🚀 Hello World

examples/hello-world-node/server/index.js

@@ -0,0 +1,70 @@
+#!/usr/bin/env node
+
+import { Server } from "@modelcontextprotocol/sdk/server/index.js";
+import { StdioServerTransport } from "@modelcontextprotocol/sdk/server/stdio.js";
+import {
+  CallToolRequestSchema,
+  ListToolsRequestSchema,
+} from "@modelcontextprotocol/sdk/types.js";
+
+const server = new Server(
+  {
+    name: "hello-world-node",
+    version: "1.0.0",
+  },
+  {
+    capabilities: {
+      tools: {},
+    },
+  },
+);
+
+// Handle tool listing
+server.setRequestHandler(ListToolsRequestSchema, async (request) => {
+  return {
+    tools: [
+      {
+        name: "get_current_time",
+        description: "Get the current computer time",
+        inputSchema: {
+          type: "object",
+          properties: {},
+        },
+      },
+    ],
+  };
+});
+
+// Handle tool execution
+server.setRequestHandler(CallToolRequestSchema, async (request) => {
+  if (request.params.name === "get_current_time") {
+    const now = new Date();
+    const timeString = now.toLocaleString("en-US", {
+      weekday: "long",
+      year: "numeric",
+      month: "long",
+      day: "numeric",
+      hour: "2-digit",
+      minute: "2-digit",
+      second: "2-digit",
+      timeZoneName: "short",
+    });
+
+    return {
+      content: [
+        {
+          type: "text",
+          text: `The current time is: ${timeString}`,
+        },
+      ],
+    };
+  }
+
+  throw new Error(`Unknown tool: ${request.params.name}`);
+});
+
+// Start the server
+const transport = new StdioServerTransport();
+server.connect(transport);
+
+console.error("Hello World MCP server running...");