Contributed to the grafana/k6-DefinitelyTyped repository by implementing TypeScript typings and usage support for the WebOTP API, focusing on enhancing secure OTP-based authentication in web applications. The work involved defining OTP credential types and request options, as well as providing a comprehensive test case to demonstrate integration. Collaborated with Google engineers to ensure the typings met industry standards and improved the developer experience for TypeScript users. This addition reduces integration risks and streamlines the adoption of OTP-based authentication flows. The project leveraged skills in API integration, TypeScript, and web development, resulting in a more robust typing surface for authentication features.