DateTime MCP Server

#!/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: "DateTime MCP Server", version: "0.1.0", }, { capabilities: { tools: {}, }, } ); server.setRequestHandler(ListToolsRequestSchema, async () => { return { tools: [ { name: "get_current_datetime", description: "Get the current date and time", inputSchema: { type: "object", properties: { format: { type: "string", description: "Output format: 'iso' (ISO 8601), 'unix' (timestamp), 'human' (readable), or a custom format string", default: "iso" }, timezone: { type: "string", description: "Timezone (e.g., 'UTC', 'America/New_York'). Defaults to system timezone", default: "system" } } } }, { name: "get_current_date", description: "Get only the current date", inputSchema: { type: "object", properties: { format: { type: "string", description: "Output format: 'iso' (YYYY-MM-DD), 'us' (MM/DD/YYYY), 'eu' (DD/MM/YYYY), or custom format", default: "iso" } } } }, { name: "get_current_time", description: "Get only the current time", inputSchema: { type: "object", properties: { format: { type: "string", description: "Output format: '24h' (HH:MM:SS), '12h' (hh:MM:SS AM/PM), or custom format", default: "24h" }, include_seconds: { type: "boolean", description: "Include seconds in the output", default: true } } } } ] }; }); server.setRequestHandler(CallToolRequestSchema, async (request) => { const now = new Date(); switch (request.params.name) { case "get_current_datetime": { const format = request.params.arguments?.format || "iso"; const timezone = request.params.arguments?.timezone || "system"; let result: string; if (format === "iso") { result = now.toISOString(); } else if (format === "unix") { result = Math.floor(now.getTime() / 1000).toString(); } else if (format === "human") { result = now.toString(); } else { result = formatDate(now, format as string); } return { content: [{ type: "text", text: result }] }; } case "get_current_date": { const format = request.params.arguments?.format || "iso"; let result: string; if (format === "iso") { result = now.toISOString().split('T')[0]; } else if (format === "us") { result = `${(now.getMonth() + 1).toString().padStart(2, '0')}/${now.getDate().toString().padStart(2, '0')}/${now.getFullYear()}`; } else if (format === "eu") { result = `${now.getDate().toString().padStart(2, '0')}/${(now.getMonth() + 1).toString().padStart(2, '0')}/${now.getFullYear()}`; } else { result = formatDate(now, format as string); } return { content: [{ type: "text", text: result }] }; } case "get_current_time": { const format = request.params.arguments?.format || "24h"; const includeSeconds = request.params.arguments?.include_seconds !== false; let result: string; if (format === "24h") { const hours = now.getHours().toString().padStart(2, '0'); const minutes = now.getMinutes().toString().padStart(2, '0'); const seconds = now.getSeconds().toString().padStart(2, '0'); result = includeSeconds ? `${hours}:${minutes}:${seconds}` : `${hours}:${minutes}`; } else if (format === "12h") { let hours = now.getHours(); const ampm = hours >= 12 ? 'PM' : 'AM'; hours = hours % 12 || 12; const minutes = now.getMinutes().toString().padStart(2, '0'); const seconds = now.getSeconds().toString().padStart(2, '0'); result = includeSeconds ? `${hours}:${minutes}:${seconds} ${ampm}` : `${hours}:${minutes} ${ampm}`; } else { result = formatDate(now, format as string); } return { content: [{ type: "text", text: result }] }; } default: throw new Error("Unknown tool"); } }); function formatDate(date: Date, format: string): string { const replacements: { [key: string]: string } = { 'YYYY': date.getFullYear().toString(), 'MM': (date.getMonth() + 1).toString().padStart(2, '0'), 'DD': date.getDate().toString().padStart(2, '0'), 'HH': date.getHours().toString().padStart(2, '0'), 'mm': date.getMinutes().toString().padStart(2, '0'), 'ss': date.getSeconds().toString().padStart(2, '0'), }; let result = format; for (const [key, value] of Object.entries(replacements)) { result = result.replace(new RegExp(key, 'g'), value); } return result; } /** * Start the server using stdio transport. * This allows the server to communicate via standard input/output streams. */ async function main() { const transport = new StdioServerTransport(); await server.connect(transport); } main().catch((error) => { console.error("Server error:", error); process.exit(1); });