evolution-api-mcp/bin/evolution-api-mcp.js

MCP Server for Evolution API v2 - Integrate WhatsApp functionality with Claude Desktop and other MCP clients

#!/usr/bin/env node

/**
 * Evolution API MCP Server - NPX Executable
 * This is the entry point when running via npx evolution-api-mcp
 */

// CRITICAL: MCP STDIO transport requires NOTHING on stdout except MCP messages
// Redirect all console.log to stderr IMMEDIATELY before any imports
const originalConsoleLog = console.log;
console.log = (...args) => {
  console.error('[STDOUT-REDIRECT]', ...args);
};

// Also ensure any process output goes to stderr during initialization
const originalStdoutWrite = process.stdout.write;
let mcpStarted = false;
process.stdout.write = function(string, encoding, fd) {
  if (mcpStarted) {
    // MCP server is running, allow normal stdout for MCP messages
    return originalStdoutWrite.call(this, string, encoding, fd);
  } else {
    // During initialization, redirect to stderr
    return process.stderr.write(`[INIT-REDIRECT] ${string}`, encoding, fd);
  }
};

// Function to restore stdout for MCP protocol
global.enableMcpStdout = function() {
  mcpStarted = true;
  process.stdout.write = originalStdoutWrite;
};

const path = require('path');

// Determine if we're running from source or built distribution
const isBuilt = require('fs').existsSync(path.join(__dirname, '..', 'dist'));

if (isBuilt) {
  // Running from built distribution
  require('../dist/cli/cli.js').runCli().catch(error => {
    console.error('Failed to start Evolution API MCP Server:', error);
    process.exit(1);
  });
} else {
  // Running from source (development)
  try {
    require('tsx/cjs').register();
    require('../src/cli/cli.ts').runCli().catch(error => {
      console.error('Failed to start Evolution API MCP Server:', error);
      process.exit(1);
    });
  } catch (error) {
    console.error('Development mode requires tsx to be installed.');
    console.error('Please run: npm install tsx');
    console.error('Or build the project first: npm run build');
    process.exit(1);
  }
}