+  html: "./ui/dist/index.html",
+  prefersBorder: true,
+});
+
 const app = createApp({
@@ -179,3 +188,4 @@ name: "${name}",
   tools: {
-    hello: {
+    hello: defineTool({
+      title: "Hello",
       description: "Say hello to someone",
@@ -195,13 +205,5 @@ input: z.object({
       },
-      ui: "greeting",
-    },
+      ui: greetingUI,
+    }),
   },
-
-  ui: {
-    greeting: {
-      html: "./ui/dist/index.html",
-      description: "Greeting widget",
-      prefersBorder: true,
-    },
-  },
 });
@@ -510,5 +512,13 @@
 
-import { createApp } from "@mcp-apps-kit/core";
+import { createApp, defineTool, defineUI } from "@mcp-apps-kit/core";
 import { z } from "zod";
 
+// Define the UI for displaying greetings
+const greetingUI = defineUI({
+  name: "Greeting Widget",
+  description: "Displays greeting messages",
+  html: "./${uiOutputDir}/index.html",
+  prefersBorder: true,
+});
+
 const app = createApp({
@@ -519,3 +529,4 @@ name: "${name}",
   tools: {
-    hello: {
+    hello: defineTool({
+      title: "Hello",
       description: "Say hello to someone",
@@ -535,13 +546,5 @@ input: z.object({
       },
-      ui: "greeting",
-    },
+      ui: greetingUI,
+    }),
   },
-
-  ui: {
-    greeting: {
-      html: "./${uiOutputDir}/index.html",
-      description: "Greeting widget",
-      prefersBorder: true,
-    },
-  },
 });
@@ -561,5 +564,13 @@
 
-import { createApp } from "@mcp-apps-kit/core";
+import { createApp, defineTool, defineUI } from "@mcp-apps-kit/core";
 import { z } from "zod";
 
+// Define the UI for displaying greetings
+const greetingUI = defineUI({
+  name: "Greeting Widget",
+  description: "Displays greeting messages",
+  html: "./ui/dist/index.html",
+  prefersBorder: true,
+});
+
 const app = createApp({
@@ -570,3 +581,4 @@ name: "${name}",
   tools: {
-    hello: {
+    hello: defineTool({
+      title: "Hello",
       description: "Say hello to someone",
@@ -586,13 +598,5 @@ input: z.object({
       },
-      ui: "greeting",
-    },
+      ui: greetingUI,
+    }),
   },
-
-  ui: {
-    greeting: {
-      html: "./ui/dist/index.html",
-      description: "Greeting widget",
-      prefersBorder: true,
-    },
-  },
 });
@@ -599,0 +603,0 @@

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},\n});\n\n// Only start locally - Vercel uses the exported Express app\nif (!process.env.VERCEL) {\n  await app.start({ port: 3000 });\n  console.log(\"MCP server running on http://localhost:3000\");\n}\n\n// Export Express app for Vercel\nexport default app.expressApp;\n`\n      : `/**\n * ${name} - MCP Server\n */\n\nimport { createApp } from \"@mcp-apps-kit/core\";\nimport { z } from \"zod\";\n\nconst app = createApp({\n  name: \"${name}\",\n  version: \"0.1.0\",\n\n  tools: {\n    hello: {\n      description: \"Say hello to someone\",\n      input: z.object({\n        name: z.string().describe(\"Name to greet\"),\n      }),\n      output: z.object({\n        message: z.string(),\n        timestamp: z.string(),\n      }),\n      handler: async ({ name }) => {\n        return {\n          message: \\`Hello, \\${name}!\\`,\n          timestamp: new Date().toISOString(),\n        };\n      },\n      ui: \"greeting\",\n    },\n  },\n\n  ui: {\n    greeting: {\n      html: \"./ui/dist/index.html\",\n      description: \"Greeting widget\",\n      prefersBorder: true,\n    },\n  },\n});\n\n// Start server\nawait app.start({ port: 3000 });\nconsole.log(\"MCP server running on http://localhost:3000\");\n`,\n    \"ui/src/App.tsx\": `/**\n * ${name} - UI Component\n */\n\nimport {\n  useAppsClient,\n  useHostContext,\n  useDocumentTheme,\n  useHostStyleVariables,\n} from \"@mcp-apps-kit/ui-react\";\n\nexport function App() {\n  const client = useAppsClient();\n  const context = useHostContext();\n\n  // Apply theme and host styles\n  useDocumentTheme(\"light\", \"dark\");\n  useHostStyleVariables();\n\n  // Get tool output from client\n  const output = client.toolOutput as { message?: string; timestamp?: string } | undefined;\n\n  return (\n    <div className=\"container\">\n      {output?.message ? (\n        <div className=\"greeting\">\n          <h1>{output.message}</h1>\n          <p className=\"timestamp\">Sent at: {output.timestamp}</p>\n        </div>\n      ) : (\n        <p className=\"waiting\">Waiting for greeting...</p>\n      )}\n\n      <button\n        className=\"button\"\n        onClick={() => client.sendFollowUpMessage(\"Please greet me again!\")}\n      >\n        Request New Greeting\n      </button>\n\n      <footer className=\"meta\">\n        Theme: {context.theme} | Locale: {context.locale}\n      </footer>\n    </div>\n  );\n}\n`,\n    \"ui/src/main.tsx\": `/**\n * ${name} - UI Entry Point\n */\n\nimport React from \"react\";\nimport { createRoot } from \"react-dom/client\";\nimport { AppsProvider } from \"@mcp-apps-kit/ui-react\";\nimport { App } from \"./App\";\nimport \"./styles.css\";\n\nconst root = document.getElementById(\"root\");\nif (!root) throw new Error(\"Root element not found\");\n\ncreateRoot(root).render(\n  <React.StrictMode>\n    <AppsProvider>\n      <App />\n    </AppsProvider>\n  </React.StrictMode>\n);\n`,\n    \"ui/src/styles.css\": `* {\n  margin: 0;\n  padding: 0;\n  box-sizing: border-box;\n}\n\nbody {\n  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;\n  padding: 16px;\n}\n\n.container {\n  max-width: 400px;\n  margin: 0 auto;\n}\n\n.greeting h1 {\n  font-size: 1.5rem;\n  margin-bottom: 8px;\n}\n\n.timestamp {\n  color: #666;\n  font-size: 0.875rem;\n}\n\n.waiting {\n  color: #999;\n  font-style: italic;\n}\n\n.button {\n  margin-top: 16px;\n  padding: 8px 16px;\n  background: #0066cc;\n  color: white;\n  border: none;\n  border-radius: 4px;\n  cursor: pointer;\n}\n\n.button:hover {\n  background: #0052a3;\n}\n\n.meta {\n  margin-top: 24px;\n  padding-top: 16px;\n  border-top: 1px solid #eee;\n  font-size: 0.75rem;\n  color: #999;\n}\n\n/* Dark mode support */\n.dark body {\n  background: #1a1a1a;\n  color: #fff;\n}\n\n.dark .timestamp {\n  color: #aaa;\n}\n\n.dark .meta {\n  border-color: #333;\n  color: #666;\n}\n`,\n    \"ui/index.html\": `<!DOCTYPE html>\n<html lang=\"en\">\n  <head>\n    <meta charset=\"UTF-8\" />\n    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\" />\n    <title>${name}</title>\n  </head>\n  <body>\n    <div id=\"root\"></div>\n    <script type=\"module\" src=\"/src/main.tsx\"></script>\n  </body>\n</html>\n`,\n    \"ui/vite.config.ts\": `import { defineConfig } from \"vite\";\nimport react from \"@vitejs/plugin-react\";\nimport { viteSingleFile } from \"vite-plugin-singlefile\";\n\nexport default defineConfig({\n  plugins: [react(), viteSingleFile()],\n  root: \"./ui\",\n  build: {\n    outDir: \"${uiOutputDir}\",\n    emptyOutDir: true,\n  },\n});\n`,\n    \".gitignore\": `node_modules/\ndist/\npublic/\n*.log\n.env\n.env.local\n`,\n    \"README.md\": `# ${name}\n\nAn MCP application built with @mcp-apps-kit.\n\n## Development\n\n\\`\\`\\`bash\n${packageManager} install\n${packageManager} run dev\n\\`\\`\\`\n\n## Build\n\n\\`\\`\\`bash\n${packageManager} run build\n\\`\\`\\`\n\n## Connecting to Claude Desktop\n\nAdd to your Claude Desktop config:\n\n\\`\\`\\`json\n{\n  \"mcpServers\": {\n    \"${name}\": {\n      \"command\": \"npx\",\n      \"args\": [\"tsx\", \"path/to/${name}/server/index.ts\"]\n    }\n  }\n}\n\\`\\`\\`\n${\n  vercel\n    ? `\n## Deploy to Vercel\n\nThis project is configured for Vercel deployment:\n\n\\`\\`\\`bash\nvercel deploy\n\\`\\`\\`\n\nThen use the deployed URL as your MCP server endpoint.\n`\n    : \"\"\n}\n`,\n  };\n\n  // Add vercel.json if Vercel setup is enabled\n  if (vercel) {\n    files[\"vercel.json\"] = JSON.stringify(\n      {\n        installCommand: \"npm install\",\n        buildCommand: \"npm run build:ui\",\n        outputDirectory: \".\",\n        functions: {\n          \"server/index.ts\": {\n            includeFiles: `${uiOutputDir}/**`,\n          },\n        },\n        rewrites: [\n          {\n            source: \"/(.*)\",\n            destination: \"/server/index.ts\",\n          },\n        ],\n      },\n      null,\n      2\n    );\n  }\n\n  return files;\n}\n\nfunction getVanillaTemplate(name: string, vercel = false): Record<string, string> {\n  const uiOutputDir = vercel ? \"public\" : \"dist\";\n  const packageManager = vercel ? \"npm\" : \"pnpm\";\n  const versions = getPackageVersions();\n\n  const files: Record<string, string> = {\n    \"package.json\": JSON.stringify(\n      {\n        name,\n        version: \"0.1.0\",\n        type: \"module\",\n        scripts: {\n          dev: `concurrently \"${packageManager} run dev:server\" \"${packageManager} run dev:ui\"`,\n          \"dev:server\": \"tsx watch server/index.ts\",\n          \"dev:ui\": \"vite --config ui/vite.config.ts\",\n          build: `${packageManager} run build:ui && tsc`,\n          \"build:ui\": \"vite build --config ui/vite.config.ts\",\n          start: \"node dist/server/index.js\",\n        },\n        dependencies: {\n          \"@mcp-apps-kit/core\": versions.core,\n          \"@mcp-apps-kit/ui\": versions.ui,\n          zod: \"^3.22.0\",\n          ...(vercel ? { express: \"^4.21.0\" } : {}),\n        },\n        devDependencies: {\n          concurrently: \"^8.2.0\",\n          tsx: \"^4.7.0\",\n          typescript: \"^5.3.0\",\n          vite: \"^5.0.0\",\n          \"vite-plugin-singlefile\": \"^2.0.0\",\n        },\n      },\n      null,\n      2\n    ),\n    \"tsconfig.json\": JSON.stringify(\n      {\n        compilerOptions: {\n          target: \"ES2020\",\n          module: \"ESNext\",\n          moduleResolution: \"bundler\",\n          strict: true,\n          esModuleInterop: true,\n          skipLibCheck: true,\n          declaration: true,\n          outDir: \"dist\",\n        },\n        include: [\"server/**/*\", \"ui/src/**/*\"],\n        exclude: [\"node_modules\", \"dist\"],\n      },\n      null,\n      2\n    ),\n    \"server/index.ts\": vercel\n      ? `/**\n * ${name} - MCP Server\n */\n\n// Required for Vercel to detect Express\nimport \"express\";\n\nimport { createApp } from \"@mcp-apps-kit/core\";\nimport { z } from \"zod\";\n\nconst app = createApp({\n  name: \"${name}\",\n  version: \"0.1.0\",\n\n  tools: {\n    hello: {\n      description: \"Say hello to someone\",\n      input: z.object({\n        name: z.string().describe(\"Name to greet\"),\n      }),\n      output: z.object({\n        message: z.string(),\n        timestamp: z.string(),\n      }),\n      handler: async ({ name }) => {\n        return {\n          message: \\`Hello, \\${name}!\\`,\n          timestamp: new Date().toISOString(),\n        };\n      },\n      ui: \"greeting\",\n    },\n  },\n\n  ui: {\n    greeting: {\n      html: \"./${uiOutputDir}/index.html\",\n      description: \"Greeting widget\",\n      prefersBorder: true,\n    },\n  },\n});\n\n// Only start locally - Vercel uses the exported Express app\nif (!process.env.VERCEL) {\n  await app.start({ port: 3000 });\n  console.log(\"MCP server running on http://localhost:3000\");\n}\n\n// Export Express app for Vercel\nexport default app.expressApp;\n`\n      : `/**\n * ${name} - MCP Server\n */\n\nimport { createApp } from \"@mcp-apps-kit/core\";\nimport { z } from \"zod\";\n\nconst app = createApp({\n  name: \"${name}\",\n  version: \"0.1.0\",\n\n  tools: {\n    hello: {\n      description: \"Say hello to someone\",\n      input: z.object({\n        name: z.string().describe(\"Name to greet\"),\n      }),\n      output: z.object({\n        message: z.string(),\n        timestamp: z.string(),\n      }),\n      handler: async ({ name }) => {\n        return {\n          message: \\`Hello, \\${name}!\\`,\n          timestamp: new Date().toISOString(),\n        };\n      },\n      ui: \"greeting\",\n    },\n  },\n\n  ui: {\n    greeting: {\n      html: \"./ui/dist/index.html\",\n      description: \"Greeting widget\",\n      prefersBorder: true,\n    },\n  },\n});\n\n// Start server\nawait app.start({ port: 3000 });\nconsole.log(\"MCP server running on http://localhost:3000\");\n`,\n    \"ui/src/main.ts\": `/**\n * ${name} - UI Entry Point\n */\n\nimport { createClient } from \"@mcp-apps-kit/ui\";\nimport \"./styles.css\";\n\nasync function main() {\n  const client = await createClient();\n\n  // Get container\n  const container = document.getElementById(\"app\");\n  if (!container) throw new Error(\"Container not found\");\n\n  // Render initial UI\n  render(container, client);\n\n  // Subscribe to context changes\n  client.onHostContextChange((context) => {\n    document.documentElement.className = context.theme;\n    render(container, client);\n  });\n}\n\nfunction render(container: HTMLElement, client: ReturnType<typeof createClient> extends Promise<infer T> ? T : never) {\n  const output = client.toolOutput as { message?: string; timestamp?: string } | undefined;\n  const context = client.hostContext;\n\n  container.innerHTML = \\`\n    <div class=\"container\">\n      \\${output?.message ? \\`\n        <div class=\"greeting\">\n          <h1>\\${output.message}</h1>\n          <p class=\"timestamp\">Sent at: \\${output.timestamp}</p>\n        </div>\n      \\` : \\`\n        <p class=\"waiting\">Waiting for greeting...</p>\n      \\`}\n\n      <button class=\"button\" id=\"request-btn\">\n        Request New Greeting\n      </button>\n\n      <footer class=\"meta\">\n        Theme: \\${context.theme} | Locale: \\${context.locale}\n      </footer>\n    </div>\n  \\`;\n\n  // Add event listener\n  const btn = document.getElementById(\"request-btn\");\n  btn?.addEventListener(\"click\", () => {\n    client.sendFollowUpMessage(\"Please greet me again!\");\n  });\n}\n\nmain();\n`,\n    \"ui/src/styles.css\": `* {\n  margin: 0;\n  padding: 0;\n  box-sizing: border-box;\n}\n\nbody {\n  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;\n  padding: 16px;\n}\n\n.container {\n  max-width: 400px;\n  margin: 0 auto;\n}\n\n.greeting h1 {\n  font-size: 1.5rem;\n  margin-bottom: 8px;\n}\n\n.timestamp {\n  color: #666;\n  font-size: 0.875rem;\n}\n\n.waiting {\n  color: #999;\n  font-style: italic;\n}\n\n.button {\n  margin-top: 16px;\n  padding: 8px 16px;\n  background: #0066cc;\n  color: white;\n  border: none;\n  border-radius: 4px;\n  cursor: pointer;\n}\n\n.button:hover {\n  background: #0052a3;\n}\n\n.meta {\n  margin-top: 24px;\n  padding-top: 16px;\n  border-top: 1px solid #eee;\n  font-size: 0.75rem;\n  color: #999;\n}\n\n/* Dark mode support */\n.dark body {\n  background: #1a1a1a;\n  color: #fff;\n}\n\n.dark .timestamp {\n  color: #aaa;\n}\n\n.dark .meta {\n  border-color: #333;\n  color: #666;\n}\n`,\n    \"ui/index.html\": `<!DOCTYPE html>\n<html lang=\"en\">\n  <head>\n    <meta charset=\"UTF-8\" />\n    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\" />\n    <title>${name}</title>\n  </head>\n  <body>\n    <div id=\"app\"></div>\n    <script type=\"module\" src=\"/src/main.ts\"></script>\n  </body>\n</html>\n`,\n    \"ui/vite.config.ts\": `import { defineConfig } from \"vite\";\nimport { viteSingleFile } from \"vite-plugin-singlefile\";\n\nexport default defineConfig({\n  plugins: [viteSingleFile()],\n  root: \"./ui\",\n  build: {\n    outDir: \"${uiOutputDir}\",\n    emptyOutDir: true,\n  },\n});\n`,\n    \".gitignore\": `node_modules/\ndist/\npublic/\n*.log\n.env\n.env.local\n`,\n    \"README.md\": `# ${name}\n\nAn MCP application built with @mcp-apps-kit.\n\n## Development\n\n\\`\\`\\`bash\n${packageManager} install\n${packageManager} run dev\n\\`\\`\\`\n\n## Build\n\n\\`\\`\\`bash\n${packageManager} run build\n\\`\\`\\`\n\n## Connecting to Claude Desktop\n\nAdd to your Claude Desktop config:\n\n\\`\\`\\`json\n{\n  \"mcpServers\": {\n    \"${name}\": {\n      \"command\": \"npx\",\n      \"args\": [\"tsx\", \"path/to/${name}/server/index.ts\"]\n    }\n  }\n}\n\\`\\`\\`\n${\n  vercel\n    ? `\n## Deploy to Vercel\n\nThis project is configured for Vercel deployment:\n\n\\`\\`\\`bash\nvercel deploy\n\\`\\`\\`\n\nThen use the deployed URL as your MCP server endpoint.\n`\n    : \"\"\n}\n`,\n  };\n\n  // Add vercel.json if Vercel setup is enabled\n  if (vercel) {\n    files[\"vercel.json\"] = JSON.stringify(\n      {\n        installCommand: \"npm install\",\n        buildCommand: \"npm run build:ui\",\n        outputDirectory: \".\",\n        functions: {\n          \"server/index.ts\": {\n            includeFiles: `${uiOutputDir}/**`,\n          },\n        },\n        rewrites: [\n          {\n            source: \"/(.*)\",\n            destination: \"/server/index.ts\",\n          },\n        ],\n      },\n      null,\n      2\n    );\n  }\n\n  return files;\n}\n\n// =============================================================================\n// Scaffolding Logic\n// =============================================================================\n\n/**\n * Scaffold a new MCP application project\n */\nexport async function scaffoldProject(options: CreateAppOptions): Promise<void> {\n  const {\n    name,\n    template,\n    directory,\n    vercel = false,\n    skipInstall = false,\n    skipGit = false,\n  } = options;\n\n  // Determine project directory\n  const projectDir = directory ?? path.resolve(process.cwd(), name);\n\n  // Check if directory exists and is not empty\n  if (fs.existsSync(projectDir)) {\n    const files = fs.readdirSync(projectDir);\n    if (files.length > 0) {\n      throw new Error(`Directory ${projectDir} is not empty. Please use an empty directory.`);\n    }\n  } else {\n    fs.mkdirSync(projectDir, { recursive: true });\n  }\n\n  // Get template files\n  const templateFiles =\n    template === \"react\" ? getReactTemplate(name, vercel) : getVanillaTemplate(name, vercel);\n\n  // Write all files\n  for (const [filePath, content] of Object.entries(templateFiles)) {\n    const fullPath = path.join(projectDir, filePath);\n    const dir = path.dirname(fullPath);\n\n    // Create directory if needed\n    if (!fs.existsSync(dir)) {\n      fs.mkdirSync(dir, { recursive: true });\n    }\n\n    // Write file\n    fs.writeFileSync(fullPath, content, \"utf-8\");\n  }\n\n  // Initialize git repository\n  if (!skipGit) {\n    try {\n      execSync(\"git init\", { cwd: projectDir, stdio: \"ignore\" });\n    } catch {\n      // Ignore git init errors (git may not be installed)\n    }\n  }\n\n  // Install dependencies\n  if (!skipInstall) {\n    try {\n      if (vercel) {\n        // Use npm for Vercel projects (better compatibility)\n        execSync(\"npm install\", { cwd: projectDir, stdio: \"inherit\" });\n      } else {\n        // Try pnpm first, fall back to npm\n        try {\n          execSync(\"pnpm install\", { cwd: projectDir, stdio: \"inherit\" });\n        } catch {\n          execSync(\"npm install\", { cwd: projectDir, stdio: \"inherit\" });\n        }\n      }\n    } catch {\n      // eslint-disable-next-line no-console\n      console.warn(\"Warning: Could not install dependencies automatically.\");\n    }\n  }\n}\n"]}
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*/\nfunction fetchLatestVersion(packageName: string): string {\n  try {\n    const result = execSync(`npm view ${packageName} version`, {\n      encoding: \"utf-8\",\n      stdio: [\"pipe\", \"pipe\", \"pipe\"],\n    }).trim();\n    return `^${result}`;\n  } catch {\n    // Fallback to a reasonable default if we can't fetch\n    return \"^0.2.0\";\n  }\n}\n\n/**\n * Get the versions of @mcp-apps-kit packages from npm registry\n */\nfunction getPackageVersions(): PackageVersions {\n  if (cachedVersions) {\n    return cachedVersions;\n  }\n\n  cachedVersions = {\n    core: fetchLatestVersion(\"@mcp-apps-kit/core\"),\n    ui: fetchLatestVersion(\"@mcp-apps-kit/ui\"),\n    uiReact: fetchLatestVersion(\"@mcp-apps-kit/ui-react\"),\n  };\n\n  return cachedVersions;\n}\n\n// =============================================================================\n// Template Content\n// =============================================================================\n\nfunction getReactTemplate(name: string, vercel = false): Record<string, string> {\n  const uiOutputDir = vercel ? \"public\" : \"dist\";\n  const packageManager = vercel ? \"npm\" : \"pnpm\";\n  const versions = getPackageVersions();\n\n  const files: Record<string, string> = {\n    \"package.json\": JSON.stringify(\n      {\n        name,\n        version: \"0.1.0\",\n        type: \"module\",\n        scripts: {\n          dev: `concurrently \"${packageManager} run dev:server\" \"${packageManager} run dev:ui\"`,\n          \"dev:server\": \"tsx watch server/index.ts\",\n          \"dev:ui\": \"vite --config ui/vite.config.ts\",\n          build: `${packageManager} run build:ui && tsc`,\n          \"build:ui\": \"vite build --config ui/vite.config.ts\",\n          start: \"node dist/server/index.js\",\n        },\n        dependencies: {\n          \"@mcp-apps-kit/core\": versions.core,\n          \"@mcp-apps-kit/ui\": versions.ui,\n          \"@mcp-apps-kit/ui-react\": versions.uiReact,\n          react: \"^18.2.0\",\n          \"react-dom\": \"^18.2.0\",\n          zod: \"^3.22.0\",\n          ...(vercel ? { express: \"^4.21.0\" } : {}),\n        },\n        devDependencies: {\n          \"@types/react\": \"^18.2.0\",\n          \"@types/react-dom\": \"^18.2.0\",\n          \"@vitejs/plugin-react\": \"^4.2.0\",\n          concurrently: \"^8.2.0\",\n          tsx: \"^4.7.0\",\n          typescript: \"^5.3.0\",\n          vite: \"^5.0.0\",\n          \"vite-plugin-singlefile\": \"^2.0.0\",\n        },\n      },\n      null,\n      2\n    ),\n    \"tsconfig.json\": JSON.stringify(\n      {\n        compilerOptions: {\n          target: \"ES2020\",\n          module: \"ESNext\",\n          moduleResolution: \"bundler\",\n          strict: true,\n          esModuleInterop: true,\n          skipLibCheck: true,\n          declaration: true,\n          outDir: \"dist\",\n          jsx: \"react-jsx\",\n        },\n        include: [\"server/**/*\", \"ui/src/**/*\"],\n        exclude: [\"node_modules\", \"dist\"],\n      },\n      null,\n      2\n    ),\n    \"server/index.ts\": vercel\n      ? `/**\n * ${name} - MCP Server\n */\n\n// Required for Vercel to detect Express\nimport \"express\";\n\nimport { createApp, defineTool, defineUI } from \"@mcp-apps-kit/core\";\nimport { z } from \"zod\";\n\n// Define the UI for displaying greetings\nconst greetingUI = defineUI({\n  name: \"Greeting Widget\",\n  description: \"Displays greeting messages\",\n  html: \"./${uiOutputDir}/index.html\",\n  prefersBorder: true,\n});\n\nconst app = createApp({\n  name: \"${name}\",\n  version: \"0.1.0\",\n\n  tools: {\n    hello: defineTool({\n      title: \"Hello\",\n      description: \"Say hello to someone\",\n      input: z.object({\n        name: z.string().describe(\"Name to greet\"),\n      }),\n      output: z.object({\n        message: z.string(),\n        timestamp: z.string(),\n      }),\n      handler: async ({ name }) => {\n        return {\n          message: \\`Hello, \\${name}!\\`,\n          timestamp: new Date().toISOString(),\n        };\n      },\n      ui: greetingUI,\n    }),\n  },\n});\n\n// Only start locally - Vercel uses the exported Express app\nif (!process.env.VERCEL) {\n  await app.start({ port: 3000 });\n  console.log(\"MCP server running on http://localhost:3000\");\n}\n\n// Export Express app for Vercel\nexport default app.expressApp;\n`\n      : `/**\n * ${name} - MCP Server\n */\n\nimport { createApp, defineTool, defineUI } from \"@mcp-apps-kit/core\";\nimport { z } from \"zod\";\n\n// Define the UI for displaying greetings\nconst greetingUI = defineUI({\n  name: \"Greeting Widget\",\n  description: \"Displays greeting messages\",\n  html: \"./ui/dist/index.html\",\n  prefersBorder: true,\n});\n\nconst app = createApp({\n  name: \"${name}\",\n  version: \"0.1.0\",\n\n  tools: {\n    hello: defineTool({\n      title: \"Hello\",\n      description: \"Say hello to someone\",\n      input: z.object({\n        name: z.string().describe(\"Name to greet\"),\n      }),\n      output: z.object({\n        message: z.string(),\n        timestamp: z.string(),\n      }),\n      handler: async ({ name }) => {\n        return {\n          message: \\`Hello, \\${name}!\\`,\n          timestamp: new Date().toISOString(),\n        };\n      },\n      ui: greetingUI,\n    }),\n  },\n});\n\n// Start server\nawait app.start({ port: 3000 });\nconsole.log(\"MCP server running on http://localhost:3000\");\n`,\n    \"ui/src/App.tsx\": `/**\n * ${name} - UI Component\n */\n\nimport {\n  useAppsClient,\n  useHostContext,\n  useDocumentTheme,\n  useHostStyleVariables,\n} from \"@mcp-apps-kit/ui-react\";\n\nexport function App() {\n  const client = useAppsClient();\n  const context = useHostContext();\n\n  // Apply theme and host styles\n  useDocumentTheme(\"light\", \"dark\");\n  useHostStyleVariables();\n\n  // Get tool output from client\n  const output = client.toolOutput as { message?: string; timestamp?: string } | undefined;\n\n  return (\n    <div className=\"container\">\n      {output?.message ? (\n        <div className=\"greeting\">\n          <h1>{output.message}</h1>\n          <p className=\"timestamp\">Sent at: {output.timestamp}</p>\n        </div>\n      ) : (\n        <p className=\"waiting\">Waiting for greeting...</p>\n      )}\n\n      <button\n        className=\"button\"\n        onClick={() => client.sendFollowUpMessage(\"Please greet me again!\")}\n      >\n        Request New Greeting\n      </button>\n\n      <footer className=\"meta\">\n        Theme: {context.theme} | Locale: {context.locale}\n      </footer>\n    </div>\n  );\n}\n`,\n    \"ui/src/main.tsx\": `/**\n * ${name} - UI Entry Point\n */\n\nimport React from \"react\";\nimport { createRoot } from \"react-dom/client\";\nimport { AppsProvider } from \"@mcp-apps-kit/ui-react\";\nimport { App } from \"./App\";\nimport \"./styles.css\";\n\nconst root = document.getElementById(\"root\");\nif (!root) throw new Error(\"Root element not found\");\n\ncreateRoot(root).render(\n  <React.StrictMode>\n    <AppsProvider>\n      <App />\n    </AppsProvider>\n  </React.StrictMode>\n);\n`,\n    \"ui/src/styles.css\": `* {\n  margin: 0;\n  padding: 0;\n  box-sizing: border-box;\n}\n\nbody {\n  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;\n  padding: 16px;\n}\n\n.container {\n  max-width: 400px;\n  margin: 0 auto;\n}\n\n.greeting h1 {\n  font-size: 1.5rem;\n  margin-bottom: 8px;\n}\n\n.timestamp {\n  color: #666;\n  font-size: 0.875rem;\n}\n\n.waiting {\n  color: #999;\n  font-style: italic;\n}\n\n.button {\n  margin-top: 16px;\n  padding: 8px 16px;\n  background: #0066cc;\n  color: white;\n  border: none;\n  border-radius: 4px;\n  cursor: pointer;\n}\n\n.button:hover {\n  background: #0052a3;\n}\n\n.meta {\n  margin-top: 24px;\n  padding-top: 16px;\n  border-top: 1px solid #eee;\n  font-size: 0.75rem;\n  color: #999;\n}\n\n/* Dark mode support */\n.dark body {\n  background: #1a1a1a;\n  color: #fff;\n}\n\n.dark .timestamp {\n  color: #aaa;\n}\n\n.dark .meta {\n  border-color: #333;\n  color: #666;\n}\n`,\n    \"ui/index.html\": `<!DOCTYPE html>\n<html lang=\"en\">\n  <head>\n    <meta charset=\"UTF-8\" />\n    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\" />\n    <title>${name}</title>\n  </head>\n  <body>\n    <div id=\"root\"></div>\n    <script type=\"module\" src=\"/src/main.tsx\"></script>\n  </body>\n</html>\n`,\n    \"ui/vite.config.ts\": `import { defineConfig } from \"vite\";\nimport react from \"@vitejs/plugin-react\";\nimport { viteSingleFile } from \"vite-plugin-singlefile\";\n\nexport default defineConfig({\n  plugins: [react(), viteSingleFile()],\n  root: \"./ui\",\n  build: {\n    outDir: \"${uiOutputDir}\",\n    emptyOutDir: true,\n  },\n});\n`,\n    \".gitignore\": `node_modules/\ndist/\npublic/\n*.log\n.env\n.env.local\n`,\n    \"README.md\": `# ${name}\n\nAn MCP application built with @mcp-apps-kit.\n\n## Development\n\n\\`\\`\\`bash\n${packageManager} install\n${packageManager} run dev\n\\`\\`\\`\n\n## Build\n\n\\`\\`\\`bash\n${packageManager} run build\n\\`\\`\\`\n\n## Connecting to Claude Desktop\n\nAdd to your Claude Desktop config:\n\n\\`\\`\\`json\n{\n  \"mcpServers\": {\n    \"${name}\": {\n      \"command\": \"npx\",\n      \"args\": [\"tsx\", \"path/to/${name}/server/index.ts\"]\n    }\n  }\n}\n\\`\\`\\`\n${\n  vercel\n    ? `\n## Deploy to Vercel\n\nThis project is configured for Vercel deployment:\n\n\\`\\`\\`bash\nvercel deploy\n\\`\\`\\`\n\nThen use the deployed URL as your MCP server endpoint.\n`\n    : \"\"\n}\n`,\n  };\n\n  // Add vercel.json if Vercel setup is enabled\n  if (vercel) {\n    files[\"vercel.json\"] = JSON.stringify(\n      {\n        installCommand: \"npm install\",\n        buildCommand: \"npm run build:ui\",\n        outputDirectory: \".\",\n        functions: {\n          \"server/index.ts\": {\n            includeFiles: `${uiOutputDir}/**`,\n          },\n        },\n        rewrites: [\n          {\n            source: \"/(.*)\",\n            destination: \"/server/index.ts\",\n          },\n        ],\n      },\n      null,\n      2\n    );\n  }\n\n  return files;\n}\n\nfunction getVanillaTemplate(name: string, vercel = false): Record<string, string> {\n  const uiOutputDir = vercel ? \"public\" : \"dist\";\n  const packageManager = vercel ? \"npm\" : \"pnpm\";\n  const versions = getPackageVersions();\n\n  const files: Record<string, string> = {\n    \"package.json\": JSON.stringify(\n      {\n        name,\n        version: \"0.1.0\",\n        type: \"module\",\n        scripts: {\n          dev: `concurrently \"${packageManager} run dev:server\" \"${packageManager} run dev:ui\"`,\n          \"dev:server\": \"tsx watch server/index.ts\",\n          \"dev:ui\": \"vite --config ui/vite.config.ts\",\n          build: `${packageManager} run build:ui && tsc`,\n          \"build:ui\": \"vite build --config ui/vite.config.ts\",\n          start: \"node dist/server/index.js\",\n        },\n        dependencies: {\n          \"@mcp-apps-kit/core\": versions.core,\n          \"@mcp-apps-kit/ui\": versions.ui,\n          zod: \"^3.22.0\",\n          ...(vercel ? { express: \"^4.21.0\" } : {}),\n        },\n        devDependencies: {\n          concurrently: \"^8.2.0\",\n          tsx: \"^4.7.0\",\n          typescript: \"^5.3.0\",\n          vite: \"^5.0.0\",\n          \"vite-plugin-singlefile\": \"^2.0.0\",\n        },\n      },\n      null,\n      2\n    ),\n    \"tsconfig.json\": JSON.stringify(\n      {\n        compilerOptions: {\n          target: \"ES2020\",\n          module: \"ESNext\",\n          moduleResolution: \"bundler\",\n          strict: true,\n          esModuleInterop: true,\n          skipLibCheck: true,\n          declaration: true,\n          outDir: \"dist\",\n        },\n        include: [\"server/**/*\", \"ui/src/**/*\"],\n        exclude: [\"node_modules\", \"dist\"],\n      },\n      null,\n      2\n    ),\n    \"server/index.ts\": vercel\n      ? `/**\n * ${name} - MCP Server\n */\n\n// Required for Vercel to detect Express\nimport \"express\";\n\nimport { createApp, defineTool, defineUI } from \"@mcp-apps-kit/core\";\nimport { z } from \"zod\";\n\n// Define the UI for displaying greetings\nconst greetingUI = defineUI({\n  name: \"Greeting Widget\",\n  description: \"Displays greeting messages\",\n  html: \"./${uiOutputDir}/index.html\",\n  prefersBorder: true,\n});\n\nconst app = createApp({\n  name: \"${name}\",\n  version: \"0.1.0\",\n\n  tools: {\n    hello: defineTool({\n      title: \"Hello\",\n      description: \"Say hello to someone\",\n      input: z.object({\n        name: z.string().describe(\"Name to greet\"),\n      }),\n      output: z.object({\n        message: z.string(),\n        timestamp: z.string(),\n      }),\n      handler: async ({ name }) => {\n        return {\n          message: \\`Hello, \\${name}!\\`,\n          timestamp: new Date().toISOString(),\n        };\n      },\n      ui: greetingUI,\n    }),\n  },\n});\n\n// Only start locally - Vercel uses the exported Express app\nif (!process.env.VERCEL) {\n  await app.start({ port: 3000 });\n  console.log(\"MCP server running on http://localhost:3000\");\n}\n\n// Export Express app for Vercel\nexport default app.expressApp;\n`\n      : `/**\n * ${name} - MCP Server\n */\n\nimport { createApp, defineTool, defineUI } from \"@mcp-apps-kit/core\";\nimport { z } from \"zod\";\n\n// Define the UI for displaying greetings\nconst greetingUI = defineUI({\n  name: \"Greeting Widget\",\n  description: \"Displays greeting messages\",\n  html: \"./ui/dist/index.html\",\n  prefersBorder: true,\n});\n\nconst app = createApp({\n  name: \"${name}\",\n  version: \"0.1.0\",\n\n  tools: {\n    hello: defineTool({\n      title: \"Hello\",\n      description: \"Say hello to someone\",\n      input: z.object({\n        name: z.string().describe(\"Name to greet\"),\n      }),\n      output: z.object({\n        message: z.string(),\n        timestamp: z.string(),\n      }),\n      handler: async ({ name }) => {\n        return {\n          message: \\`Hello, \\${name}!\\`,\n          timestamp: new Date().toISOString(),\n        };\n      },\n      ui: greetingUI,\n    }),\n  },\n});\n\n// Start server\nawait app.start({ port: 3000 });\nconsole.log(\"MCP server running on http://localhost:3000\");\n`,\n    \"ui/src/main.ts\": `/**\n * ${name} - UI Entry Point\n */\n\nimport { createClient } from \"@mcp-apps-kit/ui\";\nimport \"./styles.css\";\n\nasync function main() {\n  const client = await createClient();\n\n  // Get container\n  const container = document.getElementById(\"app\");\n  if (!container) throw new Error(\"Container not found\");\n\n  // Render initial UI\n  render(container, client);\n\n  // Subscribe to context changes\n  client.onHostContextChange((context) => {\n    document.documentElement.className = context.theme;\n    render(container, client);\n  });\n}\n\nfunction render(container: HTMLElement, client: ReturnType<typeof createClient> extends Promise<infer T> ? T : never) {\n  const output = client.toolOutput as { message?: string; timestamp?: string } | undefined;\n  const context = client.hostContext;\n\n  container.innerHTML = \\`\n    <div class=\"container\">\n      \\${output?.message ? \\`\n        <div class=\"greeting\">\n          <h1>\\${output.message}</h1>\n          <p class=\"timestamp\">Sent at: \\${output.timestamp}</p>\n        </div>\n      \\` : \\`\n        <p class=\"waiting\">Waiting for greeting...</p>\n      \\`}\n\n      <button class=\"button\" id=\"request-btn\">\n        Request New Greeting\n      </button>\n\n      <footer class=\"meta\">\n        Theme: \\${context.theme} | Locale: \\${context.locale}\n      </footer>\n    </div>\n  \\`;\n\n  // Add event listener\n  const btn = document.getElementById(\"request-btn\");\n  btn?.addEventListener(\"click\", () => {\n    client.sendFollowUpMessage(\"Please greet me again!\");\n  });\n}\n\nmain();\n`,\n    \"ui/src/styles.css\": `* {\n  margin: 0;\n  padding: 0;\n  box-sizing: border-box;\n}\n\nbody {\n  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;\n  padding: 16px;\n}\n\n.container {\n  max-width: 400px;\n  margin: 0 auto;\n}\n\n.greeting h1 {\n  font-size: 1.5rem;\n  margin-bottom: 8px;\n}\n\n.timestamp {\n  color: #666;\n  font-size: 0.875rem;\n}\n\n.waiting {\n  color: #999;\n  font-style: italic;\n}\n\n.button {\n  margin-top: 16px;\n  padding: 8px 16px;\n  background: #0066cc;\n  color: white;\n  border: none;\n  border-radius: 4px;\n  cursor: pointer;\n}\n\n.button:hover {\n  background: #0052a3;\n}\n\n.meta {\n  margin-top: 24px;\n  padding-top: 16px;\n  border-top: 1px solid #eee;\n  font-size: 0.75rem;\n  color: #999;\n}\n\n/* Dark mode support */\n.dark body {\n  background: #1a1a1a;\n  color: #fff;\n}\n\n.dark .timestamp {\n  color: #aaa;\n}\n\n.dark .meta {\n  border-color: #333;\n  color: #666;\n}\n`,\n    \"ui/index.html\": `<!DOCTYPE html>\n<html lang=\"en\">\n  <head>\n    <meta charset=\"UTF-8\" />\n    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\" />\n    <title>${name}</title>\n  </head>\n  <body>\n    <div id=\"app\"></div>\n    <script type=\"module\" src=\"/src/main.ts\"></script>\n  </body>\n</html>\n`,\n    \"ui/vite.config.ts\": `import { defineConfig } from \"vite\";\nimport { viteSingleFile } from \"vite-plugin-singlefile\";\n\nexport default defineConfig({\n  plugins: [viteSingleFile()],\n  root: \"./ui\",\n  build: {\n    outDir: \"${uiOutputDir}\",\n    emptyOutDir: true,\n  },\n});\n`,\n    \".gitignore\": `node_modules/\ndist/\npublic/\n*.log\n.env\n.env.local\n`,\n    \"README.md\": `# ${name}\n\nAn MCP application built with @mcp-apps-kit.\n\n## Development\n\n\\`\\`\\`bash\n${packageManager} install\n${packageManager} run dev\n\\`\\`\\`\n\n## Build\n\n\\`\\`\\`bash\n${packageManager} run build\n\\`\\`\\`\n\n## Connecting to Claude Desktop\n\nAdd to your Claude Desktop config:\n\n\\`\\`\\`json\n{\n  \"mcpServers\": {\n    \"${name}\": {\n      \"command\": \"npx\",\n      \"args\": [\"tsx\", \"path/to/${name}/server/index.ts\"]\n    }\n  }\n}\n\\`\\`\\`\n${\n  vercel\n    ? `\n## Deploy to Vercel\n\nThis project is configured for Vercel deployment:\n\n\\`\\`\\`bash\nvercel deploy\n\\`\\`\\`\n\nThen use the deployed URL as your MCP server endpoint.\n`\n    : \"\"\n}\n`,\n  };\n\n  // Add vercel.json if Vercel setup is enabled\n  if (vercel) {\n    files[\"vercel.json\"] = JSON.stringify(\n      {\n        installCommand: \"npm install\",\n        buildCommand: \"npm run build:ui\",\n        outputDirectory: \".\",\n        functions: {\n          \"server/index.ts\": {\n            includeFiles: `${uiOutputDir}/**`,\n          },\n        },\n        rewrites: [\n          {\n            source: \"/(.*)\",\n            destination: \"/server/index.ts\",\n          },\n        ],\n      },\n      null,\n      2\n    );\n  }\n\n  return files;\n}\n\n// =============================================================================\n// Scaffolding Logic\n// =============================================================================\n\n/**\n * Scaffold a new MCP application project\n */\nexport async function scaffoldProject(options: CreateAppOptions): Promise<void> {\n  const {\n    name,\n    template,\n    directory,\n    vercel = false,\n    skipInstall = false,\n    skipGit = false,\n  } = options;\n\n  // Determine project directory\n  const projectDir = directory ?? path.resolve(process.cwd(), name);\n\n  // Check if directory exists and is not empty\n  if (fs.existsSync(projectDir)) {\n    const files = fs.readdirSync(projectDir);\n    if (files.length > 0) {\n      throw new Error(`Directory ${projectDir} is not empty. Please use an empty directory.`);\n    }\n  } else {\n    fs.mkdirSync(projectDir, { recursive: true });\n  }\n\n  // Get template files\n  const templateFiles =\n    template === \"react\" ? getReactTemplate(name, vercel) : getVanillaTemplate(name, vercel);\n\n  // Write all files\n  for (const [filePath, content] of Object.entries(templateFiles)) {\n    const fullPath = path.join(projectDir, filePath);\n    const dir = path.dirname(fullPath);\n\n    // Create directory if needed\n    if (!fs.existsSync(dir)) {\n      fs.mkdirSync(dir, { recursive: true });\n    }\n\n    // Write file\n    fs.writeFileSync(fullPath, content, \"utf-8\");\n  }\n\n  // Initialize git repository\n  if (!skipGit) {\n    try {\n      execSync(\"git init\", { cwd: projectDir, stdio: \"ignore\" });\n    } catch {\n      // Ignore git init errors (git may not be installed)\n    }\n  }\n\n  // Install dependencies\n  if (!skipInstall) {\n    try {\n      if (vercel) {\n        // Use npm for Vercel projects (better compatibility)\n        execSync(\"npm install\", { cwd: projectDir, stdio: \"inherit\" });\n      } else {\n        // Try pnpm first, fall back to npm\n        try {\n          execSync(\"pnpm install\", { cwd: projectDir, stdio: \"inherit\" });\n        } catch {\n          execSync(\"npm install\", { cwd: projectDir, stdio: \"inherit\" });\n        }\n      }\n    } catch {\n      // eslint-disable-next-line no-console\n      console.warn(\"Warning: Could not install dependencies automatically.\");\n    }\n  }\n}\n"]}

dist/index.js

@@ -96,5 +96,13 @@ import * as fs from 'fs';
 
-import { createApp } from "@mcp-apps-kit/core";
+import { createApp, defineTool, defineUI } from "@mcp-apps-kit/core";
 import { z } from "zod";
 
+// Define the UI for displaying greetings
+const greetingUI = defineUI({
+  name: "Greeting Widget",
+  description: "Displays greeting messages",
+  html: "./${uiOutputDir}/index.html",
+  prefersBorder: true,
+});
+
 const app = createApp({
@@ -105,3 +113,4 @@ name: "${name}",
   tools: {
-    hello: {
+    hello: defineTool({
+      title: "Hello",
       description: "Say hello to someone",
@@ -121,13 +130,5 @@ input: z.object({
       },
-      ui: "greeting",
-    },
+      ui: greetingUI,
+    }),
   },
-
-  ui: {
-    greeting: {
-      html: "./${uiOutputDir}/index.html",
-      description: "Greeting widget",
-      prefersBorder: true,
-    },
-  },
 });
@@ -147,5 +148,13 @@
 
-import { createApp } from "@mcp-apps-kit/core";
+import { createApp, defineTool, defineUI } from "@mcp-apps-kit/core";
 import { z } from "zod";
 
+// Define the UI for displaying greetings
+const greetingUI = defineUI({
+  name: "Greeting Widget",
+  description: "Displays greeting messages",
+  html: "./ui/dist/index.html",
+  prefersBorder: true,
+});
+
 const app = createApp({
@@ -156,3 +165,4 @@ name: "${name}",
   tools: {
-    hello: {
+    hello: defineTool({
+      title: "Hello",
       description: "Say hello to someone",
@@ -172,13 +182,5 @@ input: z.object({
       },
-      ui: "greeting",
-    },
+      ui: greetingUI,
+    }),
   },
-
-  ui: {
-    greeting: {
-      html: "./ui/dist/index.html",
-      description: "Greeting widget",
-      prefersBorder: true,
-    },
-  },
 });
@@ -487,5 +489,13 @@
 
-import { createApp } from "@mcp-apps-kit/core";
+import { createApp, defineTool, defineUI } from "@mcp-apps-kit/core";
 import { z } from "zod";
 
+// Define the UI for displaying greetings
+const greetingUI = defineUI({
+  name: "Greeting Widget",
+  description: "Displays greeting messages",
+  html: "./${uiOutputDir}/index.html",
+  prefersBorder: true,
+});
+
 const app = createApp({
@@ -496,3 +506,4 @@ name: "${name}",
   tools: {
-    hello: {
+    hello: defineTool({
+      title: "Hello",
       description: "Say hello to someone",
@@ -512,13 +523,5 @@ input: z.object({
       },
-      ui: "greeting",
-    },
+      ui: greetingUI,
+    }),
   },
-
-  ui: {
-    greeting: {
-      html: "./${uiOutputDir}/index.html",
-      description: "Greeting widget",
-      prefersBorder: true,
-    },
-  },
 });
@@ -538,5 +541,13 @@
 
-import { createApp } from "@mcp-apps-kit/core";
+import { createApp, defineTool, defineUI } from "@mcp-apps-kit/core";
 import { z } from "zod";
 
+// Define the UI for displaying greetings
+const greetingUI = defineUI({
+  name: "Greeting Widget",
+  description: "Displays greeting messages",
+  html: "./ui/dist/index.html",
+  prefersBorder: true,
+});
+
 const app = createApp({
@@ -547,3 +558,4 @@ name: "${name}",
   tools: {
-    hello: {
+    hello: defineTool({
+      title: "Hello",
       description: "Say hello to someone",
@@ -563,13 +575,5 @@ input: z.object({
       },
-      ui: "greeting",
-    },
+      ui: greetingUI,
+    }),
   },
-
-  ui: {
-    greeting: {
-      html: "./ui/dist/index.html",
-      description: "Greeting widget",
-      prefersBorder: true,
-    },
-  },
 });
@@ -576,0 +580,0 @@

dist/index.js.map

@@ -1,1 +0,1 @@
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},\n});\n\n// Only start locally - Vercel uses the exported Express app\nif (!process.env.VERCEL) {\n  await app.start({ port: 3000 });\n  console.log(\"MCP server running on http://localhost:3000\");\n}\n\n// Export Express app for Vercel\nexport default app.expressApp;\n`\n      : `/**\n * ${name} - MCP Server\n */\n\nimport { createApp } from \"@mcp-apps-kit/core\";\nimport { z } from \"zod\";\n\nconst app = createApp({\n  name: \"${name}\",\n  version: \"0.1.0\",\n\n  tools: {\n    hello: {\n      description: \"Say hello to someone\",\n      input: z.object({\n        name: z.string().describe(\"Name to greet\"),\n      }),\n      output: z.object({\n        message: z.string(),\n        timestamp: z.string(),\n      }),\n      handler: async ({ name }) => {\n        return {\n          message: \\`Hello, \\${name}!\\`,\n          timestamp: new Date().toISOString(),\n        };\n      },\n      ui: \"greeting\",\n    },\n  },\n\n  ui: {\n    greeting: {\n      html: \"./ui/dist/index.html\",\n      description: \"Greeting widget\",\n      prefersBorder: true,\n    },\n  },\n});\n\n// Start server\nawait app.start({ port: 3000 });\nconsole.log(\"MCP server running on http://localhost:3000\");\n`,\n    \"ui/src/App.tsx\": `/**\n * ${name} - UI Component\n */\n\nimport {\n  useAppsClient,\n  useHostContext,\n  useDocumentTheme,\n  useHostStyleVariables,\n} from \"@mcp-apps-kit/ui-react\";\n\nexport function App() {\n  const client = useAppsClient();\n  const context = useHostContext();\n\n  // Apply theme and host styles\n  useDocumentTheme(\"light\", \"dark\");\n  useHostStyleVariables();\n\n  // Get tool output from client\n  const output = client.toolOutput as { message?: string; timestamp?: string } | undefined;\n\n  return (\n    <div className=\"container\">\n      {output?.message ? (\n        <div className=\"greeting\">\n          <h1>{output.message}</h1>\n          <p className=\"timestamp\">Sent at: {output.timestamp}</p>\n        </div>\n      ) : (\n        <p className=\"waiting\">Waiting for greeting...</p>\n      )}\n\n      <button\n        className=\"button\"\n        onClick={() => client.sendFollowUpMessage(\"Please greet me again!\")}\n      >\n        Request New Greeting\n      </button>\n\n      <footer className=\"meta\">\n        Theme: {context.theme} | Locale: {context.locale}\n      </footer>\n    </div>\n  );\n}\n`,\n    \"ui/src/main.tsx\": `/**\n * ${name} - UI Entry Point\n */\n\nimport React from \"react\";\nimport { createRoot } from \"react-dom/client\";\nimport { AppsProvider } from \"@mcp-apps-kit/ui-react\";\nimport { App } from \"./App\";\nimport \"./styles.css\";\n\nconst root = document.getElementById(\"root\");\nif (!root) throw new Error(\"Root element not found\");\n\ncreateRoot(root).render(\n  <React.StrictMode>\n    <AppsProvider>\n      <App />\n    </AppsProvider>\n  </React.StrictMode>\n);\n`,\n    \"ui/src/styles.css\": `* {\n  margin: 0;\n  padding: 0;\n  box-sizing: border-box;\n}\n\nbody {\n  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;\n  padding: 16px;\n}\n\n.container {\n  max-width: 400px;\n  margin: 0 auto;\n}\n\n.greeting h1 {\n  font-size: 1.5rem;\n  margin-bottom: 8px;\n}\n\n.timestamp {\n  color: #666;\n  font-size: 0.875rem;\n}\n\n.waiting {\n  color: #999;\n  font-style: italic;\n}\n\n.button {\n  margin-top: 16px;\n  padding: 8px 16px;\n  background: #0066cc;\n  color: white;\n  border: none;\n  border-radius: 4px;\n  cursor: pointer;\n}\n\n.button:hover {\n  background: #0052a3;\n}\n\n.meta {\n  margin-top: 24px;\n  padding-top: 16px;\n  border-top: 1px solid #eee;\n  font-size: 0.75rem;\n  color: #999;\n}\n\n/* Dark mode support */\n.dark body {\n  background: #1a1a1a;\n  color: #fff;\n}\n\n.dark .timestamp {\n  color: #aaa;\n}\n\n.dark .meta {\n  border-color: #333;\n  color: #666;\n}\n`,\n    \"ui/index.html\": `<!DOCTYPE html>\n<html lang=\"en\">\n  <head>\n    <meta charset=\"UTF-8\" />\n    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\" />\n    <title>${name}</title>\n  </head>\n  <body>\n    <div id=\"root\"></div>\n    <script type=\"module\" src=\"/src/main.tsx\"></script>\n  </body>\n</html>\n`,\n    \"ui/vite.config.ts\": `import { defineConfig } from \"vite\";\nimport react from \"@vitejs/plugin-react\";\nimport { viteSingleFile } from \"vite-plugin-singlefile\";\n\nexport default defineConfig({\n  plugins: [react(), viteSingleFile()],\n  root: \"./ui\",\n  build: {\n    outDir: \"${uiOutputDir}\",\n    emptyOutDir: true,\n  },\n});\n`,\n    \".gitignore\": `node_modules/\ndist/\npublic/\n*.log\n.env\n.env.local\n`,\n    \"README.md\": `# ${name}\n\nAn MCP application built with @mcp-apps-kit.\n\n## Development\n\n\\`\\`\\`bash\n${packageManager} install\n${packageManager} run dev\n\\`\\`\\`\n\n## Build\n\n\\`\\`\\`bash\n${packageManager} run build\n\\`\\`\\`\n\n## Connecting to Claude Desktop\n\nAdd to your Claude Desktop config:\n\n\\`\\`\\`json\n{\n  \"mcpServers\": {\n    \"${name}\": {\n      \"command\": \"npx\",\n      \"args\": [\"tsx\", \"path/to/${name}/server/index.ts\"]\n    }\n  }\n}\n\\`\\`\\`\n${\n  vercel\n    ? `\n## Deploy to Vercel\n\nThis project is configured for Vercel deployment:\n\n\\`\\`\\`bash\nvercel deploy\n\\`\\`\\`\n\nThen use the deployed URL as your MCP server endpoint.\n`\n    : \"\"\n}\n`,\n  };\n\n  // Add vercel.json if Vercel setup is enabled\n  if (vercel) {\n    files[\"vercel.json\"] = JSON.stringify(\n      {\n        installCommand: \"npm install\",\n        buildCommand: \"npm run build:ui\",\n        outputDirectory: \".\",\n        functions: {\n          \"server/index.ts\": {\n            includeFiles: `${uiOutputDir}/**`,\n          },\n        },\n        rewrites: [\n          {\n            source: \"/(.*)\",\n            destination: \"/server/index.ts\",\n          },\n        ],\n      },\n      null,\n      2\n    );\n  }\n\n  return files;\n}\n\nfunction getVanillaTemplate(name: string, vercel = false): Record<string, string> {\n  const uiOutputDir = vercel ? \"public\" : \"dist\";\n  const packageManager = vercel ? \"npm\" : \"pnpm\";\n  const versions = getPackageVersions();\n\n  const files: Record<string, string> = {\n    \"package.json\": JSON.stringify(\n      {\n        name,\n        version: \"0.1.0\",\n        type: \"module\",\n        scripts: {\n          dev: `concurrently \"${packageManager} run dev:server\" \"${packageManager} run dev:ui\"`,\n          \"dev:server\": \"tsx watch server/index.ts\",\n          \"dev:ui\": \"vite --config ui/vite.config.ts\",\n          build: `${packageManager} run build:ui && tsc`,\n          \"build:ui\": \"vite build --config ui/vite.config.ts\",\n          start: \"node dist/server/index.js\",\n        },\n        dependencies: {\n          \"@mcp-apps-kit/core\": versions.core,\n          \"@mcp-apps-kit/ui\": versions.ui,\n          zod: \"^3.22.0\",\n          ...(vercel ? { express: \"^4.21.0\" } : {}),\n        },\n        devDependencies: {\n          concurrently: \"^8.2.0\",\n          tsx: \"^4.7.0\",\n          typescript: \"^5.3.0\",\n          vite: \"^5.0.0\",\n          \"vite-plugin-singlefile\": \"^2.0.0\",\n        },\n      },\n      null,\n      2\n    ),\n    \"tsconfig.json\": JSON.stringify(\n      {\n        compilerOptions: {\n          target: \"ES2020\",\n          module: \"ESNext\",\n          moduleResolution: \"bundler\",\n          strict: true,\n          esModuleInterop: true,\n          skipLibCheck: true,\n          declaration: true,\n          outDir: \"dist\",\n        },\n        include: [\"server/**/*\", \"ui/src/**/*\"],\n        exclude: [\"node_modules\", \"dist\"],\n      },\n      null,\n      2\n    ),\n    \"server/index.ts\": vercel\n      ? `/**\n * ${name} - MCP Server\n */\n\n// Required for Vercel to detect Express\nimport \"express\";\n\nimport { createApp } from \"@mcp-apps-kit/core\";\nimport { z } from \"zod\";\n\nconst app = createApp({\n  name: \"${name}\",\n  version: \"0.1.0\",\n\n  tools: {\n    hello: {\n      description: \"Say hello to someone\",\n      input: z.object({\n        name: z.string().describe(\"Name to greet\"),\n      }),\n      output: z.object({\n        message: z.string(),\n        timestamp: z.string(),\n      }),\n      handler: async ({ name }) => {\n        return {\n          message: \\`Hello, \\${name}!\\`,\n          timestamp: new Date().toISOString(),\n        };\n      },\n      ui: \"greeting\",\n    },\n  },\n\n  ui: {\n    greeting: {\n      html: \"./${uiOutputDir}/index.html\",\n      description: \"Greeting widget\",\n      prefersBorder: true,\n    },\n  },\n});\n\n// Only start locally - Vercel uses the exported Express app\nif (!process.env.VERCEL) {\n  await app.start({ port: 3000 });\n  console.log(\"MCP server running on http://localhost:3000\");\n}\n\n// Export Express app for Vercel\nexport default app.expressApp;\n`\n      : `/**\n * ${name} - MCP Server\n */\n\nimport { createApp } from \"@mcp-apps-kit/core\";\nimport { z } from \"zod\";\n\nconst app = createApp({\n  name: \"${name}\",\n  version: \"0.1.0\",\n\n  tools: {\n    hello: {\n      description: \"Say hello to someone\",\n      input: z.object({\n        name: z.string().describe(\"Name to greet\"),\n      }),\n      output: z.object({\n        message: z.string(),\n        timestamp: z.string(),\n      }),\n      handler: async ({ name }) => {\n        return {\n          message: \\`Hello, \\${name}!\\`,\n          timestamp: new Date().toISOString(),\n        };\n      },\n      ui: \"greeting\",\n    },\n  },\n\n  ui: {\n    greeting: {\n      html: \"./ui/dist/index.html\",\n      description: \"Greeting widget\",\n      prefersBorder: true,\n    },\n  },\n});\n\n// Start server\nawait app.start({ port: 3000 });\nconsole.log(\"MCP server running on http://localhost:3000\");\n`,\n    \"ui/src/main.ts\": `/**\n * ${name} - UI Entry Point\n */\n\nimport { createClient } from \"@mcp-apps-kit/ui\";\nimport \"./styles.css\";\n\nasync function main() {\n  const client = await createClient();\n\n  // Get container\n  const container = document.getElementById(\"app\");\n  if (!container) throw new Error(\"Container not found\");\n\n  // Render initial UI\n  render(container, client);\n\n  // Subscribe to context changes\n  client.onHostContextChange((context) => {\n    document.documentElement.className = context.theme;\n    render(container, client);\n  });\n}\n\nfunction render(container: HTMLElement, client: ReturnType<typeof createClient> extends Promise<infer T> ? T : never) {\n  const output = client.toolOutput as { message?: string; timestamp?: string } | undefined;\n  const context = client.hostContext;\n\n  container.innerHTML = \\`\n    <div class=\"container\">\n      \\${output?.message ? \\`\n        <div class=\"greeting\">\n          <h1>\\${output.message}</h1>\n          <p class=\"timestamp\">Sent at: \\${output.timestamp}</p>\n        </div>\n      \\` : \\`\n        <p class=\"waiting\">Waiting for greeting...</p>\n      \\`}\n\n      <button class=\"button\" id=\"request-btn\">\n        Request New Greeting\n      </button>\n\n      <footer class=\"meta\">\n        Theme: \\${context.theme} | Locale: \\${context.locale}\n      </footer>\n    </div>\n  \\`;\n\n  // Add event listener\n  const btn = document.getElementById(\"request-btn\");\n  btn?.addEventListener(\"click\", () => {\n    client.sendFollowUpMessage(\"Please greet me again!\");\n  });\n}\n\nmain();\n`,\n    \"ui/src/styles.css\": `* {\n  margin: 0;\n  padding: 0;\n  box-sizing: border-box;\n}\n\nbody {\n  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;\n  padding: 16px;\n}\n\n.container {\n  max-width: 400px;\n  margin: 0 auto;\n}\n\n.greeting h1 {\n  font-size: 1.5rem;\n  margin-bottom: 8px;\n}\n\n.timestamp {\n  color: #666;\n  font-size: 0.875rem;\n}\n\n.waiting {\n  color: #999;\n  font-style: italic;\n}\n\n.button {\n  margin-top: 16px;\n  padding: 8px 16px;\n  background: #0066cc;\n  color: white;\n  border: none;\n  border-radius: 4px;\n  cursor: pointer;\n}\n\n.button:hover {\n  background: #0052a3;\n}\n\n.meta {\n  margin-top: 24px;\n  padding-top: 16px;\n  border-top: 1px solid #eee;\n  font-size: 0.75rem;\n  color: #999;\n}\n\n/* Dark mode support */\n.dark body {\n  background: #1a1a1a;\n  color: #fff;\n}\n\n.dark .timestamp {\n  color: #aaa;\n}\n\n.dark .meta {\n  border-color: #333;\n  color: #666;\n}\n`,\n    \"ui/index.html\": `<!DOCTYPE html>\n<html lang=\"en\">\n  <head>\n    <meta charset=\"UTF-8\" />\n    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\" />\n    <title>${name}</title>\n  </head>\n  <body>\n    <div id=\"app\"></div>\n    <script type=\"module\" src=\"/src/main.ts\"></script>\n  </body>\n</html>\n`,\n    \"ui/vite.config.ts\": `import { defineConfig } from \"vite\";\nimport { viteSingleFile } from \"vite-plugin-singlefile\";\n\nexport default defineConfig({\n  plugins: [viteSingleFile()],\n  root: \"./ui\",\n  build: {\n    outDir: \"${uiOutputDir}\",\n    emptyOutDir: true,\n  },\n});\n`,\n    \".gitignore\": `node_modules/\ndist/\npublic/\n*.log\n.env\n.env.local\n`,\n    \"README.md\": `# ${name}\n\nAn MCP application built with @mcp-apps-kit.\n\n## Development\n\n\\`\\`\\`bash\n${packageManager} install\n${packageManager} run dev\n\\`\\`\\`\n\n## Build\n\n\\`\\`\\`bash\n${packageManager} run build\n\\`\\`\\`\n\n## Connecting to Claude Desktop\n\nAdd to your Claude Desktop config:\n\n\\`\\`\\`json\n{\n  \"mcpServers\": {\n    \"${name}\": {\n      \"command\": \"npx\",\n      \"args\": [\"tsx\", \"path/to/${name}/server/index.ts\"]\n    }\n  }\n}\n\\`\\`\\`\n${\n  vercel\n    ? `\n## Deploy to Vercel\n\nThis project is configured for Vercel deployment:\n\n\\`\\`\\`bash\nvercel deploy\n\\`\\`\\`\n\nThen use the deployed URL as your MCP server endpoint.\n`\n    : \"\"\n}\n`,\n  };\n\n  // Add vercel.json if Vercel setup is enabled\n  if (vercel) {\n    files[\"vercel.json\"] = JSON.stringify(\n      {\n        installCommand: \"npm install\",\n        buildCommand: \"npm run build:ui\",\n        outputDirectory: \".\",\n        functions: {\n          \"server/index.ts\": {\n            includeFiles: `${uiOutputDir}/**`,\n          },\n        },\n        rewrites: [\n          {\n            source: \"/(.*)\",\n            destination: \"/server/index.ts\",\n          },\n        ],\n      },\n      null,\n      2\n    );\n  }\n\n  return files;\n}\n\n// =============================================================================\n// Scaffolding Logic\n// =============================================================================\n\n/**\n * Scaffold a new MCP application project\n */\nexport async function scaffoldProject(options: CreateAppOptions): Promise<void> {\n  const {\n    name,\n    template,\n    directory,\n    vercel = false,\n    skipInstall = false,\n    skipGit = false,\n  } = options;\n\n  // Determine project directory\n  const projectDir = directory ?? path.resolve(process.cwd(), name);\n\n  // Check if directory exists and is not empty\n  if (fs.existsSync(projectDir)) {\n    const files = fs.readdirSync(projectDir);\n    if (files.length > 0) {\n      throw new Error(`Directory ${projectDir} is not empty. Please use an empty directory.`);\n    }\n  } else {\n    fs.mkdirSync(projectDir, { recursive: true });\n  }\n\n  // Get template files\n  const templateFiles =\n    template === \"react\" ? getReactTemplate(name, vercel) : getVanillaTemplate(name, vercel);\n\n  // Write all files\n  for (const [filePath, content] of Object.entries(templateFiles)) {\n    const fullPath = path.join(projectDir, filePath);\n    const dir = path.dirname(fullPath);\n\n    // Create directory if needed\n    if (!fs.existsSync(dir)) {\n      fs.mkdirSync(dir, { recursive: true });\n    }\n\n    // Write file\n    fs.writeFileSync(fullPath, content, \"utf-8\");\n  }\n\n  // Initialize git repository\n  if (!skipGit) {\n    try {\n      execSync(\"git init\", { cwd: projectDir, stdio: \"ignore\" });\n    } catch {\n      // Ignore git init errors (git may not be installed)\n    }\n  }\n\n  // Install dependencies\n  if (!skipInstall) {\n    try {\n      if (vercel) {\n        // Use npm for Vercel projects (better compatibility)\n        execSync(\"npm install\", { cwd: projectDir, stdio: \"inherit\" });\n      } else {\n        // Try pnpm first, fall back to npm\n        try {\n          execSync(\"pnpm install\", { cwd: projectDir, stdio: \"inherit\" });\n        } catch {\n          execSync(\"npm install\", { cwd: projectDir, stdio: \"inherit\" });\n        }\n      }\n    } catch {\n      // eslint-disable-next-line no-console\n      console.warn(\"Warning: Could not install dependencies automatically.\");\n    }\n  }\n}\n"]}
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*/\nfunction fetchLatestVersion(packageName: string): string {\n  try {\n    const result = execSync(`npm view ${packageName} version`, {\n      encoding: \"utf-8\",\n      stdio: [\"pipe\", \"pipe\", \"pipe\"],\n    }).trim();\n    return `^${result}`;\n  } catch {\n    // Fallback to a reasonable default if we can't fetch\n    return \"^0.2.0\";\n  }\n}\n\n/**\n * Get the versions of @mcp-apps-kit packages from npm registry\n */\nfunction getPackageVersions(): PackageVersions {\n  if (cachedVersions) {\n    return cachedVersions;\n  }\n\n  cachedVersions = {\n    core: fetchLatestVersion(\"@mcp-apps-kit/core\"),\n    ui: fetchLatestVersion(\"@mcp-apps-kit/ui\"),\n    uiReact: fetchLatestVersion(\"@mcp-apps-kit/ui-react\"),\n  };\n\n  return cachedVersions;\n}\n\n// =============================================================================\n// Template Content\n// =============================================================================\n\nfunction getReactTemplate(name: string, vercel = false): Record<string, string> {\n  const uiOutputDir = vercel ? \"public\" : \"dist\";\n  const packageManager = vercel ? \"npm\" : \"pnpm\";\n  const versions = getPackageVersions();\n\n  const files: Record<string, string> = {\n    \"package.json\": JSON.stringify(\n      {\n        name,\n        version: \"0.1.0\",\n        type: \"module\",\n        scripts: {\n          dev: `concurrently \"${packageManager} run dev:server\" \"${packageManager} run dev:ui\"`,\n          \"dev:server\": \"tsx watch server/index.ts\",\n          \"dev:ui\": \"vite --config ui/vite.config.ts\",\n          build: `${packageManager} run build:ui && tsc`,\n          \"build:ui\": \"vite build --config ui/vite.config.ts\",\n          start: \"node dist/server/index.js\",\n        },\n        dependencies: {\n          \"@mcp-apps-kit/core\": versions.core,\n          \"@mcp-apps-kit/ui\": versions.ui,\n          \"@mcp-apps-kit/ui-react\": versions.uiReact,\n          react: \"^18.2.0\",\n          \"react-dom\": \"^18.2.0\",\n          zod: \"^3.22.0\",\n          ...(vercel ? { express: \"^4.21.0\" } : {}),\n        },\n        devDependencies: {\n          \"@types/react\": \"^18.2.0\",\n          \"@types/react-dom\": \"^18.2.0\",\n          \"@vitejs/plugin-react\": \"^4.2.0\",\n          concurrently: \"^8.2.0\",\n          tsx: \"^4.7.0\",\n          typescript: \"^5.3.0\",\n          vite: \"^5.0.0\",\n          \"vite-plugin-singlefile\": \"^2.0.0\",\n        },\n      },\n      null,\n      2\n    ),\n    \"tsconfig.json\": JSON.stringify(\n      {\n        compilerOptions: {\n          target: \"ES2020\",\n          module: \"ESNext\",\n          moduleResolution: \"bundler\",\n          strict: true,\n          esModuleInterop: true,\n          skipLibCheck: true,\n          declaration: true,\n          outDir: \"dist\",\n          jsx: \"react-jsx\",\n        },\n        include: [\"server/**/*\", \"ui/src/**/*\"],\n        exclude: [\"node_modules\", \"dist\"],\n      },\n      null,\n      2\n    ),\n    \"server/index.ts\": vercel\n      ? `/**\n * ${name} - MCP Server\n */\n\n// Required for Vercel to detect Express\nimport \"express\";\n\nimport { createApp, defineTool, defineUI } from \"@mcp-apps-kit/core\";\nimport { z } from \"zod\";\n\n// Define the UI for displaying greetings\nconst greetingUI = defineUI({\n  name: \"Greeting Widget\",\n  description: \"Displays greeting messages\",\n  html: \"./${uiOutputDir}/index.html\",\n  prefersBorder: true,\n});\n\nconst app = createApp({\n  name: \"${name}\",\n  version: \"0.1.0\",\n\n  tools: {\n    hello: defineTool({\n      title: \"Hello\",\n      description: \"Say hello to someone\",\n      input: z.object({\n        name: z.string().describe(\"Name to greet\"),\n      }),\n      output: z.object({\n        message: z.string(),\n        timestamp: z.string(),\n      }),\n      handler: async ({ name }) => {\n        return {\n          message: \\`Hello, \\${name}!\\`,\n          timestamp: new Date().toISOString(),\n        };\n      },\n      ui: greetingUI,\n    }),\n  },\n});\n\n// Only start locally - Vercel uses the exported Express app\nif (!process.env.VERCEL) {\n  await app.start({ port: 3000 });\n  console.log(\"MCP server running on http://localhost:3000\");\n}\n\n// Export Express app for Vercel\nexport default app.expressApp;\n`\n      : `/**\n * ${name} - MCP Server\n */\n\nimport { createApp, defineTool, defineUI } from \"@mcp-apps-kit/core\";\nimport { z } from \"zod\";\n\n// Define the UI for displaying greetings\nconst greetingUI = defineUI({\n  name: \"Greeting Widget\",\n  description: \"Displays greeting messages\",\n  html: \"./ui/dist/index.html\",\n  prefersBorder: true,\n});\n\nconst app = createApp({\n  name: \"${name}\",\n  version: \"0.1.0\",\n\n  tools: {\n    hello: defineTool({\n      title: \"Hello\",\n      description: \"Say hello to someone\",\n      input: z.object({\n        name: z.string().describe(\"Name to greet\"),\n      }),\n      output: z.object({\n        message: z.string(),\n        timestamp: z.string(),\n      }),\n      handler: async ({ name }) => {\n        return {\n          message: \\`Hello, \\${name}!\\`,\n          timestamp: new Date().toISOString(),\n        };\n      },\n      ui: greetingUI,\n    }),\n  },\n});\n\n// Start server\nawait app.start({ port: 3000 });\nconsole.log(\"MCP server running on http://localhost:3000\");\n`,\n    \"ui/src/App.tsx\": `/**\n * ${name} - UI Component\n */\n\nimport {\n  useAppsClient,\n  useHostContext,\n  useDocumentTheme,\n  useHostStyleVariables,\n} from \"@mcp-apps-kit/ui-react\";\n\nexport function App() {\n  const client = useAppsClient();\n  const context = useHostContext();\n\n  // Apply theme and host styles\n  useDocumentTheme(\"light\", \"dark\");\n  useHostStyleVariables();\n\n  // Get tool output from client\n  const output = client.toolOutput as { message?: string; timestamp?: string } | undefined;\n\n  return (\n    <div className=\"container\">\n      {output?.message ? (\n        <div className=\"greeting\">\n          <h1>{output.message}</h1>\n          <p className=\"timestamp\">Sent at: {output.timestamp}</p>\n        </div>\n      ) : (\n        <p className=\"waiting\">Waiting for greeting...</p>\n      )}\n\n      <button\n        className=\"button\"\n        onClick={() => client.sendFollowUpMessage(\"Please greet me again!\")}\n      >\n        Request New Greeting\n      </button>\n\n      <footer className=\"meta\">\n        Theme: {context.theme} | Locale: {context.locale}\n      </footer>\n    </div>\n  );\n}\n`,\n    \"ui/src/main.tsx\": `/**\n * ${name} - UI Entry Point\n */\n\nimport React from \"react\";\nimport { createRoot } from \"react-dom/client\";\nimport { AppsProvider } from \"@mcp-apps-kit/ui-react\";\nimport { App } from \"./App\";\nimport \"./styles.css\";\n\nconst root = document.getElementById(\"root\");\nif (!root) throw new Error(\"Root element not found\");\n\ncreateRoot(root).render(\n  <React.StrictMode>\n    <AppsProvider>\n      <App />\n    </AppsProvider>\n  </React.StrictMode>\n);\n`,\n    \"ui/src/styles.css\": `* {\n  margin: 0;\n  padding: 0;\n  box-sizing: border-box;\n}\n\nbody {\n  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;\n  padding: 16px;\n}\n\n.container {\n  max-width: 400px;\n  margin: 0 auto;\n}\n\n.greeting h1 {\n  font-size: 1.5rem;\n  margin-bottom: 8px;\n}\n\n.timestamp {\n  color: #666;\n  font-size: 0.875rem;\n}\n\n.waiting {\n  color: #999;\n  font-style: italic;\n}\n\n.button {\n  margin-top: 16px;\n  padding: 8px 16px;\n  background: #0066cc;\n  color: white;\n  border: none;\n  border-radius: 4px;\n  cursor: pointer;\n}\n\n.button:hover {\n  background: #0052a3;\n}\n\n.meta {\n  margin-top: 24px;\n  padding-top: 16px;\n  border-top: 1px solid #eee;\n  font-size: 0.75rem;\n  color: #999;\n}\n\n/* Dark mode support */\n.dark body {\n  background: #1a1a1a;\n  color: #fff;\n}\n\n.dark .timestamp {\n  color: #aaa;\n}\n\n.dark .meta {\n  border-color: #333;\n  color: #666;\n}\n`,\n    \"ui/index.html\": `<!DOCTYPE html>\n<html lang=\"en\">\n  <head>\n    <meta charset=\"UTF-8\" />\n    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\" />\n    <title>${name}</title>\n  </head>\n  <body>\n    <div id=\"root\"></div>\n    <script type=\"module\" src=\"/src/main.tsx\"></script>\n  </body>\n</html>\n`,\n    \"ui/vite.config.ts\": `import { defineConfig } from \"vite\";\nimport react from \"@vitejs/plugin-react\";\nimport { viteSingleFile } from \"vite-plugin-singlefile\";\n\nexport default defineConfig({\n  plugins: [react(), viteSingleFile()],\n  root: \"./ui\",\n  build: {\n    outDir: \"${uiOutputDir}\",\n    emptyOutDir: true,\n  },\n});\n`,\n    \".gitignore\": `node_modules/\ndist/\npublic/\n*.log\n.env\n.env.local\n`,\n    \"README.md\": `# ${name}\n\nAn MCP application built with @mcp-apps-kit.\n\n## Development\n\n\\`\\`\\`bash\n${packageManager} install\n${packageManager} run dev\n\\`\\`\\`\n\n## Build\n\n\\`\\`\\`bash\n${packageManager} run build\n\\`\\`\\`\n\n## Connecting to Claude Desktop\n\nAdd to your Claude Desktop config:\n\n\\`\\`\\`json\n{\n  \"mcpServers\": {\n    \"${name}\": {\n      \"command\": \"npx\",\n      \"args\": [\"tsx\", \"path/to/${name}/server/index.ts\"]\n    }\n  }\n}\n\\`\\`\\`\n${\n  vercel\n    ? `\n## Deploy to Vercel\n\nThis project is configured for Vercel deployment:\n\n\\`\\`\\`bash\nvercel deploy\n\\`\\`\\`\n\nThen use the deployed URL as your MCP server endpoint.\n`\n    : \"\"\n}\n`,\n  };\n\n  // Add vercel.json if Vercel setup is enabled\n  if (vercel) {\n    files[\"vercel.json\"] = JSON.stringify(\n      {\n        installCommand: \"npm install\",\n        buildCommand: \"npm run build:ui\",\n        outputDirectory: \".\",\n        functions: {\n          \"server/index.ts\": {\n            includeFiles: `${uiOutputDir}/**`,\n          },\n        },\n        rewrites: [\n          {\n            source: \"/(.*)\",\n            destination: \"/server/index.ts\",\n          },\n        ],\n      },\n      null,\n      2\n    );\n  }\n\n  return files;\n}\n\nfunction getVanillaTemplate(name: string, vercel = false): Record<string, string> {\n  const uiOutputDir = vercel ? \"public\" : \"dist\";\n  const packageManager = vercel ? \"npm\" : \"pnpm\";\n  const versions = getPackageVersions();\n\n  const files: Record<string, string> = {\n    \"package.json\": JSON.stringify(\n      {\n        name,\n        version: \"0.1.0\",\n        type: \"module\",\n        scripts: {\n          dev: `concurrently \"${packageManager} run dev:server\" \"${packageManager} run dev:ui\"`,\n          \"dev:server\": \"tsx watch server/index.ts\",\n          \"dev:ui\": \"vite --config ui/vite.config.ts\",\n          build: `${packageManager} run build:ui && tsc`,\n          \"build:ui\": \"vite build --config ui/vite.config.ts\",\n          start: \"node dist/server/index.js\",\n        },\n        dependencies: {\n          \"@mcp-apps-kit/core\": versions.core,\n          \"@mcp-apps-kit/ui\": versions.ui,\n          zod: \"^3.22.0\",\n          ...(vercel ? { express: \"^4.21.0\" } : {}),\n        },\n        devDependencies: {\n          concurrently: \"^8.2.0\",\n          tsx: \"^4.7.0\",\n          typescript: \"^5.3.0\",\n          vite: \"^5.0.0\",\n          \"vite-plugin-singlefile\": \"^2.0.0\",\n        },\n      },\n      null,\n      2\n    ),\n    \"tsconfig.json\": JSON.stringify(\n      {\n        compilerOptions: {\n          target: \"ES2020\",\n          module: \"ESNext\",\n          moduleResolution: \"bundler\",\n          strict: true,\n          esModuleInterop: true,\n          skipLibCheck: true,\n          declaration: true,\n          outDir: \"dist\",\n        },\n        include: [\"server/**/*\", \"ui/src/**/*\"],\n        exclude: [\"node_modules\", \"dist\"],\n      },\n      null,\n      2\n    ),\n    \"server/index.ts\": vercel\n      ? `/**\n * ${name} - MCP Server\n */\n\n// Required for Vercel to detect Express\nimport \"express\";\n\nimport { createApp, defineTool, defineUI } from \"@mcp-apps-kit/core\";\nimport { z } from \"zod\";\n\n// Define the UI for displaying greetings\nconst greetingUI = defineUI({\n  name: \"Greeting Widget\",\n  description: \"Displays greeting messages\",\n  html: \"./${uiOutputDir}/index.html\",\n  prefersBorder: true,\n});\n\nconst app = createApp({\n  name: \"${name}\",\n  version: \"0.1.0\",\n\n  tools: {\n    hello: defineTool({\n      title: \"Hello\",\n      description: \"Say hello to someone\",\n      input: z.object({\n        name: z.string().describe(\"Name to greet\"),\n      }),\n      output: z.object({\n        message: z.string(),\n        timestamp: z.string(),\n      }),\n      handler: async ({ name }) => {\n        return {\n          message: \\`Hello, \\${name}!\\`,\n          timestamp: new Date().toISOString(),\n        };\n      },\n      ui: greetingUI,\n    }),\n  },\n});\n\n// Only start locally - Vercel uses the exported Express app\nif (!process.env.VERCEL) {\n  await app.start({ port: 3000 });\n  console.log(\"MCP server running on http://localhost:3000\");\n}\n\n// Export Express app for Vercel\nexport default app.expressApp;\n`\n      : `/**\n * ${name} - MCP Server\n */\n\nimport { createApp, defineTool, defineUI } from \"@mcp-apps-kit/core\";\nimport { z } from \"zod\";\n\n// Define the UI for displaying greetings\nconst greetingUI = defineUI({\n  name: \"Greeting Widget\",\n  description: \"Displays greeting messages\",\n  html: \"./ui/dist/index.html\",\n  prefersBorder: true,\n});\n\nconst app = createApp({\n  name: \"${name}\",\n  version: \"0.1.0\",\n\n  tools: {\n    hello: defineTool({\n      title: \"Hello\",\n      description: \"Say hello to someone\",\n      input: z.object({\n        name: z.string().describe(\"Name to greet\"),\n      }),\n      output: z.object({\n        message: z.string(),\n        timestamp: z.string(),\n      }),\n      handler: async ({ name }) => {\n        return {\n          message: \\`Hello, \\${name}!\\`,\n          timestamp: new Date().toISOString(),\n        };\n      },\n      ui: greetingUI,\n    }),\n  },\n});\n\n// Start server\nawait app.start({ port: 3000 });\nconsole.log(\"MCP server running on http://localhost:3000\");\n`,\n    \"ui/src/main.ts\": `/**\n * ${name} - UI Entry Point\n */\n\nimport { createClient } from \"@mcp-apps-kit/ui\";\nimport \"./styles.css\";\n\nasync function main() {\n  const client = await createClient();\n\n  // Get container\n  const container = document.getElementById(\"app\");\n  if (!container) throw new Error(\"Container not found\");\n\n  // Render initial UI\n  render(container, client);\n\n  // Subscribe to context changes\n  client.onHostContextChange((context) => {\n    document.documentElement.className = context.theme;\n    render(container, client);\n  });\n}\n\nfunction render(container: HTMLElement, client: ReturnType<typeof createClient> extends Promise<infer T> ? T : never) {\n  const output = client.toolOutput as { message?: string; timestamp?: string } | undefined;\n  const context = client.hostContext;\n\n  container.innerHTML = \\`\n    <div class=\"container\">\n      \\${output?.message ? \\`\n        <div class=\"greeting\">\n          <h1>\\${output.message}</h1>\n          <p class=\"timestamp\">Sent at: \\${output.timestamp}</p>\n        </div>\n      \\` : \\`\n        <p class=\"waiting\">Waiting for greeting...</p>\n      \\`}\n\n      <button class=\"button\" id=\"request-btn\">\n        Request New Greeting\n      </button>\n\n      <footer class=\"meta\">\n        Theme: \\${context.theme} | Locale: \\${context.locale}\n      </footer>\n    </div>\n  \\`;\n\n  // Add event listener\n  const btn = document.getElementById(\"request-btn\");\n  btn?.addEventListener(\"click\", () => {\n    client.sendFollowUpMessage(\"Please greet me again!\");\n  });\n}\n\nmain();\n`,\n    \"ui/src/styles.css\": `* {\n  margin: 0;\n  padding: 0;\n  box-sizing: border-box;\n}\n\nbody {\n  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;\n  padding: 16px;\n}\n\n.container {\n  max-width: 400px;\n  margin: 0 auto;\n}\n\n.greeting h1 {\n  font-size: 1.5rem;\n  margin-bottom: 8px;\n}\n\n.timestamp {\n  color: #666;\n  font-size: 0.875rem;\n}\n\n.waiting {\n  color: #999;\n  font-style: italic;\n}\n\n.button {\n  margin-top: 16px;\n  padding: 8px 16px;\n  background: #0066cc;\n  color: white;\n  border: none;\n  border-radius: 4px;\n  cursor: pointer;\n}\n\n.button:hover {\n  background: #0052a3;\n}\n\n.meta {\n  margin-top: 24px;\n  padding-top: 16px;\n  border-top: 1px solid #eee;\n  font-size: 0.75rem;\n  color: #999;\n}\n\n/* Dark mode support */\n.dark body {\n  background: #1a1a1a;\n  color: #fff;\n}\n\n.dark .timestamp {\n  color: #aaa;\n}\n\n.dark .meta {\n  border-color: #333;\n  color: #666;\n}\n`,\n    \"ui/index.html\": `<!DOCTYPE html>\n<html lang=\"en\">\n  <head>\n    <meta charset=\"UTF-8\" />\n    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\" />\n    <title>${name}</title>\n  </head>\n  <body>\n    <div id=\"app\"></div>\n    <script type=\"module\" src=\"/src/main.ts\"></script>\n  </body>\n</html>\n`,\n    \"ui/vite.config.ts\": `import { defineConfig } from \"vite\";\nimport { viteSingleFile } from \"vite-plugin-singlefile\";\n\nexport default defineConfig({\n  plugins: [viteSingleFile()],\n  root: \"./ui\",\n  build: {\n    outDir: \"${uiOutputDir}\",\n    emptyOutDir: true,\n  },\n});\n`,\n    \".gitignore\": `node_modules/\ndist/\npublic/\n*.log\n.env\n.env.local\n`,\n    \"README.md\": `# ${name}\n\nAn MCP application built with @mcp-apps-kit.\n\n## Development\n\n\\`\\`\\`bash\n${packageManager} install\n${packageManager} run dev\n\\`\\`\\`\n\n## Build\n\n\\`\\`\\`bash\n${packageManager} run build\n\\`\\`\\`\n\n## Connecting to Claude Desktop\n\nAdd to your Claude Desktop config:\n\n\\`\\`\\`json\n{\n  \"mcpServers\": {\n    \"${name}\": {\n      \"command\": \"npx\",\n      \"args\": [\"tsx\", \"path/to/${name}/server/index.ts\"]\n    }\n  }\n}\n\\`\\`\\`\n${\n  vercel\n    ? `\n## Deploy to Vercel\n\nThis project is configured for Vercel deployment:\n\n\\`\\`\\`bash\nvercel deploy\n\\`\\`\\`\n\nThen use the deployed URL as your MCP server endpoint.\n`\n    : \"\"\n}\n`,\n  };\n\n  // Add vercel.json if Vercel setup is enabled\n  if (vercel) {\n    files[\"vercel.json\"] = JSON.stringify(\n      {\n        installCommand: \"npm install\",\n        buildCommand: \"npm run build:ui\",\n        outputDirectory: \".\",\n        functions: {\n          \"server/index.ts\": {\n            includeFiles: `${uiOutputDir}/**`,\n          },\n        },\n        rewrites: [\n          {\n            source: \"/(.*)\",\n            destination: \"/server/index.ts\",\n          },\n        ],\n      },\n      null,\n      2\n    );\n  }\n\n  return files;\n}\n\n// =============================================================================\n// Scaffolding Logic\n// =============================================================================\n\n/**\n * Scaffold a new MCP application project\n */\nexport async function scaffoldProject(options: CreateAppOptions): Promise<void> {\n  const {\n    name,\n    template,\n    directory,\n    vercel = false,\n    skipInstall = false,\n    skipGit = false,\n  } = options;\n\n  // Determine project directory\n  const projectDir = directory ?? path.resolve(process.cwd(), name);\n\n  // Check if directory exists and is not empty\n  if (fs.existsSync(projectDir)) {\n    const files = fs.readdirSync(projectDir);\n    if (files.length > 0) {\n      throw new Error(`Directory ${projectDir} is not empty. Please use an empty directory.`);\n    }\n  } else {\n    fs.mkdirSync(projectDir, { recursive: true });\n  }\n\n  // Get template files\n  const templateFiles =\n    template === \"react\" ? getReactTemplate(name, vercel) : getVanillaTemplate(name, vercel);\n\n  // Write all files\n  for (const [filePath, content] of Object.entries(templateFiles)) {\n    const fullPath = path.join(projectDir, filePath);\n    const dir = path.dirname(fullPath);\n\n    // Create directory if needed\n    if (!fs.existsSync(dir)) {\n      fs.mkdirSync(dir, { recursive: true });\n    }\n\n    // Write file\n    fs.writeFileSync(fullPath, content, \"utf-8\");\n  }\n\n  // Initialize git repository\n  if (!skipGit) {\n    try {\n      execSync(\"git init\", { cwd: projectDir, stdio: \"ignore\" });\n    } catch {\n      // Ignore git init errors (git may not be installed)\n    }\n  }\n\n  // Install dependencies\n  if (!skipInstall) {\n    try {\n      if (vercel) {\n        // Use npm for Vercel projects (better compatibility)\n        execSync(\"npm install\", { cwd: projectDir, stdio: \"inherit\" });\n      } else {\n        // Try pnpm first, fall back to npm\n        try {\n          execSync(\"pnpm install\", { cwd: projectDir, stdio: \"inherit\" });\n        } catch {\n          execSync(\"npm install\", { cwd: projectDir, stdio: \"inherit\" });\n        }\n      }\n    } catch {\n      // eslint-disable-next-line no-console\n      console.warn(\"Warning: Could not install dependencies automatically.\");\n    }\n  }\n}\n"]}

package.json

 {
   "name": "@mcp-apps-kit/create-app",
-  "version": "0.2.4",
+  "version": "0.2.5",
   "description": "CLI tool for scaffolding MCP applications",
@@ -5,0 +5,0 @@ "type": "module",

New alerts

Shell access

Supply chain risk

This module accesses the system shell. Accessing the system shell increases the risk of executing arbitrary code.

Found 1 instance in 1 package

Environment variable access

Supply chain risk

Package accesses environment variables, which may be a sign of credential stuffing or data theft.

Found 1 instance in 1 package

Filesystem access

Supply chain risk

Accesses the file system, and could potentially read sensitive data.

Found 1 instance in 1 package

Long strings

Supply chain risk

Contains long string literals, which may be a sign of obfuscated or packed code.

Found 1 instance in 1 package

Fixed alerts

Shell access

Supply chain risk

This module accesses the system shell. Accessing the system shell increases the risk of executing arbitrary code.

Found 1 instance in 1 package

Environment variable access

Supply chain risk

Package accesses environment variables, which may be a sign of credential stuffing or data theft.

Found 1 instance in 1 package

Filesystem access

Supply chain risk

Accesses the file system, and could potentially read sensitive data.

Found 1 instance in 1 package

Long strings

Supply chain risk

Contains long string literals, which may be a sign of obfuscated or packed code.

Found 1 instance in 1 package

Improved metrics

Total package byte prevSize

176574

1.74%

Lines of code

2478

0.49%

No dependency changes