Hugging Face MCP Server

#!/usr/bin/env node // Set environment variables BEFORE importing logger process.env.NODE_ENV = process.env.NODE_ENV || 'production'; process.env.TRANSPORT = process.env.TRANSPORT || 'STDIO'; 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, forceLoggerToStderr } from './utils/logger.js'; // Force logger to use STDERR. The environment variable may not have been set in dev, so just force it. forceLoggerToStderr(); // Parse command line arguments const { values } = parseArgs({ options: { port: { type: 'string', short: 'p' }, }, args: process.argv.slice(2), }); logger.info('Starting (STDIO) server...'); const port = parseInt((values.port as string) || process.env.WEB_APP_PORT || DEFAULT_WEB_APP_PORT.toString()); async function main() { // Create WebServer instance const webServer = new WebServer(); // Create Application instance const app = new Application({ transportType: 'stdio', 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(); }); } main().catch((error: unknown) => { logger.error({ error }, 'Server error'); process.exit(1); });