Claude Code MCP Server

#!/usr/bin/env node const { Server } = require('@modelcontextprotocol/sdk/server/index.js'); const { StdioServerTransport } = require('@modelcontextprotocol/sdk/server/stdio.js'); const { CallToolRequestSchema, ListToolsRequestSchema } = require('@modelcontextprotocol/sdk/types.js'); const { spawn } = require('child_process'); const path = require('path'); require('dotenv').config({ path: path.join(__dirname, '..', '.env') }); class ClaudeCodeMCPServer { constructor() { this.claudePath = process.env.CLAUDE_PATH || 'claude'; this.projectPath = process.env.PROJECT_PATH || process.cwd(); // Create server with proper configuration this.server = new Server( { name: 'claude-code-mcp', version: '1.0.0' }, { capabilities: { tools: {} } } ); this.setupHandlers(); } setupHandlers() { // Register list tools handler this.server.setRequestHandler(ListToolsRequestSchema, async () => ({ tools: [ { name: 'claude_code', description: 'Execute Claude Code commands in a project directory', inputSchema: { type: 'object', properties: { prompt: { type: 'string', description: 'The prompt to send to Claude Code' }, cwd: { type: 'string', description: 'Working directory (optional)' } }, required: ['prompt'] } } ] })); // Register call tool handler this.server.setRequestHandler(CallToolRequestSchema, async (request) => { if (request.params.name === 'claude_code') { return await this.executeClaudeCode(request.params.arguments); } throw new Error(`Unknown tool: ${request.params.name}`); }); } async executeClaudeCode({ prompt, cwd = this.projectPath }) { return new Promise((resolve, _reject) => { console.error(`[MCP] Executing Claude Code with prompt: ${prompt}`); console.error(`[MCP] Working directory: ${cwd}`); // Use echo to simulate Claude response for testing const isTest = process.env.TEST_MODE === 'true'; const command = isTest ? 'echo' : this.claudePath; const args = isTest ? [`Claude would execute: "${prompt}" in ${cwd}`] : []; const claude = spawn(command, args, { cwd, env: { ...process.env }, stdio: ['pipe', 'pipe', 'pipe'] }); let output = ''; let error = ''; if (!isTest) { // Send the prompt to claude claude.stdin.write(`${prompt}\n`); claude.stdin.end(); } claude.stdout.on('data', (data) => { output += data.toString(); }); claude.stderr.on('data', (data) => { error += data.toString(); }); claude.on('close', (code) => { console.error(`[MCP] Command completed with code: ${code}`); if (code === 0) { resolve({ content: [ { type: 'text', text: output || 'Command completed successfully' } ] }); } else { resolve({ content: [ { type: 'text', text: `Error (code ${code}): ${error || 'Unknown error'}` } ], isError: true }); } }); claude.on('error', (err) => { console.error(`[MCP] Failed to start command: ${err.message}`); resolve({ content: [ { type: 'text', text: `Failed to execute: ${err.message}` } ], isError: true }); }); }); } async start() { const transport = new StdioServerTransport(); await this.server.connect(transport); console.error('[MCP] Claude Code MCP Server started'); console.error(`[MCP] Claude path: ${this.claudePath}`); console.error(`[MCP] Project path: ${this.projectPath}`); } } // Start the server async function main() { try { const server = new ClaudeCodeMCPServer(); await server.start(); } catch (error) { console.error('[MCP] Failed to start server:', error); process.exit(1); } } main(); // Handle graceful shutdown process.on('SIGINT', async () => { console.error('\n[MCP] Shutting down Claude Code MCP Server...'); process.exit(0); });