MCP Executor Server

import { spawn } from 'child_process'; interface ExecuteCodeArgs { code: string; language: string; timeout: number; libraries: string[]; sse?: (data: any) => void; } export async function executeCode({ code, language, timeout, libraries, sse }: ExecuteCodeArgs): Promise<any> { if (language !== 'python') { return { isError: true, content: [{ type: 'text', text: 'Only Python is supported.' }] }; } return new Promise((resolve) => { console.log('Executing code in Docker container...'); // Execute Python code directly in the container const dockerArgs = [ 'run', '--rm', '-i', 'my-llm-sandbox', 'python', '-c', code ]; const proc = spawn('docker', dockerArgs); let output = ''; let errorOutput = ''; proc.stdout.on('data', (data: Buffer) => { const dataStr = data.toString(); output += dataStr; console.log('[STDOUT]', dataStr); if (sse) sse({ type: 'stdout', data: dataStr }); }); proc.stderr.on('data', (data: Buffer) => { const dataStr = data.toString(); errorOutput += dataStr; console.error('[STDERR]', dataStr); if (sse) sse({ type: 'stderr', data: dataStr }); }); proc.on('close', (code: number) => { console.log(`Process closed with code ${code}`); resolve({ content: [ { type: 'text', text: output }, ...(errorOutput ? [{ type: 'text', text: `Errors: ${errorOutput}` }] : []) ], exitCode: code }); }); proc.on('error', (error: Error) => { console.error('Process error:', error); resolve({ isError: true, content: [ { type: 'text', text: `Error: ${error.message}` } ] }); }); }); }