#!/usr/bin/env node
/**
* NPM wrapper for robotics-mcp MCP Server
*
* This script launches the Python MCP server via FastMCP.
* Python and dependencies must be installed separately.
*/
import { spawn } from 'child_process';
import { fileURLToPath } from 'url';
import { dirname, join } from 'path';
import { existsSync } from 'fs';
const __filename = fileURLToPath(import.meta.url);
const __dirname = dirname(__filename);
const serverRoot = join(__dirname, '..');
// Determine Python command based on platform
const pythonCmd = process.platform === 'win32' ? 'python' : 'python3';
// Try to find Python module entry point
// Common patterns: python -m module_name or python -m module_name.__main__
const moduleName = 'robotics_mcp';
const possibleCommands = [
['-m', moduleName],
['-m', moduleName + '.__main__'],
['-m', moduleName + '.server'],
];
// Function to test if a Python command works
function testPythonCommand(args) {
return new Promise((resolve) => {
const testProc = spawn(pythonCmd, ['-c', import ], {
stdio: 'pipe',
cwd: serverRoot
});
testProc.on('close', (code) => {
resolve(code === 0);
});
testProc.on('error', () => {
resolve(false);
});
});
}
// Find working command
async function findWorkingCommand() {
for (const args of possibleCommands) {
const works = await testPythonCommand(args);
if (works) {
return args;
}
}
// Fallback to first option
return possibleCommands[0];
}
// Main execution
(async () => {
try {
const commandArgs = await findWorkingCommand();
const proc = spawn(pythonCmd, commandArgs, {
stdio: 'inherit',
cwd: serverRoot,
env: {
...process.env,
PYTHONUNBUFFERED: '1'
}
});
proc.on('error', (err) => {
console.error('Error starting Python server: ' + err.message);
console.error('\nMake sure Python is installed and ''robotics_mcp'' is available.');
console.error('Try: pip install -e .');
process.exit(1);
});
proc.on('exit', (code) => {
process.exit(code || 0);
});
// Handle signals
process.on('SIGINT', () => {
proc.kill('SIGINT');
});
process.on('SIGTERM', () => {
proc.kill('SIGTERM');
});
} catch (error) {
console.error('Failed to start server: ' + error.message);
process.exit(1);
}
})();
