Scala API Documentation with Tapir and OpenAPI

Developing robust web services requires clear, accurate, and interactive API documentation that never goes out of sync with your codebase. This text-based course guides you through the process of describing HTTP endpoints in Scala using Tapir, turning your type-safe code into comprehensive OpenAPI specifications automatically. You will start by mastering foundational API design principles and essential Scala type-safety concepts before moving on to hands-on documentation techniques. By completing this course, you will transform how you build web services, ensuring your backend endpoints are self-documenting, easy to maintain, and instantly clear to frontend teams and external integrators. What you'll learn: - Understand the core concepts of type-safe API design in Scala - Define HTTP endpoints using Tapir schemas, inputs, and outputs - Generate compliant OpenAPI specifications directly from your Scala code - Integrate and configure interactive Swagger UI for real-time endpoint testing - Handle complex data types, custom error responses, and query parameters - Apply modern Scala practices including type classes and declarative route definitions This course begins with fundamental terminology and basic endpoint modeling, guiding you step-by-step through schema generation, documentation enhancement, and live testing configurations. You will learn by reading detailed explanations, analyzing clean code snippets, and working through structured written exercises. This course is designed for beginner to intermediate Scala developers who want to learn professional API documentation practices. No prior experience with Tapir or OpenAPI is required, though a basic familiarity with Scala syntax is recommended. Start writing cleaner, self-documenting Scala APIs today.