Hugging Face MCP Server

#!/usr/bin/env node import { Application } from './application.js'; import { WebServer } from './web-server.js'; import { DEFAULT_WEB_APP_PORT } from '../shared/constants.js'; import { parseArgs } from 'node:util'; import { logger } from './utils/logger.js'; // Parse command line arguments const { values } = parseArgs({ options: { port: { type: 'string', short: 'p' }, json: { type: 'boolean', short: 'j' }, }, args: process.argv.slice(2), }); logger.info('Starting Streamable HTTP server...'); if (values.json) { logger.info('JSON response mode enabled'); } // Set development mode environment variable process.env.NODE_ENV = process.env.NODE_ENV || 'production'; // Configuration with single port for both the web app and MCP API const port = parseInt((values.port as string) || process.env.WEB_APP_PORT || DEFAULT_WEB_APP_PORT.toString()); async function start() { const useJsonMode = values.json || false; // Choose the appropriate transport type based on JSON mode const transportType = useJsonMode ? 'streamableHttpJson' : 'streamableHttp'; // Create WebServer instance const webServer = new WebServer(); // Create Application instance const app = new Application({ transportType, webAppPort: port, webServerInstance: webServer, }); // Start the application await app.start(); // Handle server shutdown let shutdownInProgress = false; const shutdown = async () => { logger.info('Shutting down server...'); shutdownInProgress = true; try { await app.stop(); logger.info('Server shutdown complete'); } catch (error) { logger.error({ error }, 'Error during shutdown'); process.exit(1); } }; process.once('SIGINT', () => { void shutdown(); // Set up second SIGINT handler for force exit process.once('SIGINT', () => { if (shutdownInProgress) { logger.warn('Force exit requested, terminating immediately...'); process.exit(1); } }); }); process.once('SIGTERM', () => { void shutdown(); }); } // Run the async start function start().catch((error: unknown) => { logger.error({ error }, 'Server startup error'); process.exit(1); });