Enpoint with custom fields

Hi!
I have a big schema with lots of fields for /installations. But I only want some of them.
Installations:

And I wanna have a GET endpoint for /installations where I set the fields I needs there, kind of : /installations/fields=tasks&location

Is this possible? I don’t understand the API, an example would be helpfull.

Thanx in advance!

What is your expected response from the GET request?

@rich.bateman For each Installation, only tasks & location fields, and if possible I’d like to do it from the URL query. Anyway changing the response, would be still good.