API documentation for accessing leads data

Can you provide instructions on how to access the API documentation to find the correct endpoint for retrieving leads information? I am having trouble locating it.

This is the endpoint we are using to reach our Products.

‘https://your.suiteinstance.com/legacy/Api/index.php/V8/module/AOS_Products’

I checked the module names while exploring with Filezilla.
This might help since the index.php and the AOS prefix was our issue getting to some of our modules.