During January 2026, Huanqing Lou developed a custom OpenAI-compatible Text-to-Speech (TTS) endpoint feature for the openclaw/openclaw repository. By introducing the OPENAI_TTS_BASE_URL environment variable, Lou enabled support for self-hosted or third-party TTS services, addressing privacy, cost, and performance needs. The implementation involved relaxing model and voice validation to accommodate a wider range of endpoints, and updating the test suite to ensure coverage of the expanded TTS model list. Working primarily with TypeScript and leveraging skills in API integration and full stack development, Lou delivered a focused, maintainable solution that improved flexibility and test coverage without introducing new bugs.