Note that depending on the app, you might have to query a different port i.e the port it is listening on.
# curl -L http://12aded8a-8c78-4b6c-bdbe-2d549b1c2eb5:3000 | wc -c
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 11 0 11 0 0 1412 0 --:--:-- --:--:-- --:--:-- 1571
100 11 0 11 0 0 417 0 --:--:-- --:--:-- --:--:-- 417
100 143k 100 143k 0 0 1464k 0 --:--:-- --:--:-- --:--:-- 1464k
147314
Directus listens on port 8055 and n8n on port 5678