# Build Your Own SDK from Our OpenAPI Spec Generate a custom Crypto APIs SDK from the OpenAPI spec using Swagger Codegen, Azure AutoRest, NSwag or APIMatic, in whichever language your stack needs. *Published 2025-04-04* As blockchain and cryptocurrency technologies progress at a rapid pace, so too do the approaches to API integration. In the past, Crypto APIs offered **official SDKs** for various programming languages. However, driven by **innovations in AI** and the necessity for more agile, flexible solutions, those SDKs have now been **deprecated**. Instead, Crypto APIs provides a **comprehensive OpenAPI specification** and encourages you to generate your own SDK using powerful community and commercial tools. This ensures you can keep up with fast-moving changes in our API and craft a library that perfectly matches your development stack. Below, you’ll discover **five key tools**—**OpenAPI Generator**, **Swagger Codegen**, **Azure AutoRest**, **NSwag**, and **APIMatic**—to help you generate a custom SDK for Crypto APIs. Each tool caters to different environments and offers unique advantages. By building your own SDK, you’ll maintain greater control, stay aligned with evolving AI-driven development methods, and seamlessly keep pace with updates in the blockchain world. ## **Why Build Your Own SDK?** It might initially seem more convenient to download a pre-packaged library. But in a field like blockchain, which undergoes frequent transformations, a **one-size-fits-all** SDK can quickly become outdated. By using our **machine-readable OpenAPI spec**, you can generate a fresh, up-to-date SDK whenever needed. This approach: - **Aligns** perfectly with your language and coding style. - **Eliminates** long waits for official updates or complicated merges. - **Reflects** the most recent features and endpoints introduced by Crypto APIs. - **Leverages** AI innovations in code generation, ensuring more robust and maintainable libraries. Ultimately, it’s a more flexible way to handle integrations, especially when you need to pivot rapidly or adopt cutting-edge frameworks. ## **1. OpenAPI Generator** **OpenAPI Generator** stands out as a **community-driven** project with support for over 50 programming languages and frameworks—from Python, Java, and TypeScript to Dart, Kotlin, Rust, and beyond. If you’re dealing with multiple technologies in-house, you’ll find plenty of flexibility here. Because OpenAPI Generator is updated frequently by a diverse community, you’re likely to encounter the latest bug fixes, templates, and language expansions shortly after they’re introduced. You can also customize everything from the library’s structure to the naming conventions. This configurability is ideal if you have strict internal coding guidelines or if you want your SDK to seamlessly blend into a larger project. By feeding it the Crypto APIs OpenAPI file, you’ll get a cleanly documented library that precisely mirrors our endpoints, request parameters, and model schemas. ## **2. Swagger Codegen** Developed by SmartBear—the creators of Swagger—**Swagger Codegen** remains a **reliable** choice for generating SDKs. Although it supports fewer languages than OpenAPI Generator, it covers all the major ones (such as Java, Python, C#, TypeScript, and PHP) and tends to deliver very **stable** output. Many organizations prefer Swagger Codegen for **legacy systems** or environments where the technology stack doesn’t change frequently. If you need concise code that just works, without chasing the very latest frameworks, you’ll likely find Swagger Codegen a dependable solution. It also provides a variety of configuration options for customizing package structures, method names, and class hierarchies—making it straightforward to produce an SDK that fits your company’s internal style. ## **3. Azure AutoRest** **Azure AutoRest**, created by Microsoft, is a favorite among development teams that operate within **cloud-based** or **AI-driven** workflows. It’s designed to handle large-scale projects and excels at generating robust client libraries for .NET and TypeScript, although it supports Java, Go, Python, and Ruby as well. If you’re already leveraging Microsoft Azure for hosting, machine learning, or CI/CD, you may find AutoRest’s **plug-in architecture** particularly advantageous. You can integrate AutoRest into your build pipelines to regenerate SDKs immediately whenever you update the OpenAPI file, ensuring your code remains **fully synchronized** with Crypto APIs. That level of automation is especially important in AI-centric projects, where data models and workflows can evolve rapidly. ## **4. NSwag** **NSwag** is tailored primarily for .NET and **TypeScript** ecosystems, making it an excellent choice for teams using ASP.NET Core for their server backend and Angular or React for the frontend. Its narrower language support is offset by **deep customization** capabilities for those two target platforms. A standout feature is **NSwagStudio**, a user-friendly, graphical tool that allows you to configure how your OpenAPI specification will be translated into client code. This can be especially valuable for non-developers or technical managers who want to visualize and tweak the SDK generation process. For .NET teams, NSwag can be tied directly into the build pipeline to guarantee automatic updates to the client libraries whenever the OpenAPI specification for Crypto APIs changes. ## **5. APIMatic** For a more polished, **commercial** solution, **APIMatic** might be the ideal choice. It supports around 10 mainstream languages—like Java, Python, Ruby, PHP, Swift, and C#—and goes beyond code generation to include **documentation portals, interactive demos, and thorough code validation**. This makes it a strong contender if you plan to distribute your SDK externally or want a highly refined experience. Since APIMatic offers additional features such as input validation, pre-built security flows, and user-friendly packaging, it often appeals to teams seeking **premium** developer experience. The trade-off is a subscription model, but having dedicated support and advanced tooling can be well worth it if you’re aiming for production-grade libraries with minimal friction. ## **Building Your Own SDK from Crypto APIs** Generating an SDK for Crypto APIs using any of these tools generally follows a similar process: 1. **Obtain** the OpenAPI file (JSON or YAML) from our documentation. 2. **Select** the tool that best matches your language and ecosystem needs. 3. **Adjust** any optional configurations (naming conventions, dependency management, etc.). 4. **Run** the generation process to produce a client library. 5. **Integrate** the resulting code into your project’s architecture. Whenever we introduce new endpoints or security protocols, you can quickly **regenerate** your SDK—no waiting for an official release cycle. This keeps your integrations consistently aligned with the **latest** features from Crypto APIs. ## **The Benefits of a Custom, Self-Generated SDK** - **Tailored Fit**: You define how classes, methods, and namespaces are named, ensuring the library complies with your internal standards. - **On-Demand Updates**: Freshen your SDK at any time to include new or updated endpoints in minutes. - **Multi-Language Freedom**: Switch easily between languages or frameworks if project requirements change. - **Reduced Guesswork**: Base everything on the formal, machine-readable OpenAPI spec, minimizing potential errors. - **Future-Ready**: AI-driven code generation continues to evolve, providing more efficient tooling for the blockchain industry’s rapid growth. ## **Making It Work for You** Although Crypto APIs previously provided official SDKs, we **deprecated** them in favor of a **flexible, innovation-driven** approach. This shift acknowledges that **AI developments** and **fast-changing tech landscapes** demand tools that can adapt quickly. By taking advantage of robust SDK-generation solutions—OpenAPI Generator, Swagger Codegen, Azure AutoRest, NSwag, or APIMatic—you’ll be able to craft exactly what you need, on your own schedule, and without the constraints of a static, pre-packaged library. Whether you’re building an AI-powered analytics platform, a user-friendly crypto wallet, or a large-scale exchange, an **open-ended, do-it-yourself** SDK model will keep you in control. With each new release from Crypto APIs, you can keep pace by simply regenerating your custom code. That means fewer manual updates, fewer compatibility headaches, and more freedom to focus on delivering high-performance services to your end users. Ultimately, this approach ensures you have the **agility** to thrive in a dynamic blockchain and cryptocurrency environment—one where AI plays a growing role in transforming how developers build and maintain their tech stacks. If you’re ready to harness the power of a truly customizable integration, explore the OpenAPI file for Crypto APIs and pick the generation tool that best suits your needs. --- More on the [Crypto APIs blog](https://cryptoapis.io/blog), or see the [products](https://cryptoapis.io/products) this is built on.