"${stuff[@]}" would be turning it back into "foo bar baz" though, right? I think if you were using arrays for this, it'd be something like:

    stuff=("foo" "bar" "baz");
    array_length=${#stuff[@]};
    for i in $(seq 0 $array_length); do
      curl localhost:8080/${stuff[i]}
    done

I'm betting even that isn't right: as soon as bash arrays are a thing, I reach for a different language.

[edit]: trying to get formatting correct