Day to day we make use of a huge range of libraries when writing code, from the Android software development kit (SDK) to Test libraries, helper classes and everything in between. We also will often need to consume Application Programming Interfaces (APIs) either when talking with third-party systems or just interfacing with our backend application.

Often these APIs don’t have a library, and manually consuming them can be time-consuming, documentation can often be lacking (particularly with internal APIs!) and leaves a lot of ambiguity as to what the API will return, or what parameters it expects.
With OpenAPI, developers can work together to clearly define the API contact and ensure all ambiguity is removed. These specifications can then be used to streamline the process of creating a Kotlin Multiplatform Library to consume and use these APIs.

The session will delve into the fundamentals of OpenAPI and how it serves as a comprehensive standard for API specification.
Attendees will gain insights into the benefits of utilising OpenAPI to define RESTful APIs and how this can significantly expedite the Library development lifecycle.
But let’s not just talk about it, let’s build a Kotlin Multiplatform Library, and use it in an application all within 10 minutes! We will explore the tools and techniques available, and demonstrate how they enable developers to produce robust and efficient libraries without the traditional time-consuming boilerplate coding.

Key takeaways include:

* OpenAPI Essentials: We take a look at the fundamentals of OpenAPI and its role in describing RESTful APIs. Learn how OpenAPI specifications provide a standardised way to define API contracts, enabling seamless communication between different systems.

* Automating Library Generation: Live demo highlighting the simplicity of converting OpenAPI specifications into Kotlin code, automating the generation of a multiplatform library. Discover tools and techniques that streamline the process, allowing you to focus on building features rather than writing boilerplate code.

* Real-world Use Cases: With real-world uses of both OpenAPI and generated libraries we can see just how much better the world can be with clearly defined APIs!

By the end of this talk, you will have all you need to start experimenting with OpenAPI and library generation. While we focus on Kotlin Multiplatform in this talk the knowledge and tools covered can easily be used in a whole range of programming languages!