Thanks. An example use case would be, say given a movie name you want a movie's ratings in IMDB, TMDB, RT and other online reviewing site. I would create a container and add the tmdb search endpoint with the movie name which will give the list of results sorted by relevance, from that response I'll pick the movie name and TMDB rating to the final response and pipe the IMDB_ID from the response to a parameter of IMDB which will then give it's results from which I'll send the rating to the final response and so on..
The final response would be the Movie name, TMDB Rating, IMDB Rating, etc.. You can customize the key names in the final response too.
The APIs would be called sequential so a response from one API can be passed in as a parameter to the next.
As for the other parameters to be passed to these URLs, you can either send it as a parameter while calling the root URL or can be stored static in the app while configuring the container.