To test the interaction of modules using APIs, there is a tool for creating Get and Post requests.
For creating a Get request, it is sufficient to pass parameters in the URL, for example:
https://domain.tld/api.php?param1=1234567¶m2=test
With Get requests, all parameters can be passed in the URL, but this method has a limitation on the amount of data that can be transmitted. If you need to pass more parameters, use Post requests.
For testing Post requests, we recommend using the Postman application - it offers a large number of parameters, as well as the ability to use a proxy server.
The program also allows you to specify headers and configure cookies.
The application has a free edition and can be downloaded from the official developer website postman.com. Registration on the site is required to obtain the download link.