You should now feel confident defining and designing your REST APIs using Postman. I hope this Postman OpenAPI tutorial is helpful for you. Instead of explaining all these detail oriented steps here in written format, I prefer to share with you my video tutorial where everything from A to Z has been explained and demonstrated clearly. Associate paths (endpoints) with HTTP Methods (verbs) like GET, PUT, POST, DELETE, PATCH etc.Define Endpoints (Paths) for all the resources of your API.Define Schemas to be referred and used as request, response structures.Update basic Info of your API by adding servers, contact details etc.You majorly perform following actions at this step: From this point, you start defining all the necessary components of your API with OpenAPI 3.0 specifications. Step 4: Define API Endpoints, API Schemas, Components and Create API Specs Just click on Create Definition to proceed with subsequent steps of API Specifications creation. It will help you saving some time without a need to write everything from scratch. Use this option if you want your API to be created with some basic skeleton and components automatically. That will help you to make syntax modifications more conveniently.Īnother excellent option you will find is boilerplate template checkbox. Both formats are popular and it is recommended to choose a format to which you are more familiar. Interested to learn about MuleSoft? Refer to My MuleSoft Tutorialsįor Your API, you also need to chose a format–JSON or YAML. RAML has a great popularity among MuleSoft developers. You can even opt for RAML Specifications. I prefer to choose OpenAPI 3.1 or OpenAPI 3.0 as these are the most popular options. Since we want to create our API from scratch, we will choose Author from scratch option here.Īfter choosing this option, you will need to select definition type from a drop down list. In order to create API Definition for your new API, click on the + button in front of Definition. Step 3: Create API Definition for Your API in Postman The most important subsequent step is the API Definition which we will majorly focus from here onwards. For this purpose, you can either create a new API Collection or copy an existing collection. You may also create collections to associate with this API. There are options to connect to a repository like Git for version control. You can also provide summary and description as per your requirements in free text fields. Now you need to provide a name to your API. Step 2: Define Basics of your API in Postman This option is used to manage all aspects of API design, development and testing. For creating API, choose API under Advanced options. If you click on New, you will see plenty of options in a new window. There is an Import option as well but in our tutorial, we are creating API Specs from scratch, so we won’t use import. In any case, you can create a new API by choosing Create an API option or New button from the top. You will see the list of any APIs already created or else you will see No APIs yet. To create API Specifications in Postman, click on APIs tab in your workspace. Step 1: Create API Using Postman in Your Workspace Now this tutorial explains and discusses how to use Postman for creating OpenAPI Specifications. I also discussed & demonstrated about using a graphical tool Stoplight Studio for OpenAPI Specifications. I already explained in another video tutorial how to create API Specifications using Swagger Editor. REST API Specifications can be created and documented using various tools. Step By Step Postman OpenAPI Tutorial for Creating OpenAPI Specifications for a REST API In this Postman OpenAPI Tutorial, I will explain how to create API Specifications using Postman. It can be used to Design APIs by creating API Specifications with popular definition types like OpenAPI, RAML etc. Postman provides rich set of features for API documentation as well. It is more commonly used for REST APIs testing but the capabilities and features of this tool are not just limited to such testing. Postman is a popular tool used by software testing teams.
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