@agentdb/mcpproxy/bin/mcpproxy.js

MCP proxy server for remote HTTP endpoints supporting JSON and Server-Sent Events

#!/usr/bin/env node

import { spawn } from 'child_process';
import { existsSync } from 'fs';
import { dirname, join } from 'path';
import { fileURLToPath } from 'url';
import { getLocalBinaryPath, downloadBinary } from '../lib/download-binary.js';

const __filename = fileURLToPath(import.meta.url);
const __dirname = dirname(__filename);

async function main() {
  const binaryPath = getLocalBinaryPath();
  
  // Check if binary exists, if not try to download it
  if (!existsSync(binaryPath)) {
    console.error('mcpproxy binary not found. Attempting to download...');
    try {
      await downloadBinary();
    } catch (error) {
      console.error('Failed to download binary:', error.message);
      process.exit(1);
    }
  }
  
  // Execute the binary with all arguments passed through
  const args = process.argv.slice(2);
  const child = spawn(binaryPath, args, {
    stdio: 'inherit',
    shell: false
  });
  
  // Forward signals
  process.on('SIGINT', () => child.kill('SIGINT'));
  process.on('SIGTERM', () => child.kill('SIGTERM'));
  
  // Exit with the same code as the child process
  child.on('exit', (code, signal) => {
    if (signal) {
      process.kill(process.pid, signal);
    } else {
      process.exit(code || 0);
    }
  });
  
  child.on('error', (error) => {
    console.error('Failed to start mcpproxy:', error.message);
    process.exit(1);
  });
}

main().catch(error => {
  console.error('Error:', error.message);
  process.exit(1);
});