Worked on the openclaw/openclaw repository to streamline OpenAI Codex provider configuration by introducing an implicit provider and supporting explicit base URL configuration. Focused on backend and full stack development using TypeScript, the work included enhancing provider resolution logic to ensure accurate provider selection across different usage scenarios. Integrated comprehensive testing, including snapshot tests, to validate provider behavior and maintain reliability. Addressed Codex-related continuous integration issues, which improved pipeline stability and test reliability. These changes reduced configuration complexity for Codex-powered workflows, making it easier for developers to onboard and leverage Codex features while maintaining robust API integration and testing practices.