![]() Postman test to check field value in response.Postman test to check status is not 404 or 500.Postman test to check status code is not 404.Postman test to check whether status is 200 or 201.Postman test to check whether status is 200 OK.What are the Environment Variables, and how to use them?.How to set query string parameters in Postman?.This article will use Postman & Javascript for API testing. API testing is the process of verifying that your Application Programming Interface (API) is working correctly. Postman helps you build APIs by providing tools to capture, validate, and test requests and responses. Have your own tool like Postman that I should know about? Send it to me on Twitter.Postman is a tool to help you develop APIs. Once you need more advanced features like automated API testing or shared team documentation, you can upgrade to their paid plans and start reaping even more value from the platform. This feature is free and you can get started by just downloading their software and calling any public API. The easiest way for people at any tech level to use Postman is to access APIs without code. For most simple use cases - like accessing data from an API - Postman will be free. I’ve used Postman for numerous side projects without needing to upgrade, and my team only recently had to start paying $10 per month to manage our shared documentation. One of the most appealing things about Postman is that it has a generous free tier. If you’re building an API for your business, you can set Postman to run tests against your development environment every time you update your code. This documentation is made interactive by giving team members the ability to sync their local version of the docs with the online version.Īdditionally, you can use Postman to automatically test your APIs. For example, you can store your team’s API documentation in Postman. There are other things you can do in Postman that make accessing APIs easier as well. If you do need to convert the JSON data, you can use JSON to CSV to convert it to an Excel-friendly document. This means you don’t have to use a tool like JSON Formatter to make API data readable. In addition to making complex API requests easier, Postman also makes responses easier to read by formatting them. This raw data is called JSON data, and that’s what many web-based APIs return. Click “Send” to make the API request to Holiday API.Īssuming you put in a valid API key and there are results for the search you made, you should see something like this:. ![]() Click “Params” and enter your key, country, and year.Enter the URL into the Postman address bar.To set up Postman, download it for your operating system here.To demonstrate, we’ll use the Holiday API, so go to and sign up for a free API key. It’s really simple to set up and use Postman as well. This means you use it to can access data meant to be accessed by computers without writing any real code. Postman is a graphical user interface for HTTP APIs. There is a lot you can do with an API, but if you aren’t a developer how can you access an API? There are several good tools for getting data from APIs without code, but one of the best I’ve seen is Postman. An “Application Programming Interface” or API describes the way that two computer programs talk to one another.
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