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Swagger: Everything You Need to Know

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Swagger: Everything You Need to Know

Swagger is an open-source API design and documentation tool that helps developers design, build, document, and test RESTful APIs faster and more easily.

What is Swagger

Swagger is an open-source API design and documentation tool that helps developers design, build, document, and test RESTful APIs faster and more easily. Swagger can automatically generate interactive API documentation, client SDKs, server stub code, and more, making it easier for developers to develop, test, and deploy APIs.

By 2023, the entire microservices architecture is built on APIs. After all, all communication depends on them, so businesses cannot afford any vulnerabilities or failures in API functionality. How to efficiently develop accurate and secure APIs has led to the vitality of the API tool ecosystem, including Swagger.

How Swagger Helps Implement APIs

Swagger can help developers more easily design, document, test, and deploy RESTful APIs. Swagger's automation tools can speed up API development and testing, reduce errors, and improve code maintainability. Therefore, Swagger has become a popular API design and documentation tool, widely used in various web applications and cloud services.

The ways in which Swagger helps implement APIs include:

  • Designing and documenting APIs: Swagger provides a simple and easy-to-use way to design and document RESTful APIs. Developers can use Swagger UI to create and edit API specifications and then use Swagger Editor to generate API documentation that conforms to the OpenAPI specification. Swagger UI can generate interactive API documentation, making it easier for developers to understand the structure and usage of the API.
  • Auto-generating code: Swagger can automatically generate client SDKs and server stub code from the OpenAPI specification. These codes can reduce the workload of developers and speed up code development.
  • Testing APIs: Swagger provides an integrated testing tool that helps developers test the functionality, performance, and reliability of APIs. Swagger UI provides a test page that allows developers to test different endpoints of the API using various HTTP request methods.
  • Integration and deployment: Swagger can integrate with many popular development and deployment tools (such as Git, Jenkins, Docker, etc.) to make it easier to deploy and manage APIs. Swagger can automatically generate Swagger UI, allowing developers to access API documentation and test pages directly from the browser.

Swagger Editor

The Swagger Editor is a tool that helps us validate API design in real-time, checks whether the design complies with the OpenAPI specification, and provides real-time visual feedback.

The editor tool can run anywhere, whether locally or on the network. It provides real-time feedback on API design and indicates whether errors are handled correctly or syntax issues exist.

Swagger Editor

It has intelligent autocomplete functionality, which allows us to write code faster. It is easy to configure and allows developers to create server stubs for APIs to speed up development. By getting instant responses from the stub, developers can stay up-to-date on API design progress, including how third-party developers interact with the API.

Swagger Hub

Swagger Hub is a platform for designing and documenting APIs using OpenAPI. It facilitates better API management within teams and projects by creating folders with different APIs and permission levels. Using Swagger Hub, information can be shared with authorized business people and stakeholders within the organization. This helps promote better collaboration between developers and business people. With Swagger Hub, they can work together, merge and review changes, and eventually build and merge features.

Swagger Hub

The design models provided by SwaggerHub can be saved in a private repository called a domain, which can be referenced and reused in code. When writing backend code, our API interacts with multiple other services on the backend. Using SwaggerHub, we can simulate these APIs to facilitate faster development.

What is OpenAPI?

OpenAPI is the global standard for writing RESTful APIs. It is a specification that allows developers worldwide to standardize the way APIs are documented, designed, and built. OpenAPI allows developers to design and document APIs in a simple and easy-to-understand format, making it easier to create and maintain APIs.

Originally, OpenAPI was known as the Swagger specification. Swagger proposed best practices for building APIs, which later became the OpenAPI specification. Tools like SwaggerHub can assist developers in building APIs using a browser-based editor that adheres to standards and provides complete control over the design process. With tools like Swagger Inspector, you can also generate our own API specifications and share them with other teams within the organization.

An innovator in the Swagger field

Swagger provides various tools for API scenarios based on the Design First concept. Here is an introduction to software similar to Swagger, called Apidog.


It has the following advantages:

  • Low-code design: Apidog provides an easy-to-use low-code design platform that allows users to easily design and build RESTful APIs without programming experience.
  • Automated generation: Apidog can automatically generate API documentation, code templates, and test code, greatly improving API development efficiency and quality.
  • Support for suite testing: Apidog provides support for suite testing, which makes it easy for users to test RESTful APIs.
  • Cloud-based collaboration: Apidog provides cloud-based collaboration functions that allow users to share and collaborate on API design and development work within and across teams.
  • Integration with third-party tools: Apidog can integrate with other commonly used development tools, particularly suitable for continuous integration scenarios.