Your project's homepage gives you an overview of your existing endpoints/pipelines and allows you to quickly access relevant information to help you decide what step to take next
The OpenAPI 3.0 specification for your project's REST Endpoints can downloaded here via the Swagger icon shown in the first screenshot
You can also click on one of your existing endpoints to reveal the overlay module shown in the 2nd screenshot below.
From the overlay, you can then decide what to do next: