API Query Builder - Endpoint

I was so pleased to see the extension of the API Query Builder (QB), but am not sure it will work for me. My situation is that I’ve created a complex custom query that can be called as an endpoint, and returns a json structure that meets the query loop requirements.
My workflow is that a front-end form selects a custom post ID, along with a couple of other criteria as input to the custom query (e.g. https://my-domaincom/my-endpoint/?cpt-id=123&up-or-down=up&generation=3)

As the API QB is created in the WP/BF menu/settings, how would I pass my form data to your QB?

Dynamic Routes will be the way to go: API Query Builder – Bricksforge Docs