MCP Time Server Node

#!/usr/bin/env node const net = require('net'); const { spawn } = require('child_process'); // Test performance with persistent server connection async function testPersistentPerformance() { console.log('=== Performance Testing with Persistent Server ===\n'); // Start the server const server = spawn('node', ['dist/index.js'], { stdio: ['pipe', 'pipe', 'pipe'], }); let buffer = ''; const responses = new Map(); let currentId = 1; server.stdout.on('data', (data) => { buffer += data.toString(); const lines = buffer.split('\n'); buffer = lines.pop(); // Keep incomplete line in buffer for (const line of lines) { if (line.trim() && !line.includes('MCP Time Server running')) { try { const response = JSON.parse(line); const resolver = responses.get(response.id); if (resolver) { resolver(response); responses.delete(response.id); } } catch (e) { // Ignore parse errors } } } }); // Wait for server to start await new Promise((resolve) => setTimeout(resolve, 100)); const tests = [ { name: 'get_current_time (first call)', request: { jsonrpc: '2.0', method: 'tools/call', params: { name: 'get_current_time', arguments: { timezone: 'UTC' }, }, }, }, { name: 'get_current_time (cached)', request: { jsonrpc: '2.0', method: 'tools/call', params: { name: 'get_current_time', arguments: { timezone: 'UTC' }, }, }, }, { name: 'convert_timezone', request: { jsonrpc: '2.0', method: 'tools/call', params: { name: 'convert_timezone', arguments: { time: '2025-01-20T15:00:00Z', from_timezone: 'UTC', to_timezone: 'America/New_York', }, }, }, }, { name: 'calculate_duration', request: { jsonrpc: '2.0', method: 'tools/call', params: { name: 'calculate_duration', arguments: { start_time: '2025-01-20T09:00:00', end_time: '2025-01-20T17:30:00', }, }, }, }, ]; // Function to send request and measure time async function measureRequest(request) { const id = currentId++; request.id = id; return new Promise((resolve) => { responses.set(id, resolve); const start = process.hrtime.bigint(); server.stdin.write(JSON.stringify(request) + '\n'); responses.set(id, (response) => { const end = process.hrtime.bigint(); const timeMs = Number(end - start) / 1000000; resolve({ response, timeMs }); }); }); } for (const test of tests) { console.log(`Testing ${test.name}...`); // Warm up await measureRequest(test.request); // Measure 10 requests const times = []; for (let i = 0; i < 10; i++) { const { timeMs } = await measureRequest(test.request); times.push(timeMs); } // Calculate statistics const avg = times.reduce((a, b) => a + b, 0) / times.length; const min = Math.min(...times); const max = Math.max(...times); console.log(` Average: ${avg.toFixed(2)}ms`); console.log(` Min: ${min.toFixed(2)}ms`); console.log(` Max: ${max.toFixed(2)}ms`); console.log(` All < 10ms: ${max < 10 ? '✅ YES' : '❌ NO'}`); console.log(); } // Clean up server.kill(); } testPersistentPerformance().catch(console.error);