There are several tools that can be used to see a REST API in action and test its functionality.
Some of the most commonly used tools include:
- cURL: A command-line tool that can be used to make HTTP requests to a REST API and view the responses.
- Postman: A popular tool for testing and documenting RESTful APIs. It allows users to make requests, inspect responses, and save request history for later use.
- Advanced REST Client: A browser extension that allows users to make requests, inspect responses, and see the details of the request and response.
- SoapUI: A tool that allows users to test RESTful and SOAP-based web services. It allows users to create test cases, and assert the response.
- Insomnia: A tool that allows users to create and test RESTful API requests, it also allows to import and export data and collaborate with others.
- Fiddler: A debugging proxy tool that allows users to inspect the request and response data sent between a client and a server.
These tools can help developers and QA engineers to test and debug the API, inspect the requests and responses, and explore the functionality of the API.