TripleWhale MCP Server

Official
MIT License
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import path from 'node:path';
import os from 'node:os';
import fs from 'node:fs';
import chalk from 'chalk';
import { fileURLToPath } from 'url';

const __dirname = path.dirname(fileURLToPath(import.meta.url));
const packageJson = JSON.parse(
  fs.readFileSync(path.join(__dirname, '..', 'package.json'), 'utf8'),
);
const claudeConfigPath = path.join(
  os.homedir(),
  'Library',
  'Application Support',
  'Claude',
  'claude_desktop_config.json',
);

const MCP_TRIPLEWHALE_SERVER = 'triplewhale';

export const parseArgs = () => {
  const args = process.argv;
  if (args.length === 0) {
    console.error(
      'Please provide a TRIPLEWHALE_API_KEY as a command-line argument - you can get one through the Triplewhale console: https://triplewhale.tech/docs/manage/api-keys',
    );
    process.exit(1);
  }

  if (args.length !== 4) {
    console.error('Invalid number of arguments');
    process.exit(1);
  }

  return {
    executablePath: args[1],
    command: args[2],
    triplewhaleApiKey: args[3],
  };
};

export async function handleInit({
  executablePath,
  triplewhaleApiKey,
}: {
  executablePath: string;
  triplewhaleApiKey: string;
}) {
  // If the executable path is a local path to the dist/index.js file, use it directly
  // Otherwise, use the name of the package to always load the latest version from remote
  const serverPath = executablePath.includes('dist/index.js')
    ? executablePath
    : packageJson.name;

  const triplewhaleConfig = {
    command: 'npx',
    args: ['-y', serverPath, 'start', triplewhaleApiKey],
  };

  const configDir = path.dirname(claudeConfigPath);
  if (!fs.existsSync(configDir)) {
    console.log(chalk.blue('Creating Claude config directory...'));
    fs.mkdirSync(configDir, { recursive: true });
  }

  const existingConfig = fs.existsSync(claudeConfigPath)
    ? JSON.parse(fs.readFileSync(claudeConfigPath, 'utf8'))
    : { mcpServers: {} };

  if (MCP_TRIPLEWHALE_SERVER in (existingConfig?.mcpServers || {})) {
    console.log(chalk.yellow('Replacing existing Triplewhale MCP config...'));
  }

  const newConfig = {
    ...existingConfig,
    mcpServers: {
      ...existingConfig.mcpServers,
      [MCP_TRIPLEWHALE_SERVER]: triplewhaleConfig,
    },
  };

  fs.writeFileSync(claudeConfigPath, JSON.stringify(newConfig, null, 2));
  console.log(chalk.green(`Config written to: ${claudeConfigPath}`));
  console.log(
    chalk.blue(
      'The Triplewhale MCP server will start automatically the next time you open Claude.',
    ),
  );
}