Discover how to implement the API First paradigm and OpenAPI specifications to improve communication between frontend and backend teams in this conference talk from Conf42 JavaScript 2022. Learn about the challenges faced when adopting this approach and the solutions developed, including a custom CLI tool built in Node.js. Explore the benefits of automatically generating code for both client and server, creating mock servers, and implementing early detection of API changes. Gain insights into contract-based development and how it can help prevent critical issues at the end of sprints. Understand the importance of adhering to OpenAPI specifications and how it can streamline the development process for both frontend and backend teams.